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3 years ago

HELP!!!! CLICK ON THE PICTURE! THANK YOU

Mathematics

1 answer:

zloy xaker [14]3 years ago

7 0

19/25 is the answer
hope i helped!

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Wirte the expression the quotient of the quantity k minus 8 and m

umka21 [38]

Answer:

k - m - 8

Step-by-step explanation:

pretty sure you just move the -8 to the back.

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3 years ago

Kevin can travel 22 1/2 miles in 1/3 hour .What is the average speed in miles per hour?

pochemuha

He would travel 67 1/2 miles in an hour.

3 0

3 years ago

Make y the subject of the formula.

3241004551 [841]

Answer:

Step-by-step explanation:

because it is the correct one

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3 years ago

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Find the exact value of the given expression.<br> sin(2cos^-1(5/13))

xeze [42]

Answer:

+120/169 or -120/169

Step-by-step explanation:

let $cos^{-1}[\frac{5}{13} ] = \alpha$

where, alpha is some angle that satisfies the assumed condition.

so, $cos\alpha= 5/13$

[ taking cos to the other side or applying cos on both sides]

now, substitute this in the given expression

$sin(2cos^-1(5/13)) = sin(2\alpha )$

as sin $\beta$ = $+ or -\sqrt{1-(cos\beta) ^{2}$

[by general trigonometry formula: $cos^{2}[\beta] +sin^{2}[\beta]=1$ ]

so if $cos\alpha= 5/13$ , we can get sin $\alpha$ from the above formula as + or - 12/13

(because, after taking square root on both sides we keep + or -]

as, sin $2\beta = 2*sin[\beta ]*cos[\beta ]$

[by general trigonometry formula]

here, now $sin[2\alpha ]=2*(+or- 12/13)*5/13\\$

so, the final value can be 120/169 or -120/169.

4 0

3 years ago

38% of what number is 57

boyakko [2]

You can get the answer by dividing the number 57 by the decimal of the percent thirty-eight (.38), you see you multiply a decimal by a number or a number by a decimal to get a smaller number, whereas dividing like you do here gets and bigger number. ( In this case the answer to your question) So in conclusion 57 divided by .38 = 150, your answer.

7 0

3 years ago