Can Someone Calculate the average of my Grades. 1:Math 1st sem avg 77

2:English 1st sem avg 50

3:Phys Ed 1st sem avg 90

4:Photo art 1st sem avg 79

5:History 1st sem avg 55

6:Computers 1st sem avg 36

7:Science 1st sem avg 75

1: 87

2: 73

3: 87

4: 90

5: 93

6: 64

7: 69

Good news plz!

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

yes. we do proportions in probabilities.

i think it is c, not positive though

step-by-step explanation: