Assuming that there is supposed to be a + sign in front of the 2 and 4; the answer is as follows.
3(x+2)+4(x-5)=10
3x+6+4x-20=10
7x-16=10
7x=16
x=2 2/7
Hope this helps :)
You set 49 equal to 8x - 15
So
8x - 15 = 49
+15 + 15
8x = 64
Then divide by 8
X= 8
Answer:
x = -3.5
Step-by-step explanation:
Divide both sides by 1 to get rid of the 1
x - 2 = -5.5
Add 2 on both sides
x = -3.5
Dana can type 90 words per minute.
Since, 1 minute = 
hours
Therefore, number of words she can type = 
= 90×60
= 5400 words per hour
If she types 
words in 'x' hours.
Number of words Dana types with the given speed in 'x' hours = Speed of typing × Time
= 
Therefore, 
hours
Therefore, Dana types words in 48.15 hours.
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