The scale of a square map indicates that each inch on the map corresponds to 5 miles. Write an expression that describes the area of land shown on the map. If the map is 8 inches on one side, what is the area of land shown on the map.

Answers

Answer 1

Answer: If x is the number of inches then the area is A = (5x)^2
So if x is 8 the area is (5*8)^2 = 1600 square miles

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the distance across a field is 20 m.is the distance across the same field greater than or less than 20km?Explain

Answers

1km=1000m
convert
20km times 1000=20000m
which is bigger 20,000m or 20m
20,000 is bigger

so 20m is less than 20km

its is less then because 1km=1000m so 20m is less than 20km

What is the factored form of the polynomial?
x2 − 12x + 27?

Answers

Answer:

(x-9)(x-3) which is the same as (x-3)(x-9)

Step-by-step explanation:

Think of ways to factor the last number 27. One way is 1*27 = 27. Another way is 3*9 = 27 and so on. Now think to yourself "which factor of 27 add to -12?". You'll need to consider negative factors. It turns out that

-3 plus -9 = -12

-3 times -9 = 27

Therefore the two values we care about are -9 and -3. So x^2-12+27 factors to (x-3)(x-9). The order of the factors does not matter. So we can write the answer as (x-9)(x-3) just fine.

X - 3/8 = 3/6

what is x.

Answers

X-3/8=3/6
Add 3/8 to both sides, to leave the variable alone
X= 3/6-3/8
Use common denominators-8 (3/6 is 1/2)
X= 4/8-3/8
X=1/8

Answer:

X is 7/8 or if decimal is need it is 0.875

How many 1/4 inch tiles would Colby need to cover the top of the box?

Answers

if it is a full 1 inch then he would need 4...
1/4+1/4+1/4+1/4=2/4+2/4= 4/4= 1
4 is the final answer
if this helped then plz mark as brainliest and thank :)

The population od a small country is 5,740,000. Express this number using scientific notation. Say steps to.

Answers

5,740,000( you have to make the number less than 10

5.740000 ( you put a decimal to make it less )

5.74e6 (you count how many times you skipped over to get at the decimal point , and that's your awnser .

28 Rowan raised $640 in a charity walk last year. This year he raised 15% more than he raised last year. How much money did Rowan raise this year?

Answers

rowan raised 640 last year
this year he raised 15% more
percent means parts out of 100
15%=15/100=3/20
15% of 640
'of' can be translated as multiply
15%=3/20
3/20 times 640=1920/20=192/2=96
this is 15%
he raised 15% MORE SO
640+96=this year=736

he raised 736 dollars this year

640$ - is 100% - in last yearin this year is 15% more, so 100+15=115%make proportion640 is 100%x is 115%x=640*115/100=736$Answer: Rowan raised 736$ this year

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