To find the mean add all the numbers and dived by the number of numbers. So 15 + 23 + 14 + 17 + 21 = 90 / 5 = 18. The mean is 18.
Answer:
(1,-1)
Step-by-step explanation:
y = -1
5x+7y = -2
Substitute the first equation into the second
5x + 7(-1) =-2
5x -7 = -2
Add 7 to each side
5x-7+7 = -2+7
5x= 5
Divide by 5
5x/5 = 5/5
x =1
(1,-1)
Answer: perimeter = 302m
area = 5544m^2
Step-by-step explanation:
perimeter = 2(l + b)
= 2(63 + 88)
= 2 x 151
= 302 m
Area = l x b
= 88 x 63
= 5544 m^2
Hope it helped u,
pls mark as the brainliest
^_^
Answer:
480 milligrams
Step-by-step explanation:
92 pounds → 320 milligrams
138 pounds → 320/92 x 138 = 480 milligrams
