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2 years ago

7

Eric buys a skateboard, and his total bill is $104. The rate of sales tax was 4%. You can solve the equation s + 0.04s = 104 to

find the cost of the skateboard before tax.

1 answer:

Rainbow [258]2 years ago

7 0

sorry i really needed the points

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Please show your work and explain it.

Maru [420]

Answer:

$f(x)=\dfrac{x+2}{2(x-2)}$

Step-by-step explanation:

Remember when you divide fractions, you need to get the reciprocal of the divisor and multiply. So your first simplification would be:

$\dfrac{x^2+4x+4}{x^2-6x+8}\div\dfrac{6x+12}{3x-12}\\\\=\dfrac{x^2+4x+4}{x^2-6x+8}\times\dfrac{3x-12}{6x+12}\\\\=\dfrac{(x^2+4x+4)(3x-12)}{(x^2-6x+8)(6x+12)}$

Next we factor what we can so we can further simplify the rest of the equation:

$=\dfrac{(x^2+4x+4)(3x-12)}{(x^2-6x+8)(6x+12)}\\\\=\dfrac{(x+2)(x+2)(3x-12)}{(x^2-6x+8)(6(x+2))}\\\\$

We can now cancel out (x+2)

$=\dfrac{(x+2)(3x-12)}{(x^2-6x+8)(6)}$

Next we factor out even more:

$=\dfrac{(x+2)(3)(x-4)}{(x-2)(x-4)(6)}$

We cancel out x-4 and reduce the 3 and 6 into simpler terms:

$=\dfrac{(x+2)(1)}{(x-2)(2)}$

And we can now simplify it to:

$=\dfrac{x+2}{2(x-2)}$

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3 years ago

What is the slope of (1,5) and (4,-2)

andriy [413]

Answer:-2-5÷4-1=-1

Step-by-step explanation:

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3 years ago

How to use the numbers 4, 7, 3, and 9 to get the number 25 only using the operations multiplication, division, and addition

bearhunter [10]

Answer:

(9 x 7)/3 + 4

Step-by-step explanation:

9 x 7 = 63

63 divided by 3 is 21.

21 + 4 = 25

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uysha [10]

The second day, she sold more.

We know 7/9 is about 0.777777777778

And 0.78 < 0.85

So the second day she sold more.

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3 years ago

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Which numbers are divisible by 5 and 9

ra1l [238]

Answer:

Divisible by 5: 50, 75, 90, 165, 120.

Divisible by 9: 99, 198, 171, 9990, 3411

Step-by-step explanation:

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2 years ago