Solve the system of equations

a + b = 10

a - b = 2

A. a = 5, b = 5

B. a = 2, b = 8

C. a = 6, b = 4

D. a = 3, b = 7

1 in 3 babies born last year are expected to live to 100years old 720 000 babies were born last year. How many of these babies are expected to live to 100years old?

When can you pull a number out from under the radical?

The height of a triangle is 7 ft more than its base. if the area of the triangle is 30 ft^ what is the lentgh of the base

Alex swims at an average speed of 45 m/min. How far does he swim in 1 min 24 sec? m

Given a right triangle with legs of 3 cm and 12 cm, which triangle is similar? A) A right triangle with legs of 6 cm and 18 cm A right triangle with legs of 9 cm and 18 cm A right triangle with legs of 6 cm and 24 cm A right triangle with legs of 8

To find a baseball pitcher's earned average (ERA), you can use the formula Ei=9r where E represents ERA, i represents the number of innings pitched, and r represents the number of earned runs allowed. Solve the equation for E.

What unit would you to measure the weigh if a chair

What is the following sum? √x^2y^3 + 2√x^3y4 + xy√u

Xy + 11x + 3y + 33 factor by grouping

Is 14/50 closer to 9/11 or 10/11