Answer: x = 3, and z = 111
Step-by-step explanation:
The opposite angles 69 and 6x + 51 are equal:
6x+51 = 69
x = 3
Angle z and angle 69 share a straight line, so the sums of theeri angles is 180:
z + 69 = 180
z = 111
The function f(x) represents the amount charged by gardner A for x hours of work, and g(x) represents the amount charged by gardener B for x hours of wok.
x f(x) g(x)
2 100 220
4 200 280
6 300 340
8 400 400
10 500 460
For how many hours of work will the gardeners charge the same amount, and how much will they charge?
Please help me ASAP!!!
Answer:
the third one (2,-18)
Step-by-step explanation:
Helppp pleaseee asappp
(a) 8:30 am
(b) 17 minutes
(c) 10:15
Find the midpoint of CD.
C = (-4,7) and D = (4,-1)
Answer:
(0, 3)
Step-by-step explanation:
midpoint = x1+ x2 ÷2
y1+ y2 ÷ 2
A language arts test is worth 100 points. There is a total of 26 questions. There are spelling word questions that are worth 2 points each and vocabulary word questions worth 5 points each. How many of each type of question are there?
Answer: 3.8 should be your answer hope this helped
Step-by-step explanation:
pleas make brainly
Comeplete the equivalent equation of -7x-60=x(2)+10x
Answer:
\(3 \frac{3}{ 19} \)
KL = 2x + 2
JL = 55, and
JK = 7* +8,
Find KL.
J
K
L
Answer:
KL = 12Step-by-step explanation:
JK + KL = JL
where:
JK = 7x + 8
KL = 2x + 2
JL = 55
plugin values into the equation:
7x + 8 + 2x + 2 = 55
7x + 2x = 55 - 8 - 2
9x = 45
x = 45 / 9
x = 5
KL = 2x + 2
KL = 2(5) + 2
KL = 12
2.) True or False?
When working with a function, substituting a certain value of x into the formula gives only one value of y for that value of x.
Answer:
TRUE
Step-by-step explanation:
In a function, every domain value (x-value) must have exactly one corresponding range value (y-value). This means that in a function, an x-value or input value cannot have two different y-value or output value. Or else, it ceases to be a function.
So, when you substitute a certain value of x into the equation of a function, you can only have one exact value of y for that value of x.
As an estimation we are told £3 is €4.
Convert £28.20 to euros.
Give your answer rounded to 2 D
Answer:
21
Step-by-step explanation:
If the scale of a map is 1:32000 then what will be the actual distance of 20 cm on the map?
Therefore, By using the formula actual distance = (Map distance) x (Scale ratio) the actual distance of 20 cm on the map of 1:32000 is 0.000625 km or 625 meters.
Define Scale ratio.A ratio scale is a numerical scale with a genuine zero and uniform distances between adjacent points. The Kelvin scale is an illustration of a ratio scale. The actual zero point exists on a Kelvin scale.
What are adjacent points?Two locations that are close to one another are said to be adjacent points.
A scale of 1:32000 means that one unit of measurement on the map represents 32000 units of the same measurement in the real world.
To calculate the actual distance of 20 cm on the map,
We know,
Actual distance = (Map distance) x (Scale ratio)
Actual distance = (20 cm) x (1/32000)
Actual distance= 20/32000
Actual distance = 0.000625 km or 625 meters.
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Please help asapppppppppoppppp
Radius of the semicircle is 8 km and diameter is 16 km.
What is area of the semicircle?
The area of the semicircle can be determined using the formula,\(A = 1/2 * \pi * r^2\)
The area of a semicircle is given by the formula:
\(A = 1/2 * \pi * r^2\)
where A is the area and r is the radius.
We are given that the area of the semicircle is 32π km². So, we can set up the equation:
\(32\pi = 1/2 * \pi * r^2\)
Simplifying this equation, we get:
r² = (2 × 32π) / π = 64
Taking the square root of both sides, we get:
r = 8 km
So, the radius of the semicircle is 8 km.
The diameter of the semicircle is twice the radius, so:
d = 2r = 2 × 8 km = 16 km
Therefore, the diameter of the semicircle is 16 km.
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Solve equation.
4 x+7=-1
Answer:
or;4x=-1-7
or;4x=-8
or;x=-8/4
x=-2
Consider the t distribution with 21 degrees of freedom.(a) What proportion of the area under the curve lies to the left of t = - 2.518?(b) What proportion of the area lies to the right of t = 1.323?(c) What proportion of the area lies between t = -1.721 and I = 2.831?(d) What value of t cuts off the lower 2.5% of the distribution?
