Answer:
A two-sample t-test for a difference between population means
Step-by-step explanation:
Answer:
D) A two-sample t -test for a difference between population means
Step-by-step explanation:
Two random samples are selected on a quantitative variable, and the difference in the sample means will be calculated. The appropriate test is the two-sample t-test for a difference in population means.
A family has two cars. The first car has a fuel efficiency of 15 miles per gallon of gas and the second has a fuel efficiency of 40 miles per gallon of gas. During one particular week, the two cars went a combined total of 1525 miles, for a total gas consumption of 60 gallons. How many gallons were consumed by each c the two cars that week?
First car: gallons
Second car: gallons
Step-by-step explanation:
685 a piece per car split
The top of a building is a cone 10 meters tall with a radius of 4 meters at the base. Round to the nearest hundredth.
Answer:
V = 167.55 m³
Step-by-step explanation:
Given that,
The height of a cone, h = 10 m
Radius of the cone, r = 4 m
It can be assumed to find the volume of the cone. Th formula for the volume of a cone is given by :
[tex]V=\dfrac{1}{3}\pi r^2 h\\\\V=\dfrac{1}{3}\pi \times (4)^2\times 10\\\\V=167.55\ m^3[/tex]
So, the required volume is 167.55 m³.
300 times what is 1800
Answer:
6
Step-by-step explanation:
1800/300=6
Write the expression in expanded form.
(4.2z)(-5y-3)
x−8≥4
x=?
please explain how you got the answer
Answer:
[tex]x \geqslant 12[/tex]
Step-by-step explanation:
[tex]x - 8 \geqslant 4[/tex]
Move the constant to the right-hand side and change its sign
[tex]x \geqslant 4 + 8[/tex]
Add the numbers
[tex]x \geqslant 12[/tex]
Alternate form
x∈[12 , + ∞》
Solve the equation. 2t +8= -10 solve for t
Answer:
t= -9
Step-by-step explanation:
Answer:
Step-by-step explanation:
2t+8=-10, subtract 8 from each side
2t=-18, divide each side by 2
t=-9
17 = 5-x what's the answer
Answer:
X = - 12.
Step-by-step explanation:
17 = 5 - x
17 = 5 + - x
17 = - x + 5
Then, flip the equation.
-x + 5 = 17
Then subtract 5 from both of the sides.
-x + 5 - 5 = 17 - 5
-x = 12
Then divide
-x/ -1 = 12/1
x = - 12.
Hope this helps!
Answer: I worked it out on a piece of paper and attached it. The answer is X = -12
Step-by-step explanation:
Calculate 18% tip on a 6250 dinner bill
A 20% increase followed by a 25% decrease
Answer:
So basically 5%?
Step-by-step explanation:
hellppp 8(–10r+–1)+–r+2
Answer:
-81r - 6
Step-by-step explanation:
8(-10r - 1) - r + 2
use the distributive property
-80r - 8 - r + 2
combine like terms
-81r - 6
plz mark as brianliest if correct!!!
Solve the following expression when
t = 6 and d = 8
t + d = 8 - 6
Answer:
Hi! Your answer is 14 = 2
Step-by-step explanation:
Evaluate
what quadrant is the coordinate -3,2 in
Answer: the 2nd quadrant
Step-by-step explanation:
The first quadrant
(X,Y)
The second quadrant
(-X,Y)
The third quadrant
(-X,-Y)
The fourth quadrant
(X,-Y)
Ben takes a 45 minute test. After answering 10 questions, the timer indicates that one-fifth of the total time is up. How much time did Ben take to answer the 10 questions *
it took Ben 9 minutes to answer 10 questions
Onur is participating in a walkathon fundraiser. Two donors promised to donate money based on the total distance he walks. The money, A, in dollars, that he receives from the first donor given that he walks d kilometers is given by the formula A(d)=10d. The money, B, in dollars, that he receives from the second donor given that he walks d kilometers is given by the formula B(d)=2d+d^2.
Let T be the total money that Onur raises from those donors by walking d kilometers in the walkathon.
Write a formula for T(d), in terms of A(d) and B(d).
T(d)= ?
Write a formula for T(d), terms of d.
T(d)=?
Answer:
1. T(d) = A(d) + B(d)
2. T(d) = 12d + d²
Step-by-step explanation:
From the question given above, the following data were obtained:
A(d) = 10d
B(d) = 2d + d²
1. Determination of the formula of T(d) in terms of A(d) and B(d).
T(d) is the total money obtained. Thus,
T(d) = A(d) + B(d)
2. Determination of the formula of T(d) in terms of d.
A(d) = 10d
B(d) = 2d + d²
T(d) =?
T(d) = A(d) + B(d)
T(d) = 10d + 2d + d²
T(d) = 12d + d²
The phone case you want to buy is marked down 30% and you have a 25% off coupon. You pay 42 dollars. Can this equatio be used to find the original cost of the phone case?If so what is the original price of the item. Explain.
Answer:
Step-by-step explanation:
Original price = x
75% of 70% of x = $42
0.75*0.70x =$42
x = $42/(0.75*0.70) =$42/0.525 = $80
12. ALGEBRA Sherri Cole found that the 12-ounce can of frozen orange juice
sells for $0.16 less than the 16-ounce can, which is $0.68 less than the
24-ounce can. If the unit price of the 24-ounce can is $0.005 less than the
unit price of the 12-ounce can, which of the three is the best buy based
on the lowest unit price?
