MATHEMATICS MIDDLE SCHOOL

Mr. John Doe was figuring out his federal income tax. His income was $26,800, but he was able to subtract $5,500 in deductions. He paid 15% of the remaining income tax. How much did he pay?

Answers

Answer 1

Answer:

Okay so the income tax minus the deductions will come to:

26,800 - 5,500 = 21,300

So remaining tax is 21,300.

To show that he paid 15% of it, we do:

15/100 (21300) = 3,195

So he already paid $3,195 of his income tax.

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Is each equation equivalent to y=-1/2x+3

123 times 60 __________ equals 1,480 A.
True
B.
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Answers

123x60=7,380

So, the answer is B. False

Drew bought a chemistry book for $30. Later that book was marked down by 20%. By how much has that value been decreased? Btw please show work.

Answers

Solution:

$30 - (30*0.80) = 30 - 24 = 6$

or you can do

$30 * 0.20 = 6$

30 over 100 times 20= 6
so it decreased by 6 dollar

Tomas learned that the product of the polynomials (a + b)(a2 – ab + b2) was a special pattern that would result in a sum of cubes, a3 + b3. His teacher put four products on the board and asked the class to identify which product would result in a sum of cubes if a = 2x and b = 1.

Answers

Answer:

$8x^3+1$ is the answer.

Step-by-step explanation:

Here we know that

$(a+b) (a^2-ab+b^2) = a^3+b^3$

here we have a =2x and b =1

on plugging these values we get

$a^3+b^3=(2x)^3+(1)^3\n8x^3 +1$

The answer is 2x because the evasion is (2x)3+(1)3. 3 times 1 is 3. so it is (2x)3+3. you more the 3 next to the 2x over and now it id 2x+3-3.2x

please help on lesson 13.2 independent practice. Pierre's parents ordered some pizzas for a party. 4.5 pizzas were eaten at the party. There were at least 5 1/2 whole pizzas left over. How many pizzas did Pierre's parents order? QUICKLY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!