A water tank is filled with a hose.The table shows the number of gallons of water in the tank compared to the number of minutes

Mathematics

1 answer:

Anettt [7]3 years ago

7 0

Step-by-step explanation:

do you have a picture??

instructions unclear

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4(5x-9)=20x-45 i have no idea how to solve this

Marat540 [252]

Answer: no solution

Step-by-step explanation:

20x - 36 = 20x - 45

-20x. -20x

-36 = -45 since this is not true, the answer is there is no solution

4 0

3 years ago

Find the missing factor.<br> n(n-3)+2(n-3)=( )(n-3)

elena-s [515]

This is the concept of quadratic equations. We are required to find the missing factor in the partially factored quadratic equation given;
n(n-3)+2(n-3)=()(n-3)
here we proceed as follows;
n(n-3)+2(n-3)
when we factor this we get:
(n-3)(n+2)
this can be written as:
(n+2)(n-3)
The answer is (n+2)

3 0

2 years ago

Bobby is testing the effectiveness of a new cough medication. There are 100 people with a cough in the study. Seventy patients r

Tresset [83]

Answer:

0.665

Step-by-step explanation:

Given: 100 people are split into two groups 70 and 30. I group is given cough syrup treatment but second group did not.

Prob for a person to be in the cough medication group = 0.70

Out of people who received medication, 34% did not have cough

Prob for a person to be in cough medication and did not have cough

= $\frac{0.70(34)}{60}=0.397$