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elena55 [62]
3 years ago
5

Whats the answer for (5x + 8)(4x² + 6x - 8)

Mathematics
1 answer:
mestny [16]3 years ago
4 0
(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.
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24 cm ,18cm ,c <br> We are looking for c
Ierofanga [76]

Step-by-step explanation:

we can find the value of c by Pythagoras theorem

according to Pythagoras theorem

h² = a² + b²

where

h = hypotenuse (i.e. longest side of a right angled triangle)

a = side

b = base

so, we have to find h or hypotenuse here

h² = (24)² + (18)²

h = 576 + 324 = 900

h² = √900 = 30

c = 30

therefore, value of c is 30.

Hope this answer helps you dear!

3 0
2 years ago
Find the x and the area of the shape perimeter is 64.5​
Umnica [9.8K]

Answer:

x=8

A = 192

Step-by-step explanation:

The perimeter is the sum of the outer lengths

17.9 + 22.6 + 3x = 64.5

Combine like terms

40.5 +3x = 64.5

Subtract 40.5 from each side

40.5 +3x -40.5 = 64.5 - 40.5

3x =24

Divide each side by 3

3x/3 = 24/3

x = 8

The area of a triangle is given by

A = 1/2 bh

The base is 3x = 3(8) =24

and the height is 2x = 2(8) =16

A = 1/2 (24) * 16

A =192

4 0
3 years ago
Which is what is the answer that estimates the product of 3.09×304.87
Feliz [49]

Answer:

900

Step-by-step explanation

That would be  3 * 300 = 900

8 0
3 years ago
B. Subtract polynomials: (3x – 5 – 7x2) – (–2 + 6x2 – 5x)
Lapatulllka [165]

Answer:

(3x-5-7x^{2} )-(-2+6x^{2} -5x)

step\:1: 3x-5-7x^{2} +2-6x^{2} +5x

step\:2:(-7x^{2} -6x^{2} )+(3x+5x)+[(-5+2)]

step\:3:-13x^{2} +8x-3

<u>OAmalOHopeO</u>

7 0
3 years ago
How many gallons are in 48 pints?
vlabodo [156]

Answer:

6

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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