MATHEMATICS MIDDLE SCHOOL

number 13,is confusing to me can any body show me how this problem is done so I can understand it better

Answers

Answer 1

Answer:

f(x) = 2x; g(x) = 3x^2 + 1

(f x g)(4) is 2x(3x^2 + 1)

2x(3x^2 + 1)

6x^3 + 2x

6(4)^3 + 2(4)

6(64) + 8

384 + 8

392

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HELP ASAP!! 10 POINTS!!!

20% of the whole gem is 26 what’s the size of the hole gem
ASAP

Answers

Answer:

Step-by-step explanation:

20% of the whole gem is 26

let the whole gem be x......" of " means multiply..." is " means equals...turn ur percent to a decimal

0.20(x) = 26 ....divide both sides by 0.20

x = 26 / 0.20

x = 130 <=== the whole gem

20% of a number is x. What is 100% of the number?
Assume x > 0.

Answers

y - the number

$20\% y=x \ \ |* 5 \n100\%y=5x$

5x is 100% of the number.

Final answer:

To find 100% of the number, when given 20% of the number is x, you would divide x by 0.20 or multiply x by 5. Thus, the entire number is 5x, for x > 0.

Explanation:

In the given question, 20% of a number is represented as x. To find 100% of the number, or the total number itself, we need to set up a simple proportional equation. First, we equate the knowns. Therefore, 20%x is equal to 100% of the unknown number.

So, let's set up the equation: 20%/100% = x/number.

By simplifying this equation, you can calculate the complete number by dividing x by 0.20, or in other words, multiplying x by 5.

If and only if x > 0, the total number is therefore 5x.

Learn more about Percentage Calculation here:

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What is the ratio 8 to 72 expressed as a fraction in simplest form

Answers

8/72 then you simplify then 8 and 72 are both divisible by 8 so 8÷8=1 and 72÷8=9 so your simplified fraction for the ratio 8/72, is 1/9

8 and 72 are both divisible by 8 and 8 divided by 8 =1and 72divided by 8=9 so now you have to simplfy your fraction so when you simplfy your fraction it should look like this 1/9.

Joe wanted to know more about how the cost of fertilizer for his lawn-care business was changing. The cost of a bag of fertilizer just increased from $8 to $15. What is the percentage increase of the price? Represent the change as a fraction, percent, and decimal.

Answers

price of a bag of fertilizer increased from $8 t0 $15
thus the price increase = $7
% increase = 7/8 * 100 = 87.5%
in decimal = 0.875 divide by 100
in fraction = 875/1000

What is 2 3/8 times 16

Answers

The solution of the expression ''2 3/8 times 16'' will be 38.

What is an expression?

Mathematical expression is defined as the collection of the numbers, variables and functions by using signs like addition, subtraction, multiplication, and division.

Given that;

The expression is;

''2 3/8 times 16''

Now, We can formulate as;

⇒ 2 3/8 × 16

⇒ 19/8 × 16

⇒ 19 × 2

⇒ 38

Thus, The solution of the expression ''2 3/8 times 16'' will be 38.

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