Answer:
(-1/2, 27/2)
Step-by-step explanation:
Midpoint formula: (x^1 +x^2/ 2, y^1 +y^2/ 2)
(-4 +3 /2, 12+15/ 2) -> (-1/2, 27/2)
Answer:
D. 8ab+12a-2b-3
Step-by-step explanation:
You are basically combining like terms
-(5y) - y = 18
-6y = 18
y = -3
x = 5(-3)
x = -15
(-15, -3)
5x + 4(-7x - 3) = -35
5x -28x -12 = -35
-23x = -23
x = 1
y = -7(1) - 3
y = -10
(1,-10)
Answer:
a = 7
Step-by-step explanation:
I think, what you need to do, is first understand how to find the mean of anything: It's quite simple, actually, just add up all the numbers, then divide that number by the number of numbers. So, let's put it in perspective:
10, 3, 4, a, 6, 9, 10
7 is the mean. 7 is the number of numbers.
If, to find the mean is: 10 + 3 + 4 + a + 6 + 9 + 10= 7a ÷ 7, then: 10 +3 + 4+ 6 + 9 +10= 42
42 plus what divided by 7 is the question now.
42 + a ÷ 7= 7
So, 7 times 7, that's 49 minus 42 and you've got your answer: 7
Answer:
Looks good to me!
Step-by-step explanation:
