Calculus

3x2 + 2x - 8 = 0 is a quadratic equation.

-6x = 12

x = -2

-1

Confusing! It does not

7x+3y=-52

3(8x-y=-74)

7x+3y=-52

24x-3y=-222

7x=-52

+ 24x=-222

31x=-274

x=8.8387

8x + 15

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The answers is 0.

No

-5

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5 * 140 = 700

I don't know what your units are, so let me assume they are m (meters)

2m x 8m x 10m = 160 cubic meters of material can fit into that cube.

The standard substance that is used to relate metric measurements to each other is water. The "gram" was defined as the mass (not weight, but similar) of one cubic centimeter of water at normal temperature. There are 1 million cubic centimeters in a cubic meter, so a cubic meter of water would have a mass of 1 million grams, or 1,000 kilograms, or 1 metric ton.

To obtain the mass of 1 cubic meter of some other substances, simply multiply the specific gravity of the substance by the mass of a cubic meter of water

y = 3x + 1

y = 3(1) + 1

y = 3 + 1

Y = 4

y=m(x)+b

33.3333...%

something

x = -2 and y = 4

(-2,4)

y = 1. When the degree of your numerator is the same with the degree of your denominator, then y = the ratio of the leading coefficients of the numerator and denominator is the horizontal asymptote.

Very Carefully :)

In the equation 3x plus 7 equals 13, x is equal to 2.

As written, that's 4x squared = -21 and x equals the square root of -21/4.

But if you meant that to be 12x, it factors out nicely to (2x + 3)(2x + 3) and x would equal -3/2

Multiply the first by 3 and the second by -2

So

1. 4x + 3y = 33

2. x = -4y - 25

Two linear equations (degree one polynomial) are likely to be consistent. If you have some knowledge with matrices, using Gaussian Elimination it can be done easily. I will assume that knowledge is not available.

It is known that x and y are related in a way such that both equations are satisfied, in particular x = -4y - 25. so 4x is namely 4(-4y - 25) and 4x + 3y = 4(-4y - 25) + 3y which is 33.

Simplify the single variable polynomial y and solve for y. It should be an easy way of rearranging things.

For the matrix method, post in discussion.