Answer:
2650
Step-by-step explanation:
Given: 2648
Two significant figures means we need to round off to the nearest tens place.
In 2648, the tens place is 4
To round off the tens place, we need to look for the next digit that is right to tens place, which is 8
8 is greater than 5, so we need to add 1 with tens place (4 +1 = 5)
Therefore, it is 2650
Hope this will helpful.
Thank you.
B, C, and D all have an x-value of 4.
Hey there! 12*12=144. Hope I helped! :)
Answer:
B
Step-by-step explanation:
Answer:
Below in BOLD.
Step-by-step explanation:
1. The discriminant D = b^2 - 4ac
= 3^2 - 4*5*(-7)
= 9 + 140
= 149.
Positive value so it has 2 real solutions.
2. D = (-12)^2 - 4 * 9 * 4
= 144 - 144
= 0.
So it has one real solution.
3. D = 2^2 - 4*1*3
= -8.
It is negative so there are No real solutions.
4. D = 4^2 - 4*2*10 = 16 - 80 = -64.
No solutions.
5. D = (-12)^2 - 4*3*(12)
= 144 - 144 = 0
So its the second choice.
