2 years ago

Answer soon!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

NemiM [27]2 years ago

3 0

Answer:

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Step-by-step explanation:

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Ida is walking dogs to help pay for sports equipment. She gets paid $10 for every dog walked and made a total of $70 on Saturday

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A because x next to ten represents the amount of dogs that she walked

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2 years ago

If sin(x) = 5/13, and x is in quadrant 1, then tan(x/2) equals what?

Rufina [12.5K]

$x$ is in quadrant I, so $0$ , which means $0$ , so $\dfrac x2$ belongs to the same quadrant.

Now,

$\tan^2\dfrac x2=\dfrac{\sin^2\frac x2}{\cos^2\frac x2}=\dfrac{\frac{1-\cos x}2}{\frac{1+\cos x}2}=\dfrac{1-\cos x}{1+\cos x}$

Since $\sin x=\dfrac5{13}$ , it follows that

$\cos^2x=1-\sin^2x\implies \cos x=\pm\sqrt{1-\left(\dfrac5{13}\right)^2}=\pm\dfrac{12}{13}$

Since $x$ belongs to the first quadrant, you take the positive root ( $\cos x>0$ for $x$ in quadrant I). Then

$\tan\dfrac x2=\pm\sqrt{\dfrac{1-\frac{12}{13}}{1+\frac{12}{13}}}$

$\tan x$ is also positive for $x$ in quadrant I, so you take the positive root again. You're left with

$\tan\dfrac x2=\dfrac15$

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3 years ago

57.4 divided by 10???????

Gnesinka [82]

57.4/10=5.74
the answer is 5.74

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Julia spends $7.25 on gas for her lawn mower. She earns $12.00 mowing her neighbor's yard. What is Julia's profit? Julia earned

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To get julia's profit you will have to subtract the amount she spent on gas from the amount she was paid $12.00-$7.25=$4.75

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