The measure of angle zxy is 125 degrees.
To solve the problem, we can use the fact that the sum of the measures of two adjacent angles is 180 degrees. Let's call the measure of angle zxy "x".
We know that the ratio of m angle wxz to m angle zxy is 11:25, which means that:
m angle wxz : m angle zxy = 11 : 25
We can write this as an equation:
m angle wxz / m angle zxy = 11/25
We also know that the two angles are adjacent, so their measures add up to 180 degrees:
m angle wxz + m angle zxy = 180
Now we can use these two equations to solve for x:
m angle wxz / x = 11/25
m angle wxz = (11/25)x
Substituting this into the second equation:
(11/25)x + x = 180
(36/25)x = 180
x = (25/36) * 180
x = 125
Therefore, the measure of angle zxy is 125 degrees.
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Solve for w: 7w≤ -42
Answer:
w≤−6
Step-by-step explanation:
Yur welcome :)
Answer:
w is less than or equal to -6.
Step-by-step explanation:
Household Income (thousands)
38
45
76
93
50
54
29
44
62
31
The household incomes for 10 different households are shown. What is the mean absolute deviation for the group (round to the
nearest tenth)?
The mean absolute deviation for the group of household incomes is approximately 14.8 (rounded to the nearest tenth).
To calculate the mean absolute deviation (MAD) for a group of data, we follow these steps:
Find the mean (average) of the data set.
Subtract the mean from each data point, obtaining the deviations.
Take the absolute value of each deviation.
Find the mean of the absolute deviations.
Given the household incomes for 10 different households:
38, 45, 76, 93, 50, 54, 29, 44, 62, 31
Let's calculate the MAD step by step:
Find the mean (average):
Mean = (38 + 45 + 76 + 93 + 50 + 54 + 29 + 44 + 62 + 31) / 10
Mean = 482 / 10
Mean = 48.2
Calculate the deviations:
Deviation for each data point = Data point - Mean
Deviation for 38 = 38 - 48.2 = -10.2
Deviation for 45 = 45 - 48.2 = -3.2
Deviation for 76 = 76 - 48.2 = 27.8
Deviation for 93 = 93 - 48.2 = 44.8
Deviation for 50 = 50 - 48.2 = 1.8
Deviation for 54 = 54 - 48.2 = 5.8
Deviation for 29 = 29 - 48.2 = -19.2
Deviation for 44 = 44 - 48.2 = -4.2
Deviation for 62 = 62 - 48.2 = 13.8
Deviation for 31 = 31 - 48.2 = -17.2
Take the absolute value of each deviation:
Absolute deviation for each data point = |Deviation|
Absolute deviation for -10.2 = 10.2
Absolute deviation for -3.2 = 3.2
Absolute deviation for 27.8 = 27.8
Absolute deviation for 44.8 = 44.8
Absolute deviation for 1.8 = 1.8
Absolute deviation for 5.8 = 5.8
Absolute deviation for -19.2 = 19.2
Absolute deviation for -4.2 = 4.2
Absolute deviation for 13.8 = 13.8
Absolute deviation for -17.2 = 17.2
Find the mean of the absolute deviations:
Mean Absolute Deviation (MAD) = (10.2 + 3.2 + 27.8 + 44.8 + 1.8 + 5.8 + 19.2 + 4.2 + 13.8 + 17.2) / 10
MAD = 148 / 10
MAD = 14.8
To the nearest tenth, this means that the mean absolute deviation for the group of household incomes is around 14.8.
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Which of these lengths could be the sides of a triangle?
A) 5 cm, 19 cm, 14 cm
B) 14 cm, 24 cm, 8 cm
C) 19 cm, 5 cm, 15 cm
D) 24 cm, 14 cm, 9 cm
Answer:
c
Step-by-step explanation:
in order for it to be a triangle the smaller sides have to add up to be greater than the longest side
for a 5+14=19 so that is not a triangle because the side dont add up to be greater than 19
for b 14+8=22 so that is also not a triangle because the sides dont add up to be greater than 24
for c 5+15=20 so that is a triangle because to 2 shorter sides added are greater than the longest side
for d 14+9=23 so that is not a triangle because the two smaller sides dont add up to be greater than 24
Aiko works in the fish department of a pet store. She must drain, clean, and refill two reef tanks. the first tank hold 175 gallons of water and drains at a rate of 25 gallons per hour. The second tank holds 200 gallons of water and drains at a rate of 30 gallons per hour.
