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DENIUS [597]
3 years ago
12

What’s -2f-3=7 I cant figure it out

Mathematics
2 answers:
iVinArrow [24]3 years ago
8 0

Answer:

12

Step-by-step explanation:

-2f-3=7

+2f-3=7+2

f-3=9

f+3=9+3

f=12

i think

vampirchik [111]3 years ago
3 0

Answer:

f=-5 heres a tip use m a t h w a y it'll save your life with math homework

Step-by-step explanation:

-2f-3=7 is a two step equation

add 3 to both sides giving you -2f=10

then divide each side by -2 to get the f alone

f=-5 and theres your answer

I hope this helps you :)

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In the interval 0 x 360 find the values of x for which cos x =0.7252
Sergeeva-Olga [200]

Answer:

x_1 = 43.5145\°

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Step-by-step explanation:

We have a positive value for the cosine of x, so we know that the value of x should be in the first quadrant (0 ≤ x ≤ 90) or in the fourth quadrant (270 ≤ x ≤ 360).

Now, let's find the value of x that gives cos(x) = 0.7252 using the inverse function of the cosine, that is, the arc cosine function.

The value of x can be calculated using:

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Using this function in a calculator (you may find it as: cos^{-1}(x)), we have that:

x_1 = 43.5145\°

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x_2 = 360\° - 43.5145\° = 316.4855\°

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