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Morgarella [4.7K]
3 years ago
11

Mrs.drew want to build a square sandbox with an area of 361 square feet what is the total length of wood mrs. Drew needs to make

the slide of the sandbox
Mathematics
1 answer:
Taya2010 [7]3 years ago
4 0

Answer:

180.5 ft

Step-by-step explanation:

the area for the sand box would be calculated as length × width. since the sandbox is square each side is the same length. the side will be half the number of the area.

361 ÷ 2 = 180.5 ft

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Simplify. -10m+2m^4-13m-20m^4
Ulleksa [173]
First one:

you can add -10m and -13m but you can't add -10m and 2m^4 becuase the powers aren't the same so

when adding the like terms
look at the:
powers, (x^3 adds with x^3)
placehloder letter (x adds with x and y adds with y and so on)

-10m+2m^4-13m-20m^4
powers: m^1 and M^4
placeholders: all m


add
-10m-13m+2m^4-20m^4
-23m-18m^4




second one:
when multiplying exponents, you add with like
so if you multipliy
x^2yz^3 times x^4y^2z^2 thne you would get x^6y^3z^5
when multiply with coeficients
2x^2yz^3 times 4x^4y^2z^2=8x^6y^3z^5
so using associative property a(bc)=(ab)c
2/3 times p^4 times y^3 times y^4 times s^5 times 6 times p^2 times s^3
group like terms

(2/3 times 6) times (p^4 times p^2) times (y^3 times y^4) times (s^5 times s^3)
(4) times (p^6) times (y^7) times (s^8)
4p^6y^7s^8

8 0
3 years ago
Assume that a sample is used to estimate a population proportion μ . Find the margin of error M.E. that corresponds to a sample
hichkok12 [17]

Answer:

MoE = 1.645\cdot \frac{13.1}{\sqrt{772} } \\\\MoE = 1.645\cdot 0.47147\\\\MoE = 0.776\\\\

Step-by-step explanation:

Since the sample size is quite large, we can use the z-distribution.

The margin of error is  given by

$ MoE = z_{\alpha/2}(\frac{s}{\sqrt{n} } ) $

Where n is the sample size, s is the sample standard deviation and z_{\alpha/2} is the z-score corresponding to a 90% confidence level.

The z-score corresponding to a 90% confidence level is

Significance level = α = 1 - 0.90= 0.10/2 = 0.05

From the z-table at α = 0.05

z-score = 1.645

MoE = 1.645\cdot \frac{13.1}{\sqrt{772} } \\\\MoE = 1.645\cdot 0.47147\\\\MoE = 0.776\\\\

Therefore, the margin of error is 0.776.

3 0
3 years ago
Please help me..stuck on problem.
Dvinal [7]
7a
TSA = 2lw<span> + 2</span>lh<span> + 2</span><span>wh 
TSA = 140 + 70 + 100 = 310 ft^2

7b

310 x $4 =$1240
cost = </span>$1240

7c

V= wlh = <span>7×10×5 = </span><span>350 ft^3</span>

4 0
3 years ago
Simone paid $13 for an initial year's subscription to a magazine. The renewal rate is $8 per year. This situation can be represe
elixir [45]

Data Input

Simone paid $13 for an initial year's

The renewal rate is $8 per year

Equation

y = 8x + 13

Table

x (number of years renewed) | (total cost in dollars)

0 -> 13 dollars

1 -> 21 dollars

2 -> 29 dollars

3 -> 37 dollars

4 -> 45 dollars

7 0
1 year ago
What is the mode median and mean
stellarik [79]
The mode is 17 because it occurs most often.

There are 23 data points, so the 12th one is the median (middle). The median is 15.

The mean is 15.435 because it is the average. Add up all the ages, then divide by the number of people.



8 0
3 years ago
Read 2 more answers
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