1. Write an equation for each tank representing the total amount of water in gallons in the tank, y, in terms of the number of hours, x, that the tank drains
2. what is the solution to this system of equations.
3. suppose Aiko starts draining the tanks at the same time. When will both tanks have the same amount of water? How much water is in each tank at that time
The answers to each part is mentioned above.
What are algebraic expressions?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.Given is that Aiko works in the fish department of a pet store. She must drain, clean, and refill two reef tanks. The first tank hold 175 gallons of water and drains at a rate of 25 gallons per hour. The second tank holds 200 gallons of water and drains at a rate of 30 gallons per hour.
( 1 ) -Equation for tank {1} -
y = 175 - 25x
Equation for tank {2} -
y = 200 - 30x
( 2 ) -For the solution we can write -
175 - 25x = 200 - 30x
- 25x + 30x = 200 - 175
5x = 25
x = 5
and
y = 200 - 150
y = 50
( 3 ) -For the same amount of water we can write -
175 - 25x = 200 - 30x
- 25x + 30x = 200 - 175
5x = 25
x = 5 hours
In tank (1), there is : 175 - 25 x 5 = 50 gallons
In tank (2), there is : 200 - 30 x 5 = 50 gallons
Therefore, the answers to each part is mentioned above.
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Solve the equation: 8 = 1/3(a+5)
Answer:
a=19
Step-by-step explanation:
8=1/3(a+5) by dividing both sides by 1/3
24 = a+5 get 5 to other side with oposite sign
24-5 = a
a = 19
Answer:
a = 19
Step-by-step explanation:
8 = \(\frac{1}{3}\) ( a + 5) ← multiply both sides by 3 to clear the fraction
24 = a + 5 ( subtract 5 from both sides )
19 = a
Look at triangle ABC.
Coordinate grid shows negative 5 to positive 5 on the x axis and y axis at intervals of 1. A triangle ABC is shown with A at ordered pair 4, 5, B at ordered pair 2, 1, and C at ordered pair 4, 1.
What is the length of side AB of the triangle?
2
Square root of 20
6
Square root of 38
Answer:
square root of 20
Step-by-step explanation:
Answer:
sq root of 20
Step-by-step explanation:
An annuity has a payment of $300 at time t = 1, $350 at t = 2, and so on, with payments increasing $50 every year, until the last payment of $1,000. With an interest rate of 8%, calculate the present value of this annuity.
The present value of the annuity is $4,813.52.
To calculate the present value of the annuity, we can use the formula for the present value of an increasing annuity:
PV = C * (1 - (1 + r)^(-n)) / (r - g)
Where:
PV = Present Value
C = Payment amount at time t=1
r = Interest rate
n = Number of payments
g = Growth rate of payments
In this case:
C = $300
r = 8% or 0.08
n = Number of payments = Last payment amount - First payment amount / Growth rate + 1 = ($1000 - $300) / $50 + 1 = 14
g = Growth rate of payments = $50
Plugging in these values into the formula, we get:
PV = $300 * (1 - (1 + 0.08)^(-14)) / (0.08 - 0.05) = $4,813.52
Therefore, the present value of this annuity is $4,813.52. This means that if we were to invest $4,813.52 today at an interest rate of 8%, it would grow to match the future cash flows of the annuity.
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Find m∠ABD and m∠CBD given m∠ABC = 111∘.
