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Marrrta [24]
3 years ago
6

The formula for finding the perimeter of equilateral triangle is P=3s. how can you transform the formula so that it could be use

d to determine the length of one side of the triangle when given the perimeter? A. 3P = s
B.P/s = 3
C.Ps = 3
D.P/3 = s
Mathematics
1 answer:
Mandarinka [93]3 years ago
5 0

Your answer is D. Hope this helps -John



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A sample of 20 account balances of a credit company showed an average balance of $1,170 and a standard deviation of $125. You wa
Lady_Fox [76]

Answer:

The P-value for this test is P=0.2415.

Step-by-step explanation:

We have to perform an hypothesis testing on the mean of alla account balances.

The claim is that the mean of all account balances is significantly greater than $1,150.

Then, the null and alternative hypothesis are:

H_0: \mu=1150\\\\H_a: \mu>1150

The sample size is n=20, with a sample mean is 110 and standard deviation is 125.

We can calculate the t-statistic as:

t=\dfrac{\bar x-\mu}{s/\sqrt{n}}=\dfrac{1170-1150}{125/\sqrt{20}}=\dfrac{20}{27.95}=0.7156

The degrees of freedom fot this test are:

df=n-1=20-1=19

For this one-tailed test and 19 degrees of freedom, the P-value is:

P-value=P(t>0.7156)=0.2415

8 0
3 years ago
Last year, Leron worked 8 hours a day,5 days a week, for 50 weeks. He earned $28 per hour. How much dd he earn for the entire ye
pickupchik [31]
28(8) = 224

224(5) = 1,120

1,120(50) = 56,000

Answer: 56,000
5 0
3 years ago
The height of a wooden pole, h, is equal to 20 feet. A taut wire is stretched from a point on the ground to the top of the pole.
kykrilka [37]

ANSWER

D. 25 feet

EXPLANATION

The height of the wall,h, the taut wire and the distance from the base of the pole to the point on the ground, formed a right triangle.

According to the Pythagoras Theorem, the sum of the length of the squares of the two shorter legs equals the square of the hypotenuse.

Let the hypotenuse ( the length of the ) taught wire be,l.

Then

{l}^{2}  =  {h}^{2}  +  {b}^{2}

{l}^{2}  =  {20}^{2}  +  {15}^{2}

{l}^{2}  =  400 + 225

{l}^{2}  =  625

l=  \sqrt{625}  = 25ft

8 0
3 years ago
What is the means-to-MAD ratio of the two data sets, expressed as a decimal?
Ksenya-84 [330]
I think the answer is 1.2
7 0
3 years ago
Write two verbal expressions for b+30.​
IrinaVladis [17]
Can you please please give me more information please thank you
7 0
3 years ago
Read 2 more answers
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