Answer:
c divided by 8
Step-by-step explanation:
Multiply the first equation by 3 and the second equation by 2:
Subtract the two equation to get rid of the x variable:
Use the value of y to determine the value of x: for example, using the first equation we have
Answer:
c,d
Step-by-step explanation:
factorise it
x + 4 = 0 ⇒ x1 = −4
x − 2 = 0 ⇒ x2 = 2
Answer:
f(5) = -7
Step-by-step explanation:
If f(x) = -3x + 8, find f(5)
Just plug in x = 5 into the function
f(5) = -3(5) + 8
f(5) = -15 + 8
f(5) = -7
When you set up equations like this, look at the units for help. They cancel out during division and multiplication like numbers to give desired quantities. Rates can be reversed if need be (3 meters/sec or 1/3 sec/meter).
time × (distance / time) = distance
See.. time/time = 1; leaving distance
Subtract the rate of the opposing walkway...
t × (3 m/s - 1 m/s) = d
2t = d
Answer is then A.
