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Stolb23 [73]
3 years ago
8

Subtract (2x^3+9x-8)-(4x^2-15x+7)

Mathematics
1 answer:
scoundrel [369]3 years ago
3 0
(2x^3+9x)-(4x^2-15x+7)
(8x+9x)-(16x-15x+7)
(17x)-(1x+7)
 16x+7
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Factor x2+4x+3.
Alexxx [7]

Answer:

c. (x +3)(x + 1)

Step-by-step explanation:

Factoring an equation is a way of expressing an equation as the product of other linear expressions. The following expression,

x^2 +4x +3

Can be represented as the product of the following,

(x+3)(x+1)

To check this, one can distribute, one of the expressions over the other, then simplify, the result should be the starting expression,

(x+3)(x+1)\\

Distribute,

(x)(x)+(1)(x)+(3)(x)+(3)(1)

Simplify,

x^2 +x +3x + 3\\

x^2 +4x +3

8 0
3 years ago
Point Y is in the interior of ∠XWZ. Given that WX→ and WZ→ are are opposite rays, and m∠XWY=4(m∠YWZ) is m∠YWZ?.
EleoNora [17]

Answer:

m∠YWZ=36°

Step-by-step explanation:

Opposite rays are two rays that both start from a common point and go off in exactly opposite directions. Because of this the two rays (WX and WZ) form a single straight line through the common endpoint W.

If rays WX and WZ are opposite, then angle XWZ is straight angle. A straight angle always has the measure of 180°.

Point Y is in the interior of ∠XWZ, then angles XWY and EWZ are supplementary angles (together form straight angle XWZ). Supplementary angles always add up to 180°, then

m∠XWY+m∠YWZ=180°

You are given that

m∠XWY=4(m∠YWZ).

Substitute it into the previous equality:

4(m∠YWZ)+m\angle YWZ=180°

5(m∠YWZ)=180°

m∠YWZ=36°

5 0
3 years ago
put the numbers in order from least to greatest. negative square root of 29, -5.39, -27/5, -5 7/20. Thank you!
stepan [7]
-5.39,-5,27/5,7/20,29
5 0
3 years ago
13. Pete traveled 1,380 miles in two days. The first day, he traveled 1.5 times as far as he did the second day. How many miles
ArbitrLikvidat [17]
 i think it would be a. 920
5 0
3 years ago
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Choose all the sets containing the number –1.576.
strojnjashka [21]

Answer:

This number belongs to rational number and real number set.

Step-by-step explanation:

The given number is a rational number because it is terminating.

It is also a real number because it does not have any imaginary part.

So, this number belongs to rational number and real number set.

It cannot be an integer or whole number as it has decimal.

It cannot be irrational as well, as it is terminating.

3 0
3 years ago
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