Answer:
7x^2 (the first choice)
Step-by-step explanation:
7x^2
4x+3x = 7x
(4+3)x = 7x
7x
All are 7x except for the first one which is 7x^2
80 would be your answer for this question
Answer:
(7,6)
Step-by-step explanation:
A forumula you can use is
y2 - y1
---------
x2 - x1
So take 5 - (-2) which equals 7
Then take 7 - 1 which equals 6
so you get 7/6 or (7,6)
Answer:
45 mph
251 ft
Step-by-step explanation:
a.)
Answer: 45 mph
b.)
Answer: 251 ft
V (cube)=9³=729 cm³
V (cone)=1/3*π*R²*H= 1/3*π*3²*9=84.8 cm³
V (metal)= 729-84.8=644.2 cm³