Solve using substitution

y = x+4

x-y = - 4

what is the units digit of the sum of 1!+2!+3! ... n! when n=2019. Include an explanation and what a unit digit is.

Write the following equation in standard form. y=-4/5x-2

Describe the correlation. no correlation prime correlation positive correlation negative correlation It is prime correlation

14. Which is correct? F. 3_T = 6400 oz G. 102,400 oz = 3_T H. 31 T = 0.2 oz J. 512 oz = 3 T

What is the largest four-digit negative integer congruent to $1 / pmod{23}?$

50/8 converted as a mixed number

If x = 9 and y = - 2 what's 10 + 5xy

How do we express one-half difference of a number cubed and one

A pool table supply company is making a cardboard box to package new cubes of pool cue chalk. Each cube of chalk is 1 cubic inch. The company considers all the ways to arrange 16 cubes of the chalk.

About 13 out of 20 homes have a personal computer. On a street with 60 homes, how many would you to expect to have a personal computer?