Solve the system by substitution

x=4/5y

y=2x + 3

Is the statement below always, sometimes, or never true? Give at least 2 examples to support your reasoning. The LCM of two numbers is the product of the two numbers?

The blueprint for a house has a scale of 1 cm = 3 ft. what would be the actual length of a wall that was 5 cm on the blueprint?

If there are 170 students in 12th grade, what percentage of the twelfth grade students have more than one college in mind? 1 college = 75 students 2 college = 27 students 3 or more colleges = 23 students

True or false An undefined term cannot be used in a theorem.

Factorize 2x^4-7x^3-13x^2+63x-45 using factor theorem.

A local company wants to evaluate their quality of service by surveying their customers. Their budget limits the number of surveys to 100.

Select the correct numeral form of this number written in scientific notation. 5.0 * 10^10 0.000 000 000 5 5,000,000,000 50,000,000,000 500,000,000,000

John has a bag of marbles that contains 12 red marbles 20 green and 17 blue. if john pulls one marble what is the probability that it will be a purple marble

Solve for x: 2 over 3 (x - 4) = 2x. 2 - 2 - 8 - 4

kyle mom made a pone and a cake. she cut the pone into 6 equal parts and the cake into 8 equal parts. his family ate 3/4 of the cake. if his family ate more cake than pone. what fraction of the pone coulh have been eaten.