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aleksandrvk [35]

3 years ago

13

nadia needs to buy some cheddar cheese an 8-ounce package of cheddar cheese costs $2.40 a 12 -ounce package of cheddar cheese co

sts $3.36 find the unit price for the 8-ounce package

2 answers:

jeka57 [31]3 years ago

7 0

Answer:

dont know

Step-by-step explanation:

Serggg [28]3 years ago

4 0

Answer:

0.3

Step-by-step explanation:

2.40 ÷ 8 = 0.3

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384/960
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3 years ago

Use completing the square to determine which of the following gives the solutions to 3x2 - 24x + 40 = 28.

jeka94

Answer:

$x=4+2\sqrt{3}$

$x=4-2\sqrt{3}$

Step-by-step explanation:

<u>Completing the square</u>

when $ax^2+bx+c=0$

Given equation:

$3x^2-24x+40=28$

Subtract 40 from both sides:

$\implies 3x^2-24x=-12$

Divide both sides by 3:

$\implies x^2-8x=-4$

Add the square of half the coefficient of $x$ to both sides:

$(\frac{b}{2})^2=(\frac{-8}{2})^2=16$

$\implies x^2-8x+16=-4+16$

Factor the left side and simplify the right side:

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Square root both sides:

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5 0

2 years ago

Solve the equation. Check your answer.<br> 4|2x - 2|= 32

Eva8 [605]

Answer:

x

=

4

or

x

=

−

4

Explanation:

First divide throughout by

2

to get

x

2

=

16

Now take the square root on both sides to get

x

=

±

4

.

You may now substitute the values of

x

=

4

and

x

=

−

4

back into the original equation and check that it satisfies the equation which it does.

Step-by-step explanation:

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3 years ago

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