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satela [25.4K]
3 years ago
14

Please help me answer these questions I don’t know.

Mathematics
1 answer:
klemol [59]3 years ago
6 0

Answer:

1.

y = -3x -3 (the graph is a straight line)

m = -3

b = -3

y = 2x + 2

m = 2

b = 2

2.

2x - y = 6

x + y = 6

_______

3x = 12

3x/3 = 12/3

x = 4

Plug x into the equation to solve for y.

2(4) - y = 6

8 - y = 6

- y = 6 - 8

- y = -2

y = 2

Your solution is ( 4, 2).

3. No the solution is ( 10 , -11/2)

- 2x - 4y = 2

3x + 4y = 8

__________

x = 10

- 2 (10) - 4y = 2

- 20 - 4y = 2

- 4y = 22

- 4y/ 4 = 22/4

y = -11/2

Bonus:

4x + 3 ( 1787 - x) = 5792

4x + 5361 - 3x = 5792

x + 5361 = 5792

x = 431 (reserved seat tickets)

Minus 1787 with 431 which is 1,356 general admission tickets.

Answer: 431 reserved seat tickets and 1,356 general admission tickets!

Hope this helps!





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Im being lazy hewp pwease :(
aalyn [17]

Answer:

(-3,0)

Step-by-step explanation:

the vertex is where the quadratic function reaches its maximum or minimum height and as you can see on this graph the maximum height of this equation is at the (-3,0) point meaning that (-3,0) is the vertex

5 0
2 years ago
What is the scale factor of triangle ABC to DEF ?
bekas [8.4K]

Answer:  The correct option is (A). 3.

Step-by-step explanation:  We are given to find the scale factor of dilation from ΔABC to ΔDEF.

As shown in the figure, the lengths of the sides of ΔABC to ΔDEF are

AB = 5 units, BC = 4 units, CA = 3 units,

DE = 15 units, EF = 12 units, FD = 9 units.

We know that the scale factor is given by

S=\dfrac{\textup{length of a side of the dilated figure}}{\textup{length of the corresponding side of the original figure}}.

Therefore, the scale factor of dilation from from ΔABC to ΔDEF is

S=\dfrac{DE}{AB}=\dfrac{15}{5}=3.

Thus, the required scale factor is 3.

Option (A) is correct.

8 0
3 years ago
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Can you explain triangle congruence therom
Nesterboy [21]
There are five ways to find if two triangles are congruent: SSS, SAS, ASA, AAS and HL.
SSS (side, side, side) SSS stands for "side, side, side" and means that we have two triangles with all three sides equal. ...
SAS (side, angle, side) ...
ASA (angle, side, angle) ...
AAS (angle, angle, side) ...
HL (hypotenuse, leg)

Please visit this site for further information:
http://www.mathsisfun.com/geometry/triangles-congruent-finding.html
4 0
3 years ago
Two similar pyramids have lateral areas 20ft2 and 45ft2. The volume of the smaller pyramid is 8ft3.
Artemon [7]
Let the ratio between 2 of them be a/b. The volume of the larger one is x (ft^3) 
<span>(a/b)^2 = 20/45 = 4/9 ---> a/b = 2/3 </span>
<span>(a/b)^3 = 8/x </span>
<span>8/x = (2/3)^3 = 8/27 ---> x = 27 (ft^3) </span>
5 0
2 years ago
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I cant find the right answer please help me.
Alborosie

\frac{g}{f} = \frac{x^{2}- 5}{4x + 1}

since the denominator cannot equal 0, then 4x + 1 ≠ 0  ⇒  4x ≠ -1   ⇒   x ≠ \frac{-1}{4}

Answer: C

6 0
3 years ago
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