Write the equation, use “X” to represent the unknown number. Solve for the unknown 20. The difference between a number and 16 is the square of (-5)

21. When three times A number is increased by five, The result is 10.

22. When is 3 sevenths of a number is decreased by two, The result is eight

Step-by-step explanation:

20)

x - 16 = (-5)²

x - 16 = 25

x = 25 + 16

x = 41

21)

3x + 5 = 10

3x = 10 - 5

3x = 5

x = 5/3

22)

3/7 of x - 2 = 8

3x - 14/7 = 8

3x - 14 = 8 × 7

3x - 14 = 56

3x = 56 + 14

3x = 70

x = 70/3

well we know there are 4 clubs in 52 cards so it’s replaced so it should be 3/51

step-by-step explanation:

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.