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Greeley [361]
4 years ago
7

What is the area of a rectangle that measures 9cm by 81mm?

Mathematics
1 answer:
RUDIKE [14]4 years ago
3 0
Well, a Centimeter is 10 times bigger than a Milimeter.

So we can convert 9cm by multiplying it by 10

9 × 10= 90mm

SInce we know the length and width of the rectangle, we can now find the area of it, or "the space inside".

Area = length × width

Area = 90mm × 81mm
Area = 7290mm
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Which company’s tower holds the most water?
GuDViN [60]

Answer: First Option

Step-by-step explanation:

The formula to calculate the volume of a cylinder is:

V = \pi(\frac{d}{2})^2*h

Where d is the diameter of the cylinder and h is the height.

Notice that the term d is squared. This means that to increase the volume of a cylinder it is more efficient to increase its diameter as well. Therefore, look for the cylinder with the largest diameter among the options.

The first cylinder is 90 ft in diameter and 40 ft in height and its volume is

V = \pi(\frac{90}{2})^2*40

V=254469\ ft^3

You can verify that it is the tank that has the highest volume

8 0
3 years ago
SOMEONE HELP ME REALLY FAST !!!!
nadezda [96]

Answer:

just draw the same rectangle as on the left on the right

Step-by-step explanation:

but when finding area instead of unitsx2 use unitsx4

6 0
3 years ago
Please look at the picture !!!!!!!!!!!
aev [14]

Answer:

Quadratic

Step-by-step explanation:

It's not linear because the speed of the penny is not<u> </u>constant.

It is not exponential because the speed does not continuously increase at a faster rate.

It is Quadratic because the penny will increase speed as you throw it up into the air. Once it reaches its "high point" it's speed hits 0, which is the origin of the quadratic equation. Then the speed increases faster and faster as it falls.  

7 0
3 years ago
Andrea is buying some new shirts and sweaters. She is able to buy 3 shirts and 2 sweaters for $114, or she is able to buy 2 shir
OLEGan [10]

Answer:

The cost of a shirt is $16 and the cost of a sweater is $33

Step-by-step explanation:

Let

x -----> the cost of a shirt

y -----> the cost of a sweater

we know that

3x+2y=114 -----> equation A

2x+4y=164----> equation B

Solve the system by graphing

Remember that the solution of the system is the intersection point both graphs

The solution is the point (16,33)

see the attached figure

therefore

The cost of a shirt is $16 and the cost of a sweater is $33

4 0
3 years ago
Read 2 more answers
I need to know where it says classify y and z
Contact [7]
It’s located right at the top hope this help you
3 0
3 years ago
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