Answer:
11.
x = 108°
y = 36
z = 24
12.
x = 5
Step-by-step explanation:
11.
72 + x = 180
-72 -72
x = 108°
72 = 2y
÷2 ÷2
36 = y
3z + 108 = 180
-108 -108
3z = 72
÷3 ÷3
z = 24
12.
4x + 25 + 5x + 20 = 90
9x + 45 = 90
-45 -45
9x = 45
÷9 ÷9
x = 5
I hope this helps!
I need the answers for the table below.
The values of f(x) for the given x - values rounded to 4 decimal places are 0.0078, 0.0078, 0.0020, 0.0020, 0.0019 and 0.0013 respectively
Given the function :
tan(πx)/7xSubstitute the given value of x to obtain the corresponding f(x) values :
x = -0.6
f(x) = (tanπ(-0.6))/7(-0.6) = 0.0078358
x = -0.51
f(x) = (tanπ(-0.51))/7(-0.51) = 0.0078350
x = -0.501
f(x) = (tanπ(-0.501))/7(-0.501) = 0.001967
x = -0.5
f(x) = (tanπ(-0.5))/7(-0.5) = 0.001959
x = -0.4999
f(x) = (tanπ(-0.4999))/7(-0.4999) = 0.001958
x = 0.499
f(x) = (tanπ(-0.499))/7(-0.499) = 0.001951
x = -0.49
f(x) = (tanπ(-0.49))/7(-0.49) = 0.00188
x = -0.4
f(x) = (tanπ(-0.4))/7(-0.4) = 0.00125
Therefore, values which complete the table are 0.0078, 0.0078, 0.0020, 0.0020, 0.0019 and 0.0013
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A certain type of kickboard scooter comes in silver, red, 2
or purple with wheel sizes of 125 millimeters or 180
millimeters. Determine the total number of color-wheel size combinations.
(This is probability and I’m having such a hell of a time figuring it out pls help)
There are a total of 8 color-wheel size combinations for the kickboard scooter. This means that customers have 8 different options to choose from when selecting the color and wheel size for their scooter.
To determine the total number of color-wheel size combinations for the kickboard scooter, we need to multiply the number of color options by the number of wheel size options.
Given that there are 4 color options (silver, red, blue, and purple) and 2 wheel size options (125mm and 180mm), we can use the multiplication principle to find the total number of combinations:
Total combinations = Number of color options × Number of wheel size options
Total combinations = 4 colors × 2 wheel sizes
Total combinations = 8
There are a total of 8 color-wheel size combinations for the kickboard scooter. This means that customers have 8 different options to choose from when selecting the color and wheel size for their scooter.
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DONT IGNORE PLEASE!! What is the measure of angle c
A. 94°
B. 86°
C. 18°
D. 274°
Answer:
B
Step-by-step explanation:
the sum of the 3 angles in a triangle is 180° , so
∠ c + 56° + 38° = 180°
∠ c + 94° = 180° ( subtract 94° from both sides )
∠ c = 86°
A bag contains 7 red balls, 4 blue balls and 3 yellow balls. 3 balls are drawn at random and not replaced. What is the probability that all three balls are red ?
Answer:
Total number of balls equals 14
Probability of 1 red ball = 7 / 14
Probability of second red ball = 6 / 13
Probability of third red ball = 5 / 12
Total probability = 7 / 14 * 6 / 13 * 5 / 12
Total = 1/2 * 6/13 * 5/12
Common denominator = 312
Total = (1 * 6 * 5) / 312) = 30 / 312 = .096
One can enter fractions into a calculator and get the same result.
