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Lemur [1.5K]
3 years ago
11

Multiply.

Mathematics
1 answer:
prohojiy [21]3 years ago
8 0

Answer:

D. 3x² + 19x - 14

Step-by-step explanation:

Use FOIL to find the answer.

First: x * 3x = 3x²

Outer: -2 * x = -2x

Inner: 3x * 7 = 21x

Last: 7 * -2 = -14

Form the equation:

3x² - 2x + 21x - 14

Combine like terms.

3x² + 19x - 14

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malfutka [58]
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5 0
3 years ago
Multiply. 4x(y+x+z)<br><br>please help​
liubo4ka [24]

Answer:

4xy + 4x² + 4xz

Step-by-step explanation:

4x(y+x+z)

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3 0
3 years ago
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Clodagh and Eva went school supply shopping together. Clodagh bought 3 packs of pencils and 5 notebooks for a total of $18. Eva
elena55 [62]

Answer:

each notebook costs $2.70

each pack of pencils costs $1.50

Step-by-step explanation:

system of equations:

let p = pack of pencils

let n = notebook

3p + 5n = 18

4p + 4n = 16.8

I used the elimination method by multiplying the first equation by 4 and the second equation by -3

4(3p + 5n = 18)  =  12p + 20n = 72

-3(4p + 4n = 16.8)  =  -12p -12n = -50.4

adding the new equations together you get:  8n = 21.6

n = 21.6/8

n = $2.70

solve for 'p':

3p + 5(2.7) = 18

3p + 13.5 = 18

3p = 4.5

p = $1.50

4 0
2 years ago
a right prism with a base perimeter of 9 units a height of 5 units and a total base of 16 square units has a surface area of how
slava [35]
The answer is 80 because of 16 times 5 that's how you get your answer
 
hope this helps :)

4 0
3 years ago
What is 8 over 9 in ratio
fenix001 [56]
8 over 9
= 8/9
= 8:9

Final answer: 8:9~


4 0
3 years ago
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