3 years ago

What are the factors of the expression x^2+x-20?

Mathematics

1 answer:

tatyana61 [14]3 years ago

3 0

Answer:

(x-4)(x+5)

Step-by-step explanation:

Find 2 numbers knowing sum (1) and product (-20). To find them, factor pairs of (-20) --> (-2,10) (-4,5). This sum is 1=b. Then, these 2 numbers are: - 4 and 5. Y=(x-4) (x+5). Hope this helped :)

You might be interested in

17% of 200 books is ....

nadya68 [22]

34 books would be the answer.

8 0

3 years ago

Read 2 more answers

The value of x varies directly with y, and when x= 1/3,y = 12. Write an equation to represent the direct variation.

shtirl [24]

Answer:

Equation: $y = 36x$

Step-by-step explanation:

The equation that represents a direct variation between variable x and variable y is given as $y = kx$ . Where, k is the constant of proportionality.

Find the value of k given that x = ⅓ and y = 12.

Plug the values into the equation.

$y = kx$

$12 = k\frac{1}{3}$

Multiply both sides by 3

$12*3 = k*1$

$36 = k$

Substitute the value of k into $y = kx$

$y = 36x$

Equation: $y = 36x$

5 0

3 years ago

What is the area of this composite shape?

guajiro [1.7K]

Step-by-step explanation:

parallelogram area is:h×base

10×14=140

we have two so

140×2=280

traingle is:h×base/2

18-10=8=h

8×14/2=56

56×3=168

168+280=448

8 0

3 years ago

How do you do these problems they are not my kind of level of math

Romashka [77]

The both equations should equal 180° when combined. So when you add like-terms you get 8x+20=180. X=20°

6 0

4 years ago

Read 2 more answers

What are the asymptote and the Y intercept of the function shown in the graph f(x)=3(0.2)^x+2

In-s [12.5K]

Answer:

Horizontal asymptote y=2

y intercept (0,5)

Step-by-step explanation:

Horizontal asymptote y=2

y intercept (0,5)

7 0

3 years ago