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Rudiy27
3 years ago
15

How many squares of all sizes are there in the 3 by 3 square shown next?

Mathematics
1 answer:
svet-max [94.6K]3 years ago
5 0
There are 9 unit squares, 4 2x2 squares, and 1 3x3 square, for a total of 14.
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7x-y=-10 (linear combination)<br> -7x+5y=-6
andreyandreev [35.5K]

(-2,-4) is the correct answer.

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3 years ago
Find the area of the composite figure in terms of the figure (use 3.14 for pi)​
svp [43]

Answer:

105.12 ft²

Step-by-step explanation:

Let's first find the area of the rectangle.

10\cdot8=80 ft², so the rectangle has an area of 80ft².

To find the area of the semi-circle, we find the area of a whole circle and divide by two.

The formula to find the area of a circle is \pi r^2. The radius is 4, as the diameter is 8.

3.14\cdot4^2

3.14\cdot16

50.24\div2=25.12

Add 80 and 25.12:

80+25.12=105.12

Hope this helped!

5 0
3 years ago
in class, matthew stated "i think that a negative is like an opposite. That is why multiplying a negative times a negative equal
sveticcg [70]
Yes and no. A negative number and it's opposite are 'integers.' Yes, a negative and a negative multiplied together give you a positive. The two negative signs cancel out making it positive. But no, a positive and a positive multiplied together do not give you a negative. When you subtract positive numbers you can get a negative, but not when multiplying. If you were to do a positive times a negative it would be negative because the positive can't cancel it out. Example: -3 · -3 = 9. [] 3 · 3 = 9. [] -3 · 3 = -9. Other than the positive number part, the statement is true about the negatives. I hope that helped!
8 0
3 years ago
Read 2 more answers
Discuss the differences between parametric and non-parametric tests?
lesya [120]
Nonparametric tests are also called distribution-free tests because they don't assume that your data follow a specific distribution. You may have heard that you should use nonparametric tests when your data don't meet the assumptions of the parametric test, especially the assumption about normally distributed data.
8 0
2 years ago
Twenty-seven less than twice a number is -1
11Alexandr11 [23.1K]

Answer: 13

Step-by-step explanation:

2x-27=-1

2x=26

X=13

5 0
3 years ago
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