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Tanya [424]
3 years ago
5

What is the product of a+3 and −2a2+15a+6b2?

Mathematics
2 answers:
Lady bird [3.3K]3 years ago
7 0

Answer:

c. 2a3+9a2+45a+6ab2+18b2

Step-by-step explanation:

(a+3) + (−2a2+15a+6b2)

Using distributed p. with and a and 3

a(−2a2) + a(15a) +a(6b2)        and       3(−2a2) + 3(15a) + 3(6b2)

= -−2a3 + 15a2 + 6ab2                          = -6a2 + 45a + 18b2

Now add like terms and put in standard form.

15a2+(-6a2) = 9a2  

And equals

-2a3 + 9a2+45a+6ab2+18b2

Trust me I took the test and got 100%

Your welcome,

bulgar [2K]3 years ago
4 0

Answer:

C

Step-by-step explanation:

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A car factory can produce 362 cars every 8 hours. How many cars could the factory produce in 44 hours?
Leto [7]

Answer:

1991

Step-by-step explanation:

I divided 44 by 8 to how many times 362 cars would be made. I got 5.5 and then multiplied that by 362 to see that 1991 cars will be produced.

5 0
3 years ago
Read 2 more answers
The 7 in 72 represents how many times the value of the 7 in 78 is what ?
earnstyle [38]

Answer:

One time

Step-by-step explanation:

In both the numbers 72 and 78, the place value of 7 is 70.

Hence, 7 in 72 represents one time the value of the 7 in 78.

7 0
3 years ago
What is the value of x in the equation 7x + 2y = 48 , when y = 3?
9966 [12]
<span>7x + 2y = 48
</span><span>7x + 2(3) = 48
7x + 6 = 48
7x = 42
 x = 6

answer </span><span>when y = 3,  x  = 6</span>
7 0
4 years ago
How can I get the answer
marshall27 [118]

Answer:

A.

Step-by-step explanation:

To find the inverse of a function, first make f(x) a y

So,

y = \frac{12}{x} -18

Then switch the x and the y

x = \frac{12}{y} - 18

Solve, for y

7 0
3 years ago
Please explain your answer as well. THX!!
telo118 [61]

Answer:

The correct option is the first one.

Step-by-step explanation:

We know that 14 men and 24 women applied for a job. So a total of 38 persons applied for that job.

But there are 4 ways a man can be chosen. It can be the first person chosen, the second, the third of the fourth one.

So we know that the number of ways that four people can be selected out of 38 people is  38C4=73,815.

Also the number of ways 3 woman can be selected is 14*24C3 =14*2024 = 28,336.

Then, the probability of randomly selecting a group with 3 women is 28,336/73,815=0.3838

The correct option is the first one.

8 0
4 years ago
Read 2 more answers
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