I’m going to use the second one to explain
-8j + 14 = -2(4j-7)
So you distribute -2 into the parentheses on the right side, and you get -8j + 14, which is the same as the left side. Therefore, it is a true statement. It turns from a - to a + because it is two negative numbers multiplying by each other.
Answer:
false
Step-by-step explanation:
Triangles with obtuse angles also have acute angles
Coefficient of variation is the ratio of the standard deviation to the mean (average)
Coefficient of variation = (standard deviation/mean) × 100
![CV= \frac{30}{40}](https://tex.z-dn.net/?f=CV%3D%20%5Cfrac%7B30%7D%7B40%7D%20)
×
![100](https://tex.z-dn.net/?f=100)
=
Answer:
A.47.5 miles is 76
Step-by-step explanation:
in real life its like 76.44, but im rounding
Answer:
![2\sqrt{2}\ units](https://tex.z-dn.net/?f=2%5Csqrt%7B2%7D%5C%20units)
Step-by-step explanation:
we know that
In a 45-45-90 right triangle, the length of the two legs are equal
so
Applying the Pythagorean Theorem
![c^2=a^2+b^2](https://tex.z-dn.net/?f=c%5E2%3Da%5E2%2Bb%5E2)
where
c is the hypotenuse
a and b are the legs
we have
![a=2\ units\\b=2\ units](https://tex.z-dn.net/?f=a%3D2%5C%20units%5C%5Cb%3D2%5C%20units)
substitute
![c^2=2^2+2^2](https://tex.z-dn.net/?f=c%5E2%3D2%5E2%2B2%5E2)
![c^2=4+4](https://tex.z-dn.net/?f=c%5E2%3D4%2B4)
![c^2=8](https://tex.z-dn.net/?f=c%5E2%3D8)
![c=\sqrt{8}\ units](https://tex.z-dn.net/?f=c%3D%5Csqrt%7B8%7D%5C%20units)
simplify
![c=2\sqrt{2}\ units](https://tex.z-dn.net/?f=c%3D2%5Csqrt%7B2%7D%5C%20units)