Solve by substitution

4x + 7y = 1

y = - 2x-7

Kayla has a red number cube and a blue number cube. Each number cube has faces labeled 1 through 6. What is the probability Kayla rolls an even number on the red cube and a multiple of 3 on the blue cube? ΟΑ. 16% B. 25% O c 33% D. 50% E. 83%

What is the explicit rule for this geometric sequence? a1=23; an=9⋅an-1 an=23⋅9n an=9⋅ (23) n-1 an=9⋅ (23) n an=23⋅9n-1

For what value of the constant $k$ does the quadratic $2x^2 - 5x + k$ have a double root?

On some days Melvin commutes 3.5 hours per day to the city for meetings. Last week he commuted for a total of 14 hours. How many days did he commute to the city?

Find number x, if when you add 7 to it and double the result you get 19 more than x.

How many hours are in 186 minutes express this as a mixed number and as a decimal

If 14 is 35% of a value, what is that value? ОА. 40, ОВ. 86 Ос. 65 OD. 21

In Mrs. Dawson's class, 16 out of 24 students made at least an 80% on the last math test. Write a ratio in simplest form comparing the number of students who scored below an 80% to the total number of students.

Fractions that are equivalent to 4/12

The formula PV = 300 R is used in chemistry. How can this formula be solved for P