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2 years ago

Which of the following prove that (-9)(4) = -36?

Mathematics

1 answer:

Luba_88 [7]2 years ago

4 0

Answer:

C If I lost 9 pounds every month for 4 months in a row, then I lost 36 pounds.

Step-by-step explanation:

You might be interested in

Find all the zeros of the polynomial function p(x) = x3 – 5x2 + 33x – 29

hram777 [196]

Answer:

$\large \boxed{\sf \ \ x=1, \ \ x=2+5i, \ \ x=2-5i \ \ }$

Step-by-step explanation:

Hello,

I assume that we are working in $\mathbb{C}$ , otherwise there is only one zero which is 1. Please consider the following.

First of all, <u>we can notice that 1 is a trivial solution</u> as

$p(1) = 1^3-5\cdot 1^2 + 33\cdot 1-29=1-5+33-29=0$

It means that (x-1) is a factor of p(x) so we can find two real numbers, a and b, so that we can write the following.

$p(x)=(x-1)(x^2+ax+b)=x^3+ax^2+bx-x^2-ax-b=x^3+(a-1)x^2+(b-a)x-b$

Let's identify like terms as below.

a-1 = -5 <=> a = -5 + 1 = -4

b-a = 33

-b = -29 <=> b = 29

$\boxed{ \ p(x)=(x-1)(x^2-4x+29) \ }$

Now, we need to find the zeroes of the second factor, meaning finding x so that:

$x^2-4x+29=0 \ \text{ complete the square, 29 = 25 + 4} \\ \\ x^2-2\cdot 2 \cdot x+2^2+25=0 \\ \\ (x-2)^2=-25=(5i)^2 \ \text{ take the root } \\ \\x-2=\pm 5i \ \text{ add 2 } \\ \\ x = 2+5i \ \text{ or } \ x = 2-5i$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

5 0

3 years ago

Write the equation of a line that passes the point (-6,9)and is perpendicular to a line that passes through the points (-2,1) an

Vanyuwa [196]

Answer:

hope you like my answer its-11

4 0

2 years ago

The volume of a prism with base B is 20 cubic centimeters. Find the area of the base of the height of the prism is 5 centimeters

marshall27 [118]

Answer:

C 12.5cm is the answer good luck

5 0

3 years ago

A) x³y²if x = 2 and y = 4

kow [346]

Answer:

128

Step-by-step explanation:

x³y²if x = 2 and y = 4

x³*y²

$(2)^{3} * (4)^{2}$

(2*2*2)*(4*4)

(8)*(16)

128

8 0

1 year ago

16) w(x) = 4x + 4; Find w(x + 4)

Zina [86]

$\\ \tt\hookrightarrow w(x)=4x+4=4(x+1)$

Now

$\\ \tt\hookrightarrow w(x+4)=4(x+4+1)$

$\\ \tt\hookrightarrow w(x+4)=4(x+5)$

$\\ \tt\hookrightarrow w(x+4)=4x+20$

3 0

1 year ago