Solve a + b = 90 for b

For the volume of soap in a bottle, Ryan determined the margin of error as 354.85mL to 354.95mL. What was the volume of soap that he measured

2 (w-3) - 5w=-3 (w+3), what's the solution

Round 372 to the nearest 10

The length of one side of an equailater triangle is 3/4 foot long. What is the perimeter of the triangle?

A square patio has an area of 215 square feet. How long is each side of the patio to the nearest 0.05

John is twice as old as Mary. The sum of their ages is 21. How old is Mary? Let J = John's age and M = Mary's age. Select the system equations that represents the problem. J - 2M = 0 M - 2J = 0 J + M = 21 J = M + 2

A function is defined by f (x) = x/4, what is f (-8)

Find tan θ if sec θ = √26/5 and sin θ < 0.

Why do you think you need to add zero pairs to get the - 1 - tiles to fit in the rectangle?

Could someone explain to me how to find the unit value for something?