3 years ago

Find the area of the semicircle (1/2 circle with a diameter of 10)

Mathematics

1 answer:

AveGali [126]3 years ago

4 0

Answer:

39.25 unit²

Step-by-step explanation:

Radius of circle = diameter/2 = 10/2 = 5

Area of a circle = πr²

Area of ½ circle = ½ πr² = ½ x (22/7) x 5²

Area = 39.25 unit^2

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Jorge has some dimes and quarters. He has 10 more dimes than quarters and the collection of coins is worth $2.40. How many dimes

PIT_PIT [208]

Answer:

14 dimes and 4 quarters

Step-by-step explanation:

x= number of dimes

y=number of quarters

x-10=y

0.10x+0.25y=2.40

substitute for y

0.10x+0.25(x-10)=2.40

0.35x-2.50=2.40

0.35x=4.90

x=14

y=4

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2 years ago

Evaluate the algebraic expression by using the distributive property: 7(7x+y)

11111nata11111 [884]

Answer:

Step-by-step explanation:

14x + 7y is the correct answer

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3 years ago

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A book with 650 pages has 3 pages with diagrams.

Mrac [35]

The pages that have diagrams is an illustration of proportions

0.46% pages have diagrams

<h3>How to determine the percentage</h3>

The given parameters are:

Total = 650 pages

Diagrams = 3 pages

The percentage of page that has diagram is then calculated as:

$Diagram\% = \frac{Diagrams}{Total} * 100\%$

So, we have:

$Diagram\% = \frac{3}{650} * 100\%$

Evaluate the product

$Diagram\% = \frac{300}{650} \%$

Divide

$Diagram\% = 0.46 \%$

Hence, 0.46% pages have diagrams

Read more about proportions at:

brainly.com/question/1781657

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2 years ago

One reading an Antarctic research station showed that the temperature was -35 degrees Celsius what is this temperature in degree

Musya8 [376]

It is very simple it would be positive but would remain 35

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3 years ago

2x+16=7+2x <br>how do you solve if the variable is the same on both sides of the equation

jeka94

First subtract the 7 from both sides and that would equal 2x+9=2x then subtract 2x and the answer is 9

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3 years ago

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