Sally and marta Had the same number of postcards. After sally sold 18 of her postcards, Marta had 4 times as many post cards as sally How many post cards did each girl have to begin with?

You plan on buying new flooring for your bedroom. Your bedroom is a rectangle that is 12.7 ft. by 14.25 ft. How many square feet are you going to need?

For the sequence of even natural numbers 8,10,12,14 ... find a9, the 9th term a. 30 b. 28 c. 24 d. 26

Use the Law of Cosines to find the missing angle. Find m∠B, given a = 11, b = 12, and c = 17.

Evaluate f (x) - g (x) when f (x) = 4x-1 and g (x) = - 3x 2

What is the same value as 12 tens

I will mark you brainliest what is 2+9+4+6+1=

429-278+34 (6) = 975 (5)

What causes a line to switch direction? Changing the slope from a whole number to a fraction. Changing the y-intercept from negative value to a positive value.

Explain what these ratios all have in common: 8:5, 16:10, 24:15.

Chloe draws three parallelograms. In each figure, she measures a pair of angles, as shown. What is a reasonable conjecture for Chloe to make by recognizing a pattern and using inductive reasoning?