Answer:
5+√97/4
Also 5-√97/4
Step-by-step explanation:
The Quadratic formula is x=-b+-√b^2-4ac/2a
This means that we should plug the values for A B AND C into the formula
We can work out that
<u><em>A = 2</em></u>
<u><em>B=-5</em></u>
<u><em>C=-9</em></u>
Once we have put these into the formula we get
5+√97/4 (all over 4) aka 3.71
Also 5-√97/4 (all over 4) aka -1.21
For this problem, I'd use cross-multiplication.
9/12 = x/8.
When cross multiplying, multiply 12*x and 9*8. This leads to a new equation:
12x = 72.
Then you solve as an algebra problem.
*Divide 12 on both sides*
x = 6.
The answer is 1,1500 because you ha e to subtract the lowest to highest number
Answer:
466.2
Step-by-step explanation:
He can only invite 35 people
the cost per person = $3.50 + $5.00 = $8.50
dividing $300 by $8.50 determines the amount he can invite
= 35.29411...
He can invite 35 people at a cost of $8.50 × 35 = $297.50
