Statistics question-needs to show

Peppermint patty is very discourged about her chances on a 10-item true-false quiz. if she randomly answers each question, what is her probability of getting a grade of at least 50% on a Two item quiz? Three item quiz? Four item quiz? Five item quiz?

Solve the system by substitution. Check your solution. 0.5x+0.25y=36 y+18=16x a. (36, 72) c. (49, 81) b. (9, 126) d. (21, 9)

Rachel jogged along a trail that was 1/4 of a mile long. she jogged around the trail 8 times. How many mile did Rachel jogged?

What is the prime factorization of 33

what is 2x116 and 4x17

Ruby is visiting San Francisco. From her hotel she walks 1 block west ans 4 blocks south to a coffee shop. Then she walks 5 blocks east and 6 blocks south to a museum. Where is the museum in relation to her hotel

A youth chorus has 30 members. There are 14 boys in the chorus. What is the ratio of boys to girls in simplest form? A. 7/15 B. 8/15 C. 7/8 D. 8/7

Each morning Papa notes the birds feeding on his bird feeder. So far this month he has seen 59 blue jays, 68 black crows, 12 Red Robin's and 1 cardinal. If 300 birds visit Papa's bird feeder, how many blue jays can we expect to see?

What value of c makes the polynomial below a perfect square? x2 + 16x + c c = A. 32 B. 64 C. 4 D. 256

Find the y-intercept and x-intercept of the line. x-2y=-8