3 years ago

What are factors of 42 that subtract to -8

Mathematics

1 answer:

MrRa [10]3 years ago

8 0

You might have to do the quadratic formula

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What is (5x-2)(4x^2 -3x-2)

Ronch [10]

Answer: 20x^3 - 23x^2 - 4x + 4

Explanation:

Use distributive property:

(5x-2)(4x^2 - 3x-2)
= 20x^3 - 15x^2 - 10x - 8x^2 + 6x + 4
= 20x^3 - 23x^2 - 4x + 4

8 0

2 years ago

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If Lylah completes the square for f(x) = x 2 + 24x -18 in order to find the minimum, she must write f(x) in the general form f(x

olga nikolaevna [1]

Answer:

Step-by-step explanation:

F(x)= (x − a)2 + b

Rewrite the equation as (X-a)2 + b= f(X) (X-a)2 + b= f(X) subtract (x-a)^2 from both sides of the equation b=f(x)- (x-a)^2

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3 years ago

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kherson [118]

Answer:

Sine of C=?

Among the given options which is the correct one.

Step-by-step explanation:

Consider a right-angle triangle ABC.

$angle B=90^{0}$

In a right angle triangle, one angle $90^{o}$ .

The sum of all the angles is $180^{o}$ .

$angle A +angle B+angleC=180^{0}angleA+90^{0} +angle C=180^{0}\\angleA+angleC=180^{0} -90^{0} \\angleA+angleC=90^{0} \\angleA=90^{0} -angle C$

Consider the trigonometric ratios and use the traingle ABC.

$SinC=\frac{AB}{AC}$

$CosA=\frac{AB}{AC}$

$angleA=angle(90-C)\\Hence,\\SinC=Cos(90-C)$

Answer:

OptionF). $Sine of C=Cos(90^{0} -C)$

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2 years ago

There are 570 students at a school if each classroom holds 30 students how many classrooms are needed at the school?

Irina18 [472]

Answer: 19

Step-by-step explanation:

570 divided by 30

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2 years ago

If P = 2L + 2W; l = 3, w = 5, then P = 12 True or false, Step by Step Please.

Softa [21]

2(3)+2(5)=6+10 P=16 P=12 is false

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3 years ago