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stepladder [879]
2 years ago
8

Which expression is equivalent

Mathematics
1 answer:
larisa [96]2 years ago
8 0

No answer is correct. I’m sure

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Which mental math strategy can be used to find the exact sum of 873 and 47? Check all that apply?
Vaselesa [24]

873 + 40 + 7 or 870 + 40 + 3 + 7

6 0
2 years ago
The following histogram presents the amounts of silver (in parts per million) found in a sample of rocks. One rectangle from the
gladu [14]

Answer:

  • <u><em>The height of the missing rectangle is 0.15</em></u>

Explanation:

The image attached has the mentioned <em>histogram</em>.

Such histogram presents the relative frequencies for the clases [0,1], [1,2],[2,3], [4,5], and [5,6] Silver in ppm.

Only the rectangle for the class [3,4] is missing.

The height of each rectangle is the relative frequency of the corresponding class.

The relative frequencies must add 1, because each relative frequency is calculated dividing the absolute class frequency by the total number in the sample; hence, the sum of all the relative frequencies is equal to the total absolute class frequencies divided by the same number, yielding 1.

In consequence, you can sum all the known relative frequencies and subtract from 1 to get the missing relative frequency, which is the height of the missing rectangle.

<u>1. Sum of the known relative frequencies</u>:

  • 0.2 + 0.3 + 0.15 + 0.1 + 0.1 = 0.85

<u>2. Missing frequency</u>:

  • 1 - 0.85 = 0.15

<u>3. Conclusion</u>:

  • The height of the missing rectangle is 0.15

4 0
2 years ago
Please help!!!
Kipish [7]
F - 12 = -35
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2 years ago
How can you decide which variable to solve for first when you are solving a linear system by substitution
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Holly works in a stable. She's throwing straw into a stall that's 12 feet long by 8 feet wide. If she throws 12 cubic feet of st
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Should take 8 minutes. I'm not totally sure; Pretty sure somebody else will get this right if I'm not.
5 0
3 years ago
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