(a) The proportion of the area under the curve lying to the left of t = -2.518 is 0.0105. (b) The proportion of the area lying to the right of t = 1.323 is 0.1004. (c) The proportion of the area lying between t = -1.721 and t = 2.831 is 0.995. (d) The value of t that cuts off the lower 2.5% of the distribution is -2.080.
(a) The proportion of the area under the curve that lies to the left of t = -2.518 can be found by using the t distribution table. For 21 degrees of freedom and t = -2.518, the corresponding area is 0.0105.
(b) The proportion of the area under the curve that lies to the right of t = 1.323 can be found by using the t distribution table. For 21 degrees of freedom and t = 1.323, the corresponding area is 0.1004.
(c) The proportion of the area under the curve that lies between t = -1.721 and t = 2.831 can be found by subtracting the area to the left of t = -1.721 from the area to the left of t = 2.831. Using the t distribution table, the area to the left of t = -1.721 is 0.0505 and the area to the left of t = 2.831 is 0.995.
(d) The value of t that cuts off the lower 2.5% of the distribution can be found by using the t distribution table. For 21 degrees of freedom and an area of 0.025 to the left of t, the corresponding value of t is -2.080.
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What is the area of this polygon?
Enter your answer in the box.
units?
Check the picture below.
so the polygon is really just a 5x7 rectangle with a triangle that has a base of 7 units(vertically) and a height of 2 units.
\(\stackrel{\textit{\LARGE Areas}}{\stackrel{rectangle}{(5)(7)}~~ + ~~\stackrel{triangle}{\cfrac{1}{2}(7)(2)}}\implies 35~~ + ~~7\implies \text{\LARGE 42}~units^2\)
based on the residual plot shown, is a linear model appropriate for comparing tree age to basal area? because the residuals are centered about zero, a linear model is appropriate. because the residual plot does not show a clear pattern, a linear model is appropriate. because the residual plot shows a random a scatter of points, a linear model is not appropriate. because the residual plot does not appear linear, it is likely that tree age and basal area do not have a linear relationship.
Answer:
Because the residual plot does not show a clear pattern, a linear model is appropriate.
Step-by-step explanation:
The regression sum of squares (RSS) represents: a. The amount of variation in Y around its mean that the regression function can account for. b. The amount of variation in the dependent variable that is not explained by the regression function. c. The amount of variation in the independent variable that is not explained by the regression function. d. The amount of variation in the residuals that is explained by the regression function.
The regression sum of squares (RSS) represents: a. The amount of variation in Y around its mean that the regression function can account for.
What is regression sum of squares?
The regression sum of squares serves as the sum of the differences that exist between the predicted value and the mean of the variable.
The Sum of Squared Error however states the difference between the observed and the predictive value.
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Helpp me pleasee (algebra)
Answer:
Step-by-step explanation:
answer = 1/2 r + m
m = 7
r = 8
answer = 1/2 * 8 + 7
answer = 4 + 7
answer = 11
what is the volume of the solid, if the length is 4 centimeters, the width is 8 centimeters and the height is 12 centimeters?
Answer:
384 cm^3
Step-by-step explanation:
the volume formula:
V = a*b*c,
where a - length, b - width, c - height
so, the volume of the solid is V = 4*8*12 = 384 cm^3
The volume of the solid, if the length is 4 centimeters, the width is 8 centimeters, and the height is 12 centimeters is 384 cm³.
To find the volume of the solid, we need to multiply the length, width, and height together. So, the volume of the solid is:
V = l x w x h
V = 4 cm x 8 cm x 12 cm
V = 384 cm³
Therefore, the volume of the solid is 384 cubic centimeters (cm³).
To find the volume of a solid with given dimensions, you can use the formula for the volume of a rectangular prism, which is Volume = Length × Width × Height. In this case, the length is 4 centimeters, the width is 8 centimeters, and the height is 12 centimeters.
Now, let's plug these values into the formula:
Volume = (4 cm) × (8 cm) × (12 cm)
By multiplying these numbers together, you'll get the volume of the solid:
Volume = 384 cubic centimeters (cm³)
So, the volume of the solid with the given dimensions is 384 cm³.
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The number of observations in a complete data set having 10 elements and 5 variables is _____ ... a. data b. variables c. elements d. variables and elements.
The number of observations in a complete data set with 10 elements and 5 variables is a. data.
