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sweet-ann [11.9K]
3 years ago
8

Simplify:(4x2 - 2x) - (-5x2 - 8x)

Mathematics
2 answers:
Marysya12 [62]3 years ago
7 0

Answer:

4x2+5x2-2x+8x=9x2+6x

Step-by-step explanation:

trapecia [35]3 years ago
6 0

Answer:

24x

Step-by-step explanation:

Calculate the product

8 and 10

(8x-2x)-(-10x-8x)

Collect like terms

(6x)-(-18x)

Remove any unnecessary parentheses

6x-(-18x)

When there is a - in front of an expression in parentheses, change the sign of each term in the expression

6x+18x

Collect like terms

24x

Answer = 24x

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What is the slope of the line whose equation is -2/3y - = 0?
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Step-by-step explanation:

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In ΔHIJ, the measure of ∠J=90°, HI = 8 feet, and JH = 1.9 feet. Find the measure of ∠H to the nearest tenth of a degree.
artcher [175]

Answer:

21.9°

Step-by-step explanation:

In ΔHIJ, the measure of ∠J=90°, HI = 8 feet, and JH = 1.9 feet. Find the measure of ∠H to the nearest tenth of a degree.

We solve this above question using the Sine rule

a/sin A = b/sin B

In ΔHIJ, the measure of ∠J=90°, HI = 8 feet, and JH = 1.9 feet.

Hence:

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Cross Multiply

∠H = arc sin(sin 1.9 × 90/8)

∠H = 21.9°

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