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bogdanovich [222]
4 years ago
9

What is equivalent to (10+7r-r^2)+(-6r^2-18+5r)

Mathematics
2 answers:
mote1985 [20]4 years ago
6 0

Answer:

-7r^2+12r-8

Step-by-step explanation:

tensa zangetsu [6.8K]4 years ago
4 0

Answer:

- 7r² + 12r - 8

Step-by-step explanation:

Given

(10 + 7r - r² ) + (- 6r² - 18 + 5r) ← remove parenthesis

= 10 + 7r - r² - 6r² - 18 + 5r ← collect like terms

= - 7r² + 12r - 8

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0.4(5x – 12) + 0.5x = 15.2
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Square root of four
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The square root of 4 is 2 because 2•2 is 4
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Which expression is eqivalent to 9a +12
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3(3a + 4)

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6. Mr. Bernard travels 5.12 km per hour on his bike. How far can he travel in 3.25 hours?
Whitepunk [10]

Answer:

6. C. 16.64 km

7. B. P 216.00

8. B. P 565 425

9. C. 0.27

10. D. 24.6875

11. B. 3 kg

12. B. ratio

13. A. Proportion

14. D. 6:10

15. B. 2:3

Step-by-step explanation:

6. Mr. Bernard travels 5.12 km per hour on his bike. How far can he travel in 3.25 hours?

Speed = 5.12km/hr

Time = 3.25 hr

To find the distance;

Distance = speed * time

Distance = 5.12 * 3.25

Distance = 16.64 km

7. Mrs. Allysa purchased 48 pencils at P 4.50 each. How much did she pay for all the pencils?

Quantity = 48 pencils

Cost price = P 4.50

To find the total selling price;

Total = quantity * cost price

Total = 48 * 4.50

Total = P 216

8. The Villaroel family bought a 125.65 square meter lot at P 4500.00 per square meter. How much did they

pay?

Quantity = 125.65 m²

Cost price = P 4500

Total price = 125.65 * 4500

Total price = P 565425

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11. A store owner has 63 kilograms of candy. If she puts the candy into 21 jars, how much candy will each jar

contain?

Mass = 63 kg

Amount = 21 jars

Each jar = 63/21 = 3 kg

12. Ratio: It is the quantitative relation between two amounts showing the number of times one value contains or is contained within the other.

13. Proportion: It is a statement that two ratios are equal.

14. What ratio is equal to 3:5?

We would multiply both ratio by 2

3:5 * 2 = 6:10

15. What ratio is proportional to 4:6?

We would divide both ratio by 2

4:6 / 2 = 2:3

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3 years ago
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