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yawa3891 [41]
4 years ago
11

Which of the following is the correct factorization of the trinomial below?

Mathematics
2 answers:
Sergeeva-Olga [200]4 years ago
5 0
D: Is the correct Answer
sweet-ann [11.9K]4 years ago
4 0

Answer:

-1(7x+12)(x+1)

Step-by-step explanation:

1) Find out which two integer numbers whose product result in -84 and whose sum is -5?

-7x² +5x +12= 0

Product ( )*( )= -84

And Sum ( )+( )= 5

12 * -7 = -84 and 12 +(-7) = 5

2) We now can rewrite the above trinomial as

-7x²+12x-7x-12=0

3) Group them, highlight the MCD and rewrite it as a product.

x(7x+12) -1(7x-12)=0  Maximum Common Divider in evidence

x(7x+12) -1(7x-12)=0 Common Factor in bold multiplied by -1

-1(7x-12)(x+1) The Second term was divided by -1

-1(7x+12)(x+1)=0

4) Test it, to check your work

-1(7x+12)(x+1)

-1[7x²-5x-12]

-7x²+5x+12

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Pls help due ASAP <br> Show workings please!!!
Vlad [161]

Answer:

AB=8

Step-by-step explanation:

First, you get figure out x. Since both sides are equal, use the equation x+3=2x-2, then subtract x from both sides, 3=x-2, and then add 2 to both sides, x=5. Then use one of the equations to get the length of the side, I used x+3=8, which is your answer.

(hope this helps :P)

5 0
3 years ago
What is the perimeter of a rectangle with a length of 6cm and a width of<br> 5cm?
Nataliya [291]

Answer:

perimeter = 22 cm

Step-by-step explanation:

perimeter = 2(L + W) = 2(6 + 5) = 22 cm

8 0
3 years ago
Read 2 more answers
Your family has a circular swimming pool. The radius of the pool is 9 feet and and its depth is 4 feet. What is the volume of th
-Dominant- [34]

Given

Your family has a circular swimming pool.

The radius of the pool is 9 feet and and its depth is 4 feet.

Find out the volume of the pool.

To proof

As depth is given in the question that means the shape of the  swimming pool

is cylinder.

Formula

Volume\ of\ cylinder = \pi r^{2}h

where r = radius

h = height

now

radius of the pool is 9 feet and and its depth is 4 feet.

put all the values in the above equation

we get

= \pi\times 9^{2}\times 4

use 3.14 to approximate pi

= 3.14\times 9\times9\times4

we get

= 1017.4 ( approx )feet²

Hence proved

7 0
3 years ago
Read 2 more answers
Are these rational numbers
Sav [38]
Yes and second no it is not
8 0
3 years ago
Marisol rode her bicycle each day for five days. estimate how far she biked in all. round each number to the nearest whole numbe
o-na [289]

Marisol biked a total of 71 miles. On the other hand, she biked about 10 more miles on Wednesday than on Thursday.

<h3>How to round numbers?</h3>

The general rule is to move the decimal number to its nearest tenth. For example, 5.6 should be rounded as 6 but 5.1 should be rounded as 5.

Now, let's round the distance covered by Marisol each day:

  • Monday: 12.3 = 12
  • Tuesday: 14.1 = 14
  • Wednesday: 17.7= 18
  • Thursday: 11.8 = 12
  • Friday: 15.2 = 15

<h3>What distance did Marisol covered?</h3>

To know this just add the distance every day:

  • 12 + 14 +18 + 12 + 15 = 71 miles

<h3>How much more did she bike on Wednesday than on Thursday?</h3>

Distance covered on Wednesday - distance covered on Thursday

  • 18 - 12 = 6 miles

Note: This question is incomplete; here is the missing information:

  • Monday 12.3
  • Tuesday 14.1
  • Wednesday 17.7
  • Thursday 11.8
  • Friday 15.2

Learn more about addition in: brainly.com/question/17407789

#SPJ4

8 0
1 year ago
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