PLEASE HELP WITH ATTACHED PHOTO:) I completed the Venn diagram but a, b and c need answering, I don’t think the completed Venn diagram is completed right though. So please correct me if needed :)

a. 0.69

b. 0.13

c.0.56

Step-by-step explanation:

Total number = 100

a) either means students with either option are valid

69/100 = 0.69

b) both means each student has done both math and english

=13/100 = 0.13

c) Only one means has done one subject and not both classes. We have 23 for math and 33 for english (this is according to your venn diagram)

23+33=56

one subject =56/100 = 0.56

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

10

step-by-step explanation: