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3 years ago

Please hurry and help me

Mathematics

2 answers:

Sergeu [11.5K]3 years ago

7 0

Answer:

ok the first on is 643

Step-by-step explanation:

saw5 [17]3 years ago

4 0

The domain is 1,3,5-3 and the range is -2,-14,2

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Solve for r. 7(r + 1) = 20.3

docker41 [41]

Answer:

r = 1.9

Step-by-step explanation:

7r + 7 = 20.3

- 7 - 7

7r = 13.3

divide by 7

r = 1.9

4 0

3 years ago

Read 2 more answers

What numbers add to 10 and multiply to negative 144?

Ilya [14]

The answers would be -8 and 18

-8×18 = -144
-8+18 = 18-8 = 10

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4 years ago

Evaluate the expression. Use y = -6. y? – 4y + 8

Umnica [9.8K]

Answer:

-6-4(-6)+8

-6+24+8

-6+32

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3 years ago

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Sarah had 25 candies. Sarah gave 25 of the candies to her sister. Of the amount left, she gave 2/3 to her friend. How many candi

RoseWind [281]

Answer:

She has 5 candles left.

Step-by-step explanation:

Total of candy Sarah has = 25candies

If Sarah gave 2/5 of the candies to her sister, the total amount she gave her sister will be 2/5 of 25

2/5 of 25 = 10

The remaining candy left will be 25-10 which is 15.

If she gave 2/3 of the amount left to her friend, the amount she gave her friend will be 2/3×15 = 10candies.

5 0

3 years ago

The area of Europe is approximately 9.94 × 106 square kilometers. Its population is approximately 7.31 × 108 people. What is the

Kipish [7]

The population density is 73.54 people per square kilometer

Solution:

Given that,

Area of europe = $9.94 \times 10^6$ square kilometers

Population = $7.31 \times 10^8$

To find: population density

The formula for population density is given as:

$\text{ population density } = \frac{\text{ number of people }}{\text{ land area }}$

Substituting the values in formula, we get

$\text{Population density } = \frac{7.31 \times 10^8}{9.94 \times 10^6}\\\\\text{ use the law of exponent } \frac{a^m}{a^n} = a^{m-n}\\\\\text{Population density } = 0.7354 \times 10^{8-6}\\\\\text{Population density } = 0.7354 \times 10^2\\\\\text{Population density } = 73.541$

On rounding to nearest hundreth (two decimal places ), we get 73.54

Thus the population density is 73.54 people per square kilometer

3 0

3 years ago