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dusya [7]
3 years ago
8

Can you use elimination to solve a system of linear equations with three equations

Mathematics
2 answers:
crimeas [40]3 years ago
7 0
You can use elimination to solve systems of equations with 3 equations. I know how to solve systems of equatons with 3 equations, but I use a different process, I don't know how to use the elimination method.
Volgvan3 years ago
5 0
Yes, you can use Cramer's Rule.
The procedure for 2 unknowns AND 3 unknowns can be found here:
http://www.1728.org/cramer.htm





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Please help. What are the measures of ∠a, ∠b, ∠c and ∠d? Explain how to find each of the angle measure.
MissTica

Angle a has a little square box in it, which means right angle, which is equal to 90 degrees.

Angle A = 90 degrees

Angle A m B and the 59 forms a straight line which needs to equal 180

Angle B = 180 - 59 - 90 = 31

Angle B = 31 degrees.

Angle C is a vertical angle with A and B, so Angle C = 90 + 31 = 121 degrees.

Angle D is a vertical angle with 59, so equals 59 degrees.

4 0
3 years ago
XYZ is a dilation of triangle ABC by a scale factor of 5. Which of the following proportions verified that triangle ABC and XYZ
Dima020 [189]

Answer:

C. AB/XY = AC/XZ

Step-by-step explanation:

Dilation:

A dilation is a transformation that produces an image that is the same shape as the original, but is a different size. The original figure either stretches or shrinks by a certain factor.

In the problem, the dilation is by a factor of 5 and we can see that ABC shrinks to form XYZ.

So, ABC and XYZ are similar triangles which means that the ratio of their corresponding sides will be equal:

AB/XY = AC/XZ = BC/YZ = 5

5 0
3 years ago
Read 2 more answers
The function f(x) = a^x + 4 will never cross the x-axis if a is positive. True or False?
Jet001 [13]

Answer:

True

Step-by-step explanation:

If a is negative then the shape of the graph is an upside down U, which intersects the x-axis. If a is positive it will never cross the X axis.

8 0
2 years ago
0,4 5,3 ,1 reflected over the x axis
Sedaia [141]

Answer:

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7 0
3 years ago
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Norma-Jean [14]

Answer:

$4.48

Step-by-step explanation:

First, you have to convert the percentage into a decimal.

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Second, you multiply the decimal with the cost of the product before tax.

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This number is the amount of money you will have to pay in tax.

Third, you add the tax amount to the original cost of the product to get the total price.

$4 + $0.48 = $4.48

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2 years ago
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