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2 years ago

A geologist visits 40 volcanoes in Alaska and California. 15% of the volcanoes are in California.

Mathematics

1 answer:

kotegsom [21]2 years ago

3 0

Answer:

<h2>Most explained:</h2>

40% = 100%

15 = (100% - 15% = 85%) 85% in Alaska

California = 15% of 40 = (0.15 x 40) = 6

Alaska = 85% of 40 = (0.85 x 40) = 34

<h2>The simple way (or the way i found it simple):</h2>

<h3>(I found the simple way after i solve the first way)</h3>

Bye, i hope this helps.

<h3 />

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8 Maia is designing a frame that must cover an area of 2000 cm². This is her diagram of the area to be covered by her frame.

pentagon [3]

Answer:

(2000÷25) x 10= 800mm

Step-by-step explanation:

First you have to divide 2000 by 25 to see what the other side is. If you divide it you get 80. Then you have to times it by 10 to convert it

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3 years ago

A graph with no breaks in it

Umnica [9.8K]

A graph that has no breaks in it is called a continuous data

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2 years ago

PLEASE HELP I WILL MARK YOU BRAINIEST PLEASE

cupoosta [38]

Answer:

Zeniab makes the most money by $0.25, and would make $2.50 more.

Step-by-step explanation:

Okay, the good news is, this problem is about finding how much you make in an hour.

Zainab makes $44 for 8 hours

and

Keziah makes $47.25 in 9 hours.

in each problem, we can set them up in an equation of

$44=8x

and

$47.25=9x

In the first equation, divide both sides by 8 to isolate the x.

that would be 44/8 = x which is $5.50 per hour for Zainab.

In the second equation, divide both sides by 9 to isolate the x.

That would be 47.25/9 = x which is $5.25 per hour for Keziah.

This means that Zainab would make more per hour, and to find the second part of the question for a 10 hour job,

(<u>You can multiply any number by 10 easily by moving each number up one place. Hundreds go to the thousands when you multiply by 10 as an example. In this problem, 5.50 times 10 would be $55.00 because the 5 behind the decimal would be moved up infront of the decimal)</u>

<u>Zainab would make $55 for 10 hours</u>

<u>Keziah would make $52.50 for 10 hours</u>

<u>Then, take the difference of those final totals, which is $2.50, or multiply $0.25 by 10 to get $2.50</u>

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2 years ago

15x^2 - 25 answer with a complete sentence

zubka84 [21]

Answer:

No, the following expression is not a difference of squares. Binomial can not be factored as the difference of two perfect squares. 3 is not a square.

Step-by-step explanation:

Factor

15x^2 - 25

(15x)^2(-5)^5

Divide by 3 and factor

5(3x^2-5)

"Theory:

A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)

Proof : (A+B) • (A-B) =

A2 - AB + BA - B2 =

A2 - AB + AB - B2 =

A2 - B2

Note : AB = BA is the commutative property of multiplication.

Note : - AB + AB equals zero and is therefore eliminated from the expression."

I put a picture to help u understand.

7 0

2 years ago

Which expression is equivalent to 7/16 ?<br> A. 7 − 16<br> B. 16 x 7<br> C. 7 ÷ 16<br> D. 16 ÷ 7

ValentinkaMS [17]

C. Is the correct answer

5 0

2 years ago

Read 2 more answers