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3 years ago

Price Tax Rate Tax

Mathematics

1 answer:

hodyreva [135]3 years ago

6 0

199 *0.05 = 9.95

4750 * 0.06 = 285

99.50 * 0.047 = 4.68

19.88 * 0.069 = 1.37

8.95 * 0.072 = 0.64

14.27 * 0.068 = 0.97

544.38 * 0.042 = 22.86

7.49 * 0.081 = 0.61

28.56 * 0.075 = 2.14

14.98 * 0.049 = 0.73

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When three times the sum of a number and seven is increased by ten, the result is four. What is the number ?

densk [106]

Answer:

x=9 :))

Step-by-step explanation:

First set up your equation.

"3 times" is multiplication

"THE SUM of A NUMBER and seven" that is parenthesis because of the multiplication before it

"is increased by ten" that is an addition at the end

Now we have 3(x+7)+10=4

Solve your equation!

Distribute the 3 now we have 3x+21+10=4

Add like terms

now it should look like this... 3x+31=4

Subtract 31 from both sides and it looks like...

3x=27

Divide by the x-value

x=9

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3 years ago

X^2+25 A.(x+5)(x+5) B.(x+5)(x-5) C.(x-5)(x/5) D.prime

adell [148]

It’s prime because none of the other answers work.

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3 years ago

What is the solution to this equation: X+7=-8

Brilliant_brown [7]

Answer:

$\boxed {x = -15}$

Step-by-step explanation:

Solve for the value of $x$ :

$x + 7 = -8$

-Subtract both sides by $7$ :

$x + 7 - 7 = -8 - 7$

$\boxed {x = -15}$

So, the value of $x$ is $-15$ .

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3 years ago

Expand and simplify 6(2x - 3) - 2(2x + 1)

Harman [31]

Answer:

8x - 20

Step-by-step explanation:

6(2x - 3) - 2(2x + 1)

Distribute

6(2x) -6( 3) - 2(2x) -2( 1)

12x -18 -4x -2

Combine like terms

12x -4x -18 -2

8x-20

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3 years ago

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can someone give me a good explanation of scientific notation. simple but smart. i’m in algebra 1 honors

Kaylis [27]

Answer:

Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form. It may be referred to as scientific form or standard index form, or standard form in the UK.

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2 years ago