3 years ago

11. -2+b<3

Mathematics

1 answer:

IRINA_888 [86]3 years ago

7 0

Answer:

11. -2+b<3

b < -5

9. 1/5<x/15

x > 3

10. 9>-r

r > -9

6. 2<-1t

t < -2

2. x/3<5

x < 15

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kicyunya [14]

For both of these, we will divide the wanted outcome by the number of possible outcomes. We will end up with a decimal. A decimal multiplied by 100 becomes a percent.

[a] 50%

$\displaystyle \frac{\text{wanted outcomes}}{\text{possible outcomes}} =\frac{\text{student failed}}{\text{Period 2's class}} =\frac{12}{24} =0.5,\:0.5*100=50\%$

[b] 52%

$\displaystyle \frac{\text{wanted outcomes}}{\text{possible outcomes}} =\frac{\text{student failed from Period 3}}{\text{fails from both classes}} =\frac{13}{25} =0.52,$