3 years ago

PLEASE HELP 30 POINTS!!

Mathematics

1 answer:

astraxan [27]3 years ago

3 0

Your answer would be C

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You spend $16 on 3 notebooks and x binders . Notebooks cost $2 each and binders cost $5 each. Write an equation you can use to f

Firlakuza [10]

Answer:

Step-by-step explanation:

Write the equation as:

Price of books times number of books + price of binders times number of binders = total price

So then the final answer is 3(2)+5(x)=16

4 0

3 years ago

What is the completely factored form of d4 -8d2 + 16

irinina [24]

According to Vieta's Formulas, if $x_1,x_2$ are solutions of a given quadratic equation:

$ax^2+bx+c=0$

Then:

$a(x-x_1)(x-x_2)$ is the completely factored form of $ax^2+bx+c$ .

If choose $x=d^2$ , then:

$\displaystyle x^2-8x+16=0\\\\x_{1,2}= \frac{8\pm \sqrt{64-64} }{2}=4$

So, according to Vieta's formula, we can get:

$x^2-8x+16=(x-4)(x-4)= (x-4)^2$

But $x=d^2$ :

$d^4-8d^2+16=(d^2-4)^2=[(d+2)(d-2)]^2=(d+2)^2(d-2)^2$

8 0

3 years ago

Given: 3x + 1 = -14; Prove: x = -5<br> Statements

WINSTONCH [101]

Step-by-step explanation:

3x + 1 = -14

3x = -14 - 1

3x = -15

x= -15÷3

x= -5

4 0

3 years ago

If cosθ=513, what is sinθ?

Roman55 [17]

The only values a cosine can have are from -1 to 1.

6 0

3 years ago

????????????????????????????

frutty [35]

Answer:

Step-by-step explanation:

i took the same question hope this helps :D

5 0

3 years ago

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