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2 years ago

HELPEHEGEDHGDGXCCVCCXVV

Mathematics

1 answer:

ratelena [41]2 years ago

3 0

Step-by-step explanation:

1) 7x+3y=19

2)2x-7y=12

3) x=5, y=0

4) x=15/2, y=(-63/4)

5) x=9, y=92

6) x=(-2) , y=(-9)

7) x=5, y=(-2)

8) x=2, y=2

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Pleas help!!!! Brainliest and points!!

andreev551 [17]

Answer:

Step-by-step explanation:

Hi!

Here is the formula for point slope form: y-y1=m(x-x1)

Our slope in this case is 5, and our points are (1, 9). 1(x1) and 9(y1)

So, if we substitute our given data into the formula, here is what we will get.

y-9=5(x-1)

Thus, our answer should be:

y-9=5(x-1)

I hope this helps!

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2 years ago

Read 2 more answers

Using the x intercept method what are all the real solutions of the equation x^3-8x^2+9x+18=0

Paul [167]

Give me an idea of what you think?

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3 years ago

The horizontal line segment at the top of the polygon on the grid below is how many units long?

Ymorist [56]

Answer:

6 units long.

Step-by-step explanation:

Given:

A polygon drawn on a graph.

In order to determine the distance of the horizontal line at the top, we find the coordinates of the end points and then use distance formula to find the exact distance.

Let us label the polygon as ABCD as shown below. AB is the length of the horizontal line.

Coordinates of A are $(x_1,y_1)=(-3, 4)$ as seen in the graph.

Coordinates of B are $(x_2,y_2)=( 3, 4)$ as seen in the graph.

Now, distance formula for two points $(x_1,y_1)\ and\ (x_2,y_2)$ is:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\d_{AB}=\sqrt{(3-(-3))^2+(4-4)^2}\\d_{AB}=\sqrt{(3+3)^2+0}\\d_{AB}=\sqrt{36}=6\ units$

Therefore, the horizontal line at the top is 6 units long.

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3 years ago

A car travels at a speed of 25 miles per hour for t hours

Pepsi [2]

Answer: 25t+45m

Step-by-step explanation:

Really simple because if they traveled 25mi/h for t hours, that makes it 25t miles. They traveled 45mi/h for m hours so it's 45m. If you add them together, 25t+45m.

If this helped, brainliest please.

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2 years ago

A circular coaster has a diameter of 5 inches. What is its area? write your answer using π.

Verizon [17]

Answer:

Step-by-step explanation:

Diameter=5 inches

Area= π $r^{2}$

<u>r is the radius of coaster.</u>

<u>Radius=diameter/2</u>

Substitute the value of D:

r=5/2

Now

Area=π $\frac{5}{2} ^{2}$

Area=π( $\frac{25}{2}$ )

Area=12.5π sq.inches

<h3><u>If you need to ask any questions, please let me know.</u></h3>

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2 years ago