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3 years ago

PLEASEEE SOMONEE HELP ASAP!!

Mathematics

1 answer:

Archy [21]3 years ago

6 0

Answer:

25 black keys

Step-by-step explanation:

Let the number of requires black keys = 'x'

White key : Black keys = 7 : 5

7 : 5 :: 35 : x

Product of extremes = product of means

7 *x = 35 * 5

x = $\frac{35*5}{7}$

x = 5 *5

x = 25

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What is 3/4 divided by 2/3

Sindrei [870]

Answer:

9/8 or 1.125

Step-by-step explanation:

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2 years ago

Mr. Suárez wants to paint his storage shed. He needs to calculate the lateral surface area of the shed so that he will know how

WINSTONCH [101]

Answer:

Lateral surface area of the storage shed = 336 ft²

Step-by-step explanation:

The picture is the complete question.

The shed is in the shape of a rectangular prism. The lateral surface area of the storage shed can be calculated below. The lateral area is the sides of the prism.

lateral area of a rectangular prism = 2h (l + w)

where

l = length

h = height

w = width

h = 8 ft

l = 14 ft

w = 7 ft

lateral area of a rectangular prism = 2h (l + w)

lateral area of a rectangular prism = 2 × 8 × (14 + 7)

lateral area of a rectangular prism = 16 (21)

lateral area of a rectangular prism = 336 ft²

Lateral surface area of the storage shed = 336 ft²

3 0

2 years ago

Jamel watched his older brother Robert lift weights. The bar alone had a mass of 20 kg. On the bar he had tow 11.4 kg weights, t

slavikrds [6]

All you do is add them all together...
20 + 11.4 + 11.4 + 4.5 + 4.5 + 0.45 + 0.45 + 0.45 + 0.45 = 53.6Kg
(note that 0.45 is 450g in Kg, When adding things such as weight or length you want to make sure that they are all in the same unit)

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3 years ago

1) -4/3 2) -3/4 3) 10/17 4)17/10

Blizzard [7]

Answer:

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2 years ago

What is 71.7x12= please help me

stich3 [128]

It is 860.4 because if you multiply it in the calculator you will get the answer. So you put in 71.1 times 12 and you get 860.4.

8 0

3 years ago