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2 years ago

10

The square of a number minus 14

1 answer:

sp2606 [1]2 years ago

4 0

Answer:

-196

explain: √3.742 - 14 = -196

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Convert 0.00049 to scientific Notation

BartSMP [9]

I think its 4.9 x 10-4

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3 years ago

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3x7x7x7x7 in index notation 2x9x9x9x2x9plz helpthx

Alex777 [14]

The answer to the question

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3 years ago

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Solve the equation on the interval [0, 2pi): 12cos^2 x-9=0<br><br><br> What to do?

siniylev [52]

Answer:

$\large\boxed{x=\dfrac{\pi}{6}\ \vee\ x=\dfrac{5\pi}{6}\ \vee\ x=\dfrac{7\pi}{6}\ \vee\ x=\dfrac{11\pi}{6}}$

Step-by-step explanation:

$12\cos^2x-9=0\qquad\text{add 9 to both sides}\\\\12\cos^2x=9\qquad\text{divide both sides by 12}\\\\\cos^2x=\dfrac{9}{12}\\\\\cos^2x=\dfrac{9:3}{12:3}\\\\\cos^2x=\dfrac{3}{4}\to\cos x=\pm\sqrt{\dfrac{3}{4}}\\\\\cos x=\pm\dfrac{\sqrt3}{2}\\\\\text{Look at the picture}\\\\x=\dfrac{\pi}{6}\ \vee\ x=\dfrac{5\pi}{6}\ \vee\ x=\dfrac{7\pi}{6}\ \vee\ x=\dfrac{11\pi}{6}$

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3 years ago

Martina begins a five at sea level. She dives down 20 feet, and then rises 7 feet. She dives again, going down 9 more feet. How

mojhsa [17]

Answer:

<h2>22<em> </em><em>feet</em><em> </em><em>below</em></h2>

Step-by-step explanation:

<h2>Total down 20+9=29</h2><h2>Total up =7</h2><h2>Net = 29-7=22feet</h2>

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3 years ago

Please only answer if you know

marusya05 [52]

Answer:

A, C

Step-by-step explanation:

A.)

32 / 8 * 5.25 ----> 4 * 5.25 ----> 21

C.)

4 * 12.5 / 2----> 49 / 2 ----> 24.5

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3 years ago

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