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∑(-11+4i), from i=8 to 16

Sum(i=8)^16(4 i-11) = 333

-90/10

divide by 10 (top and bottom)

-9/1 = -9

a²+b²=c²

A = [(side a + side b) / 2] h

-12

-12

Basically all you have to do is divide the top, or numerator, of the fraction, by the bottom ,or nomination. For example, say you need to convert 3/4 into a percent. Well 3 divided by 4 is 0.75. We can see that that is not a percent, so last thing you need to do is move the decimal point over to the right 2 spaces. At the end, 3/4 as a fraction is 75%.

Hope this all helps(:

n+7+n+2n-12+3n+4  Solve for n? or symplfy?

commutative property of addition states that you can rearrage the problem

n+n+3n+2n-12+7+4

Combine like terms 

7n-23 If you were symplying you would stop here.

If not you solve for n

7n-23=0

7n=23

n=23/7

hope this helps!! :D

thank you!!

El caballo se llamaba Viernes

\(3\sqrt{2}*\sqrt{8}=12\)

The square root of -1 is known as 'i', which is short for imaginary, since you actually can't take the square root of -1 in normal mathematics. But, with i, higher-level mathematics is able to use it to complete some equations. Therefore, since the square root of -4 is the same thing as the square root of (4 * -1), since the square root of 4 is 2, and the square root of -1 is i, the square root of -4 is 2i, which is an imaginary number. (An imaginary number is any number that is a multiple of i ).

Given: n + 7 + n + 2n - 12 + 3n + 4

Step 1: Rewrite the equation with like terms next to each other

3n + 2n + n + n - 12 + 7 + 4

Step 2: Combine like terms

3n + 2n + n + n = 7n

7 + 4 - 12 = -1

The answer is 7n - 1

-24/8 = -3

the correct answer is 0 because when you times something by 0 the answer is always 0 until you add or subtract from it

2.666666666667 or just 2 2/3

2.66666666666666667

\(8\frac{1}{2}+4\frac{5}{8}+5\frac{4}{6}+9\frac{1}{3}=\frac{225}{8}\)