Answer:
19
Step-by-step explanation:
A percentage is really just a decimal with the point moved over
a couple of places. So what you really need is just the decimal
form of 36/48.
As always, a fraction is just a short way to say "divided by", and
when you actually go ahead and do the division indicated by the
fraction, you get the decimal.
When you divide 36 by 48, the quotient is 0.75 .
To turn a decimal into a percentage, move the point 2 places
toward the right.
0.75 = 75%
Y=-1/4(-5)+7/4=3, so your answer would be B
We have two polynomials:
![\begin{gathered} p(x)=3x^2-4 \\ r(x)=2x^2-5x+1 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20p%28x%29%3D3x%5E2-4%20%5C%5C%20r%28x%29%3D2x%5E2-5x%2B1%20%5Cend%7Bgathered%7D)
We have to find -5*r*(2a). This can be written as:
![-5\cdot r\cdot(2a)=(-5\cdot2a)\cdot r=-10a\cdot r](https://tex.z-dn.net/?f=-5%5Ccdot%20r%5Ccdot%282a%29%3D%28-5%5Ccdot2a%29%5Ccdot%20r%3D-10a%5Ccdot%20r)
![\begin{gathered} -10a\cdot r(x)=-10a\cdot(2x^2-5x+1) \\ -10a\cdot2x^2-10a(-5x)-10a\cdot1 \\ -20ax^2+50ax-10a \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20-10a%5Ccdot%20r%28x%29%3D-10a%5Ccdot%282x%5E2-5x%2B1%29%20%5C%5C%20-10a%5Ccdot2x%5E2-10a%28-5x%29-10a%5Ccdot1%20%5C%5C%20-20ax%5E2%2B50ax-10a%20%5Cend%7Bgathered%7D)
Answer: -5r(2a) = -20ax^2+50ax-10a
Answer:
Step-by-step explanation:
Driving 55mph for two hours, he would travel 110 miles
Driving 70mph for one hour, he would travel 70 miles.
Driving 50mph for two hours, he would travel 100 miles.
Total Distance would be 280 miles.
Average speed would be (55+70+50)/3 = 58mph
If he drove 280 miles at 70mph, it would take 4 hours
Distance = Rate X Time