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2 years ago

How Do I solve this!

Mathematics

1 answer:

motikmotik2 years ago

5 0

Answer:

1380 in²

Step-by-step explanation:

The lateral surface is the sum of the areas of all the sides, or 'faces'.

The bases (the top and bottom) are not included.

This is a prism with triangles for bases (at each end). The sides are rectangles.

Add up the areas of the rectangles.

300 + 480 + 600 = 1380

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1,4,9,16 and 25 explain why these numbers sometimes are called perfect squares

sergiy2304 [10]

A number multiplied by itself equals a perfect square therefore:
2×2=4
3×3=9
4×4=16
5×5=25

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2 years ago

10 times as much as 10 is

elena55 [62]

10 time as much as ten is basically 10*10

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2 years ago

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Last year, Frank's salary was $75,000. He just received a 4% salary increase. What is his new salary?

LiRa [457]

Answer:

$78,000

Step-by-step explanation:

75,000 * 4% is 3000

3000+ 75000

78000

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8 0

1 year ago

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A cylinder has diameter of 4ft and a height of 9ft. Explain whether halving the diameter has the same effect on the surface area

elena55 [62]

Answer:

See Below

Step-by-step explanation:

The surface area of cylinder is given by the formula:

$SA=2\pi r^2 + 2\pi r h$

Where

r is radius ( diameter is 4, so radius is 4/2 = 2)

h is height ( h = 9)

Lets find original surface are:

$SA=2\pi r^2 + 2\pi r h\\SA=2\pi (2)^2 + 2\pi (2) (9)\\SA=8\pi +36\pi\\SA=44\pi$

Halving diameter:

diameter would be 4/2 = 2, so radius would be 2/2 = 1

So, SA would be:

$SA=2\pi r^2 + 2\pi r h\\SA=2\pi (1)^2 + 2\pi (1) (9)\\SA=2\pi +18\pi\\SA=20\pi$

Halving height:

Height is 9, halving would make it 9/2 = 4.5

Now, calculating new SA:

$SA=2\pi r^2 + 2\pi r h\\SA=2\pi (2)^2 + 2\pi (2) (4.5)\\SA=8\pi + 18\pi\\SA= 26\pi$

Original SA is $44\pi$ ,

Halving diameter makes it $20\pi$

Halving height makes it $26\pi$

So, halving diameter does not have same effect as halving height.

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2 years ago

The ordered pairs

Paul [167]

Answer:

Step-by-step explanation:

Slope of the line through (0,3) and (2,5) = (5-3)/(2-0) = 1.

Equation of line: y = x+3

When x=3, y=6

(3,n) = (3,6)

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2 years ago