Answer:
7/14 = 1/2
Step-by-step explanation:
A psychologist is interested in whether hypnosis affects brain dominance. Twelve college students from the freshmen class are randomly sampled for an experiment. The experiment has two conditions which are given on different days. In condition 1, the students are hypnotized and then given a test which measures the relative dominance of the right and left hemispheres. The higher the score, the more dominant is the right hemisphere. In condition 2, the same students are given the test again, only this time they are not hypnotized but are in their normal state of consciousness. The following scores are obtained:
Student 1 2 3 4 5 6 7 8 9 10 11
Condition 1 26 15 22 19 23 37 16 17 14 16 21
Condition 2 12 13 18 17 21 22 11 22 10 14 15
Answer the following questions and show your work for each mathematical question:
a. What is the (non-directional) alternative hypothesis?
b. What is the null hypothesis?
c. What is the p value?
Answer:
\((a)\ H_a : d_1 - d_2 \ne 0\)
\((b)\ H_0 : d_1 - d_2 = 0\)
\((c)\ p\ value = 0.0216\)
Step-by-step explanation:
Given
The above data
The question says 12 college students were sampled. However, data for 11 students were provided.
So, I will solve this question using 11 students i.e. n = 11
Solving (a): The alternative hypothesis
Let the relative dominance of the hypnotized students (condition 1) be \(d_1\) and the relative dominance of the non-hypnotized students (condition 2) be \(d_2\), respectively
The alternative hypothesis is the difference between these relative dominance not equal to 0.
So:
\(H_a : d_1 - d_2 \ne 0\)
Solving (b): The null hypothesis
The null hypothesis is the difference between these relative dominance equal to 0.
Using the same notation as (a), the null hypothesis is:
\(H_0 = d_1 - d_2 = 0\)
Solving (c): The p value
Using paired samples t test:
First, calculate the difference in scores
\(i.e.\ Condition\ 1 - Condition\ 2\)
The difference (d) is as follows:
\(d: 14, 2, 4,2, 2, 15, 5, -5, 4, 2, 6\)
Next, calculate the mean of the differences:
This is calculated as:
\(\mu = \frac{\sum x}{n}\)
\(\mu = \frac{14+ 2+ 4+2+ 2+ 15+ 5 -5+ 4+ 2+ 6}{11}\)
\(\mu = \frac{51}{11}\)
\(\mu = 4.6364\)
Next, calculate the standard difference of the differences.
This is calculated as:
\(\sigma = \sqrt{\frac{\sum(x - \mu)^2}{n-1}}\)
So:
\(\sigma = \sqrt{\frac{(14 - 4.6364)^2+ (2- 4.6364)^2+ (4- 4.6364)^2+ ............ (6- 4.6364)^2}{11-1}}\)
\(\sigma = \sqrt{\frac{318.54545456}{10}}\)
\(\sigma = \sqrt{31.854545456}\)
\(\sigma = 5.64398\)
Next, calculate the standard error of the mean difference.
This is calculated as:
\(SE = \frac{\sigma}{\sqrt{n}}\)
\(SE = \frac{5.64398}{\sqrt{11}}\)
\(SE = \frac{5.64398}{3.3166}\)
\(SE = 1.70173\)
Next, calculate the degree of freedom (df)
\(df = n -1\)
\(df = 11 -1\)
\(df = 10\)
Lastly, calculate the test statistics (t)
This is calculated as:
\(t = \frac{\mu}{SE}\)
\(t = \frac{4.6364}{1.70173}\)
\(t = 2.72452\)
\(t \approx 2.72\)
From the t distribution table:
Where \(df = 10\) and \(t = 2.72\)
We have:
\(P(t > 2.72) = 0.0108\)
For a two-tailed test, the p value is
\(p\ value = 2 * P(t > 2.72)\)
\(p\ value = 2 * 0.0108\)
\(p\ value = 0.0216\)
Solve x3 + x2 - x - 1 =. 0 by factoring by grouping
Answer:
(x^2-1)(x+1)=0
(x+1)(x-1)(x+1)=0
x=1; x=-1
Step-by-step explanation:
Answer:
(x^2-1)(x+1)=0
(x+1)(x-1)(x+1)=0
x=1; x=-1
Step-by-step explanation:
Beverly is buying hot dogs and hot dog buns for a picnic. She wants to buy 1 hot dog for each bun with none leftover. The hot dogs come packed 12 in a package. The buns come packed 8 in a package. what is the least amount of each Beverly needs to buy? How many packages of each item would Beverly have to buy?
