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ICE Princess25 [194]
3 years ago
9

Math on khan academy

Mathematics
1 answer:
IRINA_888 [86]3 years ago
5 0
The answer is b I believe
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If x = -1 what is the value of y in the equation? y = 8x3 + 12x2 - 6x - 3
OLEGan [10]

Answer:

y=7

Step-by-step explanation:

x = -1 x is one , replace x with negative one in the equation. using the order of operation PEMDAS.

Remember this -1³= -1×-1×-1=-1

-1²=-1×-1=1.

y =8x³+12x²-6x-3

y= 8(-1)³+12(-1)²-6(-1)-3

<h3>Exponents</h3>

y= 8(-1)+12(1)-6(-1)-3

<h3>Multiplication</h3>

y= -8+12+6-3

<h3>Addition</h3>

y= 10-3

<h3>Subtraction</h3>

y= 7

<h3>Therefore y= 7</h3>
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At a candy store you could get 2 giant lollipops for $4.48. How much would it cost to buy 7 lollipops?
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Answer:

15.68$

Step-by-step explanation:

You calculate the price of one lollipop:

4.48/2= 2.24

The multiply that by 7.

2.24*7= 15.68$

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3 years ago
What is algebra in 5th grade
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Step-by-step explanation:

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