Answer:
-15a^2+20ab
Step-by-step explanation:
Given data
We are given the expression
(-3a + 4b) to be multiplied by 5a
hence we have
(-3a + 4b)*5a
open bracket
-15a^2+20ab
Hence the answer is
-15a^2+20ab
Y=mx+c since its at constant rate
at (30,2)
30=m2+c-----(1)
at(12,3)
12=m3+c-----(2)
by multiplying (2)by 2.5,
30=7.5m+2.5c-----(3)
by comparing (1) and (3)
2m+c=7.5m+2.5c
5.5m+1.5c=0
5.5m=-1.5c
m=-1.5/5.5c----(4)
sub 4 into 1,
-6/11c+c=30
c=66
m=-1.5/5.5*66=-18
Equation : y=-18x+66
u can try substituting back 2min and 3 mins to verify it works
Answer:
The slope is 3, the y- intercept is -2, and the equation is y= 3x - 2
Answer:
(- 1, 5.5 )
Step-by-step explanation:
Given (x₁, y₁ ) and (x₂, y₂ ) then the midpoint is
[ 0.5(x₁ + x₂), 0.5(y₁ + y₂ ) ]
Here (x₁, y₁ ) = (- 4, 6) and (x₂, y₂ ) = (2, 5 ), thus
midpoint = [ 0.5(- 4 + 2), 0.5(6 + 5) ] = [ 0.5(- 2), 0.5(11) ] = (- 1, 5.5 )
Answer:
b 5/3
Step-by-step explanation:
becouse 5/3 pound is not a unit a unit would have more like c d and a
so b is right
