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8_murik_8 [283]
3 years ago
14

Help me with this question?

Mathematics
1 answer:
uranmaximum [27]3 years ago
8 0
To answer the question, you have to find the lengths of each side. the formula for a triangle is base *height divided by 2
the base is 7 and the height is 5. multiply these to get 35/2 =17.5
17.5units squared 
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Whats the answer for (5x + 8)(4x² + 6x - 8)
mestny [16]
(5x + 8)(4x^2 + 6x - 8)\\ \\ 5x(4x^2 + 6x - 8) + 8(4x^2 + 6x - 8) \\ \\ 20x^3 + 30x^2 - 40x + 8(4x^2 + 6x - 8) \\ \\ 20x^3 + 30x^2 - 40x + 32x^2 + 48x - 64 \\ \\ 20x^3 + (30x^2 + 32x^2) + (-40x + 48x) - 64 \\ \\ 20x^3 + 62x^2 + 8x - 64 \\ \\

The final result is: 20x^3 + 62x^2 + 8x - 64.
4 0
3 years ago
Find the product. 312 × 15 <br><br> A.4,680 <br> B.4,670<br> C. 1,872 <br> D.1,862
lana [24]

Answer:

A. 4,680

Step-by-step explanation:

312*15=4,680

7 0
2 years ago
Read 2 more answers
There are 35 people who have
pentagon [3]
21 people are over 15
4 0
2 years ago
Read 2 more answers
Whats 1/5 - 1/7 please can you tell me how to work it out<br> thanks
Andrej [43]
Convert the fractions so they both have the same denominator (bottom part of the fraction)

1/5 = 7/35

This is because 5*7=35, so 1*7=7

1/7 = 5/35

This is because 7*5=35, so 1*5 =5

Then subtract the top numbers to get the answer:

\frac{7}{35}-\frac{5}{35} = \frac{2}{35}
3 0
3 years ago
Read 2 more answers
Solve using long division.
Mkey [24]

Answer:

Quotient is 3x-5 and remainder is 0.

Step-by-step explanation:

Given:

Dividend = 3x^2+7x-20

Divisor = x+4

The long division is shown in the attachment.

Step 1: we need to divide 3x^2+7x-20 with x+4 we first multiply x+4 with 3x we get the remainder as -5x-20

Quotient as 3x.

Step 2: Now the dividend is -5x-20 and divisor x+4 now we will multiply x+4 with -5 we get the remainder as 0 and Quotient as 3x-5

Hence Quotient is 3x-5 and remainder is 0.

6 0
3 years ago
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