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2 years ago

12

Evaluate -4w-3z when w= 5.6 and z = -2.9

1 answer:

solmaris [256]2 years ago

4 0

Step by step

Step 1 - -4(5.6)-3(-2.9) {multiply the numbers}. -> -22.4 + 8.7

Step 2 - -22.4 + 8.7 {calculate the sum}
-> -13.7
So the answer is -13.7

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The same number of people live on the islands Beautiful Sunrise and Gorgeous

aev [14]

Using the percentage concept, it is found that 75% of the population of Gorgeous Sunset is on Beautiful Sunrise now.

<h3>What is a percentage?</h3>

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

$P = \frac{a}{b} \times 100\%$

In this problem, we have that:

We consider that the population of both Beautiful Sunrise and Gorgeous Sunset islands is of x.

There is a fiesta at Beautiful Sunrise, and a number a of people from Gorgeous Sunset are coming, hence, there will be x + a people at Beautiful Sunrise and x - a people t Gorgeous Sunset.

The percentage of people from Gorgeous Sunset is on Beautiful Sunrise now is:

$P = \frac{a}{x} \times 100\%$

Now the number of people on Beautiful Sunrise is seven times the number of people on Gorgeous Sunset, hence:

$\frac{x + a}{x - a} = 7$

We can find a <u>as a function of x</u> to find the percentage:

$\frac{x + a}{x - a} = 7$

$7(x - a) = x + a$

$7x - 7a = x + a$

$8a = 6x$

$a = \frac{3x}{4}$

Then, the percentage is:

$P = \frac{a}{x} \times 100\%$

$P = \frac{\frac{3x}{4}}{x} \times 100\%$

$P = \frac{3}{4} \times 100\%$

$P = 75\%$

75% of the population of Gorgeous Sunset is on Beautiful Sunrise now.

You can learn more about the percentage concept at brainly.com/question/10491646

7 0

1 year ago

______________ Angles have each of the pairs of opposite angles made by two intersecting lines *

myrzilka [38]

$\huge \bf༆ Answer ༄$

The Correct choice is B. Vertical

<u>V</u><u>ertical</u> Angles have each of the pairs of opposite angles made by two intersecting lines .

8 0

2 years ago

Read 2 more answers

Jayda takes 3 hours to deliver 189 newspapers on her route. What is the rate per hour at which she delivers the newspapers?

Lesechka [4]

Answer:

63

Step-by-step explanation:

It took 3 hours for her to deliver 189 total.

We need delivery per hour for our answer.

189 / 3 = 63

63 new papers are delivered per hour.

8 0

2 years ago

Read 2 more answers

After 3 weeks, a plant is 8 centimeters tall. After 4 weeks, it has grown to 10 centimeters. Of the plant grows following an ari

Oliga [24]

Answer:

5

Step-by-step explanation:

4 0

3 years ago

Rainbow [258]

Answer:

20x+21y+14

Step-by-step explanation:

Combine like terms:

150x-80y+50-50x-25y+20=

100x-80y+50-25y+20=

100x-105y+50+20=

100x-105y+70

100x-105y+70 can be divided by 5 and get 20x+21y+14.

7 0

2 years ago