X-intercepts are found by factoring. Use the quadratic formula on the first since it's in standard form and you find that your x values are in fact -3 and 7. For the second one, use the Zero Product Property that says that x - 3 = 0 or x + 7 = 0. Therefore, x = 3 and -7. Signs are wrong. So not the second one. As for the third one, if you factor out a 3, your polynomial is exactly the same as the first one which did give us the desired x values. So the third one checks out. If you FOIL out the first one and then apply the quadratic formula you do get x = 3 and -7. So the fourth one checks out too. For the last one, putting it into the quadratic formula gives you x values of 3 and -7, so no to that one. Summary: 1st, 3rd, 4th have zeros of -3 and 7; 2nd and 5th do not.
Answer:
18
Step-by-step explanation:
(must round down for population)
Each answer possibility is a coordinate and represents a variety of an (x,y) point. The equation states that y = 32x + 27, so to find the correct answer, u must find the (x,y) coordinate that makes each side equal to the other. Plug in each number accordingly...
(y) = 32(x) + 27
a. (248) = 32(8) + 27
b. (379) = 32(11) + 27
c. (354) = 32(6) + 27
d. (288) = 32(9) + 27
now it’s just a matter of simplifying to see which equation is true.
a. 248 =/ 283
b. 379 = 379
c. 354 =/ 219
d. 288 =/ 315
The only equation that is true is B.
Answer:
the correct answer will be b/c
Answer:
B
Step-by-step explanation:
