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3 years ago

What is the circumference of a circle that has a radius of 7 m?

Mathematics

1 answer:

Helen [10]3 years ago

5 0

Step-by-step explanation:

you you can use two formulas here either pi d or 2 pi r so when you use pie d which change the radius to diameter by multiplying by two so in this case we will multiply 7 by 2 to get 14 then use the formula so is 22/7 * 14 to get 44

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Raymond’s Bake Shop sold 26/1/2 dozen cupcakes on Saturday. On Friday,

Lelechka [254]

Answer:percent increase in cupcake sales from Friday to Saturday= 34%

Step-by-step explanation:

Step 1

Percent increase = Increase in cup cakes/ Old amount of cupcakes x100

Cupcakes sold on Friday = 19 3/4

Cupcakes sold on Saturday = 261/2

Increase in sales =26 1/2 -- 19 3/4 ( we will change to decmal for easy solving)

=26.5 - 19.75= 6.75 or 6 3/4

Step 2

Percentage increase = (6 3/4)/ (19 3/4) x100

Percentage increase = 6.75/19.75 x 100

Percentage increase =0.341 x100 = 34%

7 0

2 years ago

PLEASE HELP ASAP!! ( will give brainly ty so much)

Fynjy0 [20]

Answer:

1 to the -2 power

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

What is7/9 as a percentage

Kobotan [32]

I think it is 77% or 77.7`% ,but tell me if I'm wrong

8 0

3 years ago

Read 2 more answers

The photography club has 36 memebers, 16 girls and 20 boys. what is the ratio of girls to boys in the photography club?

exis [7]

Answer:

4:5

girls:boys

16:20

divide both by 4

4:5

8 0

1 year ago

Read 2 more answers

Wasted Water A faucet leaks 1 oz of water per minute. a) How many gallons of water are wasted in a year? (A gallon contains 128

dimaraw [331]

Answer:

a) 4106.25 gallons

b) $46

Step-by-step explanation:

We are given the following in the question:

Leakage rate of faucet = 1 oz per minute

Cost of water = $11.20 per 1000 gallons

1 gallon = 128 oz

a) water are wasted in a year

1 hour = 60 minutes

1 day = 24 hours

1 year = 365 days

$1\text{ year} = 365\times 24\times 60\text{ minutes}\\1\text{ year} = 525600\text{ minutes}$

Amount of water wasted =

$\text{Leakage rate}\times \text{Time}\\=1 \times 525600\\=525600\text{ oz}\\\\=\dfrac{525600}{128}\\\\=4106.25\text{ gallons}$

Thus, 4106.25 gallons of water is wasted every year.

b) additional money spent

$=\time{Cost}\times \text{Amount of water wasted}\\\\= \dfrac{11.20}{1000}\times 4106.25\\\\=45.99\$ \approx 46\$$

Thus, approximately $46 is the additional money spent on water bill.

4 0

2 years ago