Answer:
When number of bricks is multiplied by 2, the length is multiplied by
B) 2
Step-by-step explanation:
Number of bricks is two times the length of the wall
i.e. Number of bricks= 2×Length of the wall
When the number of bricks is multiplied by 2, the length is also multiplied by 2
since, when number of bricks=6 then, length of wall=3
and when number of bricks=2×6=12 then, length of wall=2×3=6
Hence, when number of bricks is multiplied by 2, the length is multiplied by
B) 2
Answer: See explanation
Step-by-step explanation:
a. 19 > x + 4
Collect like terms
= 19 - 4 > x
= 15 > x
= x < 15
b. 5x > 4x - 9
Collect like terms
5x - 4x> -9
x > -9
Answer:
(x, y) = (4, 3)
Step-by-step explanation:
The second equation gives an expression for y that can be substituted into the first equation.
... 2x -3(x -1) = -1 . . . . put x-1 where y was
... -x +3 = -1 . . . . . . . simplify
... 4 = x . . . . . . . . . . . add x+1
Using that second equation, we can find y to be ...
... y = 4 -1 = 3
The solution is (x, y) = (4, 3).
