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AfilCa [17]
3 years ago
10

How do you estimate an area?

Mathematics
2 answers:
jeka943 years ago
8 0
Put the numbers into a way that you can easily answer in your head. 47*63 40*70
adell [148]3 years ago
4 0
You calculate an answer by multiplying each side by each other. hope this helps.
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What is the value of the 7 in 3 478000? Answer..............​
jolli1 [7]
3.478000 = the 7 is in the hundredths place
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Graph each figure with the given vertices and its image after the indicated glide reflection. : R(1, -4), S(6, -4), T(5, -1) Tra
Yuki888 [10]

Answer:

Step-by-step explanation:

7 0
3 years ago
In a room with 10 people, how many different handshakes are possible?
Ganezh [65]
45 handshakes are possible
7 0
3 years ago
Read 2 more answers
Consider a value to be significantly low if its z score less than or equal to minus−2 or consider a value to be significantly hi
den301095 [7]

Answer:

Test scores of 10.2 or lower are significantly low.

Test scores of 31 or higher are significantly high

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 20.6, \sigma = 5.2

Significantly low:

Z-scores of -2 or lower

So scores of X when Z = -2 or lower

Z = \frac{X - \mu}{\sigma}

-2 = \frac{X - 20.6}{5.2}

X - 20.6 = -2*5.2

X = 10.2

Test scores of 10.2 or lower are significantly low.

Significantly high:

Z-scores of 2 or higher

So scores of X when Z = 2 or higher

Z = \frac{X - \mu}{\sigma}

2 = \frac{X - 20.6}{5.2}

X - 20.6 = 2*5.2

X = 31

Test scores of 31 or higher are significantly high

6 0
3 years ago
For every 14 ice-cream cones you buy, you get 2 free. How many free ice-cream cones will you get if you buy 56 cones?
Ksenya-84 [330]
Ok so i just did 56/14 and got 4. So this means 14 goes into 56 4 times, so now i did 4 x 2 and got 8. So the answer is 8 free cones.

4 0
3 years ago
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