Answer:
4
Step-by-step explanation:
8(1)^2 -5(1) +1
8(1) -5(1) +1
8 -5 +1
4
D is not in correct scientific notation. To be correct, the answer would be 5.0 x 10^2
If this helped you, please list me as brainliest!
Answer:
Step-by-step explanation:
4
Take out a 2 to begin with.
2(25x^2 - 36) This is the difference of squares (inside the brackets). Factor.
2*(5x - 6)(5x + 6)
Answer:
(7,9)
Step-by-step explanation:
Since they are similar, you need to find the ratio of similarity (I made up the term, there is probably a correct one that I can’t remember).
If you divide 16/40, you’ll find that that ratio is 2.5. So then you just multiply 16 x 2.5. You’ll get 18.
18 is the length of the top of the trapezoid.
You set 18=2x+4 and solve it algebraically. Subtract 4 from both sides.
14=2x
Divide by 2 and x=7
(You can also check that the ratio is right by 16/18 is the same decimal value as 40/45. You’ll get .88888...)
