1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
emmasim [6.3K]
3 years ago
8

The area of a rectangular deck is 680 square feet. The deck’s width is 17 feet. What is its perimeter?

Mathematics
2 answers:
igomit [66]3 years ago
6 0
680/17=40
the length= 40
the width=17
17+17+40+40=114
Lubov Fominskaja [6]3 years ago
4 0
Start by finding the length of the deck.

Area of a rectangle is given by A=length*width.

Let's plug in the information that we know so far,

680 = length*17

solving for length, dividing by 17,

40 = length

Now that we know both dimensions of the rectangular deck,
let's calculate the perimeter,

P = 2length + 2width

P = 2(40) + 2(17)

P = 114

Hope that helps!
You might be interested in
Determine the range of the following graph:
serious [3.7K]
The range of the graph is…

[-4,4] or -4<=y<=4
6 0
1 year ago
Read 2 more answers
WILL MARK BRAINLIST!!!!
Nezavi [6.7K]

Answer:

Step-by-step explanation:

C??

I think

8 0
3 years ago
Isabel wants a coat that costs $60. She has saved $42. What fraction of the amount she needs has she saved ?
notka56 [123]
Simple.....

you have this fraction...

\frac{42}{60}

simplify...

42/6=7
and
60/7=10

Thus...\frac{7}{10}

Thus, she has saved \frac{7}{10} of the money.
8 0
3 years ago
The CEO of a large manufacturing company is curious if there is a difference in productivity level of her warehouse employees ba
blsea [12.9K]

Answer:

The test statistic is z = -2.11.

Step-by-step explanation:

Before finding the test statistic, we need to understand the central limit theorem and subtraction of normal variables.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

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.

Group 1: Sample of 35, mean of 1276, standard deviation of 347.

This means that:

\mu_1 = 1276, s_1 = \frac{347}{\sqrt{35}} = 58.6537

Group 2: Sample of 35, mean of 1439, standard deviation of 298.

This means that:

\mu_2 = 1439, s_2 = \frac{298}{\sqrt{35}} = 50.3712

Test if there is a difference in productivity level.

At the null hypothesis, we test that there is no difference, that is, the subtraction is 0. So

H_0: \mu_1 - \mu_2 = 0

At the alternate hypothesis, we test that there is difference, that is, the subtraction is different of 0. So

H_1: \mu_1 - \mu_2 \neq 0

The test statistic is:

z = \frac{X - \mu}{s}

In which X is the sample mean, \mu is the value tested at the null hypothesis and s is the standard error.

0 is tested at the null hypothesis:

This means that \mu = 0

From the two samples:

X = \mu_1 - \mu_2 = 1276 - 1439 = -163

s = \sqrt{s_1^2+s_2^2} = \sqrt{58.6537^2+50.3712^2} = 77.3144

Test statistic:

z = \frac{X - \mu}{s}

z = \frac{-163 - 0}{77.3144}

z = -2.11

The test statistic is z = -2.11.

7 0
3 years ago
How many hours is one quarter of a day?​
Elena-2011 [213]

Answer:

6

Step-by-step explanation:

24/4 is 6, making there be six hours in a quarter of a day

7 0
2 years ago
Other questions:
  • Evaluate A = bh, for b = 8 and h = 4.
    6·2 answers
  • Someone please help me <br><br> The options are : <br> A) 45<br> B) 135<br> C) 120<br> D) 75
    10·2 answers
  • Find the value of k if it is known that the graph of y=kx goes through:
    7·1 answer
  • Find the surface area and volume of the composite figure.
    7·1 answer
  • Which point lies below the x-axis and to the right of the<br>y-axis?​
    5·1 answer
  • what is the first step in finding the consecutive whole numbers between which square root of 845 is located
    15·1 answer
  • (12x+5)°=(17x-5)°<br> Find x=?
    11·1 answer
  • In 2010, 8476 earthquakes
    8·2 answers
  • Imagine you are an architect hired by a newly elected mayor to design a city. What questions might you have for the mayor before
    9·1 answer
  • Given the slope intercept form of the equation identified the slope y=3/4x-3​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!