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3 years ago

Solve by substitution: 5x+y=-13 and y=7

Mathematics

2 answers:

Ne4ueva [31]3 years ago

7 0

Answer: 4/7

Step-by-step explanation: Multiply each equation by the value that makes the coefficients of

opposite.

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)

⋅

(

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)

(

)

(

)

Simplify.

Tap for more steps...

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Add the two equations together to eliminate

from the system.

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Divide each term by

and simplify.

Tap for more steps...

Substitute the value found for

into one of the original equations, then solve for

Tap for more steps...

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The solution to the independent system of equations can be represented as a point.

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)

The result can be shown in multiple forms.

Point Form:

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)

Equation Form:

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Butoxors [25]3 years ago

5 0

The answer I got is X=6/5 y=7

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Which graph represents a linear function?

pshichka [43]

Answer:

y + 2x = 10 (third option)

Step-by-step explanation:

We can see that every time x increases by one, y increases by -2, meaning that the slope is -2.

We also know that the y-intercept is 10 because that is the value of y when x is equal to 0.

Now, we can create the equation using the slope-intercept form (y = mx + b, where m is the slope and b is the y-intercept).

y = -2x + 10

If you look at the third option, that equation is just a rearranged form of our equation (y + 2x = 10).

This means that the third option is correct.

7 0

3 years ago

Read 2 more answers

a circle with a radius of 1 cm sits inside a 3cm x 3cm rectangle. What is the area of the shaded region (the rectangle is shaded

masha68 [24]

Answer:

The area of the shaded region is $5.86\ cm^{2}$

Step-by-step explanation:

we know that

The area of the shaded region is equal to the area of the rectangle minus the area of the circle

The rectangle is a square

$A=b^{2} -\pi r^{2}$

we have

$b=3\ cm$

$r=1\ cm$

assume

$\pi =3.14$

substitute the values

$A=3^{2} -(3.14)(1)^{2}$

$A=5.86\ cm^{2}$

5 0

3 years ago

Read 2 more answers

Select the correct answer from the drop-down menu.

Contact [7]

Answer:

The correct option is C.

C) -x + 2

Step-by-step explanation:

In mathematics, the term which is being divided is called a dividend. The term by which the dividend is getting divided is called a divisor. The quotient is the term we get after dividing the dividend by a divisor.

Here in this case, the dividend is written.

-x² x x

which in the equation form is written as

-x² + x + x

add the x terms to simplify

-x² + 2x

The divisor is given as x, divide the equation by x:

(-x² + 2x)/x

(-x²/x) + (2x/x)

-x+2

Which is the quotient.

4 0

4 years ago

Vlad [161]

The single transformation from shape A to B is: dilate A by 1/2, followed by a 180 degrees rotation

<h3>How to determine the transformation?</h3>

From the figure, we have:

Shape A is twice the size of shape B
Both shapes can be rotated by 180 degrees in either direction to map onto the other, after dilation.

This means that:

The scale of dilation from shape A is:

k = 1/2

Hence, the single transformation from shape A to B is: dilate A by 1/2, followed by a 180 degrees rotation