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Nookie1986 [14]
2 years ago
5

Katie memorized 40 multiplication facts last week. This week she memorized 56 multiplication facts. What is her percent of incre

ase for memorizing multiplication facts this week? o 22.4 % O 71.4 % O 40% O 140%​
Mathematics
1 answer:
Oksi-84 [34.3K]2 years ago
4 0

Answer:

40%

Step-by-step explanation:

:)

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The measure of an angle is 78°. What is the measure of a complementary angle?
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First you need to know the definition of a complementary angle. That means that two angles add up to 90 degrees, or a right angle.

To find an angle complementary to a 78 degree angle, you need to subtract 78 from 90. 

90 - 78 = 12
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Which one is the red ties that were drawed? 

25 * 10 = 250
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Above: Which ever one is the red one, that's what I think is the answer. Hopefully that helped! :) 
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Please help me with this question
Bezzdna [24]

Answer:

1.03

Step-by-step explanation:

To find the volume of a prism, find the area of the base and multiply it by the height.

The base is an octagon. The area is found A = 2(1+\sqrt{2})a^2. Substitute a = 0.5.

A = 2(1+\sqrt{2})(0.5^2)\\A = 4.828...(0.25)\\A = 1.21

The volume is 1.21*2.5 = 3.025.

However, there are three holes drilled out half way which each have volume 0.06.

The volume is found as V = πr²h. Substitute r = 0.125 which is half the diameter of 0.25. Since they go half way, the height is h = 1.25.

V = π(0.125)²(1.25) = 0.06.

Since there are 3, they equal 3*0.06 = 0.18.

Subtract this from the volume.

1.21 - 0.18 = 1.03

4 0
3 years ago
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