The least amount of each hot dogs and hot dog buns Beverly needs to buy is 24
The least amount of each hot dogs and hot dog buns Beverly needs to buyHot dog = 12 in a packageHot dog buns = 8 in a packageFind the least common multiple (LCM) of 12 and 8
12 = 12, 24, 36, 48, 60, 72, 84, 96, 1208 = 8, 16, 24, 32, 40, 48, 56, 64, 72, 80The least common multiple (LCM) of 12 and 8 is 24
Number packages of each item would Beverly have to buy?
Hot dog = 12 in a package
= 24 /12
= 2 packages
Hot dog buns = 8 in a package
= 24/8
= 3 packages
Therefore, the number of packages of each hot dogs and hot dog buns would Beverly have to buy us 2 packages and 3 packages respectively.
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The dimensions of a rectangular garden are: Length (2x + 3) and the width is (3x-5) Find the value of x if the perimeter is equal to 26.
length=(2x-3)
width=(3x-5)
perimeter=26
perimeter= (2 times length) + (2 times width)
26= 2(2x-2) + 2(3x-5)
26 = 4x - 6 + 6x - 10
26 = 10x -16
26 + 16 = 10x -16 + 16
10 = 10x
10 ÷ 10 = 10x ÷ 10
1 = x
9+5y=20
What is The solution to y?
Answer:
y=2.2
Step-by-step explanation:
5(2.2)=11
9+11=20
A full container has 2 1/2 gallons of juice. A serving is 1/16 gallon of juice. How many servings of juice are in the container?
Answer:
40 servings
Step-by-step explanation:
2 1/2 / 1/16 = 5/2 x 16/1 = 80/2 = 40
x - 62.54 = 85.6
Answer for x
Answer:23.06
Step-by-step explanation:
subtract 85.6 from 62.54 and that should shoot out your answer
Answer:
x = 148.14
Step by Step explanation:
You add 62.54 plus 85.60 equals 148.14.
A textbook store sold a combined total of 392 physics and psychology textbooks in a week. The number of physics textbooks sold was three times the number of psychology textbooks sold. How many textbooks of each type were sold?
Answer:
Psychology textbooks = 98 and physics textbooks = 294
Step-by-step explanation:
Let there are x psychology textbooks sold.
No of physics textbooks sold = 3x
ATQ,
A textbook store sold a combined total of 392 physics and psychology textbooks in a week.
x + 3x = 392
4x = 392
x = 98
It means there are 98 psychology textbooks sold and 3x = 3(98) = 294 physics textbooks sold.
is a measure of behaviors by producers and consumers in response to changes in price.
Answer: The statement you've provided describes the economic concept of elasticity. Elasticity is a measure of how responsive the quantity demanded or supplied of a good or service is to a change in its price. It measures the responsiveness of the consumers' and producers' behaviors to changes in price, in other words, how sensitive the consumers or producers are to changes in the good or service prices.
There are different types of elasticity, such as price elasticity of demand and price elasticity of supply. Price elasticity of demand measures how much the quantity demanded of a good changes in response to a change in its price. If a good has a high price elasticity of demand, then a small change in its price will result in a large change in the quantity demanded of the good. On the other hand, price elasticity of supply measures how much the quantity supplied of a good changes in response to a change in its price. A good with a high price elasticity of supply will see a large increase in the quantity supplied in response to a small price increase.
Elasticity is a very important concept in economics because it helps to understand how consumers and producers will react to changes in prices and how it would affect the overall economy.
Step-by-step explanation:
14 points!! PLEASE HELP MARKING BRAINLIST
Answer:
x = 58.03°
Step-by-step explanation:
Given:
17 cm is the length of the hypotenuse9 cm is the length of the adjacent sideSolve for x:
cos x = adjacent / hypotenusex = \(cos^{-1}(\frac{adjacent}{hypotenuse})\)1. \(x=cos^{-1}(\frac{9}{17})=58.03\)
Answer:
So, the measure of angle x is equal to 58.03.
