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Fofino [41]
3 years ago
14

7-3 Multiplying Binomials

Mathematics
1 answer:
Nataly [62]3 years ago
7 0

Answer:

Step-by-step explanation:

Use FOIL method.First multiply (5x + 1) and (3x - 4). Then multiply (15x² - 17x - 4) by (x +2)

Volume of the rectangular prism = length *width * height

              = (5x + 1) (3x -4)(x +2)

              = [ 5x*3x + 5x*(-4)  + 1*3x + 1*(-4) ] (x + 2)

             = [15x² <u>- 20x + 3x</u> - 4] (x +2)    {Combine like terms}

             = [15x² - 17x - 4] (x + 2)

             =[15x² -17x - 4]*(x) + [15x² - 17x  -4]*2

            = [15x²*x - 17x*x - 4*x ]+ 15x²*2 - 17x *2  - 4*2

            = 15x³ - 17x² - 4x  + 30x² - 34x - 8

           = 15x³ <u>- 17x² + 30x²</u>  <u>- 4x - 34x </u>- 8    {Combine like terms}

           = 15x³ + 13x²  - 38x - 8

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Solve this equation: 8(3x - 6) = 6(4x + 8)
Ksivusya [100]

Answer:

C. Solving this equation results in the statement -48 = 48. Because this is a false statement, the equation has no solution.

Step-by-step explanation:

8(3x - 6) = 6(4x + 8)

24x - 48 = 24x + 48

minus 24x from both sides and you get -48 = 48

A false statement means one side does not equal the other. False statement always means no solution

you can solve this equation for x, but looking at the answers it's not what the question is asking for

6 0
3 years ago
Simplify. 8u+9v+3u−5v<br> a. 5u + 4v<br> b. 15uv<br> c. 11u + 4v<br> d. 11u + 14v
Zarrin [17]
<span>8u+9v+3u−5v
= 11u + 4v

answer is </span><span>c. 11u + 4v</span>
7 0
3 years ago
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If 25 articles cost $43.75 how much does each cost?​
quester [9]

Answer:

$1.75

Step-by-step explanation:

I had this question and got it right!

8 0
3 years ago
What is the volume of a right triangular pyramid whose base is 5 meters on each side and whose altitude is 4 meters?
algol13

Answer: 10 for each side but in total is 20

Step-by-step explanation: u multiply 5 x 4 = 20 divided by 2 to get 10 meters and another is 4 divided by 2 is 2 x 5 is 10 meters times 2 is 20 total

7 0
3 years ago
The perimeter of a rectangle is 46 cm,<br> The length is 13 cm. What is the width?
Firlakuza [10]

Answer:

10 cm

Step-by-step explanation:

we know that the perimeter of a rectangle= 2(l+w)

given that the perimeter is 46 cm and length is 13 cm, so by putting the values we get,

2(13+w)=46

= 26+2w=46 (opening the brackets)

= 2w= 46-26

= 2w=20

= w=20/2

w= 10 cm

Cheers.

7 0
3 years ago
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