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vichka [17]
3 years ago
10

WILL GIVE BRAINLIEST!!!

Mathematics
1 answer:
tamaranim1 [39]3 years ago
6 0

Answer:

The correct answer is D

Step-by-step explanation:

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Find the value of in the triangle shown below.<br> 13<br> 12<br> X
Lynna [10]

Answer:

D) 5

Step-by-step explanation:

a²+b²=c²

12²+b²=13²

144+b²=169

b²=169-144

b²=25

b=√25

b=5

5 0
3 years ago
Given that 16 ounces equals 1 pound, how many ounces are in 8.9 pounds
pishuonlain [190]
Hi,
About 142.4 is the answer!

I hope this helped!
5 0
3 years ago
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 Find sin2x, cos2x, and tan2x if sinx=-15/17 and x terminates in quadrant III
vodka [1.7K]

Given:

\sin x=-\dfrac{15}{17}

x lies in the III quadrant.

To find:

The values of \sin 2x, \cos 2x, \tan 2x.

Solution:

It is given that x lies in the III quadrant. It means only tan and cot are positive and others  are negative.

We know that,

\sin^2 x+\cos^2 x=1

(-\dfrac{15}{17})^2+\cos^2 x=1

\cos^2 x=1-\dfrac{225}{289}

\cos x=\pm\sqrt{\dfrac{289-225}{289}}

x lies in the III quadrant. So,

\cos x=-\sqrt{\dfrac{64}{289}}

\cos x=-\dfrac{8}{17}

Now,

\sin 2x=2\sin x\cos x

\sin 2x=2\times (-\dfrac{15}{17})\times (-\dfrac{8}{17})

\sin 2x=-\dfrac{240}{289}

And,

\cos 2x=1-2\sin^2x

\cos 2x=1-2(-\dfrac{15}{17})^2

\cos 2x=1-2(\dfrac{225}{289})

\cos 2x=\dfrac{289-450}{289}

\cos 2x=-\dfrac{161}{289}

We know that,

\tan 2x=\dfrac{\sin 2x}{\cos 2x}

\tan 2x=\dfrac{-\dfrac{240}{289}}{-\dfrac{161}{289}}

\tan 2x=\dfrac{240}{161}

Therefore, the required values are \sin 2x=-\dfrac{240}{289},\cos 2x=-\dfrac{161}{289},\tan 2x=\dfrac{240}{161}.

7 0
3 years ago
Whats is a unit rate
Blizzard [7]
Unit rate is used to compare quantities in which the second quantity is one. Common examples of unit rate would include, miles per hour earnings per hour cost per gallon.
6 0
3 years ago
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In ΔXYZ, the measure of ∠Z=90°, the measure of ∠X=57°, and XY = 8 feet. Find the length of YZ to the nearest tenth of a foot.
Zolol [24]

Answer:

21

Step-by-step explanation:

6 0
3 years ago
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