Answers
Answer:
c
Step-by-step explanation:
Related Questions
HELPPPPPPPPPP FAST PLSSSSSSSSSSSSSSSSSSSSS
Answers
2(x + 1),
x = 5
Substitute
Answers
Answer:
12
Step-by-step explanation:
2(5+1) =
2(6) =
12
Cube X has Edge 1 in. tube why has an edge 4in longer than Cube X. which of the following describes the relationship between the cubes?
a. the volume of cube why is 125 times the volume of cube X
b. the volume of cube why is 25 times the volume of Cube X
c. the volume of cube x is 1/4 the volume of Cube Y
d. the volume of cube x is 1/5 the volume of Cube Y
Answers
9514 1404 393
Answer:
a. the volume of cube y is 125 times the volume of cube x
Step-by-step explanation:
The volume of cube x is ...
V = s³ = (1 in)³ = 1 in³
The volume of cube y is ...
V = (1 in + 4 in)³ = (5 in)³ = 125 in³
The volume of cube y is 125 times the volume of cube x.
Find the value of H if H = I^2 R^t÷4.2,R =8.3,I=2.4 and t=37
Answers
Answer:
[tex]H = 6492.97[/tex]
Step-by-step explanation:
Given
[tex]H = \frac{I^2Rt}{4.2}[/tex]
[tex]R =8.3;\ I=2.4;\ t=37[/tex]
Required
Find H
We have:
[tex]H = \frac{I^2Rt}{4.2}[/tex]
[tex]H = \frac{37^2 * 8.3 * 2.4}{4.2}[/tex]
Solve the exponents
[tex]H = \frac{1369 * 8.3 * 2.4}{4.2}[/tex]
[tex]H = \frac{27270.48}{4.2}[/tex]
[tex]H = 6492.97[/tex]
David measures a side of a piece of wood. The length is 8 feet and the width is one-half of the
length. What is the area, in square feet, of the piece of wood?
Formula:
Area = Length x Width
Answers
Answer:
32
Step-by-step explanation:
8÷2=4 8(length)x4(width)=32(area)
As part of the Pew Internet and American Life Project, researchers conducted two surveys in late 2009. The first survey asked a random sample of 800 U.S. teens about their use of social media and the internet. A second survey posed similar questions to a random sample of 2253 U.S. adults. In these two studies, 73% of teens and 47% of adults said that they use social networking sites. Use these results to construct and interpret a 95% confidence interval for the difference between the proportion of all U.S. teens and adults who use social networking sites.
Answers
Answer:
The 95% confidence interval for the difference between the proportion of all U.S. teens and adults who use social networking sites is (0.223, 0.297). This means that we are 95% sure that the true difference of the proportion is in this interval, between 0.223 and 0.297.
Step-by-step explanation:
Before building the confidence interval we need to understand the central limit theorem and the subtraction of normal variables.
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]
Subtraction between normal variables:
When two normal variables are subtracted, the mean is the difference of the means, while the standard deviation is the square root of the sum of the variances.
Sample of 800 teens. 73% said that they use social networking sites.
This means that:
[tex]p_T = 0.73, s_T = \sqrt{\frac{0.73*0.27}{800}} = 0.0157[/tex]
Sample of 2253 adults. 47% said that they use social networking sites.
This means that:
[tex]p_A = 0.47,s_A = \sqrt{\frac{0.47*0.53}{2253}} = 0.0105[/tex]
Distribution of the difference:
[tex]p = p_T - p_A = 0.73 - 0.47 = 0.26[/tex]
[tex]s = \sqrt{s_T^2+s_A^2} = \sqrt{0.0157^2+0.0105^2} = 0.019[/tex]
Confidence interval:
Is given by:
[tex]p \pm zs[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
95% confidence level
So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].
Lower bound:
[tex]p - 1.96s = 0.26 - 1.96*0.019 = 0.223[/tex]
Upper bound:
[tex]p + 1.96s = 0.26 + 1.96*0.019 = 0.297[/tex]
The 95% confidence interval for the difference between the proportion of all U.S. teens and adults who use social networking sites is (0.223, 0.297). This means that we are 95% sure that the true difference of the proportion is in this interval, between 0.223 and 0.297.
