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Nataly [62]
3 years ago
9

Factor completely: 3a2 − 14a − 24

Mathematics
2 answers:
GalinKa [24]3 years ago
7 0
I know what it is. it  is (3a+4)(a-6)
Lostsunrise [7]3 years ago
4 0

Answer:

The correct option is (3a+4)(a-6)

Step-by-step explanation:

We have the polynomial 3a^2-14a-24

For the polynomials of the form ax^2+bx+c we have to rewrite the middle term as a sum of two terms whose product is, in this case, a.c=-72 and whose sum is b=(-14)

We have to factorize -14 from -14a:

3a^2-14(a)-24=\\3a^2-(18-4)(a)-24=\\=3a^2-18a+4a-24

Because b=(-18)+4=(-14) and a.c=(-18).4=(-72)

Now we have to factor by grouping:

3a^2-18a+4a-24=\\(3a^2-18a)+(4a-24)=\\3a(a-6)+4(a-6)=\\=(3a+4)(a-6)

Then, the correct option is (3a+4)(a-6)

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its 10x the value.

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3 years ago
13 people fit comfortably in a 5 foot by 5 foot area. Use this value to estimate the size of a crowd that is 5 feet deep on one
dangina [55]

Answer:

There are 203069 people in the crowd

Step-by-step explanation:

The first step in solving this problem is to ensure that we are working with the same units throughout the solution process. To do this, we will have to convert 4 miles to feet. (<em>This is because every other unit is in feet).</em>

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The next step is to calculate the area that the entire parade is occupying. This can be done by multiplying the length of the parade by the breadth. In this case, it will be 21120ft X 5 ft = 105600 square feet.

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8 0
4 years ago
Find the missing dimension of the cone. Round your answer to the nearest tenth. Volume = 3.6 in.³ An ice cream cone is shown. It
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Answer:

0.905 in

Step-by-step explanation:

Parameters given:

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Height of cone, h = 4.2 in

Although the diagram is not shown, this problem can be solved.

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We can find r.

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