I believe it would be under 8 percent since 9 is lower
The answer is A). 5*4=20 one fifth is 4.
Answer:
-14
Step-by-step explanation:
First of all, we know that 5x^2+ ax+7x +5=0 only has one root. That means that b^2 - 4ac=0, and we can use this to find the discriminant, ax + 7x.
Now, if we simplified 5x^2+ ax+7x +5=0, by dividing it all by 5, it would be x^2+(a+7)/5x + 1 = 0.
After, we can plug what we know into the formula, b^2 - 4ac=0. It would be:
(a+7)^2 / 25 - 4 = 0
(a+7)^2 / 25 = 4
(a+7)^2 = 100
Since this is a square root, a+7 can be both negative or positive.
a+7= 10, or a+7 = -10
a=3, or a=-17
The question asks for the sum of a, which is 3 + (-17) = -14
Therefore, the answer is -14.
:) have fun with your rsm problems, assuming you got this from the portal.
Hello,
mes QRT=3x+5=3*14+5=47°
mes TRS=10x-7=10*14-7=133°
since
3x+5+10x-7=180
==>13x=184
==>x=14(°)
Step-by-step explanation:
(0,-3) and (1,0) this are the point
