MATHEMATICS MIDDLE SCHOOL

(7n + 2)(4n+8)
What is the answer?

Answers

Answer 1
Answer:

Answer:

28n2+64n+16

Step-by-step explanation:
Answer 2
Answer: 28n² + 56n + 8n + 16
= 28n² + 64n + 16

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3. An airplane flies 105 miles in ½ hour. How far can it fly in 1 ¼ hours at the same rate of speed?

Answers

262.5 miles
explanation 1/4 is half of 1/2 so 52.5 is half of 105 and then 210 for an hour of travel

Answer:

105 at 30 min.

x at 75 min.

105 mph x 2 = 210 mph at one hour

There is still 15 min to go soooo...

210/4 = 52.5

210 + 52.5 = 262.5 mph for 75 min

Check by dividing

262.5/75=3.5

A scale fora map states that 2 inches equals 25 miles. If the distance from Dallas to Houston on the map is 19.2 inches, what is the actual distance, in miles, between Dallas and Houston? Step by Step how u got the answer
thx

Answers

The actual distance, in miles, between Dallas and Houston is 240 miles.

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

A scale for a map states that 2 inches equal 25 miles. If the distance from Dallas to Houston on the map is 19.2 inches.

2 inches = 25 miles

19.2 inches = ( 19.2 x 25 ) / 2

19.2 inches = 240 miles

To know more about an expression follow

brainly.com/question/15225582

#SPJ2
They say that 2 inches on the map equals 25 miles in real life.
That means that 1 inch on the map equals how many miles in real life?

... [time for you to think] ...

That's 12.5 miles. (simply 25 / 2 = 12.5).

So one inch on the map is equal to 12.5 miles in real life.
Starting from this....

So 1 inch on the map is equal to 12.5 miles in real life.
So 2 inches on the map is equal to 25 miles in real life. (2x12.5)
So 3 inches on the map is equal to 37.5 miles in real life. (3x12.5)
So 4 inches on the map is equal to 50 miles in real life. (4x12.5)
So 19.2 inches on the map is equal to <....> miles in real life (19.2 x 12.5).

For you to fill in the <...> using the steps I gave you.

3x-2(5-x)=-3(x-10)+3x show work​

Answers

This is what I got! I’m a lil rusty.

3x-2(5-x)=-3(x-10)+3x

3x-10+2x=-3x+30+3x
5x-10=30
5x=40
x=8

How do I write a mixed number as a fraction 6 5/8

Answers

You multiply the denominator (bottom number) by the whole number and add the numerator (top number) to it so you get 53/8

Factor each expression 11x+55

Answers

11x+55
= 11x + 11 x 5
= 11(x+5)
11x + 55 = 11(x+5)

Your final answer is 11(x+5).

Describe the ratio of gray tiles to white tiles in 3 different ways

Answers

Gray:White, Gray to White, Gray/White
Gray:White,Gray to White. this would be the fraction Gray/White
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