Alexa and Savannah are both driving along the same highway in two different cars to
a stadium in a distant city. At noon, Alexa is 600 miles away from the stadium and
Savannah is 350 miles away from the stadium. Alexa is driving along the highway at a
speed of 50 miles per hour and Savannah is driving at speed of 25 miles per hour. Let
A represent Alexa's distance, in miles away from the stadium t hours after noon. Let
S represent Savannah's distance, in miles, away from the stadium t hours after noon.
Graph each function and determine how far both Alexa and Savannah are from the
stadium at the moment they are an equal distance from the stadium.
Answers
S=350-25t
600-50t = 350-25t
600=350+25t
250=25t
t=10 hrs when they are the same distance.
At 10 hrs, they are 100 miles away from the stadium
Which is a shrink of an exponential growth function?
f(x) = One-third(3)x
f(x) = 3(3)x
f(x) = One-third (one-third) Superscript x
f(x) = 3 (one-third) Superscript x
Answers
Answer:
3 zero
Step-by-step explanation:
Answer:
The correct answer is A
Step-by-step explanation:
Hope This Helps
PLEASE HELP THIS IS DUE SOON!
Sales Hester sells televisions. She earns a fixed amount for each television and an additional $20if the buyer gets an extended warranty. If Hester sells 19 televisions with extended warranties, she
earns $1,710. How much is the fixed amount Hester earns for each television?
The fixed amount Hester earns for each television she sells is $]
Answers
Answer:
380
Step-by-step explanation:
multiply 20 x 19
the difference of x and y is the same as 3 times the sum of x and 2
Answers
Answer:
x - y = 3(x + 2)
x - y = 3x + 6 is the simplified answer and is also correctStep-by-step explanation:
The difference of x and y is the same as 3 times the sum of x and 2
x - y = 3(x + 2)
x - y = 3x + 6
If Bill hiked 6.5 miles at a rate of 10.4 mph, how long did it take him to complete his hike?
Answers
Answer:
32 minutes or .5333 of an hour
Step-by-step explanation:
Which statement is true about the equations -3x + 4y = 12 and %x-Ay=17
O The system of the equations has exactly one solution at (-8, 3).
The system of the equations has exactly one solution at (-4, 3).
The system of the equations has no solution, the two lines are parallel.
O The system of the equations has an infinite number of solutions represented by either equation.
Answers
Answer:
No solution, the lines are parallel.
Step-by-step explanation:
Any line can be represented by the equation
y = mx + b
where m is the slope and b is the y intercept.
-3x + 4y = 12
4y = 3x + 12
y = 3/4 x + 3
AND
1/4 x - 1/3 y = 1
- 1/3 y = - 1/4 x + 1
-4y = -3x + 12
4y = 3x - 12
y = 3/4 x - 3
If you get both equations in this form it is evident that the slopes m are the same (parallel) but the y intercept's b are different (not the same line). Therefore no solution.
Which equation represents a line that is parallel to the line y = - 4x +5?
(1) y = - 4x + 3
(2) y=1/4x+3
(3) y=-1/4x+5
(4) y = 4x +5
Answers
slope is still the same so it would be parallel to that line. Only the y-intercept is different so it would just pass through a different point
option 1 is the answer.
Which could be the dimensions of a rectangular prism whose surface area is greater than 140 square feet? Select three options.
6 feet by 2 feet by 3 feet
6 feet by 5 feet by 4 feet
7 feet by 6 feet by 4 feet
8 feet by 3 feet by 7 feet
8 feet by 4 feet by 3 feet
Answers
Answer
B. 6 feet by 5 feet by 4 feet
C. 7 feet by 6 feet by 4 feet
D. 8 feet by 3 feet by 7 feet
Answer:b c d
Step-by-step explanation:
conformidad
The diagram below shows a side view of a set of stairs. What is the area shown?
