3 years ago

Evaluate the expression.

Mathematics

1 answer:

zysi [14]3 years ago

5 0

Answer:

work is shown and pictured

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Find the volume of the composite solid. Round your<br> anwser to the nearest hundredth.

Lelu [443]

Answer:

226.19 $cm^{3}$

Step-by-step explanation:

Vol. of cone = Bh/3 where B is the area of the base(circle) and h is the height of the cone.

r = 3 h = 3

V = $\frac{\pi *3^{2}*3 }{3}$ = 9π

Vol. of the cylinder = Bh where B is the base(circle) and h is the height of the cylinder.

r = 3 h = 10 - 3 = 7

V = $\pi *3^{2} * 7$ = 63π

Total volume = 9π + 63π = 72π = 72(3.1416....) = 226.19

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3 years ago

Round each number to the nearest tenth. 3.618

Fed [463]

Answer:

3.6

Step-by-step explanation:

The 6 is in the tenth place. Because the 1 is less than 5, it turns into 0.

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4 years ago

The Shinkansen, the fastest train in Japan, traveled 75 kilometers in 0.25 hours. What was its speed in kilometers per hour? 300

Otrada [13]

75 × 4 = 300

So, 300 kilometers per hour

8 0

3 years ago

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Simplify the following expression completely, where x

oksano4ka [1.4K]

Step-by-step explanation:

$x \sqrt{5x {y}^{4} } + \sqrt{405 {x}^{3} y {}^{4} } - \sqrt{80 {x}^{3} {y}^{4} }$

$x \sqrt{5xy {}^{4} } + 9 x\sqrt{5xy {}^{4} } - 4x \sqrt{5xy {}^{4} }$

$6x \sqrt{5xy {}^{4} }$

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3 years ago

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Esmeralda and Genevieve are both planting square gardens. Esmeralda's garden is 25 square feet and

notsponge [240]

Answer:

Genevieve's garden is 12 square feet and thus, has a smaller area than Esmeralda's

Step-by-step explanation:

Given:

Esmeralda's garden = 25 square feet

Genevieve's garden = 4 square yards

Convert Genevieve's units (yards) to feet

Yards to feet

1 yard = 3 feet

4 yards = 4 * 3 feet

4 yards = 12 feet

Genevieve's garden = 12 square feet

Genevieve's garden is 12 square feet and thus, has a smaller area than Esmeralda's

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3 years ago