eliza

solve each system of equations by substitution. y=3x-9 please help explain how to solve this using substitution.

find the length of a side of a square whose area is 400 cm^2

How long will it take an investment that pays 5% compunded annually to double in value?

1. A chemical crystal weighs 3.630 grams in air and 1.820 grams when immersed in an oil. If the specific gravity of the oil is 0.837, what is the specific gravity of the chemical? 2. A piece of wax weighs 42.65 grams in air, and a sinker weighs 38.42 gram...

There are 30 kids in a class. 3/5 are girls, how many of the are girls

Oops,first question was wrong. Sorry. There are 30 kids in a class room.3/5 of them are girls. How many are boys and how many are girls.

The sales of a certain product after an initial release can be found by the equation where s represents the total number of units sold and t represents the time in weeks after release. How many weeks will pass before the product sells about 150 units? Rou...

in the election of 1860, the---------- won the electoral votes of all y the free states, except a fraction of t he new jersey votes. a)constitutional union b)Whigs c)democrats d)republican

sqrt(2(13.7)/9.8)

If you ate a jelly doughnut for breakfast, the majority of the energy would come from the _________ in the doughnut because it _________. A. fat; contains a low ratio of oxygen atoms. B. sugar; contains high ratio of oxygen atoms. C. carbohydrate; contain...

All living things are composed of the four categories of biomolecules you see here. These molecules are also called macromolecules because they are very large. The function of biomolecules is determined by its structure. Some are building blocks, some sup...

(cos x-sec x) / (sin x)

what is a social policy that may affect your position as a human service worker

1. A chemical crystal weighs 3.630 grams in air and 1.820 grams when immersed in an oil. If the specific gravity of the oil is 0.837, what is the specific gravity of the chemical? 2. A piece of wax weighs 42.65 grams in air, and a sinker weighs 38.42 gram...

dang thanks man

do not know what to do

3(n – 2) >5n is the correct answer