Agroup of asu sustainability student took 100 soil samples in different places in the valley. they test those samples for a certain chemical. the test is not 100% correct. if the soil contains the chemical, the test shows a positive test result 90% of the time. if the soil does not contain the chemical, it gives a negative result 80% of the time. if 20 of the soil samples contain chemicals, what is the probability the sample contains a chemical if you have a positive test return for the sample?

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation:

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.

step-by-step explanation:

what is the figure? attach a picture.