Answer:
y=10
Step-by-step explanation:
8(7-y) =-24
WE APPLY DISTRIBUTIVE PROPERTY:
8*7 -8*y =-24
56 -8y=-24
56+24=8y
80 = 8y
y=80/8
y=10
Answer:
256
Step-by-step explanation:
Can i have brainliest pls
Answer:
The skid distance to be used is 54 feet.
Step-by-step explanation:
Given:
Four skid marks on the highway.
in feet.
We have to find the skid distance.
The skid distance that will be used to further calculate the skid speed is actually the mean skid distance.
Mean skid distance (m) :
⇒ 
⇒ 
⇒ 
⇒ 
feet.
So the skid distance to be used is 54 feet.
To solve this equation (correct me if i'm wrong), you could first multiply the bottom equation by 3, to get 15y. After that, we get -4x-15y=-17 and -3x + 15y=-39, and if we add the 2 equations up, on top of each other, we get -7x=-56, and we can conclude that x=8, and with substitution (-32 - 15y = -17), we know that y=(-1)
Here's what I mean by on-top
-4x-15y=-17
-3x + 15y=-39
-7x=-56
You can set up an equation such as 300=100+8x where x is equal to the number of days gone by since birth. The answer would be 25 days.
