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3 years ago

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A square swimming pool has a cement sidewalk around it. The sidewalk is the same width all the way around. The outside perimeter

of the sidewalk is 80 feet. What is the width of the sidewalk if the area of the pool is 225 square feet?

1 answer:

forsale [732]3 years ago

7 0

I’m pretty sure u just have to subtract 225-80

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Need help ASAP please

inysia [295]

Answer:

m=1

Step-by-step explanation:

y2-y1/x2-x1

3 0

3 years ago

10x - (5+3x)<br> To short LOL

never [62]

10x - (5+3x)
10x - 8x
10x - 8
18x

5 0

3 years ago

Read 2 more answers

Harry has three vehicles (bicycle,scooter, and car). He uses them to go to school, the garden, and the theatre. If he is out of

tamaranim1 [39]

He could be using either his bicycle, scooter, and the car. He could also be at either the school, garden or theatre. There are 3 possible methods of his transportation and places he could be. So Your Answer is 3.

7 0

3 years ago

You would like to know whether forwards in a basketball league average the same (or different) numbers of points than the overal

Akimi4 [234]

Answer:

The critical t-value for such a test given an alpha level of 0.05 is 2.26

Step-by-step explanation:

Null hypothesis : $H_0:\mu = 7.5$

Alternate hypothesis : $H_a:\mu \neq 7.5$

Population mean = $\mu = 7.5$

Data : 10, 9, 6, 11, 13, 14, 9, 9, 9, and 10

Mean = $\bar{x}=\frac{\text{Sum of all observations}}{\text{no. of observations}}$

Mean = $\frac{10+9+6+11+13+14+9+9+ 9+ 10}{10}$

Mean =10

Standard deviation : $\sqrt{\frac{\sum(x-\bar{x})^2}{n}}$

Standard deviation : $\sqrt{\frac{(10-10)^2+(9-10)^2+(6-10)^2+(11-10)^2+(13-10)^2+(14-10)^2+(9-10)^2+(9-10)^2+(9-10)^2+(10-10)^2}{10}}$

Standard deviation s :2.144

$t = \frac{x-\mu}{\frac{s}{\sqrt{n}}}t = \frac{10-7.5}{\frac{2.144}{\sqrt{10}}}t=3.687$

Df = n-1 = 10-1 = 9

T critical = $t_{(df,\alpha)}=t_(9,0.05)=2.26$

T calculated > T critical

So, We failed to accept null hypothesis

Hence the critical t-value for such a test given an alpha level of 0.05 is 2.26

5 0

3 years ago

The amount of a person’s paycheck p varies directly with the number of hours worked t. For 10 hours of work, the paycheck is $57

My name is Ann [436]

Step-by-step explanation:

The variation is direct, i.e. more the time of work, more the amount.

For 10 hours, the paycheck is $57.50,

so for 1 hour, the paycheck is $57.50 ÷ 10, or $5.75.

This means that for t hours of work, the value of the paycheck will be $5.75 × t.

So for the equation, assuming that p is the paycheck value (in dollars) and t is the number of hours,

p = 5.75 × t

Please mark Brainliest if this helps!

8 0

3 years ago