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2 years ago

13

a rectangular rug covers 1200 square inches on the floor. The length of the rug is 30 inches .What is the length in inches of th

e rug

1 answer:

Crank2 years ago

8 0

Answer:

The length is 30 (which you aready said) and the width is 40

Step-by-step explanation:

1200/30=40

(another way)

120/30=4 (multiply each side by ten)

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If f(4) = 5, find f ^-1 (5).

Levart [38]

Answer:

4

Step-by-step explanation:

The relation defined by f includes (4, 5). Then the inverse relation will include (5, 4).

$f^{-1}(5)=4$

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3 years ago

the letter "T" makes up an estimated 8% of a certain language. Assume this still correct. A random sample of 1000 letters is tak

rusak2 [61]

Answer:

0.242

Step-by-step explanation:

p = 0.08, q = 1 − p = 0.92, and n = 1000.

The mean and standard deviation are:

μ = p = 0.08

σ = √(pq/n) = 0.00858

The z score is:

z = (x − μ) / σ = -0.70

Using a calculator or z score table, the probability is:

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2 years ago

What is the answer too -6/7 x 3/8

IrinaK [193]

Answer:

-9/28

Step-by-step explanation:

<u>Step 1: Solve</u>

-6/7 * 3/8

-18/56

-18/2 / 56/2

<em>-9/28</em>

<em />

Answer: -9/28

6 0

3 years ago

The function A=A_oe^{-0.01155x} A = A o e − 0.01155 x models the amount in pounds of a particular radioactive material stored in

vivado [14]

They are essentially asking us to solve:

$357=900e^{-0.01155x} \implies\\ \frac{357}{900}=e^{-0.01155x} \implies\\ \ln{\frac{357}{900}}=-0.01155x \implies \\ x\approx 80.1$

Solving this equation for x tells us that it will take around 80.1 years for the materials in the vault to reduce to 357 pounds.

4 0

2 years ago

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Jeremy wants to give a 20% gratuity to his cab driver. His fare is $35.50. What is the total amount he will pay the driver?

Mandarinka [93]

Answer: $42.60

Step-by-step explanation:The 20% of $35.50 is $7.10. Then, you add $7.10 to $35.50, that will be $42.60.

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2 years ago

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