MATHEMATICS MIDDLE SCHOOL

Three times twice an unknown number equals 30.

Answers

Answer 1

Answer:

If three times twice an unknown number equals 30, then the unknown number is 5.

What is the unknown number in the question ?

It is given that three times twice an unknown number equals 30.

Let the unknown number be x.

From the above information,

⇒ 3*(2x) = 30

⇒ 6x = 30

∴ x = 5

Thus the unknown number is 5 .

Therefore, if three times twice an unknown number equals 30, then the unknown number is 5.

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Answer 2

Answer: x is unknown number
3x=30
divide by three on both sides and get
x=10

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If a cross section was cut that was parallel to the base of a triangular prism below a shape with that cross section be ? A. Square
B. Triangle
C. Parallelogram
D. Rectangle

Answers

The answer is A) square

The answer would be A

The prism has a surface area of 202 ft2.What would the surface area of the prism be if each dimension were tripled?

ft2

Answers

Let's call the dimensions of the prism (I will assume it is rectangular) a, b, and c.

The surface area is:

$2ab + 2ac + 2bc = 202$

The dimensions of the new prism are 3a, 3b, and 3c.

This surface area would be:

$2(3a)(3b) + 2(3a)(3c) + 2(3b)(3c) =$

$2(9ab) + 2(9ac) + 2(9bc) =$

$9(2ab + 2ac + 2bc) =$

$9(202) = \boxed{1818}$

Hope this helps :D

Write 5 equations where the sum is equal to 9

Answers

1. 5 + 4
2. 0 + 9
3. 2 + 7
4. 1 + 8
5. 7 + 2

Here are 5 equations where the sum is equal to 9:

Equation 1: 4 + 5 = 9

Equation 2: 6 + 3 = 9

Equation 3: 2 + 7 = 9

Equation 4: 1 + 8 = 9

Equation 5: 0 + 9 = 9

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What is the ratio and rate of 5 pencils for 13 dollars?

Answers

Ratio - 5 : 13

$(13)/(5)= 2.6$

Rate - $2.60 per pencil

Arleen has a gift card for a local lawn and garden store. She uses the gift card to rent a tiller for 4 days. It costs $35 per day to rent the tiler. She also buys a rake for $9. What is the change in the value of her gift card

Answers

She has $149 less of what she had on the gift card.

$149 less than what she had on her gift card

Two non-simultaneous events have an equal likelihood of occurring (50%). If the events are independent of each other, what is the probability that they will both occur?

Answers

1/2 * 1/2 = 1/4 there is a 25% chance that they will both occur

Answer: 25%

Step-by-step explanation:

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