Answer:
m∠ABD = 88º
m∠CBD = 23º
Step-by-step explanation:
(-10x + 58) + (6x + 41) = 111
Combine like terms
-4x + 99 = 111
Subtract 99 from both sides
-4x = 12
Divide both sides by -4
x = -3
------------------------
m∠ABD = -10x + 58
m∠ABD = -10(-3) + 58
m∠ABD = = 30 + 58
m∠ABD = 88º
m∠CBD = 6x + 41
m∠CBD = 6(-3) + 41
m∠CBD = -18 + 41
m∠CBD = 23º
Answer:
88, 23
Step-by-step explanation:
<ABD + <DBC = <ABC
(-10x + 58) + (6x + 41) = 111
-10x + 58 + 6x + 41 = 111
99 - 4x = 111
-4x = 111-99
-4x = 12
x = 12/-4
x = -3
m∠ABD = -10x + 58
m∠ABD = -10(-3) + 58
m∠ABD = = 30 + 58
m∠ABD = 88º
<DBC = 6x + 41 = 6*-3 + 41 = -18 + 41 = 23
Hope it helps u
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A cup can hold 125ml of water when full how much cups would it take to fill a jug that can hold 3/4 L
Answer:
6 cups
Step-by-step explanation:
Given that:
Volume of water held in cup when full = 125ml
Number of cups it will take to fill a jug which holds 3/4 L
Converting mL to L:
1000 mL = 1 L
Volume of water in cup when full = 125 / 1000 = 0.125 L
Jug which holds 3/4 L = 0.75 capacity
Hence, number of cups it'll take :
0.75 / 0.125
= 6
It will take 6 cups of 125mL to fill 3/4 L
10 pack of 2.3 ounce bars at $17.35
10pack------------>$17.35
1 pack-------------->x
using cross multiplication
10/1 = 17.35/x
Solving for x:
x = 17.35/10 = $1.735
Therefore each pack costs $1.735
A researcher tested the hypothesis that weight gain during pregnancy was associated with infant's birth weight. Which statistical test would be appropriate? Group of answer choices A. Chi-square test B. Pearson's C. A paired t-test
To test the hypothesis that weight gain during pregnancy is associated with infant's birth weight, Pearson's correlation coefficient (option B) would be an appropriate statistical test.
In this scenario, the goal is to examine the association between two continuous variables: weight gain during pregnancy (independent variable) and infant's birth weight (dependent variable). Pearson's correlation coefficient is used to measure the strength and direction of the linear relationship between two continuous variables.
Option A, the Chi-square test, is not appropriate as it is used to analyze categorical variables, such as comparing frequencies or proportions between different groups.
Option C, a paired t-test, is used when comparing means of a continuous variable within the same group before and after an intervention or treatment, which does not align with the current scenario.
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Find the value of c so that the polynomial p(x) is divisible by (x-3).
p(x) = -x^3 + cx^2 -4x + 3
Answer:
c = 4.
Step-by-step explanation:
If p(x) is divisible by (x-3) then p(3) = 0 (By the Factor Theorem), so
-(3)^3 + (3)^2c - 4(3) + 3 = 0
-27 + 9c - 12 + 3 = 0
9c = 27 + 12 - 3
9c = 36
c = 4.
Answer:
4
Step-by-step explanation:
the p-value for a one-sided t-test is 0.10. if the test had been two-sided, what would the p-value have been?
Therefore , the solution of the given problem of Test statistic comes out to be 0.20 would be the p-value again for two-sided t-test.
Test statistic: What is it?The test statistic for something akin to a Z-test has been the Z-statistic, which shows the usual normal null hypothesis to be correct. Suppose you perform a 2 X y test with a 0.05 threshold of significance and, based on your data, you obtain a 2.5 R t (also defined as a Z-value). 0.0124 is the p-value for the this Z-value.
Here,
The chance of getting a test statistic that is as extreme as, or much more extreme than, the student's test statistic, given the null hypothesis is correct, is 0.10 if the p-value for an each t-test is 0.10.
Assuming the null hypothesis is true, the p-value for a 2 t-test would be twice the chance of getting a test statistic that is as extreme as, or more extreme than, the shows the reliability statistic in either tail of the distribution.
Consequently, the following would be the two-sided t-p test's value:
P-value (two-sided) equals 2 * P-value (one-sided) equals 2 * 0.10 and equals 0.20.
