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Zepler [3.9K]
3 years ago
9

What are the circumference and area of a circle with radius 7in. Round to the nearest tenth.

Mathematics
1 answer:
Natalka [10]3 years ago
4 0

Circumference is 40 in and area is 150 in²

Step-by-step explanation:

  • Step 1: Find the circumference of the circle when radius = 7 in

Circumference = 2πr = 2 × 22/7 × 7 = 44 in ≈ 40 in

  • Step 2: Find the area of the circle.

Area = πr² = 22/7 × 7² = 154 in² ≈ 150 in²

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Mike makes 4 dozen cookies. He brings 75% of them for a party at his school. How many did he bring?
baherus [9]

Answer:

He brought 3 dozen cookies

She ate \frac{2}{5} of the bag of Doritos

She read 25 books

Step-by-step explanation:

∵ Mike makes 4 dozen cookies

∵ He brings 75% of them for a party at his school

- Multiply 75% by 4

∵ 75% = \frac{75}{100}=\frac{3}{4}

∴ He brought = \frac{3}{4} × 4

∴ He brought = 3

He brought 3 dozen cookies

∵ Sam bought a bag of Doritos

∵ She ate only 40% of them

∵ 40% = \frac{40}{100}=\frac{2}{5}

∴ She ate = \frac{2}{5} × 1

∴ She ate = \frac{2}{5}

She ate  \frac{2}{5} of the bag of Doritos

∵ Jamie took 50 books from the library

∵ She only read half of her whole stack

- Multiply half by 50

∴ She read = \frac{1}{2} × 50

∴ She read = 25

She read 25 books

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3 years ago
At a perfume factory, fragrance designers are making Green Blossom perfume by mixing New Grass fragrance with 3/4 times as much
sveta [45]
You would have to find this out by multiplying the reciprocal of 3/4 which is 4/3 to 3/4 and one to get your answer that is 1
 
7 0
3 years ago
Daniel can by a particular brand of juice in a 6 ounce bottle or a 10 ounce bottle the juice in a 10 ounce bottle contains 150 c
olasank [31]

Answer: There are 90 calories in a 6-ounce bottle.

Step-by-step explanation:

We assume that the quantity of juice in the bottle is directly proportional to the number of calories it contains.

Given: 10 ounces of juice has 150 calories.

i.e. 1 ounce of juice has \dfrac{150}{10} calories.

i.e. 1 ounce of juice has 15 calories.

Now, In 6 ounce of juice, the number if calories = 15 x 6 = 90 calories

Hence, there are 90 calories in a 6-ounce bottle.

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3 years ago
Please help, will give brainiest IF correct !! 40 points
erastova [34]

Answer:

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Step-by-step explanation:

5 0
2 years ago
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What is the value of the expression below when y=8 2y+7
Gala2k [10]

Answer:

23

Step-by-step explanation:

if y=8 then you plug it inti the equation

2(8)+7

16+7=23

3 0
3 years ago
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