Here is the equation: x+(x+20) = 120
Since you can't combine anything yet, its x+x+20=120
You need to get x by itself
Minus 20 from both sides
Its x+x=100 now
Combine the x's which is now 2x
Now divide 100 by 2 which is 50
x=50
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Lets check:
50+(50+20)=120
Now combine the numbers in the parentheses
Its now 50+70=120
50+70=120 and 70-50=20
As you can see, he ran 50 minutes the first day and 70 minutes the second day
5% = 1/20
so if 35 pages are 1/20th of the book, the book would be 20 x 35 pages long.
20 x 35 = 700 Pages
Answer:
slope / m = 3/2 & y-intercept = (0,0)
Step-by-step explanation:
y=mx+b is the formula
m in this equation is 3/2 (y=3/2x)
there's no b because there's no constant so it's (0,0)
A. SS = r²(SS_x)
B. SS = (1-r²)(SS_x)
C. SS = r²(SS_y)
D. SS= (1-r²)(SS_y)
The residual sum is given in the picture below so it is D which is correct.
Answer:
<h2><u><em>
x = 21</em></u></h2>
Step-by-step explanation:
5x - 12 = 3x + 30
5x - 3x = 30 + 12
2x = 42
x = 21
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check
5 * 21 - 12 = 3 * 21 + 30
93 = 93
the answer is good