Therefore, 0.20 would be the p-value again for two-sided t-test.
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find+the+standard+deviation+for+a+security+that+has+three+oneyear+returns+of+5%,+10%,+and+15%.+question+content+area+bottom+part+1+a.+25.00%+b.+8.33%+c.+16.67%+d.+5.00%
Answer:
Step-by-step explanation:
its 100%
if m, p, and t are distinct positive prime numbers, then m3pt has how many different positive divisors greater than 1 ?
There are 15 different positive divisors (greater than 1) for the number m³pt. Here m, p, and t are distinct prime numbers. This is obtained by the prime factorization method.
How to find the number of positive factors for a number?The following are the steps to find the number of positive factors of a number:
Step 1: Find the L.C.M of the number by using the prime factorization method. For example: consider the number 24. Then, its prime factorization is as follows:
24 = 2 × 2 × 2 × 3
Step 2: Same bases should be added in powers. So, the factors we can write as
24 = 2³ × 3¹
Step 3: To find the number of positive factors of the number, the exponents of the prime factors is multiplied by adding 1.
I,e., N = (3 + 1)(1 + 1) = 4 × 2 = 8.
So, there are 8 factors for the number 32. They are 1, 2, 3, 4, 6, 8, 12, and 24.
Calculation:It is given that, m, p, and t are distinct positive prime numbers.
Then, the number of positive divisors greater than 1 for the number m³pt are
m³× p × t
Since m, p, and t are prime factors, we can multiply their power by adding 1 to them. I.e.,
N = (3 + 1) (1 + 1) (1 + 1) = 4 × 2 × 2 = 16
So, there are a total of 16 factors for the given number (including 1). So, the number of factors greater than 1 is 16 - 1 = 15.
Therefore, there are 15 different positive divisors greater than 1 for the number having prime factors as m³pt.
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A car is sold for £7,800 If this represents a depreciation in value to 60% of its original
price, then calculate the original price of the car.
Answer:
6,543
Step-by-step explanation:
This is my guess ONLY.
i need to find the area .
Answer:
104 ft^2
Step-by-step explanation:
area of rectangle = 8 × 10 = 80
area of triangle = 1/2 × 6 × 8 = 24
∴total area = 104 ft^2
Which is a more precise measuring tool, the balance or the graduated cylinder? Discuss it in terms of the number of significant figures. Please explain your answer.
In terms of measuring precision, the graduated cylinder is typically a more precise measuring tool compared to a balance. This can be understood by considering the concept of significant figures.
Significant figures are the digits in a number that carry meaning regarding its precision. When using a balance, the precision is determined by the readability of the scale and the accuracy of the measurements.
For example, if the balance reads to the nearest gram, the measurements will have one decimal place of precision. Therefore, the number of significant figures obtained from a balance measurement is limited by the readability of the scale.
On the other hand, a graduated cylinder is a measuring tool used for volume measurements. The graduations on the cylinder provide a greater level of precision compared to a balance.
For instance, a graduated cylinder with milliliter graduations may allow for measurements with two or three decimal places, providing a higher degree of precision in the recorded value.
To illustrate this, let's consider an example. If we are measuring the mass of an object on a balance that reads to the nearest gram, the result might be 10.0 grams.
This measurement has three significant figures. However, if we are measuring the volume of a liquid in a graduated cylinder with milliliter graduations, the measurement might be 10.00 milliliters. This measurement has four significant figures, indicating a higher precision.
Therefore, in terms of the number of significant figures, the graduated cylinder generally provides a more precise measurement compared to a balance.
However, it's important to note that precision alone does not guarantee accuracy, as the accuracy of any measurement tool depends on factors such as calibration and user technique.
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Which of the following verifies that AABC is similar to A DEF?
A
E
18
9
49°
CD
A
499
9
18
F
O A. AA postulate
B. Similarity cannot be determined.
O C. SAS theorem
O D. SSS theorem
By SAS theorem the triangle ABC is similar to triangle DEF.
What is Triangle?A triangle is a three-sided polygon that consists of three edges and three vertices.
Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion .
The triangles ABC and DEF are similar triangles.
To find the theorem which can be used to verify triangle ABC is similar to DEF.
Now,, By figure,
There are one angle are common.
And, Ratio of two sides are equal.
The SAS states that if two corresponding sides in two triangles are of the same length, and the angles between these sides in those two triangles are also equal in measure so two triangles are congruent.
Hence, by SAS theorem the triangle ABC is similar to triangle DEF.
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help me on math pleaseee
Answer:
its too blurry
Step-by-step explanation:
Answer:
slope intercept form is -2/3 for the first one
If 2 is subtracted from four times a number, the
result is 3 more than six times the number.
3
What is the number?
Answer:
n = -5/2
Step-by-step explanation:
4n - 2 = 6n + 3
-2 = 2n + 3
-5 = 2n
n = -5/2
i don’t understand soh cah toa. help
Answer:
soh cah toa
Step-by-step explanation:
The soh mean when you want to find the sine of an angle you divide the opisite side by the hypotonus or o/h. The cah means when you want to find the cosine of an angle, you divide the adjasent line by the hypotonus or a/h. The toa means whe you want to find the tanjent of an angle, you divide the opisite line ny the adjecent line or o/a. Hope that helps with soh cah toa!
an insurance company checks police records on 582 accidents selected at random and notes that teenagers were at the wheel in 91 of them. (a) (8 pts) find the 95% confidence interval for , the true proportion of all auto accidents that involve teenage drivers. (note: for full credit, show all your work. no credit
The 95% confidence interval for the true proportion of all auto accidents involving teenage drivers is approximately (0.1205, 0.1927).
To find the 95% confidence interval for the true proportion of all auto accidents involving teenage drivers, we can use the formula for the confidence interval for a proportion.
The formula for the confidence interval is:
CI = p1 ± Z * √((p1 * (1 - p1)) / n)
Where:
CI is the confidence interval,
p1 is the sample proportion (proportion of accidents involving teenage drivers),
Z is the Z-score corresponding to the desired confidence level (95% confidence level corresponds to Z ≈ 1.96),
n is the sample size (number of accidents checked).
Given:
Number of accidents checked (sample size), n = 582
Number of accidents involving teenage drivers, x = 91
First, we calculate the sample proportion:
p1 = x / n = 91 / 582 ≈ 0.1566
Now we can calculate the confidence interval:
CI = 0.1566 ± 1.96 * √((0.1566 * (1 - 0.1566)) / 582)
Calculating the standard error of the proportion:
SE = √((p1 * (1 - p1)) / n) = √((0.1566 * (1 - 0.1566)) / 582) ≈ 0.0184
Substituting the values into the formula:
CI = 0.1566 ± 1.96 * 0.0184
Calculating the values:
CI = 0.1566 ± 0.0361
Finally, we can simplify the confidence interval:
CI = (0.1205, 0.1927)
Therefore, the 95% confidence interval for the true proportion of all auto accidents involving teenage drivers is approximately (0.1205, 0.1927).
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Find an explicit rule for the nth term of the arithmetic sequence. -20, -14, -8, -2, ... A. an = -20 + 6(n+2) B. an = -20 + 6(n-1) C. an = -20 Ã 6(n-1) D. an = -20 + 6(n+1)
the explicit rule of the nth term of the arithmetic
sequence is A. aₙ = 6n-8
B. aₙ = 6n-26
C. aₙ= 6n-26
D. aₙ =6n-14
What is arithmetic sequence?the sequence of numbers having constant differences between two successive numbers.
why explicit formula for arithmetic sequence is used?the explicit formula is used for determining any term of an arithmetic sequences directly in where only the first term and differences between two consecutive terms are needed to know.
Given, -20,-14,-8,-2,...are the terms. an explicit rule for the nth term of the arithmetic sequence is given by the formula, aₙ=a₁+(n-1) d
where, a₁ is the first term, aₙ is the nth term, d is the difference between two terms, n is the number of terms.
as per question a₁= -20, d= 6
now A. aₙ = -20+6(n+2)
aₙ = 6n-8
B. aₙ= -20+6(n-1)
aₙ = 6n-26
C. aₙ =-20+6(n-1)
aₙ = 6n-26
D. aₙ= -20+6(n+1)
aₙ = 6n-14
the above are the explicit rules for the arithmetic sequence.
