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3 years ago

What is the result of subtracting the second equation from the first?

Mathematics

2 answers:

Murrr4er [49]3 years ago

6 0

Answer: -4x-2y-x+2y=-5x=-11

Step-by-step explanation:

We have to remember when subtracting equations that we can only subtract like terms. This means that we can only subtract x from -4x, -2y from -2y and 9 from -2. If we do this, we obtain the equation -5x + 0=-11. This is because -4x-x=-5x. When subtracting a negative, we add the term so -2y- -2y becomes -2y + 2y, which cancels to 0. -2-9=-11. -11/-5 is 2.2, the value of x.

Mashcka [7]3 years ago

3 0

Answer:

The result is that you eliminate the 7y term and thus can solve for x.

x = -28/3

y = 30/7

Step-by-step explanation:

-20 + 7y = 10

3x + 7y = 2

subtract... elimination method

-20 - 3x = 8

-3x = 28

x = -28/3

-20 + 7y = 10

7y = 30

y = 30/7

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What should be added to -5/4 to get -1?

nikitadnepr [17]

Answer: 1/4

Step-by-step explanation:

We can actually write an equation to find what should be added to get -1.

$-\frac{5}{4}+x=-1$

We get this equaiton because the problem asks what should be added to -5/4 to get -1. We put x in place to see what number fits. X is being added to the -5/4.

$x=-1+\frac{5}{4}$

$x=-\frac{4}{4}+\frac{5}{4}$

$x=\frac{1}{4}$

7 0

3 years ago

Read 2 more answers

Determine whether the line integral of each vector field (in blue) along the semicircular, oriented path (in red) is positive, n

Harrizon [31]

Considering the images (a),(b),(c),(d),(e),(f) the oriented path is

(a) Negative

(b) Positive

(d) Zero

(e) Zero

(f) Zero

calculating each quadrant's line integral and symmetry.

In calculus, a line integral is an integral where the function being evaluated is along a curve. A line integral is also known as a route integral, curve integral, or curvilinear integral.

What does a Line integral mean?

A line integral makes it possible to figure out a surface's area in three dimensions. Numerous situations call for the use of line integrals. They can be used, for instance, in electromagnetics to determine the work done on a charged particle moving along a curve in a force field that is represented by a vector field.

Path, curvilinear, and curve integrals are other terms for line integrals. There are several uses for line integrals, including electromagnetics, where it is used to calculate the force exerted on a charged particle moving along a curve in a force field created by a vector field.

To learn more about Line integral, visit:

brainly.com/question/28081626

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