Answer:
x^2-49
Step-by-step explanation:
when u multiply the numbers in parenthesis u get 49-7x+7x-x^2 and when u simplify that u get x^2-49
Answer:
c because it is slower than 2 gallons per minute it is 1 gallon per 2 minutes. hope this helps:)
Answer:
x=8, y=25. As a point it's (8,25)
Step-by-step explanation:
here is the system:
y=x+17
y=3x+1
notice how both of the equations equal y. Therefore, we can substitute one expression as y in the other expression. (It'll equal y=y, which is a true statement)
so it'll be:
3x+1=x+17
subtract 1 from both sides
3x=x+16
subtract x from both sides
2x=16
divide by 2
x=8
now, substitute 8 as x into one of the equations and solve for y
let's take the first one for example
y=8+17
y=25
so the answer is x=8, y=25. As a point it's (8,25)
Hope this helps!
Answer:


Step-by-step explanation:
Given the matrices


Calculating AB:

Multiply the rows of the first matrix by the columns of the second matrix


Hence,

Therefore,


Answer:
3.8s
Step-by-step explanation:
Solve for h=0, you will get t=3.75