Answer:
96 = x
Step-by-step explanation:
I'm going to use cents instead of dollars because I find decimals and fractions to be cumbersome. I assume you meant $.005 instead of 4.005.
Let x denote the price (in cents) of the 12-ounce can. Then the price of the 16-ounce can is (x + 16) cents, and the price of the 24-ounce can is ((x + 16) + 68), or (x + 84) cents.
The unit price (cents per ounce) of the 12-oz can is x/12
The unit price of the 16-oz can is (x + 16)/16
The unit price of the 24-oz can is (x + 84)/24
You are told that, in terms of x,
(x + 84)/24 = x/12 - 0.5
Multiply both sides by 24:
x + 84 = 2x - 12
Solve for x:
96 = x
So the unit prices (in cents per ounce) are:
12 oz: 96/12 = 8 cents/oz
16 oz: 112/16 = 7 cents/oz
24 oz: 180/24 = 7.5 cents/oz
So the 16 ounce can is the best buy based on lowest unit price.
In this exercise we have to use the knowledge of finance to calculate the best price to be offered, in this way:
[tex]12 oz: 96/12 = 8 cents/oz\\16 oz: 112/16 = 7 cents/oz\\24 oz: 180/24 = 7.5 cents/oz[/tex]
Some values should be simplified as they were informed in the statement:
The unit price (cents per ounce) of the 12-oz can is x/12The unit price of the 16-oz can is (x + 16)/16The unit price of the 24-oz can is (x + 84)/24So putting together an equation with these values and terms informed we find that:
[tex](X + 84)/24 = X/12 - 0.5\\X + 84 = 2X - 12\\X=96[/tex]
So with the value of X found it is only necessary to use the previous equations and replace this value.
See more about finances at brainly.com/question/10024737
What is the equation of the line that passes through the point (4, -2) and has a
slope of -22
Answer: the answer is y=-22x+86
here is why:
the slope is -22 which is the m --> y=mx+b the point is (4,-2) the x=4 and y= =2
If we set up the equation:
-2= -22(4)+86
-2= -88+86
-2= -2
Pls help ASAP!!!!!!!!!!!!!
Answer:
i thank 180 or 115×31=
Step-by-step explanation:
i am not sure sorry):
Johanne packed 10 boxes of apples each day for 8 days. What is the total number of boxes Johanne packed?
Answer:
80 10x8 is 80
your welcomr
The population of a small town is 7,300. if the population is growing by 4% each year, how long will it take for the population to reach 12,000?
(20 points.) Find the length of the side marked with the variable 'x'.
Answer:
EX:Jermaine has a triangle with sides 8, 14, and 20. ... For the points R(-2, 7) and P (2, 1) determine each of the following without graphing a. ... -2 ) é y = -x tb y = 2x+0 ... Find the lengths of the unknown sides that are marked with a variable. L. 4.
Step-by-step explanation:
Tomas is packing 7 baskets for a fair. He is placing 8 apples in each basket.How many apples are there
Answer:
There are 56 apples
Step-by-step explanation:
Multiply the number of apples by the number of baskets.
7 × 8 = 56
Hope this Helps!:)
2. Y - 3 = X + 2
2X - 1 = Y
Show your work
Which of the following equations does not represent a linear relation?
a) y = 4x^2 - 7
b) y = 3x + 45
c) 4x - 3y = 8
d) 10x = 5y - 2
"The product of -4 and a number is greater than 8."
Answer: inequality???? -4x < 8 flip sign
Solved would be x < 2
Step-by-step explanation:
Help needed on this similar triangle question
The rectangle below has an areas of x^2+8x+15 square metres and a width of x+3 meters what expression represents the length of the rectangle
Answer: x+5 or ((x^2+8x+15)/(x+3))
Step-by-step explanation: First let's assign our variables.
x^2+8x+15 = Area
X+3 = Width
? = Length
If the equation of a=lw, then we can substitute in our variables.
a=lw
x^2+8x+15= L (x+3)
Now we must isolate L.
Divide both sides of the equation by 'x+3'
x^2+8x+15= L (x+3)
x+3 x+3
x+5= L
The stem-and-leaf plot lists the number of coupons saved per person in a coupon club.
How many club members saved at least 41 coupons?
Enter your answer in the box.
A stem-and-leaf plot with a stem value of 1 with a leaf value of 2, 2, 4, 5, 7, a stem value of 2 with a leaf value of 8, 9, a stem value of 3, a stem value of 4 with a leaf value of 0, 1, 4, 5, a stem value of 5 with a leaf value of 0, and a stem value of 6 with a leaf value of 9.
Key: 1|2 means 12
Answer:
Your answers 5 :)
Step-by-step explanation:
I took the test and i did it in my head ignore the other person, thanks please mark brainliest!
Answer:
i have your answer!
Step-by-step explanation:
your answer is five, hope this helps
A. 8.06
B. 8.1
C. 8
D. 65
Answer:
its c
Step-by-step explanation:
A
B
What is the distance between Points C and
D?
-4 units
4 units
6 units
2 units
Math homework PLS HELP What is the distance between points C and D?