Answer:28
Step-by-step explanation:
15+7•4-15
15+28-15
43-15
28
Answer:
In the case of a quadratic equation ax2 + bx + c = 0, the discriminant is b2 − 4ac; for a cubic equation x3 + ax2 + bx + c = 0, the discriminant is a2b2 + 18abc − 4b3 − 4a3c − 27c2.
Step-by-step explanation:
Answer:

Step-by-step explanation:
we have

we know that

In this problem

substitute in the formula


Answer:1/12
Step-by-step explanation:just divide 7/12 by 7 to get the per minute
Answer: 19
Step-by-step explanation:
3^3=27, 27-7=20, 20·5=100, 100/10=10.
1+3=4, 4+6=10, 10+9=19, 19-10=9.
10+9=19.