What is the solution to the system of equations? y = 2x -1 y = -x +5

Mathematics

2 answers:

PolarNik [594]2 years ago

8 0

x= −2 and y=3

I can't explain this very well, sorry.

Anna71 [15]2 years ago

6 0

The solution is:

x= 4/3

y= 11/3.

Step by step: (substitution)

2x+1=-x+5

Add x to both sides.

3x+1=5.

Subtract 1.

3x=4.

Divide by 3.

x=4/3.

Use 4/3 instead of x to find y.

y=-(4/3)+5

y= 11/3.

Hope this helped!! :)

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Sever21 [200]

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4 0

3 years ago

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ipn [44]

The expression which is equivalent to √(-9) is 3i.

<h3>What is Complex number?</h3>

A complex number is the sum of a real number and an imaginary number. A complex number is of the form a + ib and is usually represented by z.

Here, given expression;

y = √(-9)

y = √9 X √(-1)

y = 3√(-1)

y = 3i

Thus, the expression which is equivalent to √(-9) is 3i.

Learn more about Complex number from:

brainly.com/question/10251853

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5 0

2 years ago

Does anyone know how to do this ?

goldenfox [79]

Answer: D) 32

Step-by-step explanation:

The area of a parallelogram equals its base times its height. Substitute the base and area into this formula to solve for the height:

A=bh

40=(5)(h)

h=8

If ABCD is a parallelogram, opposite sides are parallel, so AB is parallel to DC. If AB is parallel to DC, EB is parallel to DC. Since EB is parallel to DC, quadrilateral EBCD has at least one pair of parallel sides, making it a trapezoid. The area of a trapezoid is equal to $\frac{h(b_{1}+b_{2}) }{2}$ where h is the height, $b_{1}$ is one base, and $b_{2}$ is the other base. Plug the necessary values into the formula: