How much water should be added to 30 liters of a 40% acid solution to reduce it to a 30% solution

Matt runs four days a week on the first day he runs 30 minutes. On the second day he runs 5 minutes more than on the first day on the third day he runs the same number of minutes as the second day on the fourth day he runs 10 minutes more than the

What is the value of - 5 1/2 + 7 3/4 - (-4)

If side a measures 90 feet and side b measures 120 feet, how many feet of flowers will be planted along side c, the hypotenuse of the triangle? Show your work and explain your reasoning.

Analyze the reflectional symmetry of the vowels. Which vowels have more than one line of symmetry? A and U E and I I and O O and A

4² + 6²=X² what is X?

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?

Simplify so that there are only positive exponents (3^9/3^-5)