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3 years ago

What’s the correct answer for this question?

Mathematics

1 answer:

Serggg [28]3 years ago

8 0

Answer:

Step-by-step explanation:

A dilation means that the initial value is being <u>multiplied</u> by the value of the scale factor.

Therefore, to solve this, you would proceed with:

10× $\frac{4}{5}$ = 8.

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The expression to find the perimeter of a rectangle is 2(length + width). What is the perimeter, in units, of a rectangle of len

ch4aika [34]

Length: 1/5 = 2/10
Width: 1/2 = 5/10

Perimeter = 2 (Length + Width)
= 2 (2/10 + 5/10)
= 2 ( 7/10)
= 14/10
= 1 and 4/10 = A. 1 and 2/5

6 0

2 years ago

Read 2 more answers

6 cars are racing. In how many ways can first, second and third places be awarded?

sammy [17]

Answer:

18ways

Step-by-step explanation:

5 0

3 years ago

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the density of pure gold 1,204 pounds per cubic foot? how many cubic feet is 481.6lbs of pure gold?

Nadusha1986 [10]

Answer:

Volume of Gold = 0.4 cubic feet.

Step-by-step explanation:

First we have to make sure the units are same as the units the answer is required in.

Answer should be given in cubic feet.

Density is given in pounds per cubic foot. And Mass is given in pounds. So units are in order. Therefore, we can go ahead with the calculation.

The Density of Gold = [Mass of Gold/Volume of Gold]

By substituting values,

$1204$ ponds per cubic foot = [ $481.6$ pounds / Volume of gold]

Making Volume of God the subject of the equation,

Volume of Gold = [ $481.6$ pounds / tex]1204[/tex] ponds per cubic foot ]

Volume of Gold = 0.4 cubic feet.

5 0

3 years ago

4(c + d) -3c + 5d when c=1.5 and d= -6.2

patriot [66]

Answer:

-54.3

Step-by-step explanation:

4(1.5−6.2)−4.5−31

=(4)(−4.7)−4.5−31

=−18.8−4.5−31

=−23.3−31

=−54.3

7 0

2 years ago

Each year, all final year students take a mathematics exam. It is hypothesized that the population mean score for this test is 8

drek231 [11]

Answer:

95% Confidence interval: (96.06,103.94)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 85

Sample mean, $\bar{x}$ = 100

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 11

95% Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$100 \pm 1.96(\frac{11}{\sqrt{30}} ) = 100 \pm 3.94= (96.06,103.94)$

(96.06,103.94) is the 95% confidence interval for the population mean test score.

8 0

2 years ago