Determinați numerele prime a, b si c care verifica relațiile:

a) 3a+b+6c=51

b) a+10b+6c=62

c) a+2b+4c=50

Evaluate a to the 2nd power, b to the second power, c to the second power, for a = 2 b=3, c = 4

Carol has only 20p and 10p coins in her purse she has three times as many 20p coins and 10p coins if Carol has £4.20 altogether, how many 20p coins does she have

What is the area of a circle with a radius of 4cm

Draw a model of 20 divided by 5

David has twice as many cousins as Becky. Becky has twice as many cousins as Nishat. Nishat has 6 cousins. How many cousins does David have?

Plot the intercept 7x-3y=21

Which of the following is an example of an equation? 2m + 1 x + 7 9 - X + 7 X-8 = 12

Solve the equation. - 5x + 2 = 67 A) x = 13 B) x = - 13 C) x = 69 / 5 D) x = - 69/5

Mr. Li has a bag of Skittles. There are 5 blue Skittles, 3 red Skittles, and 12 yellow Skittles. What is the probability of pulling out a blue Skittle? Express your answer as a simplified fraction. BONUS: What is your answer as a percent?

Sarah and Emmaree put on just dance. After school. When they started, it was 4:45pm and they danced until 5:30pm how many degrees does the minute hand turn by the time they stop dancing?