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3 years ago

What is the following sum?

Mathematics

2 answers:

almond37 [142]3 years ago

7 0

The answer is $2xy \sqrt{y} + 2xy^2 \sqrt{x}$

DaniilM [7]3 years ago

6 0

The answer is A :)

Edited to prevent anyone from feeling upset

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This helicopter has a rotor that moves at a rate of 600 spins per minute while flying. Which statement is supported by this info

jeka57 [31]

Answer: d. The helicopter rotor will spin 36,000 times in 1 hour

Step-by-step explanation:

Option A is wrong because in 40 minutes the rotor will spin:

= 40 * 600

= 24,000 times

Option B is wrong because we cannot know the number of times the rotor will spin before being lifted off of the ground with the details given.

Option C is wrong because in 3 hours the rotor will spin:

= 600 * 3 * 60 minutes

= 108,000 times

Option D is correct because in 1 hour the rotor will spin:

= 600 * 1 * 60 mins

= 36,000 times

5 0

3 years ago

Tell me the coordinates to graph it plz

Katarina [22]

Answer:

x=2, y=3

Step-by-step explanation:

7 0

3 years ago

I tried 8 and 1 and this is probably and easy question but can you pls help

Anarel [89]

Answer:

perimeter is the outside, so count around the outside for the answer, which is 18

the area is correct though so good job

good luck :)

5 0

3 years ago

572 divided by 90<br> someone please help

Natali5045456 [20]

Answer:

6.35555556

Step-by-step explanation:

I ain't never seen two pretty best friends

5 0

3 years ago

Read 2 more answers

20 points! Identify the solids that form the compos

Troyanec [42]

The composite shape is made up of a cube with a side length of 5 inches and a cylinder with a radius of 2 inches and a height of 4 inches.

The composite solid's surface area is 225.4 square inches.

Step-by-step explanation:

Step 1:

The given composite shape is made up of a cube with a side length of 5 inches and a cylinder with a radius of 2 inches and a height of 4 inches.

The surface area of the composite shape is given by summing the individual surface areas.

The composite shape's surface area = The cube's surface area + the cylinder's surface area.

Step 2:

Any cube's surface area is calculated by multiplying 6 with the square of the side length ( $a^2$ ).

The cube's surface area = $6a^2$ = $6(5^{2} )$ = $150$ square inches.

Step 3:

Any cylinder's surface area is calculated with the following formula;

The cylinder's surface area = $2 \pi r h+2 \pi r^{2}$ = $2 \pi (2) (4)+2 \pi (2)^{2}$ = $75.398$ square inches

Step 4:

The composite shape's surface area = The cube's surface area + the cylinder's surface area.

The composite shape's surface area = 150 + 75.398 = 225.398 square inches. Rounding this off, we get the area as 225.4 square inches.

3 0

3 years ago