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ELEN [110]
3 years ago
9

Please help! This question is really confusing me!

Mathematics
1 answer:
zvonat [6]3 years ago
8 0

Answer:

The area is the square unit.

Let the scale factor is k.

The unit circle has area of π.

<u>Similar circle is k times the unit circle.</u>

  • r₂/ r₁ = k

<u>The ratio of areas is the square of the scale factor:</u>

  • A₂/A₁ = k²

<u>If the scale factor is r, then the area of the circle with radius of r is:</u>

  • A₂ = A₁k² = A₁r²

<u>Since A₁ = π, the area of A₂ is:</u>

  • A₂ = π*r² = πr²
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Harold took a total 8 quizzes over the course of 2 weeks. How many weeks of school will Harold have to attend this quarter befor
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Answer:

5

Step-by-step explanation:

8 quizzes / 2 weeks = 20 quizzes / x weeks

Cross multiply:

8x = 40

Divide:

x = 5

Harold will have to attend 5 weeks.

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3 years ago
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3 years ago
Simplify. (3x5+3x2−4x3+x−6)−(x3+4x4+2x2−10x) Enter your answer, in standard form, in the box.
Snezhnost [94]
All so have to do is make sure to convert the negatives and positives of the second group of values since there is a subtraction symbol that you have to distribute to that section.

This would turn the expression into
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Then combine like terms and line all the values in order from greatest exponent value to least to get 
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Hope this helped :)
5 0
3 years ago
Read 2 more answers
A city has a population of 2,549,786 people.
Hunter-Best [27]

Answer:

10^3

Step-by-step explanation:

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4 0
3 years ago
A grocery store sells avocados for $2.35 per pound how much would it cost to buy 7.4 pounds of avocados from this store
sergejj [24]

Answer: cost to buy 7.4 pounds of avocados from this store=$17.39

Step-by-step explanation:

Sale of avocados   per pound in the grocery= $2.35  

Sale of 7.4 pounds of avocados=  $2.35  x 7.4 pounds =$17.39

Therefore, the cost to buy 7.4 pounds of avocados from this store=$17.39

6 0
3 years ago
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