In the context of data analysis, a complete data set refers to a collection of data that includes all the required observations or cases. In this scenario, the data set consists of 10 elements, which represent the individual observations or data points. Each element is associated with 5 variables, which are the characteristics or attributes being measured or observed.
Therefore, the number of observations in this data set is determined by the number of elements, which is 10. The term "observations" refers to the individual data points or cases in the data set. The other options, such as "variables" and "elements," do not accurately represent the count of observations in this context.
Hence, the correct answer is a. data, indicating that the number of observations in the complete data set is determined by the number of elements, which in this case is 10
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A truck is shipping jugs of drinking water and cases of paper towels. A jug of drinking water weighs 35 pounds and a case of paper towels weighs 25 pounds. The truck can carry 1,600 pounds of cargo altogether.
1. Complete the table showing three ways the truck could be packed with jugs of water and cases of paper towels.
jugs of drinking water, w
cases of paper towels,
2. Write an equation relating the number of jugs of water, w, and the number of cases of paper towels, t, the truck can carry.
Next →
Please help me, I’ll give you brainlyist point and like 50 points.
Using a system of equations, we have that:
1. The table is completed on the image given at the end of the answer.
2. The equation is: 35w + 25t = 1600.
What is a system of equations?A system of equations is a set of equations in the context of a problem, and solving these equations, the numeric value of each variable in the context of the problem is found.
The variables in this problem are defined as follows:
Variable w: number of jugs of water.Variable t: cases of paper towels.A jug of drinking water weighs 35 pounds and a case of paper towels weighs 25 pounds. The truck can carry 1,600 pounds of cargo altogether. Hence the equation is:
35w + 25t = 1600.
When w = 10, the numeric value of t is obtained as follows:
35(10) + 25t = 1600
t = (1600 - 350)/25
t = 50.
When w = 30, the numeric value of t is obtained as follows:
35(30) + 25t = 1600
t = (1600 - 1050)/25
t = 22.
When t = 8, the numeric value of w is obtained as follows:
35w + 25(8) = 1600
w = 1400/35
w = 40.
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Lillian purchased a guitar from Smash Music Stores. It regularly sold
for $670, but was on sale at 10% off. She paid 8% tax. She bought it on
the installment plan and paid 15% of the total cost with tax as a down
payment. Her monthly payments were 558 per month for one year.
a. What is the discount?
b. What is the sale price?
What is the sales tax?
d. What is the total cost of the guitar?
e. What is the down payment?
f. What is the total of the monthly payments?
g. What is the total she paid for the guitar on the installment
plan?
h. What is the finance charge?
Answer:
Step-by-step explanation:
Rationalise the denominator of:
(3√2 - 2√3)/(√8 + √27)
Step-by-step explanation:
\( \large{ \sf \underline{Solution - }}\)
\( \sf To \: rationalise \: = \: \dfrac{3 \sqrt{2} - 2 \sqrt{3}}{\sqrt{8} + \sqrt{27} } \)
\( \sf \dashrightarrow \dfrac{3 \sqrt{2} - 2 \sqrt{3}}{2 \sqrt{2} + 3 \sqrt{3} } \)
\( \sf \dashrightarrow \dfrac{3 \sqrt{2} - 2 \sqrt{3}}{2 \sqrt{2} + 3 \sqrt{3} } \times \dfrac{2 \sqrt{2} - 3 \sqrt{3}}{2 \sqrt{2} - 3 \sqrt{3}} \)
\( \sf Combine \: the \: fractions, \)
\( \sf \dashrightarrow \dfrac{(3 \sqrt{2} - 2 \sqrt{3})(2 \sqrt{2} - 3 \sqrt{3})}{(2 \sqrt{2} + 3 \sqrt{3} )(2 \sqrt{2} - 3 \sqrt{3})} \)
\( \sf \underline{Solving \: denominator} , \)
\( \sf We \: know \: that, \)
\(\sf \dashrightarrow \boxed{ \tt (a + b)(a - b) = a^{2} - b ^{2}}\)
\( \bf So , \)
\( \sf \dashrightarrow \dfrac{(3 \sqrt{2} - 2 \sqrt{3})(2 \sqrt{2} - 3 \sqrt{3})}{(2 \sqrt{2})^{2} - (3 \sqrt{3} )^{2} } \)
\( \sf \dashrightarrow \dfrac{(3 \sqrt{2} - 2 \sqrt{3})(2 \sqrt{2} - 3 \sqrt{3})}{8 - 27 } \)
\( \sf \dashrightarrow \dfrac{(3 \sqrt{2} - 2 \sqrt{3})(2 \sqrt{2} - 3 \sqrt{3})}{ - 19 } \)
\( \sf \underline{Solving \: numerator}, \)
\( \sf \dashrightarrow \dfrac{3 \sqrt{2} (2 \sqrt{2} - 3 \sqrt{3})- 2 \sqrt{3}(2 \sqrt{2} - 3 \sqrt{3})}{ - 19 } \)
\( \sf \dashrightarrow \dfrac{12 - 9 \sqrt{6} - 4 \sqrt{6} + 18}{ - 19 } \)
\( \sf \dashrightarrow \dfrac{30 - 13 \sqrt{6} }{ - 19 } \)
\( \sf \dashrightarrow - \dfrac{30 - 13 \sqrt{6} }{ 19 } \)
\( \bf Hence, \)
\( \sf On \: rationalising \: we \: got,\)
\( \bf \dashrightarrow - \dfrac{30 - 13 \sqrt{6} }{ 19 }\)
help!!!
