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k0ka [10]
3 years ago
8

I need help on khan academy and I’m willing to pay half right when you start the work and when you finish all the work I’ll pay

the other half. I am desperate if I don’t pass this class it’s bad for me. Comment your number,snap anything. If not can you please help me with this one problem please thank youu

Mathematics
1 answer:
harina [27]3 years ago
5 0

Answer:

x\approx 50^\circ

Step-by-step explanation:

c^2 = a^2 + b^2 - 2ab(cos(C))

See the figure below to get the values as:

7^2=7^2+9^2-2\left(7\right)\left(9\right)cos\left(x\right)\\\\cos(x)=\frac{7^2+9^2-7^2}{2\cdot \:7\cdot \:9}\\\\x\approx 50^\circ

There are multiple concepts to solve this problem. This is one of the concept used in high school. Other concept to solve this problem is to use the concept of isosceles triangle. An isosceles triangle is a triangle with (at least) two equal sides. The angles shared by the two equal sides are also equal. So that the sum of all the three angles will add up to 180.

x+x+80=180\\\\2x=100\\\\x=50^{\circ}

Best Regards!

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Answer:

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7 0
2 years ago
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stira [4]

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You can tell whether or not something is positive or negative by looking at the specific number for example if you look at this number -5 you know its a negative number because it has a - sign.Although when its positive it does not have any kind of format of signs according to my calculations.

Hope this helps!

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2 years ago
In a function, y varies inversely with x. The consistent of variation is 4. Which table could represent the function?
lianna [129]

Answer:

none of the tables shown

Step-by-step explanation:

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xy = 4

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In the middle table

-2 * -8 = 16  so it is not the middle table

In the bottom table

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2 years ago
So do yall know this?
ddd [48]

Answer:

Length: meter

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Time: second

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Please help me with this question :)​
just olya [345]

Answer:

3rd option.

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move 2 to the other side of the equation.

|k| = \frac{20}{2}

k = 10

8 0
3 years ago
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