Which is the value of this expression when a=-2and b=-3

3x + y = 17 4x - y = 18

The difference of the product of two numbers and their sum is 23. If one number is 2 more than the other number, find the numbers.

What's is 1,500 divided by 3

How many shapes did you put together to make 3/2

A man makes 2 ft wide path around his circle garden, the garden has a radius of 7ft. He wants to cover the path in stones, he needs 1 bag of stones per 5 square feet. How many bags does he need?

What is the value of the expression 2 1/2 x + 3 2/3 y (if x = 4 and y = 2)

The claim is that the proportion of peas with yellow pods is equal to 0.25 (or 25%). the sample statistics from one experiment include 480 480 peas with 127 127 of them having yellow pods. find the value of the test statistic.

90% of students at a university use a backpack, while the rest do not. Of all the students, 50% carry their laptops with them and 5% carry neither a backpack nor laptop. What percentage of students carry their laptops and use a backpack?

Brianna's teacher asked her which of these three expressions are equivalent to each other 9x - 3 x - 4, 12x - 4, 5x + x - 4

I am the only number between 41 and 49 that has 5 as a factor. what number am i?