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3 years ago

Evaluate 8 − 12 ÷ 2 + 3. 1 −1 4 5

Mathematics

2 answers:

Anvisha [2.4K]3 years ago

7 0

According to the order of operations, multiplication and division are performed before addition and subtraction.

... 8 - 12 ÷ 2 + 3

... = 8 - 6 + 3 . . . . . . 12÷2 = 6

... = 2 + 3 . . . . . . . . . 8-6 = 2

... = 5

Leokris [45]3 years ago

6 0

Answer:-13

Step-by-step explanation:

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2 years ago

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3 years ago

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The equation y = 5.5x represents a proportional relationship What is the constant of proportionality?

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1.John has a sink that is shaped like a half-sphere. The sink has a volume of 1072 in. One day, his sink

Vlad [161]

Answer:

$\large\boxed{\large\boxed{85cups}}$

Explanation:

1. Volume of a cup

The shape of the cup is a cylinder. The volume of a cylinder is:

$\text{Volume of a cylinder}=\pi \times (radius)^2\times height$

The diameter fo the cup is half the diameter: 2in/2 = 1in.

Substitute radius = 1 in, and height = 4 in in the formula for the volume of a cylinder:

$\text{Volume of the cup}=\pi \times (1in)^2\times 4in\approx 12.57in^3$

2. Volume of the sink:

The volume of the sink is 1072in³ (note the units is in³ and not in).

3. Divide the volume of the sink by the volume of the cup.

This gives the number of cups that contain a volume equal to the volume of the sink:

$\dfrac{1072in^3}{12.57in^3}=85.3cups\approx 85cups$

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3 years ago

A shipping container is in the shape of a right rectangular prism with a length of 13

Lilit [14]

Answer:

371 pounds

Step-by-step explanation:

First you find how much space is in the container

length is 13

width is 15

height is 10

2 * (15 * 13 + 10 * 13 + 10 * 15)= 950

The total space in the container is 950

Then multiply it by 0.39 to find the weight

950 * 0.39 = 370.5

Round to the nearest pound

.5 rounded is rounded to a whole number

371 pounds

8 0

3 years ago