Answer:
x=-9
Step-by-step explanation:
distribute 4 into the parentheses
8x+36=-44+8
add -44+8
and u get 8x+36=-36
subtract the 36 on both sides and leave u with
8x=-72
divide 8 on both sides
and ur answer is -9
i dont think this make sense but hope this helps
D) increase the thrust force and increase the mass of the rocket.
Answer:

Step-by-step explanation:
we have

Adds 16 both sides


The top question is B. 30, because you have to set 7y-30 equal to 4y+60 since both lengths are the same.
Let the number of apples be x and that of pears be y, then:
0.64x + 0.45y = 5.26 . . . (1)
0.32x + 0.39y = 3.62 . . . (2)
(2) x 2 => 0.64x + 0.78y = 7.24 . . . (3)
(1) - (3) => -0.33y = -1.98
y = -1.98 / -0.33 = 6
From (2), 0.32x + 0.39(6) = 3.62
0.32x = 3.62 - 2.34 = 1.28
x = 1.28 / 0.32 = 4
Therefore, he bought 4 apples and 6 pears.