Please solve: 8n+2≤8n−9! Show your work please!

1 answer:

4 0

This doesn’t make any sense, because 8n-8n<=-9-2
Which means 0<=-11 which doesn’t make sense, therefore this there are no solutions for this inequality.

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42=-2d+6 I need help

sineoko [7]

<span>42=-2d+6

Here, to find d, you need to separate it on one side.
First, subtract 6 from both sides.

42-6 = -2d + 6 - 6
36 = -2d

Now divide both sides by -2.

36/-2 = -2/-2d
-18 = d

The answer to this problem is -18, or d = -18.</span>

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kotykmax [81]

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ololo11 [35]

Answer:

$\left\{\begin{array}{l}y\le 4x\\y\ge 50\\25x+15y\ge 1975\end{array}\right.$

Step-by-step explanation:

Let x represent the number of lawns mowed and y represent the number of cars washed.

1. Since the number of cars that Beth wash is no more than four times the number of lawns Mike has scheduled to mow, you have that $y\le 4x.$ .

2. Beth will wash at least 50 cars, then $y\ge 50.$

3. Mike charges $25 each time he mows a yard, then he earns $25x for mowing x yards. Beth charges $15 for each car she washes, then she earns $15y for y cars washed. They need at least $1975, so

$25x+15y\ge 1975.$