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queenkimm26
09.06.2020 •
Mathematics
An inspector checks 98 cell phones and finds 2 of them not working. If a company has 850 of the phones, how many are likely to not be working?
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Ответ:
17
Step-by-step explanation:
Use ratio method
98:2
850:x
so, x = (850 x 2) divided by 98 = 17.3469388
Round it to nearest whole number = 17
Ответ:
Just look at step by step explanation :\
Step-by-step explanation:
a.
Slope: rise/run
Use slope formula: (y1-y2)/(x1-x2)
Substitute x1=8, y1=9, x2=-2, y2=4
—> (9-4)/(8-(-2)) —> 5/10 —> 1/2
Slope(m) is 1/2
b.
Point slope form: y1-y2=m(x1-x2)
Plug in everything. x1=8, y1=9, x2=-2, y2=4, m=1/2
Point slope form with everything plugged in: 9-4=1/2(8+2)
Simplified if you want?: 5=5
c.
Linear equation form: y=mx+b
Equation so far: y=1/2x+b (m is slope. b is y intercept)
Plug in a point you have into the equation. For ex: I’ll plug in (-2,4)
4=1/2*-2+b
Solve it
4=-1+b
b=5
Now write the completed equation of the line: y=1/2x+5
Hope this helps :)))