Let f(x) represent a function.
Which descriptions match the given transformations?
Drag and drop the answers into the boxes.
f(x−5/3)
f(x)−5/3
The function f(x - 5/3) is translated 5/3 units right and the function f(x) - 5/3 is translated 5/3 units down.
What are some rules for the transformation of functions?Suppose we have a function f(x).
f(x) ± d = Vertical upshift/downshift by d units (x, y ±d).
f(x ± c) = Horizontal left/right shift by c units (x - + c, y).
(a)f(x) = Vertical stretch for a > 0, vertical shrink a < 0. (x, ay).
f(bx) = Horizonatal compression b > 0, horizontal stretch for b < 0. (bx , y).
f(-x) = Reflection over the y-axis, (-x, y).
-f(x) = Reflection over x-axis, (x, -y).
Given, A function f(x) is transformed to f(x - 5/3) this results in f(x) is translated 5/3 units to the right along the x-axis.
And, The transformation f(x) - 5/3 is translated 5/3 units down along the y-axis.
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Marcus is considering adding one more dish to his menu, but he will only do so when he has
perfectly executed the recipe exactly as he will serve it in the truck 10 times. Each time he
makes the dish, there is an 80% chance that the execution is perfect.
What is the probability that Marcus has to make the new dish exactly 15 times before it goes on
the menu?
Suppose that Marcus has already perfectly executed the new recipe 5 times. There is an investor
that will meet with Marcus in 6 days, and if the new recipe is ready to be added to the menu at
the time of the meeting then he will double his investment in the food truck. If Marcus attempts
the recipe once per day until the meeting (so he has up to 6 attempts), what is the probability that
the investor will double his investment?
The probability that Marcus has to make the new dish exactly 15 times before it goes on the menu is approximately 0.053. The probability that the investor will double his investment is approximately 0.315.
To find the probability that Marcus has to make the new dish exactly 15 times before it goes on the menu, we need to calculate the probability of exactly 10 successes (perfect executions) out of the first 14 attempts and then the probability of a success on the 15th attempt. Each attempt has an 80% chance of success.
Using the binomial probability formula, the probability of exactly k successes in n attempts, with a success probability p, is given by:
\(P(X = k) = (n choose k) * (p^k) * ((1 - p)^(n - k))\)
In this case, we want to calculate\(P(X = 10) * P(X = 1) = (14 choose 10) * (0.8^10) * (0.2^4) * (0.8^1) = 0.0577 * 0.00016 ≈ 0.0092.\)
Therefore, the probability that Marcus has to make the new dish exactly 15 times before it goes on the menu is approximately 0.0092 or 0.92%.
To calculate the probability that the investor will double his investment, we need to consider the scenario where Marcus attempts the recipe once per day until the meeting. Since he has 6 days left and he has already executed the recipe 5 times successfully, he has 1 remaining attempt.
The probability of a success on the last attempt is 0.8, and the probability of failure is 0.2. Therefore, the probability that the investor will double his investment is P(X = 1) = 0.8.
Hence, the probability that the investor will double his investment is approximately 0.8 or 80%.
The binomial probability formula is used to calculate the probability of obtaining a certain number of successes in a fixed number of independent Bernoulli trials. In this case, Marcus's attempts to execute the recipe can be modeled as a binomial distribution since each attempt has a fixed probability of success (80%) and the attempts are independent. By applying the formula, we can determine the probabilities associated with the number of successes and make informed decisions based on those probabilities.
