How do I had mixed numbers as a 5th grader

in an examination of 140 students, 80 students passed mathematics, 65 passed physics, 75 passed chemistry, 33 passed mathematics and physics while 30 passed mathematics and chemistry only, if 15 students passed all three courses and 91 students

Mark draws one card from a standard deck of 52. he receives $ 0.35 for a heart, $ 0.55 for a jack and $ 0.85 for the jack of hearts. how much should he pay for one draw

The first 6 elements of a sequence of random numbers are: r1 = 0.82; r2 = 0.23; r3 = 0.95; r4 = 0.20; r5 = 0.14; r6 = 0.38; If a simulation begins with the fourth random number (r4), the first demand value would be:

Last week a jacket cost $39.50 this week the price of the jacket decreased by $4.50. What is the price of the jacket after the decrease how much would it cost to purchase 2 jackets this week?

A cup of brewed tea has 43 milligrams less caffeine than than a cup of brewed coffee. If a cup of tea has 56 milligrams of caffeine, how much caffeine is in a cup of coffee

Which expression is equivalent to (4√5^3) 12? 5^16/3 5^6 5^2/3 5^3/8

A patient is 68 inches tall, how many cm is the patient?

What is an algebraic expression for "46 more than n"?

What does 5^ (3*5^ (-4)) equal plus steps

The base of a prism is a right triangle. The lengths of the legs of the right triangle are 5 inches and 7 inches. The height of the prism is 8 inches. What is the prism's volume? A. 20 in. B. 140 in. C. 96 in. D. 280 in.