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How do you create a unique array?
Minimum Increment operations to make Array unique
Minimum Increment operations to make Array unique.Making elements distinct in a sorted array by minimum increments.Find sum of non-repeating (distinct) elements in an array.Find k closest numbers in an unsorted array.Find k closest elements to a given value.What does the unique function do in Excel?The UNIQUE function will return an array, which will spill if it's the final result of a formula. This means that Excel will dynamically create the appropriate sized array range when you press ENTER .
How does ArrayList work?ArrayList is like an array behind the scenes as it’s backed by an array of type java.lang.Object in java.
Normally arrays are fixed in size which means the number of elements that can be added are fixed and cannot be increased once created. ArrayList can dynamically increase in size once the array that backs is full so, these way we won’t encounter runtime exceptions.
When we say list.get(0), it’s equivalent to array[0]. It can be said the ArrayList is a kind of more convenient way to use dynamic arrays.
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the current in a certain river is known to be 2 kph. at full throttle, a boat makes a 4 km trip in this river (2 km upstream and 2 km downstream)in a total of 11 minutes. at full throttle, what is the speed of the boat in still water?
The speed of the boat in still water is 5 km/h.
Let's denote the speed of the boat in still water as "v" (in km/h). Since the boat travels 2 km upstream and 2 km downstream, we know that the total distance traveled is 4 km.
Let's first calculate the time taken to travel 2 km upstream. We know that the current is flowing at 2 km/h, so the effective speed of the boat relative to the river is (v - 2) km/h (since it is going against the current). Therefore, the time taken to travel 2 km upstream is
time taken = distance / speed = 2 / (v - 2) hours
Similarly, the time taken to travel 2 km downstream is
time taken = distance / speed = 2 / (v + 2) hours
The total time taken for the round trip (2 km upstream and 2 km downstream) is given as 11 minutes, which is equivalent to (11/60) hours. Therefore, we can write
2 / (v - 2) + 2 / (v + 2) = 11/60
Multiplying both sides by (v - 2)(v + 2) gives
2(v + 2) + 2(v - 2) = (v - 2)(v + 2)(11/60)
Simplifying the right-hand side gives
(v - 2)(v + 2)(11/60) = (11/3)v^2 - 44/3
Substituting this expression into the previous equation and simplifying gives
22v = (11/3)v^2 - 44/3
Multiplying both sides by 3 gives
66v = 11v^2 - 44
Rearranging and solving for v using the quadratic formula gives
v = (11 ± √(11^2 + 4×44))/22
Taking the positive solution (since v must be positive) gives
v = 5 km/h
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Find the value of x.
A. 5.58
B. 9.14
C. 15.2
D. 10
PLEASE HELP!!! :(
Answer:
D. 10
Step-by-step explanation:
\({ \sf{(12x + 12) \degree = 79\degree + (5x + 3)\degree}} \\ { \sf{ \{outer \: angle \: is \: equal \: to \: sum \: of \: inner \: angles \}}} \\ { \sf{12x - 5x = 79 + 3 - 12}} \\ { \sf{7x = 70}} \\ { \sf{x = 10}}\)
Find the sum: -7.5 + (-7.6)
Help me pls someone!!
Answer:
-15.1
Step-by-step explanation:
Two negative numbers add the same way as positive numbers, so it is -(7.5 + 7.6) or -15.1.
HELP ME PLSSSSSSSSSSSSSSSSSSS
Answer:
There is no image for me to help u
Step-by-step explanation:
Answer:
What's the question? And what subject?
Diego estimated that he has 200 rocks in his collection. He counted them and he has 160 rocks. What is his percent error?
Answer:
80%
Step-by-step explanation:
160 of 200
160/200=0.8
move the decimal point over to the right 2 times
then u have 0.80
80%