How to solve this using substitution. Y=3x and x+y=4

The harford bears had a record of 36 wins and 12 losses what was the ratio of the wins and losses?

An athlete trains for 110 min each day for as many days as possible. Write an equation that relates the number of days d that the athlete spends training when the athlete trains for 770 min.

What percent of $1 is a penny?

5x + 9y, when x=8, y=11

15 divided by 6 2/3 equals

In a computer game, a bird flies at a height of 1,281 feet. At the same time, a fish swims 282 feet below sea level. What is the difference between the height of the bird and the depth of the fish?

3√464 Step 1: 3 (√400 + √64) Step 2: 3 (20 + 8) Step 3: 3 (28) Step 4: 84 One of the steps shown is incorrect. Rewrite the incorrect step so that it is correct and find the correct answer. Write the answer in radical form, no decimals.

Two sides of an obtuse triangle measure 12 inches and 14 inches. The longest side measures 14 inches. What is the greatest possible whole-number length of the unknown side?

4z to the second power = 144

Lyle has 7/10 as many stamps as jeremy. If Jeremy has 140 stamps. How many more stamps does he have than lyle?