9514 1404 393
Answer:
True
Step-by-step explanation:
We assume your equation is intended to be ...

The usual method of solution squares both sides, then solves the resulting quadratic.

Considering the initial problem, we require x ≥ 0, so the x=-7 solution is extraneous.
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A graphical solution shows there is only one value of x that satisfies the equation. The other "solution" arises from considering the negative square root. It is introduced when the equation is squared.
4500 ≤ 1400 + .05x, where x = sales
800 + .15s = 5000, where s = sales <-- this isn't an inequality, because it's asking for the exact amount of sales Ling needs to get.
(85+76+94+81+y)/5 ≥ 85, where y = next test score
Answer:
7 9/16 Or 5.5625
Step-by-step explanation:
7 3/4-2 3/16
So we first need a coment denominator
3/4×4= 12/16
now subtract everything.
7 12/16- 3/16=7 9/16 or 5.5625
The question is incomplete.
This is the complete question as I found in internet:
<span>Use substitution to determine which of the following points is a solution to the standard form equation below 5x-2y = 10
these are the points:
</span>
-1,5
1,5
0,-5
0,5
Answer: (0, -5)
Explanation:
point x y 5x - 2y = 10 ?
-1,5 -1 5 5(-1) - 2(5) = - 5 - 10 = - 15 ≠ 10 ⇒ not a solution
1,5 1 5 5(1) - 2(5) = 5 - 10 = 5 ≠ 10 ⇒ not a solution
0,-5 0 -5 0 -2(-5) = 10 ⇒ a solution
0,5 0 5 0 - 2(5) = - 10 ≠ 10 ⇒ not a solution