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3 years ago

1 /4 of a number decreased by 5 is 19 what is the number

Mathematics

1 answer:

tankabanditka [31]3 years ago

5 0

Answer:

Step-by-step explanation:

1/4x - 5 = 19

1/4x = 24

24 x 4 = 96

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What is the probability of getting this question correct? (Brainliest Answer will be given to the first correct response with a

butalik [34]

If a question has four possible answers, and you are strictly guessing regarding which of them is correct, then the chances of your choosing the correct one from the four is 1 in 4, or 0.25.

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3 years ago

Find the exact value of cos theta, given that sin thetaequalsStartFraction 15 Over 17 EndFraction and theta is in quadrant II.

vova2212 [387]

Answer:

$cos \theta = -\frac{8}{17}$

Step-by-step explanation:

For this case we know that:

$sin \theta = \frac{15}{17}$

And we want to find the value for $cos \theta$ , so then we can use the following basic identity:

$cos^2 \theta + sin^2 \theta =1$

And if we solve for $cos \theta$ we got:

$cos^2 \theta = 1- sin^2 \theta$

$cos \theta =\pm \sqrt{1-sin^2 \theta}$

And if we replace the value given we got:

$cos \theta =\pm \sqrt{1- (\frac{15}{17})^2}=\sqrt{\frac{64}{289}}=\frac{\sqrt{64}}{\sqrt{289}}=\frac{8}{17}$

For our case we know that the angle is on the II quadrant, and on this quadrant we know that the sine is positive but the cosine is negative so then the correct answer for this case would be:

$cos \theta = -\frac{8}{17}$

5 0

3 years ago

What is the missing angle

Zielflug [23.3K]

55°

Step-by-step explanation:

110+15+x =180

x = 180 - 125

x = 55°

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2 years ago

Read 2 more answers

You are charged 6.5% tax on a 42% purchase. Find the amount of tax

Rus_ich [418]

Assuming you means 6.5% tax of a $42 purchase

0.065*42=2.73

tax is $2.73

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3 years ago

M ∠4 = 2x°, m ∠2 = (4/3)x°, m ∠3 = 20°, find x.

anygoal [31]

The answer is c, b/c...

20+(4/3)x=2x

-(4/3)x -(4/3)x

20=(2/3)x

20/(2/3)=(2/3)x/(2/3)

A: 30=x

7 0

4 years ago