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2 years ago

Pls help quickly I’ll give u brainlyist btw it’s 7th grade math

Mathematics

1 answer:

erica [24]2 years ago

3 0

Answer:

2 and 5

Step-by-step explanation:

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Find the volume of a cone that has radius = 2 1/2 and height = 5.

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Answer:

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2 years ago

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The volume of the cylinder is 220 cubic centimeters. The height is 7.9 centimeters. Find the radius of the cylinder. Use 3.14 fo

podryga [215]

Volume of cylinder= pi x (radius)2 x height

= 3.14 x (2)2 x 5

=62.8 cubic cm

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2 years ago

The sum of the digits of a two-digit number is 9. If the digits are reversed,the new number is 9 more than the original number.F

hodyreva [135]

Answer:

Step-by-step explanation:

Let the original number be xy where y is unit and x is tens hence original number is 10x+y When reversed, the new number is yz hence 10y+x

We know that the original number plus 9 is the reversed number hence

10x+y+9=10y+x

9y-9x=9 which when simplified we obtain that

y-x=1 equation 1

Originally, we are told that the sum of x and y is 9 hence

y+x=9 equation 2

Solving equation 1, it means y=x+1

Substituting the above into equation 2

x+1+x=9

2x=9-1

2x=8

x=8/2=4

Since y=x+1 then y=4+1=5

Therefore, the original number, xy is 45

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3 years ago

A coffee franchise is opening a new store. The company estimates that there is a 70% chance the store will have a profit of $50,

aivan3 [116]

Step-by-step explanation:

The expected value is the sum of each outcome times its probability.

E = (0.70)(50000) + (0.05)(0) + (0.25)(-3500)

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The store is expected to gain $34,125.

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2 years ago

In right-angled ∆ ABC, ∟B=90⁰. ∆ ABC is in the first and second quadrant on the graph paper. The coordinates of the points A and

Musya8 [376]

Answer:

The given coordinates of the points A and C of the right triangle ABC are (2, 5) and (-2, 3) respectively

The possible pairs of the coordinates of the point B are found as follows;

1) Draw a horizontal line from the point C to the right and a vertical line down from the point A to get the point B at (2, 3) which is the point of the perpendicular intersection of the two constructed lines above

2) Draw a vertical line from the point C upwards and a horizontal line to the left from the point A to get the point B at (-2, 5) which is the point of the perpendicular intersection of the two newly constructed lines here

Step-by-step explanation:

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2 years ago