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irga5000 [103]
3 years ago
13

compounds are pure substances. What other substances are considered pure substances? A: chemical reactions B: elements C: mixtur

es D: solutions
Mathematics
1 answer:
saul85 [17]3 years ago
8 0

Answer:

Step-by-step explanation:

B

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Answer:

0.95

(Don't have paper, because I accidentally threw away paper )

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Markiya deposited $500 in a savings account. The annual interest rate is 2%, and the interest is compounded monthly. Write a com
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On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 106 and a standard deviatio
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Answer:

Step-by-step explanation:

N(106,14²)

(calculated using excel, let me know if you were supposed to use a normal table) = 0.4715

85.34

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When she is outdoors, Tasha the dog, is tied to a stake in the center of a circular area of radius 24 feet. The angle between he
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Answer: the length of the arc from her dog house to the hydrant is 69 feet

Step-by-step explanation:

The formula for determining the length of an arc is expressed as

Length of arc = θ/360 × 2πr

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r represents the radius of the circle.

π is a constant whose value is 3.14

From the information given,

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θ = 165 degrees

Therefore,

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Length of arc = 69 feet rounded up to the nearest feet.

3 0
3 years ago
Dora says that of all the possible rectangles with the same area, the rectangle with the largest perimeter will have two side le
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Answer:

  maybe

Step-by-step explanation:

Dora is apparently assuming the dimensions are integers. In that case she is correct.

If the dimensions are unconstrained, the perimeter will be largest when a pair of opposite sides will be the smallest measure allowed.

For some perimeter P and side length x, the area is ...

  A = x(P/2 -x)

Conversely, the perimeter for a given area is ...

  P = 2(A/x +x)

This gets very large when x gets very small, so Dora is correct in saying that the side lengths that are as small as they can be will result in the largest perimeter. We have no way of telling if her assumption of integer side lengths is appropriate. If it is not, her statement makes no sense.

8 0
3 years ago
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