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Alex787 [66]
3 years ago
11

You are building a rectangular dog pen with an area of 90ft^2. You want the length to be 3 ft longer that twice it's width. What

equation would you use to find the width of the pen?
Mathematics
1 answer:
Alecsey [184]3 years ago
8 0
I think the answers is the you think is if you think okayω
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Solve x/10 = -7 A. x = 3 B. x = -0.7 C. x = -17 D. x = -70
timofeeve [1]

Answer:

x = -70

Step-by-step explanation:

x/10 = -7

Multiply each side by 10

x/10*10 = -7*10

x = -70

7 0
3 years ago
Wendy and Joyce had the same amount of money. Wendy spent $960 while Joyce spent $2,500. In the end, Wendy had 3 times as much m
julia-pushkina [17]
Each of them started with $4620 at first
7 0
3 years ago
Jeffrey currently has an account balance of $1,565.00. His initial deposit on the account was $625 and it earned 4.7% simple int
hram777 [196]
A = P(1 + rt)

1565 = 625(1 + (0.047)(t))

2.504 = 1 + 0.047t

1.504 = 0.047t

t = 32

I hope this is correct! (Sorry I haven't done simple interest in a while.)
3 0
3 years ago
Given a mean of 150 and a standard deviation of 25 Define the interval about the mean that contains 95% of the data.
ohaa [14]
By normal curve symmetry 

<span>from normal table </span>
<span>we have z = 1.15 , z = -1.15 </span>

<span>z = (x - mean) / sigma </span>
<span>1.15 = (x - 150) / 25 </span>
<span>x = 178.75 </span>


<span>z = (x - mean) / sigma </span>
<span>-1.15 = (x - 150) / 25 </span>
<span>x = 121.25 </span>

<span>interval is (121.25 , 178.75) </span>

<span>Pr((121.25-150)/25 < x < (178.75-150)/25) </span>
<span>is about 75%</span>
7 0
3 years ago
There is a rectangular prism that can fit 28 cubes with edge lengths of 1/2 inch each. What is the volume of this rectangular pr
siniylev [52]

Answer:

3.5 inch^3

Step-by-step explanation:

Volume of cube: V = s^2,

where V = volume, and s = length of side or edge.

The volume of the prism is the same as the volume of 28 cubes with edge length of 1/2 inch. To find the volume of the prism, find the volume of one cube and multiply by 28.

volume of prism = 28 * volume of cube

volume of prism = 28 * (1/2 inch)^3

volume of prism = 28 * 1/8 inch^3

volume of prism = 3.5 inch^3

3 0
3 years ago
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