3 years ago

I need help evaluating

Mathematics

1 answer:

Alika [10]3 years ago

7 0

I’m guessing 27 4? I’m not sure

You might be interested in

Write 2 ways to take apart 5.

fenix001 [56]

4 and 1
3 and 2
im pretty sure thats is the answer, the question is quite vague.

8 0

3 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

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

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

= $\frac{0.3(20)}{30}=0.20$

Probability for a person not to have cough

= P(M1C')+P(M2C')

where M1 = event of having medication and M2 = not having medication and C' not having cough

This is because M1 and M2 are mutually exclusive and exhaustive

SO P(C') = 0.397+0.2=0.597

Hence required prob =P(M1/C') = $\frac{0.397}{0.597}=0.665$

4 0

3 years ago

Read 2 more answers

The length of the football field is 10x+10 and the width is 4x+20. Write a polynomial that represents the are of the football fi

Maurinko [17]

The solution is in the attachment

7 0

3 years ago

Anyone know the answer to x^2 - 11x + 18 = 0

Digiron [165]

Answer:

x= 9, x= 2

Step-by-step explanation:

x^2- 2x- 9x+ 18= 0

x (x-2) -9 (x-2)

(x-9) (x-2)

x-9= 0, x-2= 0

Therefore, x= 9, x= 2

If you don't mind, plz mark me brainliest

5 0

3 years ago

Read 2 more answers

Glasper -U. Hector recorded the amount of coffee he drank (in milliliters) and the duration of his drive (in minutes) over five

AVprozaik [17]

Answer:

thanks if u need help let me know

Step-by-step explanation:

3 0

3 years ago