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tatyana61 [14]
1 year ago
8

Factor x2 – 3x – 28.

Mathematics
1 answer:
wariber [46]1 year ago
3 0

Values needed to complete the X diagram are:

On top -28, On the bottom: -3 and On the sides: -7 and 4.

<h3>What do you mean by factorization?</h3>

An algebraic expression is factorised when it is written as the product of its factors.

The given equation is :

F(x) = x²-3x-28

finding factors,

=  x²-7x+4x-28

= x(x-7) +4(x-7)

= (x-7)(x+4)

Given general equation is ax²+bx+c,

on comparing with  x²-3x-28

a = 1

b = -3

c = -28

ac = 1*(-28) = -28

To know more about factorization please visit:

brainly.com/question/23153500

#SPJ13

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B
VARVARA [1.3K]

Answer:

Hypothenus = 22

Step-by-step explanation:

From the question given above, we were told that the triangles are congruent (i.e same size). Thus,

AC = EF

BC = DE

To obtain the length of each Hypothenus, we shall determine the value of y and x. This can be obtained as follow:

For y:

AC = y + 3

EF = 2y + 1

AC = EF

y + 3 = 2y + 1

Collect like terms

3 – 1 = 2y – y

2 = y

y = 2

For x:

BC = 5x + 7

DE = 6x + 2y

y = 2

DE = 6x + 2(2)

DE = 6x + 4

BC = DE

5x + 7 = 6x + 4

Collect like terms

7 – 4 = 6x – 5x

3 = x

x = 3

Finally, we shall determine the length of each Hypothenus. This can be obtained as follow:

Hypothenus = BC

Hypothenus = 5x + 7

x = 3

Hypothenus = 5x + 7

Hypothenus = 5(3) + 7

Hypothenus = 15 + 7

Hypothenus = 22

OR

Hypothenus = DE

DE = 6x + 2y

y = 2

x = 3

Hypothenus = 6(3) + 2(2)

Hypothenus = 18 + 4

Hypothenus = 22

5 0
3 years ago
3. What is the measure of angle B from the right triangle below?
Talja [164]

Answer:

angle B = 78.46°

Step-by-step explanation:

Use the cosine ratio

cosB=\frac{2}{10} =0.2

B=cos^{-1} (0.2)=78.46^{0}

Hope this helps

8 0
2 years ago
7. A 15-foot ladder is leaning against a building. The vertical distance from the ground to the
adelina 88 [10]
The best answer to go with is b
7 0
3 years ago
Read 2 more answers
SOMEONE HELP ME please​
olga nikolaevna [1]

Answer:

the first and second one

Step-by-step explanation:

the two last ones go over budget

1) 20×30=600 30×50=1500 total is 2100

2)50×30=1500 10×50= 500 total is 2000

3) 40×30=1200 40×50=2000 total is 3100>over budget.

4) 20×30=600 60×50=3000 total is 3600> way over budget.

3 0
2 years ago
Can someone give me the best broken down way to solve these questions?
sdas [7]

Answer:

6 inches.

Step-by-step explanation:

Set up a proportion and solve for the missing variable.

\frac{2}{5}=\frac{x}{15}\\\\15(\frac{2}{5})=15(\frac{x}{15})\\\\6=x

7 0
3 years ago
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