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mihalych1998 [28]

2 years ago

10

the area of a certain rectangle is 288 square yards the perimeter is 68 yards if you double the length and width what will be th

e area and perimeter of the new rectangle

1 answer:

Ivenika [448]2 years ago

7 0

Answer:576 by 136

Step-by-step explanation:

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Answer:5 * (1/2 * 6 * 14)= x

Step-by-step explanation: :D

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2 years ago

Please help me,ASAP

pav-90 [236]

Answer:

b. They can both be 90 degree angles

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Step-by-step explanation:

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vivado [14]

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14.82

Step-by-step explanation:

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2 years ago

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2 years ago

g A test was conducted to determine if there is a difference between Canadian and American average heart rates. A group of 36 Ca

melisa1 [442]

Answer:

The test statistic | t | =4.45

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the first sample size n₁ = 36

Given that the second sample size n₂ = 34

Mean of the first sample x₁⁻ = 68.5

Mean of the second sample x₂⁻ = 70

<u><em>Step(ii):-</em></u>

Test statistic

$t = \frac{x^{-} _{1}-x^{-} _{2} }{\sqrt{S^{2} (\frac{1}{n_{1} }+\frac{1}{n_{2} } } )}$

$t = \frac{68.5-70}{\sqrt{2(\frac{1}{36}+\frac{1}{34} ) } }$

$t = \frac{-1.5}{0.337} = -4.45$

The test statistic | t | = |-4.45| =4.45

6 0

2 years ago