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3 years ago

Which equation could be used to find the perimeter of a rectangle that has a width of 12 cm and a length of 16 cm?

1 answer:

3 0

It would be a. because a rectangle has 2 pairs of congruent sides so since the width is 12 and there are 2 sides with that measurement it would be 2(12) and the same goes for the length, and then you add them together.

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What fraction and decimal forms match the long division problems? <br> plz help its for a test!

Gnom [1K]

Your answer would be D to double check out into a calculator 2 divided by 15 and it’s the same answer

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3 years ago

A new, trendy department store is experiencing exponential growth across America. The chain began in 2004 when it opened 16 stor

QveST [7]

The equation is y=16(1.35)ˣ.

This equation is of the form y=a(1+r)ˣ, where a is the initial amount, r is the rate of growth expressed as a decimal number, y is the total, and x is the amount of time. For our problem, a is 16; b is 0.35 (35%=35/100=0.35). This gives us the equation above.

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3 years ago

The length of the side of a square is 2x + 3y. Find the area of the square in terms of x and y

Angelina_Jolie [31]

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3 years ago

One ticket costs $15.45. Three tickets would cost?

Troyanec [42]

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2 years ago

Two distinct solid fuel propellants, type A and type B, are being considered for a space program activity. Burning rates of the

Finger [1]

Answer:

C.I. = (2.297, 11.703)

Step-by-step explanation:

The t-statistic for difference of mean is given by,

$t=\frac{\bar{x_{1}}-\bar{x_{2}}}{\sqrt{\frac{s_{1}^{2}}{n_{1}}+\frac{s_{2}^{2}}{n_{2}}}}$

Here, $\bar{x_{1}}$ = 84

$\bar{x_{2}}$ = 7

s₁ = 4

n₁ = 12

s₂ = 6

n₂ = 18

Substituting all value in formula,

We get, t = -3.541 at 28 degree of freedom.

Using this formula, we get, t = 1.5342

Therefore, based on the data provided, the 99% confidence interval for the difference between the population means $\bar{x_{1}}-\bar{x_{2}}$ is: 2.297 < $\bar{x_{1}}-\bar{x_{2}}$ < 11.703

which indicates that we are 99% confident that the true difference between population means is contained by the interval (2.297, 11.703)

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3 years ago