Answer:
a) v = 0
b) b = 7 / 6
c) a = any number
Step-by-step explanation:
a) 7(2+5v)=3v+14
7 x 2 + 7 x 5v = 3v + 14 .... distributive
14 + 35v = 3v + 14
35v - 3v = 14 - 14
32v = 0
v = 0 ...... only v value can fit
b) -3 (3-6b)=6b+5
-9 + 18b = 6b + 5
18b - 6b = 5 + 9
12b = 14
b = 14 / 12 = 7 / 6
c) 2 (a-2)=2a-4
2a - 4 = 2a - 4
2a -4 + 4 = 2a -4 + 4
2a = 2a
a = a ........ a cab be any number
Answer:
(2,-2)
Step-by-step explanation:
-1(4x + 6y = -4)
4x + 3y = 2
-4x - 6y = 4
4x + 3y = 2
-3y=6
divide it by -3 to get y.
y=-2
4x + 3(-2) = 2
4x - 6 = 2
add 6 to both sides.
4x = 8
divide by 4 to get x.
x=2
(2,-2)
Hope this helps!
Answer:
224 Trains
Step-by-step explanation:
Im unsure if this is correct but I'll explain how i got the answer.
14/24 trains were full before, and so only 56% of trains were full.
Now we have 400 trains, and assuming that the 400 trains will also be 56% full, you multiply 400 and the decimal form of 56%
400x.56= 224
X y 4
16 2 4
16 x 2 x 4
16x 8
128
=128
The area of a square is the length of one side squared, so to find the length of a side, find the square root of the area. The square root of this notepad's area (2.25) is 1.5 inches, so that is the length of one side of the notepad.
