U= -1
-9u+6u=-36+39
-3u=3
u=-1
Answer:
I get 17.
Step-by-step explanation:
Reduce the fraction:
3 ( 3 + 4 ) - 4
Add the numbers:
3 x 7 - 4
Multiply the numbers:
21 - 4
Subtract the numbers:
17
Step 1
Let n represent car and m represent motorcycles.
n + m = 50 ...................1
car has four wheels and motorcycle has two wheels
4n + 2m = 164 .............................. 2
Step 2
Solve equation 1 and 2 simultaneously.
from (1), make n subject of relation and substitute in equation 2.
n = 50 - m
Step 3
Substitute n in equation 2
4(50 - m) + 2m = 164
200 - 4m + 2m = 164
collect like terms
200 - 164 = 4m - 2m
36 = 2m
m = 36/2
m = 18
next find n
n = 50 - m
n = 50 - 18
n = 32
There are 32 cars and 18 motorcycles.
The numerator factors as (t-8)(t+4), so the whole thing is (t-8)(t+4)/(t-8). Now we can cancel the t-8 AS LONG as t isn't equal to 8, otherwise, we are canceling a zero from both numerator and denominator which is invalid. What is left is t+4.
So your choice was right.
Answer:
11.25
Step-by-step explanation:
Step 1:
4/5 = 9/x Proportion
Step 2:
4x = 45 Multiply
Step 3:
45 ÷ 4 Divide
Answer:
x = 11.25
Hope This Helps :)
