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3 years ago

A rectangle is 9 centimeters long and 5 centimeters wide. What is the diameter?

Mathematics

1 answer:

Illusion [34]3 years ago

3 0

Answer:

A rectangle doesn't has a diameter

________________________________

But if you are asking about perimeter.

Step-by-step explanation:

Perimeter = 2(l + b)

l = 9cm

b = 5cm

Perimeter = 2(l + b)

= 2(9 + 5)

= 18 + 10

= 28cm

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2 years ago

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avanturin [10]

Answer: 90% confidence interval would be (66.92,69.08).

Step-by-step explanation:

Since we have given that

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Mean = 68 days

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We need to find the 90% confidence interval.

So, z= 1.645

So, intervals would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=68\pm 1.645\times \dfrac{3.9}{\sqrt{35}}\\\\=68\pm 1.08\\\\=(68-1.08,68+1.08)\\\\=(66.92,69.08)$

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4 years ago

Simplify.

Igoryamba

Answer:

$8^{18}$

Step-by-step explanation:

Using the rule of exponents

$a^{m}$ ÷ $a^{n}$ = $a^{(m-n)}$ , then

$8^{15}$ ÷ $8^{-3}$

= $8^{(15-(-3))}$

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2 years ago

Does anyone know the answer?

Usimov [2.4K]

I believe it is 45. I am 50% sure so if you get it wrong... don't blame me.

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3 years ago