Solve the syetems of equations:

-4x+10y=40

4x+10y=-30

Solve for x. 3?8 (2x+16) - 2=13 Enter your answer in the box. x =

A thief steals an ATM card and must randomly guess the correct three -digit pin code from a 10 -key keypad. Repetition of digits is allowed. What is the probability of a correct guess on the first try?

Say you have 27 small cubes. You put them together and make a big cube. Meaning you have 3 layer of 9. Now you painted all the faces of the big cube. How many cubes are not painted. A. 0 B. 1 C. 4 D. 7

8w+6k+5-7 use w=2 and k=6

Giselle works as a carpenter and as a blacksmith. She earns / $20$20dollar sign, 20 per hour as a carpenter and / $25$25dollar sign, 25 per hour as a blacksmith.

Solve the problem 4y+3=19 using mental math

The composite figure is made up of two congruent rectangular pyramids joined at their bases. What is the total volume of the composite figure? units3

What is 7,782 rounded to the nearest hundred

Find the slope between (1, 1) and (8, 7)

Can 72 hundredths be reduced?