3 years ago

Estimate 15 5/6 - 2 1/5 leave with difference

Mathematics

1 answer:

tamaranim1 [39]3 years ago

8 0

The answer is 20 6/0-2 0/10

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Solve for x in the given interval.<br><br> sec x= -2√3/3, for π/2 ≤x≤π

drek231 [11]

Answer:

b. $x=\frac{5\pi}{6}$

Step-by-step explanation:

The given function is

$\sec x=-\frac{2\sqrt{3} }{3},\:\:for\:\:\frac{\pi}{2}\le x \le \pi$

Recall that the reciprocal of the cosine ratio is the secant ratio.

This implies that;

$\frac{1}{\cos x}=-\frac{2\sqrt{3} }{3}$

$\Rightarrow \cos x=-\frac{3}{2\sqrt{3} }$

$\Rightarrow \cos x=-\frac{\sqrt{3}}{2}$

We take the inverse cosine of both sides to obtain;

$x=\cos^{-1}(-\frac{\sqrt{3}}{2})$

$x=\frac{5\pi}{6}$

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3 years ago

Which of the following is the correct way to write seventy million as a numeral?

Inessa05 [86]

Which of the following is the correct way to write seventy million as a numeral?

As I see no choices the right way to write seventy million as a numeral is

$70,000,000$

Hope I helped!

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4 years ago

9 boys can paint a basketball court in 3 hours how long should 1 boy take working at the same rate

GaryK [48]

1 boy can work about 0.3 hours
i think that’s the answer,but good luck

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3 years ago

On an average day, 105 books are published in the United States. About how many books would be published in the month of Februar

zvonat [6]

About 3,000 books because 105 * 28 = 2940
and 2940 rounded to the nearest thousand is 3000. Hope this helps.

3 0

3 years ago

Read 2 more answers

In a class, 42 students, there are 8 more boys than girls write and solve a system of 3 equations

zhenek [66]

Answer:

x = 17

Step-by-step explanation:

x + x + 8 = 42 because x = boys and x + 8 = girls

2x = 34 because 2x = 42 - 8

x = 17

i hope this helps! you don't need the 2x = 42 - 8 to be an equation ;)

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3 years ago