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Murrr4er [49]
3 years ago
13

Which expression is equivalent to 63.56 + (–81.47)?

Mathematics
2 answers:
abruzzese [7]3 years ago
7 0

Answer:

Step-by-step explanation:    63.56 - 81.47 ( second option )

did the test

Nuetrik [128]3 years ago
6 0

Answer:

could you add a picture?

Step-by-step explanation:

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9 3/4. Is the answer
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It is known that the distance in metres through which a body falls freely varies directly as the square of the time taken. If a
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Answer:

125 meters

Step-by-step explanation:

Let distance = d and time is t

Using the variation;

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So let’s us get k

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So for 5 seconds, the distance would be;

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What is the domain of the following function represented by ordered pairs?
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Answer:

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An environmental science teacher at a high school with a large population of students wanted to estimate the proportion of stude
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Answer:

60 students

Step-by-step explanation:

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p\pm z*\sqrt{\frac{p*(1-p)}{n} }

Where 'p' is the proportion of students who responded 'yes', 'z' is the z-score for a 95% confidence interval (which is known to be 1.960), and 'n' is the number of students in the sample.

If the confidence interval is from 0.584 to 0.816, then:

p=\frac{0.584+0.816}{2}=0.7 \\0.816-0.584=2*(1.96*\sqrt{\frac{p*(1-p)}{n}}) \\0.116=1.96*\sqrt{\frac{0.7*(1-0.7)}{n}}\\n=16.8966^2*(0.7*0.3)\\n=60\ students

60 students were in the sample.

8 0
3 years ago
Evaluate the expression<br> 6a - 2b when a = 5, b=7
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6a - 2b

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= 30 - 14

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6 0
3 years ago
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