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3 years ago

Solve: 3x-1=8(x+1)+1

Mathematics

1 answer:

Karolina [17]3 years ago

8 0

Answer:

X= -2

Step-by-step explanation:

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Which relationships have the same constant of proportionality between yyy and xxx as the equation 3y=27x3y=27x3, y, equals, 27,

Vera_Pavlovna [14]

Answer:

$y=9x$

$y=\frac{18x}{2}$

$y=\frac{81x}{9}$

Step-by-step explanation:

The given equation is

$3y=27x$

If we isolate $y$ , we can find the constant

$y=\frac{27x}{3}\\ y=9x$

So, the constant is $k=9$ .

Another proportions that have the same constant as the given equation are

$y=9x$

$y=\frac{18x}{2}$

$y=\frac{81x}{9}$

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3 years ago

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At a restaurant, 25% of the dinner plates are clean. There are 80 total dinner

pochemuha

Answer:

Step-by-step explanation:

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3 years ago

The lunch choices last Friday were mushroom or pepperoni pizza. The cafeteria made 8

Anna11 [10]

Answer:

5%, 6%

or 6.4%, 5.76%

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2 years ago

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Graph the line y=-3x

tino4ka555 [31]

Answer:

Step-by-step explanation:

Graph y = -3x. Start at the origin (0, 0). Place a dark dot there. Now, starting with your pencil point on that dot, move 1 space to the right and from this new point move 3 spaces down. Place a dark dot at this new point.

Now draw a straight line through both dark dots. This is the desired graph.

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3 years ago

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Point B has coordinates (4,1). The x-coordinate of point A is -4. The distance between point A and point B is 10 units. What a

klasskru [66]

Given:

Point B has coordinates (4,1).

The x-coordinate of point A is -4.

The distance between point A and point B is 10 units.

To find:

The possible coordinates of point A.

Solution:

Let the y-coordinate of point A be y. Then the two points are A(-4,y) and B(4,1).

Distance formula:

$D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

The distance between point A and point B is 10 units.

$\sqrt{(4-(-4))^2+(1-y)^2}=10$

Taking square on both sides, we get

$(8)^2+(1-y)^2=100$

$(1-y)^2=100-64$

$(1-y)^2=36$

Taking square root on both sides, we get

$(1-y)=\pm \sqrt{36}$

$-y=\pm 6-1$

$y=1\mp 6$

$y=1-6$ and $y=1+6$

$y=-5$ and $y=7$

Therefore, the possible coordinates of point A are either (-4,-5) or (-4,7).

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3 years ago