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OlgaM077 [116]
3 years ago
9

Please do these no fake stuff please. Click on the paperclip to see problems.

Mathematics
1 answer:
inessss [21]3 years ago
6 0

Answer:

Which problems ?

Step-by-step explanation:

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In order to apply the law of sines to find the length of the side of a triangle, it is enough to know which of the following?
larisa86 [58]

Answer:

We must have two angles and a side.

A is the correct option.

Step-by-step explanation:

For any triangle ABC,  the law of sine is given by

\frac{a}{\sin A}=\frac{b}{\sin B}=\frac{c}{\sin C}

From this formula it is clear that in order to find the length of the side of the triangle, we must have two angles and a side.

Let us understand this by assuming that we need to find a (length of the side). From the formula, we have

\frac{a}{\sin A}=\frac{b}{\sin B}\\\\a=\frac{b\sin A}{\sin B}

Thus, to find the length a, we must have b, sin A and sin B.

Hence, o find the length of the side of the triangle, we must have two angles and a side.

3 0
3 years ago
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I need help with this !!! I’ll give brainliest!!!! (_/~15~)2 !!!! Look at picture please!!
antoniya [11.8K]

Answer:

15

Step-by-step explanation:

a square root multiplied by itself equals the number inside the box, right?

(/~15~)2 = 15

3 0
3 years ago
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Write in Standard Form:<br><br> 9a^2 + 5 = 0
Levart [38]

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

Answer:

It is in standard form!!!

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<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

4 0
2 years ago
How to sketch the solutions to each. systems of inequalities
zloy xaker [14]
It depends what inequality you have
4 0
3 years ago
Why the systems must have the same solution?system(a)4x-5y=13.....3x+6y=11........system(b) 8x-10y=26.....x-11y=2.........AKA QU
Y_Kistochka [10]
When you add the equations in (a) you get 7x+y=24.

When you subtract the equations in (b) you also get 7x+y=24.

That means to solve both systems you can work with the same equation. However that is not enough. We must have two equivalent equations. We found only one.

Notice however that in the (b) we can take the first equation and divide every term by 2. When we do this we get 4x-5y=13. That’s the first equation in (a).

So both systems can be solved by working with the same two equations. These are 5x-5y=13 and 7x+y=24. And since we have two equations and two unknowns (the number of equations matches the number of variables) there is only one solution — one x and y that would make both systems true — solve both systems.

Basically we showed the systems are equivalent!
3 0
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