I think It’s 0.70 and in fraction is 512/729
The answer to this is 42 degrees and 138 degrees.
Answer:
This quadratic equation has 2 solutions.
Step-by-step explanation:
I assume the '?' in your question is meant to be power 2 (²), or else it would not be a quadratic equation. You could write it using the superscript version of 2.
We can solve this equation by expressing it in the form: ax² + bx + c
x² + 9x= -8
x² + 9x + 8 = 0
Now if you know the discriminant, you can simply plug in your values of a, b, and c to see how many solutions there are.
In this case, you would not need the discriminant as there are whole-number factors and hence this can simply be factorised.
x² + 9x + 8 = 0
(x + 8)(x + 1) = 0
For this equation to be true (= 0), x can equal -8 OR -1.
Hence, this quadratic equation has 2 solutions.
Can you please attach the photo?
Answer:
Step-by-step explanation:
3 (5+1) divided by 3 to the second power = 2
8 divided by 4 times 2 = 4
7 + 2.4 = 9.4
i hope this helps god bless