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What annual payment is required to pay off a four-year, $27,000 loan if the interest rate being charged is 9 percent EAR? What would the monthly payments be for the same loan assuming the same interest rate? Round time value factors to 3 decimal places and final answers to the nearest dollar amount
The monthly payments for the same loan would be approximately $694.12.
To calculate the annual payment required to pay off a four-year, $27,000 loan at an interest rate of 9 percent EAR, we can use the formula for the present value of an ordinary annuity:
PV = PMT * (1 - (1 + r)^(-n)) / r
Where:
PV = Loan amount = $27,000
PMT = Annual payment
r = Interest rate per period = 9% = 0.09
n = Number of periods = 4
Plugging in these values into the formula, we can solve for PMT:
$27,000 = PMT * (1 - (1 + 0.09)^(-4)) / 0.09
Simplifying the equation, we have:
$27,000 = PMT * (1 - 0.708222) / 0.09
$27,000 = PMT * 0.291778 / 0.09
PMT = $27,000 * 0.09 / 0.291778
PMT ≈ $8,329.40 (annual payment)
To calculate the monthly payments for the same loan, we can divide the annual payment by 12:
Monthly payment = $8,329.40 / 12
Monthly payment ≈ $694.12
Therefore, the monthly payments for the same loan would be approximately $694.12.
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A cellphone company collected data about students' texting skills. They collected the texting speed in words per minute according to time in minutes.Identify the data's independent and dependent variables.
The independent variable is ______.
The dependent variable is _______.
Answer:
independent is the time. time does change throughout the experiment.
Dependent is texting speed as it can vary.
hope this helps :)
(50000)^2×(0.00002)^3\(200)×(0.0000001)
Answer:
1
Step-by-step explanation:
concepts used is law of indices
where
(a^b)^c = a^bc
a^m/a^n = a^(m-n)
a^m *a^n = a^(m+n)
a^0 = 1
_______________________________________
50000)^2 = (5*10^4)^2 = 25*10^8
(0.00002)^3 = (2*10^-5)^3 = 8*10^-15
(0.0000001) = 10^-7
now
(50000)^2×(0.00002)^3\(200)×(0.0000001) = 25*10^8 * 8*10^-15/200*10^-7
= 200*10^8-15-(-7)/200 = 10^-7 +7 = 10^0 = 1
Thus,1 is the answer
Algebra Find the value of each variable.
pls help
Find the area of the polygon
The area of the right triangle is 216 square units.
Given is right triangle with height 18 units and hypotenuse 30 units we need to find the area of the right triangle,
To find the area of a right triangle, you can use the formula:
Area = (base × height) / 2
In this case, the height of the triangle is given as 18 units.
To find the base, we can use the Pythagorean theorem since the hypotenuse and height are known.
The Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.
Let's denote the base of the triangle as 'b'.
We have the following information:
Height (h) = 18 units
Hypotenuse (c) = 30 units
Using the Pythagorean theorem:
c² = a² + b²
30² = 18² + b²
900 = 324 + b²
b² = 900 - 324
b² = 576
b = √576
b = 24
Now that we have the height (18 units) and the base (24 units), we can substitute these values into the area formula:
Area = (base × height) / 2
Area = (24 × 18) / 2
Area = 432 / 2
Area = 216 square units
Therefore, the area of the right triangle is 216 square units.
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4. Consider a school similar to ours. We have a 67% graduation rate and a student-to-faculty ratio of 17:1, 34% of the classes have fewer than 20 students, 23% of the classes have more than 50 students, and we have a freshman retention rate of 77%. Should this school's giving rate be greater than or less than 8%
Based on the information provided, it is difficult to determine whether this school's giving rate should be greater than or less than 8%.
The factors mentioned, such as the graduation rate, student-to-faculty ratio, class sizes, and freshman retention rate, provide some insight into the school's characteristics but do not directly indicate the giving rate. The giving rate refers to the percentage of alumni or donors who contribute financially to the school.
To assess whether the giving rate should be greater than or less than 8%, additional information related to the school's fundraising efforts, alumni engagement, and past giving patterns would be necessary. Factors such as alumni participation rates, donation campaigns, and fundraising initiatives play a significant role in determining the giving rate.
Therefore, without specific data on the school's fundraising efforts and historical giving patterns, it is not possible to conclusively determine whether the giving rate should be greater than or less than 8%. Further analysis and information are needed to make an accurate assessment.
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