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Elza [17]
3 years ago
15

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:

B

Step-by-step explanation:

i took the same question hope this helps :D

5 0
3 years ago
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