All categories

4 years ago

Choose the correct simplification of the expression −3x2(5x − 4x2 − 6).

2 answers:

8 0

Answer B.
$- 3 {x}^{2} (5x - 4 {x}^{2} - 6) \\ = - 15 {x}^{3} + 12 {x}^{4} + 18 {x}^{2} \\ = 12 {x}^{4} - 15 {x}^{3} + 18 {x}^{2}$

dexar [7]4 years ago

5 0

Answer:

The answer is B

Step-by-step explanation:

(−3x2)(5x−4x2−6)

=(−3x2)(5x+−4x2+−6)

=(−3x2)(5x)+(−3x2)(−4x2)+(−3x2)(−6)

=−15x3+12x4+18x2

=12x4−15x3+18x2

You might be interested in

A group of people were asked if Marilyn Monroe had an affair with JFK. 184 responded "yes", and 387 responded "no". Find the pro

agasfer [191]

Answer:

0.6778 to 4 dec. places.

Step-by-step explanation:

That is 387 / (184+387)

= 387 / 571

= 0.677758

6 0

4 years ago

A: {71,73,79,83,87} B:{57,59,61,67}

Jobisdone [24]

Answer:

$\frac{3}{5}$ .

Step-by-step explanation:

We have been given two sets as A: {71,73,79,83,87} B:{57,59,61,67}. We are asked to find the probability that both numbers are prime, if one number is selected at random from set A, and one number is selected at random from set B.

We can see that in set A, there is only one non-prime number that is 87 as it is divisible by 3.

So there are 4 prime number in set A and total numbers are 5.

$P(\text{Prime number from A})=\frac{4}{5}$

We can see that in set B, there is only one non-prime number that is 57 as it is divisible by 3.

So there are 3 prime number in set B and total numbers are 4.

$P(\text{Prime number from B})=\frac{3}{4}$

Now, we will multiply both probabilities to find the probability that both numbers are prime. We are multiplying probabilities because both events are independent.

$P(\text{Prime number from A and B})=\frac{4}{5}\times \frac{3}{4}$

$P(\text{Prime number from A and B})=\frac{1}{5}\times \frac{3}{1}$

$P(\text{Prime number from A and B})=\frac{3}{5}$

Therefore, the probability that both numbers are prime would be $\frac{3}{5}$ .

4 0

3 years ago

Julio's father is 4 times as old as Julio. The sum of their ages is no less than 55.

Delvig [45]

11? Because, 4 times 11 is 44, plus 11 is 54. 12 would be too much.

7 0

3 years ago

Read 2 more answers

In the figure below, segment AC is congruent to segment AB.

prisoha [69]

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

Based on the attached image above, I think the answer should be "<span>Angle DAC is congruent to angle DAB."</span>

6 0

3 years ago

I dont understand pls help me

ryzh [129]

Answer:

the answer is the option B 35

Step-by-step explanation:

first, add 4 and 3. you will get 7. Next, multiply 7 by 5 and you will get the answer :35

$5(3 + 4) \\ 5(7) \\ 35$

4 0

3 years ago

Read 2 more answers