The mean of four numbers is 7. Three of the numbers are 5,7 and 7. What is the fourth number?
2 answers:
Answer:
9 is the fourth number.
Step-by-step explanation:
9 is the fourth number because 7(mean) x 4(amount of numbers) = 28 and 7 plus 7 plus 5 plus 9 equals 28 so when you divide you get 7.
Answer:
fourth number is 9
Step-by-step explanation:
let 'x' equal the fourth number
(5+7+7+x)/4 = 7
cross-multiply to get:
19 + x = 28
x = 9
You might be interested in
Point slope form is y-(-4) = 1/2(x-(-2)
y+4 =1/2 (x+2)
now the standard form 2y+8=x+2
so -x+2y=-6 is the equation for line p in standard form
Answer:
37.5 hrs
Step-by-step explanation:
You do cross multiplication hours on top and weeks on the bottom.
Step-by-step explanation:
...............
......
Answer:
d
Step-by-step explanation:
Answer:
answer iss ( -2 , 0 )
Step-by-step explanation:
