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Law Incorporation [45]
3 years ago
11

the equation cos-1 3.4/10 =x can be used to determine the measure of angle BAC. What is the degree of measure angle BAC? Round t

o the nearest whole degree.

Mathematics
2 answers:
lozanna [386]3 years ago
8 0

Answer:

<BAC= 70 degrees.

Step-by-step explanation:

The given equation to find angle BAC that is x is :

x=cos^{-1} \frac{3.4}{10}

Or ,x=cos^{-1} 0.34

Using calculator to find the arc of cosine0.34 we have :

x=70.1231

This when rounded to nearest whole degree is 70 degrees.

<BAC= 70 degrees.

Mashcka [7]3 years ago
4 0

Answer:

70°

Step-by-step explanation:

x = cos^{-1}(\frac{3.4}{10}) ≈ 70°


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Y=x +5<br> 5x + 2y=1<br><br> Can you show the steps thanks
lubasha [3.4K]

Answer:

(-9/7,-26/7)

[more detailed at the bottom of the explanation]

Step-by-step explanation:

I am assuming that this is a system of equations...

So, knowing that y is equal to x + 5, you would plug that in the second equation and find x. Then you would plug x and find y.

—————

Step 1)

Equation 1:

y = (x + 5)

Equation 2:

5x + 2y = 1

Equation 2 can also be written as:

5x + 2(x+5) = 1

I wrote x+5 instead of y because the first equation tells us that y is equal to x + 5.

—————

Step 2)

Solve for x .

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—————

Step 3)

Plug the x value back in the first equation.

y = -9/7 + 5

y = -26/7

—————

Solution:

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In ordered pair form:

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————— ————— —————

Hope this helps !!!!!!!

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Step-by-step explanation:

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