No links, docs, files, drives etc
I will mark the correct answer brainlyest
You earn many points
Answers
Answer:
468
Step-by-step explanation:
Answer:
468
Step-by-step explanation:
First, we want to break this up into separate pieces, there will be 3 rectangles and 1 square.
each rectangle has a height of 6 and a width of 24. so the area of each rectangle would be 6*24 or 144, then we multiply that by 3 because there are 3 rectangles, when we multiply 144*3 we will get 432.
Now we must solve for the area of the square, on each side, it is 6 cm so we multiply 6*6 so we get 36, that's all we need to do for that now.
to get our final answer we add both answers together so, 432+36 then our final answer is 468 cm
Show all 4 steps of the following:
x - 3/5= 1/6
Answers
Answer: x=23/30
Step-by-step explanation: Hope this help :D
i need help please
...... no linksssssssssss
Answers
Answer:
What do you want us to find???
Step-by-step explanation:
what is the area of this figure?
Answers
Answer:
4 ssquare units
Step-by-step explanation:
Plz will be brainleist and worth 20 pt
Answers
Answer:
B
Step-by-step explanation:
J = distributive
G = commutative
Find the surface area of the rectangular prism.
4 yd
(2 yd
1 yd
Answers
Answer:
4 x 2 x 1 = 28
Step-by-step explanation:
12
i hope this helped sorry if it's wrong but i wish you luck (i am not good with math)
Which of the fractions shown has the greatest value?
24
47
13
49
Answers
i’m pretty sure it should be 49..?
A bag contains 4 red balls and 6 green balls. You plan to select 3 balls at random. Determine the probability of selecting 3 green balls.
Answers
Red: 4/10chance of being selected
Green: 6/10 chance of being selected
Basically, there is a way higher chance of selecting 3 green balls and an even HIGHER chance of selecting 6!
Write the equation of a linear function that has a slope of ‒3 and a y-intercept of ‒2.
Answers
Answer:
y=-3x-2
Step-by-step explanation:
The current altitude of the plane is 15400 feet above the ground and the plane's horizontal distance to the airport is 200000 miles away. What angle of depression must the pilot make on his descent in order to safely land on the runway>
Answers
Answer:
0.441°
Step-by-step explanation:
tan = 1540/200000
tan = 0.0077
tan-1(0.0077) = 0.441
angle of depression is 0.0441°
VERY URGENT PLS LOOK AT PICTURE
Answers
Answer:
Number of year = 25 year and 7 month (Approx.)
Step-by-step explanation:
Given:
Amount deposit = $200,000
Future amount = $1,000,000
Rate of interest = 6.5%
Find:
Number of year
Computation:
Using compound amount formula;
A = P[1+r]ⁿ
1,000,000 = 200,000[1+6.5%]ⁿ
1,000,000 / 200,000 = [1+6.5%]ⁿ
5 = [1+0.065]ⁿ
n = 25.557
Number of year = 25.557
Number of year = 25 year and 7 month (Approx.)
What value of N balances the scale
Answers
Find the surface area of the regular pyramid
Answers
Answer:
26.8
Step-by-step explanation
HELP ASAP!!
Combine like terms:
-7x + 8 - 4x - 9
answers:
1. -11x - 1
2. -3x - 1
3. -11x + 17
4. -12
Answers
Answer:
The answer for -7x + 8 - 4x - 9 is 1. -11x-1
Jasper borrowed $985 for a new TV and game system. He will make 6 payments of $190 to repay the loan. How much will he pay in interest?
Answers
Answer:
$155
Step-by-step explanation:
If the TV costs $985 and Jasper pays 6 * $190 = 1190 then Jasper pays $1140 - $985 = $155 in interest.
Answer:
155
Step-by-step explanation:
190
×6=1140-985=155
What will happen to a cup of water if it is left in the sun for an extended amount of time? A. It will increase in volume B. It will decrease in volume C. It will stay the same volume
Answers
Answer:
c
Step-by-step explanation:
correct me if I'm wrong
Answer:
B-It will decrease in volume
Step-by-step explanation:
If I am not mistaken, the water, if left in the sun, will evaporate when heated, so the volume will decrease.