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2 years ago

Find the sum of 7a³ + 14a + 12 and -6a³ + 12a² -7

Mathematics

1 answer:

maw [93]2 years ago

7 0

Answer: $a^3+12a^2+14a+5$

Step-by-step explanation:

$7a^3+14a+12+(-6a^3+12a^2-7)$

$7a^3+14a+12-6a^3+12a^2-7\\a^3+12a^2+14a+5$

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A video game that normally sells for $80 is on sale for $68. What is the percent of discount for the sale price?

Snezhnost [94]

Answer:

Step-by-step explanation:

68 - 80 / 80

= - 12 / 80

= - 3 / 20

= - 15%

4 0

2 years ago

Alberto ran a race at a speed of 9 meters per second. Omar had a 6 meter head start and ran at a speed of 7 meters per second. B

zloy xaker [14]

Answer: Alberto run 27 meters.

Time taken By Alberto=3 seconds

Step-by-step explanation:

Let d be the distance Alberto ran to catch Omar.

Then, distance ran by Omar=x-6

Also, $\text{Time}=\frac{\text{Distance}}{\text{Speed}}$

Since, both started running at the same time.

Time taken By Alberto= $\frac{x}{9}$

Time taken By Omar= $\frac{x-6}{7}$

Now, at the point they meet time taken by both is equal.

$\frac{x}{9}=\frac{x-6}{7}\\\Rightarrow\ 7x=9(x-6)\\\Rightarrow7x=9x-54\\\Rightarrow9x-7x=54\\\Rightarrow\ 2x=54\\\Rightarrow\ x=27$

Hence, Alberto run 27 meters.

Time taken By Alberto= $\frac{27}{9}$ =3 seconds

6 0

3 years ago

Fofino [41]

Answer:

They got the same answer

Step-by-step explanation:

A slope is completely linear, and the rate of change is constant, so no matter what points are chosen, the rate of change will be the same.

5 0

2 years ago

Please Help Will Give Points

kodGreya [7K]

Answer:

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

A farm lets you pick 3 pints of raspberries for $12.00.

grandymaker [24]

Answer:

1. $4

2. 1/4 or .25 pints

3. 5 pints

4. $32

Step-by-step explanation:

1. $12/3= $4

2. 1/$4= 1/4 or .25 of a pint

3. $20/$4 = 5 pints

$. 8x$4 = $32

8 0

1 year ago

Read 2 more answers