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Allushta [10]
3 years ago
11

When Marla rounded 19.95 to the nearest tenth, she found the number changed to 20.is this correct

Mathematics
1 answer:
dexar [7]3 years ago
4 0
Yes, Marla is correct.
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3.
Sati [7]

Answer:

B

Step-by-step explanation:

(5, -1) and (-5, 2)

y=-3/10x+1/2

-1= 3/10 (5) + 1/2

-1 = -15/10 + 1/2

-1 = -1.5 + 0.5

-1 =-1

4 0
3 years ago
The length of a rectangle is 9” greater than the width. The area is 36”2. Find the dimensions
Ymorist [56]

Answer:

Step-by-step explanation:

L = W+9

area = LW = 36

(W+9)W = 36

W²+9W-36 = 0

W = -12, 3

-12 is an extraneous solution, so W = 3 inches

L = W+9 = 12 inches

7 0
3 years ago
Andy borrows $3890 over 4 years. What was the rate per annum of the loan if he paid back $5908?
lesya [120]

Answer:

The formula to get the rate R would be:

principal x (1+R)^time = (principle + interest)

=> 3890 x (1 + R)^4 = 5908

=> (1 + R)^4 = 5908/3890

=> (1 + R)^4 = 1.5188

=> 1 + R = 1.11

=> R = 1.11 - 1 = 0.11 = 11%

Hope this helps!

:)

5 0
3 years ago
If a sphere and a cone have the same radius and height how is the volume of a sphere related to the volume of a cone?
lorasvet [3.4K]

Answer:

The volume of the silo is about 142.3 cubic meters. Try It! The volume of a sphere is twice the volume of a cone that has the same circular base and height. The formula for the volume of a sphere with radius r is V= r3.

Step-by-step explanation:

Notice that if a cone and a sphere have equal radius, and if the cone has a height equal to its radius, then the cone will fill the sphere exactly four times. This means that the volume of the sphere is $4 times the volume of the cone.

4 0
3 years ago
Solve the volume for the triangular prism
NeTakaya

Answer:

9.5 cubic units

Step-by-step explanation:

You need to multiply everything together and divide by 2.

5 x 2 x 1.9/2 = v

19/2 = v

9.5 cubic units

8 0
3 years ago
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