Answer:
Mean = sum of elements/number of elements = (9 + 8 + 12 + 6 + 10)/5 = 9
Hope this helps!
:)
Answer:
9 and -4
Step-by-step explanation:
change the word form to math form so now
x² - 36 = 5x <u>This look like a factoring problem, so we put it equal to 0</u>
x² - 5x - 36 = 0 <u>Now factor</u>
(x - 9) (x + 4) <u>We have to find 2 numbers that give -36 when we multiply and -5x when we add</u>
x - 9 = 0
x = 9
x + 4 = 0
x = -4
you can check by plugin the x value to actual equation.
Answer:
151
Step-by-step explanation:
114+131= 272 376-272=104
Answer:
x/2+2xv/5=9
Step-by-step explanation:
Answer:
120
Step-by-step explanation:
Let g = number of girls.
(2/3)g is 2/3 the number of girls
(2/3)g + 35 is 35 more than 2/3 the number of girls. This is the number of boys.
(2/3)g + 35 = 115
(2/3)g = 80
(3/2)(2/3)g = 80(3/2)
g = 120