Find the estimate and actual value of : 72.8 + 12.1
Mr. Farley used 4 pounds of hamburger to make 10 hamburger patties of the same size. How many pounds of hamburger did he use per patty?
Answer:
4.0
Step-by-step explanation:
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Division is one of the four fundamental arithmetic operations. The pounds of hamburgers that Mr. Farley used in each patty is 0.4 pounds per patty.
What is Division?The division is one of the four fundamental arithmetic operations, which tells us how the numbers are combined to form a new one.
Given that Mr. Farley used 4 pounds of hamburger to make 10 hamburger patties of the same size. Therefore, the pounds of hamburgers that Mr. Farley used in each patty is,
Pounds of hamburgers in each patty
= Total pounds of hamburger/Number of patty
= 4 pounds / 10 patty
= 0.4 pounds per patty
Hence, the pounds of hamburgers that Mr. Farley used in each patty is 0.4 pounds per patty.
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If 102y = 25, then 10-y equals:(a) -1/5 (b) 1/625 (c) 1/50(d) 1/25(e) 1/5I am sorry the pictures for this problem is not available.
ANSWER
\(\frac{995}{102}\)EXPLANATION
First, we have to solve the equation for y. To do this, divide both sides by 102:
\(\begin{gathered} \frac{102y}{102}=\frac{25}{102} \\ y=\frac{25}{102} \end{gathered}\)Now, let us find the value of the expression by substituting the value of y into the expression:
\(\begin{gathered} 10-y \\ \Rightarrow10-\frac{25}{102} \\ \Rightarrow\frac{995}{102} \end{gathered}\)That is the answer.
I need help question
Given:
The function
\(P=8e^{-3t}\)Required:
Find p , a.
Explanation:
We have
\(P=P_oa^t\)Now,
\(\begin{gathered} P_o=8 \\ a=e^{-3} \\ \text{ This function is called exponential decay.} \end{gathered}\)Answer:
Answered the question.
Quadrilateral ABCD is a rhombus.DA АC СBMatch the reasons that justifies the given statements.
A rhombus is a quadrilateral with 4 congruent sides.
For the Rhombus ABCD given
\(\begin{gathered} AB\mleft\Vert DC\text{ }\mright? \\ \\ \text{Opposite sides of a rho}mbus\text{ are parallel} \end{gathered}\)Also,
\(\begin{gathered} DA\cong CB \\ \text{Opposite sides of a rhombus are congruent} \end{gathered}\)Also,
\(\begin{gathered} <\text{ADC}\cong<\text{ABC} \\ \text{Opposite angles of a rhombus are congruent} \end{gathered}\)Find the perimeter around the entire figure
Step-by-step explanation:
P=2a+2b=2*9+2*14=46. ft
P(of the half circle)=πd/2=3.14*10/2=15.7
P(of the whole figure)=46ft+15.7ft=61.7ft
A triangle has side lengths of 6, 8, and 10. Is it a right triangle? Explain.
Answer:
yes
Step-by-step explanation:
Yes it is, assuming we decide to use the Pythagorean Theorem to find the hypotenuse (10) it'll be possible considering the formula is c²=√a²+b²
(c being the longest side of the triangle)
a= 6 and b= 8
You have several numbers in a data set: 5, 7, 9, 11, 13, 15, 17. What is the z Score for the number 15? (the SD is 4.32)
The value of the z-score for the number 15 in a data set is 0.93.
Define z-score.
A data point's z-score, also known as a standard score, indicates how far it deviates from the mean. In practical terms, however, it's a measurement of how many standard deviations a raw number is from or above the population mean.
You can plot a z-score on a normal distribution graph. Z-scores can be anywhere between -3 and +3 standard deviations.
