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2 years ago

In a project there are 560hrs

Mathematics

1 answer:

Ivahew [28]2 years ago

6 0

Answer:

560hrs

Step-by-step explanation:

1day=24hrs

560hrs=(560÷24)days

=23.333days

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2r+2s=50 Please look at the picture

lidiya [134]

2r + 2s = 50

2r - s = 17

-----------subtract

3s = 33

s = 11

2r - s = 17

2r - 11 = 17

2r = 28

r = 14

so r = 14 and s = 11

answer is C. r = 14, s = 11

4 0

2 years ago

The two spheres above have the same center one has a radius of 2 cm and the other one has a radius of 3 cm approximately how muc

Paladinen [302]

Answer:

79.6 cm^3

Step-by-step explanation:

The formula for the volume of a sphere is V = 4/3 πr³.

sphere A radius 2 cm so r[A] = 2 cm

sphere B radius 3 cm so r[B] = 3 cm

distance between the surfaces of the 2 spheres is 1 cm

To find volume of each sphere and the difference in volume:

pi r^2 * r - (1/3) pi r^2 * r = (2/3) pi r^3

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3 years ago

HELP match the function with its inverse

Gre4nikov [31]

Answer:

1st row 3 down

Step-by-step explanation:

7 0

2 years ago

A regular tube of toothpaste costs $2.50 for 3.2 ounces. A travel size tube costs $1.00 for 1.2 ounces. Compare the prices and w

Len [333]

Answer:

The travel size costs 6 % as much as the regular size. Thus the regular size would be more economical and thus a better buy

Step-by-step explanation:

step 1

Find out the unit rate of a regular tube of toothpaste

we know that

To find out the unit rate, divide the total cost by the total weight

$\frac{2.50}{3.2}=\$0.78\ per\ ounce$

step 2

Find out the unit rate of a travel size tube of toothpaste

we know that

To find out the unit rate, divide the total cost by the total weight

$\frac{1.00}{1.2}=\$0.83\ per\ ounce$

step 3

Find out the percent of increase

we have that

The unit rate $\$0.83\ per\ ounce$ represent the 100%

so by proportion

Find out what percentage represent the difference ($0.83-$0.78=$0.05 per ounce)

$\frac{0.83}{100\%}=\frac{0.05}{x}\\\\x=100(0.05)/0.83\\\\x=6\%$

therefore

The travel size costs 6 % as much as the regular size. Thus the regular size would be more economical and thus a better buy

6 0

3 years ago

HELP WORTH 99 POINTS IM SO CONFUSED.

Vadim26 [7]

Answer:

Area of Large Circle = 380.13

Area of Small Circle = 254.47

Area of Sidewalk = 125.66

Step-by-step explanation:

The side walk is just subtracting the smaller number from the bigger one.

The area is just Pi*r^2

7 0

3 years ago

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