For every 30 letters that Maria sent in a month, she received 40 letters. What is the ratio in simplest form of the number of letters sent to the number of letters received by Maria that month?

Will give brainliest answer! Solve using the substitution method: x - 2*square root sign*x - 3=0

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Group 10ax-5ay+2bx-by. Include steps

Find the exact value of the following. Find - xy, for x = - 75.9 and y = 2.6. -xy =

Mandy knows that a 5 meter long metal bar has a mass of 40 kg. Mandy wants to figure out the mass (w) of a bar made out of the same metal that is 3 meters king and the same thickness.

The original price was $12, increased to $15. Find the percent increase

four times the smaller of two consecutive odd integers is the same as 67 less than 5 times the larger integers

True or false: given that there are only 10 different possible samples of size two that can be selected from a population of five values, the sampling distribution of the mean would be composed of the means of these 10 samples.

The sale price for a bicycle is $89.90. the sale price includes a discount of 20%. what is the original price of the bicycle

The museum's show for July features 30 oil paintings by different artists. All artists show the same number of paintings and each artist shows more than 1 painting. How many artists could be featured in the show?