2 years ago

Which graph shows a system of equations with infinitley many solutions

Mathematics

1 answer:

Zielflug [23.3K]2 years ago

5 0

Answer:

where are the equation I don't see them

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Which of the following is the graph of f(x) = 3 sin (2x)? (2 points)

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What is the length of line segment KJ?

Karolina [17]

Please consider the attached file.

We can see that triangle JKM is a right triangle, with right angle at M. Segment KM is 6 units and segment MJ is 3 units. We can also see that KJ is hypotenuse of right triangle.

We will use Pythagoras theorem to solve for KJ as:

$KJ^2=KM^2+MJ^2$

$KJ^2=6^2+3^2$

$KJ^2=36+9$

$KJ^2=45$

Now we will take positive square root on both sides:

$\sqrt{KJ^2}=\sqrt{45}$

$KJ=\sqrt{9\cdot 5}$

$KJ=3\sqrt{5}$

Therefore, the length of line segment KJ is $3\sqrt{5}$ and option D is the correct choice.

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3 years ago

Select the expression that is equal to (-2x +9) – (3x – 4).

Anna [14]

Answer:

Step-by-step explanation:

(-2x+9-3x-4)

-2x-3x+9-4

-5x+5

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2 years ago

Bengus the expert blacksmith forged 32 swords from copper, twice as many swords from iron, and 19 swords from mythril. Estimate

Anna35 [415]

Answer: 115 swords

Step-by-step explanation:

He forged 32 swords from copper, 2*32 from iron and 19 from mythril. Thus, he forged 32+(32*2)+19, or 32+64+19, or 115 swords.

<em>Hope it helps <3</em>

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3 years ago