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3 years ago

5

The cost for three copies of a book is $38.85. Estimate the cost for one book. Do you think your estimate is higher or lower? Ex

plain.

1 answer:

erica [24]3 years ago

6 0

If you round 38.85 to $39 then divide by 3 you'd get $13 each. This would be a little high since we rounded the 38.85 UP

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eimsori [14]

Answer:551.3212cm³

Step-by-step explanation:

Find the image attached

The volume is made up of a cone, cylinder and a hemisphere

Volume of the shape = Volume of cone + volume of cylinder + volume of hemisphere

Get the volume of the cone;

Volume of a cone Vc = 1/3πr²h

r is the base radius = 3.5cm

Height = 10cm

Vc = 1/3π(3.5)²(6)

Vc = 1/3π(12.25)(6)

Vc = 12.25 * 2π

Vc = 24.5π cm³

Get the volume of the cylinder;

Vcy = πr²h

r = 3.5cm

h = 10cm

Vcy = π(3.5)²(10)

Vcy = π(12.25)(10)

Vcy = π(122.5)

Vcy = 122.5π cm³

Get rhe volume of the hemisphere;

Volume of hemisphere = 2/3 πr³

r = 3.5cm

Vh = 2/3 π(3.5)³

Vh = 2/3π(42.875)

Vh = 28.58π cm³

Volume of the shape = VC + Vcy + Vh

Volume of the shape = 24.5π+122.5π+28.58π

Volume of the shape = 175.58π

<em>Volume of the shape = 551.3212cm³</em>

7 0

2 years ago

Garrett chooses to invest $1800 in a simple. The account earns 3% interest over 5 years which equation represents garrets invest

Alla [95]

The interest earned in 5 years would be $270

<u>Explanation:</u>

Given:

Principal, P = $1800

Rate of interest, r = 3%

Time, t = 5 years

Simple interest, I = ?

We know,

$I = \frac{p X r X t}{100}$

On substituting the value we get

$I = \frac{1800 X 3 X 5}{100} \\\\I = 270$

Therefore, interest earned in 5 years would be $270

6 0

3 years ago

Calvin is mixing colored gravel for the bottom of his fish tank. He mixes 12 pounds of blue gravel with 3 pounds of purple grave

Flura [38]

Answer:

B.4

Step-by-step explanation:

I did 12 divided by 3 = 4

8 0

2 years ago

Translate to an equation and solve: 4 is the product of 8 and g.<br>As see is 4/8

lord [1]

Answer:

sorry accidentally answered

Step-by-step explanation:

8 0

2 years ago

Write y=-3/4x+3 in standard form using integers

ArbitrLikvidat [17]

Answer:

12x+3 / 4x

Step-by-step explanation:

4 0

3 years ago