∴ z = (x – μ) / σ
Given:
σ = 4.32
x = 15
Data set: 5, 7, 9, 11, 13, 15, 17
So, mean = 5 + 7 + 9 + 11 + 13 + 15 + 17/7
= 77/7
μ = 11
z = (x – μ) / σ
= (15 - 11)/4.32
= 4/4.32
z = 0.93
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Lola bought 4.25 yards of ribbon. The ribbon cost $1.59 per yard. What was the
total cost of her ribbon to the nearest cent?
Fill in the blanks with an operation symbol and a number to complete the
equation.
4.25___$1.59 = $_
The price of an item has risen to $186 today. Yesterday it was $120 find the percentage increase
Answer:
55%
Step-by-step explanation:
180-120=66
66/120 = 0.55
55%
Help! I am being timed. Thank you
Answer:
C
Step-by-step explanation:
HELP!! URGENT!!
Find the perimeter of the triangle. Simplify your answer.
The expression that represent the perimeter of the triangle is 3d² - 4d + 1.
What is the perimeter of the given triangle?The perimeter of any two-dimensional figure is simply the distance around the figure.
Hence, the perimeter of the triangle is the sum of all its 3 side lengths.
From the diagram:
Side length 1 = ( d² + 3 )
Side length 2 = ( 4d² + 3d - 2 )
Side length 3 = ( -2d² - 7d )
Hence, the perimeter of the triangle will be:
Perimeter = side length 1 + side length 2 + side length 3
Plug in the expressions
Perimeter = ( d² + 3 ) + ( 4d² + 3d - 2 ) + ( -2d² - 7d )
Collect and add like terms:
Perimeter = d² + 3 + 4d² + 3d - 2 + -2d² - 7d
Perimeter = d² + 4d² - 2d² + 3d - 7d + 3 - 2
Perimeter = 3d² - 4d + 1
Therefore, the perimeter is 3d² - 4d + 1.
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Which expression is equivalent to 1/5 × 3
help 5 start rating helpp\ plzzzzz
Answer:
hwbqjakakakakakakamamakjajajq
Shannon was born on 12/21/1982. How many eight-digit codes could she make using the digits in her birthday?
Answer:
The value is \(Z = 1120 \ eight -digit \ code \)
Step-by-step explanation:
From the question we are told that
The birth date of Shannon is 12/21/1982
Generally the number of digits present in her birth date is N = 8
Looking at the date we can see that 1 repeated 3 times
2 repeated 3 times
Generally the total number eight -digit code that she could make using her birthday given the total number of digits that make up her birth date is N = 8
is mathematically represented as
K = 8!
but but given that digit 1 repeated itself 3 times , and 2 repeated itself 3 times then the total number of eight -digit code that she could make using her birthday will be mathematically evaluated as
\(Z = \frac{K}{3 ! * 3!}\)
=> \(Z = \frac{8!}{3 ! * 3!}\)
=> \(Z = \frac{8* 7*6*5* 4 * 3!}{3 ! * 3* 2*1 }\)
=> \(Z = 1120 \ eight -digit \ code \)
Shannon could make 40,320 eight-digit codes using her digits in her birthday.
Given that Shannon was born on 12/21/1982, to determine how many eight-digit codes could she make using the digits in her birthday, the following calculation must be performed:
8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = X 56 x 30 x 12 x 2 = X 1680 x 24 = X 40320 = X
Therefore, Shannon could make 40,320 eight-digit codes using her digits in her birthday.
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PLEASE HELP ME!!!!!!!!!!!!!!!!!A class room took a survey and asked how many students like spicy food, Below is their ratio of boys to girls that like spicy food.
Plot the points based on the ratio table below
Boys Girls
3. 2.
6. 4.
12. 8.
15. x
Answer: x = 16
Step-by-step explanation: The y values keep going up by multiplying 2. 2x2=4, 4x2=8, so 8x2=16.
To plot the points just put the point coordinated with the x values and y values.