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Wewaii [24]
3 years ago
11

20 - 9w = 4(15 - w) solve for w​

Mathematics
2 answers:
posledela3 years ago
8 0

Answer:

w = -8

Step-by-step explanation:

  step 1:(20 - 9w) -  4 • (15 - w)  = 0

step 2:   -5w - 40  =   -5 • (w + 8)

 step 3:   -5 • (w + 8)  = 0

 step 4:  Subtract  8  from both sides of the equation :

                     w = -8

Firlakuza [10]3 years ago
6 0
20-9w=4(15-w)
20-9w=60-4w
+9w +9w
20 = 60+5w
-60 -60
-40=5w
Divide by 5 on both sides to get w alone.
-8 = w
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92.4 is 150% of what number?
Ad libitum [116K]
1. We assume, that the number 92.4 is 100% - because it's the output value of the task. 
<span>2. We assume, that x is the value we are looking for. </span>
<span>3. If 92.4 is 100%, so we can write it down as 92.4=100%. </span>
<span>4. We know, that x is 150% of the output value, so we can write it down as x=150%. </span>
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where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
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6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 150% of 92.4

92.4/x=100/150
<span>(92.4/x)*x=(100/150)*x       - </span>we multiply both sides of the equation by x
<span>92.4=0.666666666667*x       - </span>we divide both sides of the equation by (0.666666666667) to get x
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Answer:

Step-by-step explanation:

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