Answer:
(7+6) · x
Step-by-step explanation:
hope this helps :)
The inequality built is: ![10s + 248 \geq 657](https://tex.z-dn.net/?f=10s%20%2B%20248%20%5Cgeq%20657)
Solving the inequality, it is found that Myesha needs to buy at least 41 sets.
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- The restaurant currently has 248 knives.
- Each set on sale contains 10 knives, thus, for s sets, 10s knives are added.
- If s sets are bought, the total number of knives is:
![T = 248 + 10s](https://tex.z-dn.net/?f=T%20%3D%20248%20%2B%2010s)
The restaurant needs at least 657 knives, thus:
![T \geq 657](https://tex.z-dn.net/?f=T%20%5Cgeq%20657)
The inequality is:
![10s + 248 \geq 657](https://tex.z-dn.net/?f=10s%20%2B%20248%20%5Cgeq%20657)
The solution is:
![10s \geq 409](https://tex.z-dn.net/?f=10s%20%5Cgeq%20409)
![s \geq \frac{409}{10}](https://tex.z-dn.net/?f=s%20%5Cgeq%20%5Cfrac%7B409%7D%7B10%7D)
![s \geq 40.9](https://tex.z-dn.net/?f=s%20%5Cgeq%2040.9)
Thus, Myesha needs to buy at least 41 sets.
A similar problem is given at brainly.com/question/17248342
Answer:
Put the equation in standard form by bringing the 4x + 1 to the left side.
7x2 - 4x - 1 = 0
We use the discriminant to determine the nature of the roots of a quadratic equation. The discriminant is the expression underneath the radical in the quadratic formula: b2 - 4ac.
b2 - 4ac In this case, a = 7, b = -4, and c = -1
(-4)2 - 4(7)(-1)
16 + 28 = 44
Now here are the rules for determining the nature of the roots:
(1) If the discriminant = 0, then there is one real root (this omits the ± from the quadratic formula, leaving only one possible solution)
(2) If the discriminant > 0, then there are two real roots (this keeps the ±, giving you two solutions)
(3) If the discriminant < 0, then there are two imaginary roots (this means there is a negative under the radical, making the solutions imaginary)
44 > 0, so there are two real roots
Answer:
A child ticket is 14 dollars and a adult's ticket is 8 dollars
Step-by-step explanation:
3a+c=38
3a+2c=52
c=14
a=8