Mary needs a 90% on her final exam to get an a for the quarter. The exam has 75 questions how many questions does Mary need to answer correctly in order for her to get an A

68 questions

Step-by-step explanation:

Given Data:

Exam questions = 75

Percentage needed by Mary for the quarter = 90%

therefore:

Total number of questions she needs to answer to get an A

= exam questions x percentage needed /100

= 75 * 90 / 100

= 6570 / 100

= 67.5

Approximately Mary needs to answer 68 questions correctly to score an A for the quarter

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.