3 years ago

7th grade work really need help on this!

Mathematics

1 answer:

seropon [69]3 years ago

4 0

I really don’t know

I really dont know

You might be interested in

The lengths of the sides of a triangle are in the extended ratio 7 : 9 : 10. The perimeter of the triangle is 52 cm. What are

Tema [17]

Check the picture below

solve for "x"

3 0

3 years ago

3) What is the value of n? *<br> 2n - 36

Kryger [21]

Answer:

ans is behind it

Step-by-step explanation:

hope it helps uh

3 0

3 years ago

NEED HELP ASAP!! ANSWER A THROUGH F PLEASE!!

Verdich [7]

Answer:

A. 12

B. 4

C. 10

D. 8

E. 36

F. 70

5 0

3 years ago

Complete the steps to solve the polynomial equation x3 – 21x = –20. According to the rational root theorem, which number is a po

jeka94

Answer:

Zeroes : 1, 4 and -5.

Potential roots: $\pm 1, \pm 2, \pm 4, \pm 5, \pm 10, \pm 20$ .

Step-by-step explanation:

The given equation is

$x^3-21x=-20$

It can be written as

$x^3+0x^2-21x+20=0$

Splitting the middle terms, we get

$x^3-x^2+x^2-x-20x+20=0$

$x^2(x-1)+x(x-1)-20(x-1)=0$

$(x-1)(x^2+x-20)=0$

Splitting the middle terms, we get

$(x-1)(x^2+5x-4x-20)=0$

$(x-1)(x(x+5)-4(x+5))=0$

$(x-1)(x+5)(x-4)=0$

Using zero product property, we get

$x-1=0\Rightarrow x=1$

$x-4=0\Rightarrow x=4$

$x+5=0\Rightarrow x=-5$

Therefore, the zeroes of the equation are 1, 4 and -5.

According to rational root theorem, the potential root of the polynomial are

$x=\dfrac{\text{Factor of constant}}{\text{Factor of leading coefficient}}$

Constant = 20

Factors of constant ±1, ±2, ±4, ±5, ±10, ±20.

Leading coefficient= 1

Factors of leading coefficient ±1.

Therefore, the potential root of the polynomial are $\pm 1, \pm 2, \pm 4, \pm 5, \pm 10, \pm 20$ .

3 0

4 years ago

This is my last ONE I HAVE TO ANSWER HELP ME

damaskus [11]

A.
To solve for volume you multiply the measurements of width height and length

3 0

3 years ago

Read 2 more answers