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1 year ago

What does the symbol bc represent

Mathematics

1 answer:

Georgia [21]1 year ago

8 0

Answer:

ray BC

Step-by-step explanation:

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A sculptor wants to create a statue. she goes to a quarry to buy a block of marble. she finds a chip of marble on the ground. th

Kryger [21]

we know that

the volume of the chip is 15.3 cm^3. the mass of the chip 14.3 grams

Step 1

Find the volume of a block of marble 30.0-by-40.0-by 100.0 cm

the volume is equal to

$V=30*40*100=120,000\ cm^{3}$

Step 2

Find the mass of a block of marble

by proportion

$\frac{14.3}{15.3}\frac{gr}{cm^{3}} = \frac{x}{120,000}\frac{gr}{cm^{3}}\\\\ 15.3*x=120,000*14.3\\\\x= \frac{120,000*14.3}{15.3}$

$x=112,156.9\ gr$

therefore

<u>the answer is</u>

$112,156.9\ gr$

4 0

3 years ago

Need this today, thanks!

otez555 [7]

Answer:

Step-by-step explanation:

just click on the photo down bellow

right here

6 0

3 years ago

Please help me out :P

Veseljchak [2.6K]

cos θ = $\frac{-4\sqrt{65} }{65}$ , sin θ = $\frac{-7\sqrt{65} }{65}$ , cot θ = 4/7, sec θ = $\frac{-\sqrt{65} }{4}$ , cosec θ = $\frac{-\sqrt{65} }{7}$

<h3>What are trigonometric ratios?</h3>

Trigonometric Ratios are values of all the trigonometric functions based on the value of the ratio of sides in a right-angled triangle.

Sin θ: Opposite Side to θ/Hypotenuse

Tan θ: Opposite Side/Adjacent Side & Sin θ/Cos

Cos θ: Adjacent Side to θ/Hypotenuse

Sec θ: Hypotenuse/Adjacent Side & 1/cos θ

Analysis:

tan θ = opposite/adjacent = 7/4

opposite = 7, adjacent = 4.

we now look for the hypotenuse of the right angled triangle

hypotenuse = $\sqrt{7^{2} + 4^{2} }$ = $\sqrt{49+16}$ = $\sqrt{65}$

sin θ = opposite/ hyp = $\frac{7}{\sqrt{65} }$

Rationalize, $\frac{7}{\sqrt{65} }$ x $\frac{\sqrt{65} }{\sqrt{65} }$ = $\frac{7\sqrt{65} }{65}$

But θ is in the third quadrant(180 - 270) and in the third quadrant only tan and cot are positive others are negative.

Therefore, sin θ = - $\frac{7\sqrt{65} }{65}$

cos θ = adj/hyp = $\frac{4}{\sqrt{65} }$

By rationalizing and knowing that cos θ is negative, cos θ = - $\frac{-4\sqrt{65} }{65}$

cot θ = 1/tan θ = 1/7/4 = 4/7

sec θ = 1/cos θ = 1/ $\frac{4}{\sqrt{65} }$ = - $\frac{-\sqrt{65} }{4}$

cosec θ = 1/sin θ = 1/ $\frac{\sqrt{65} }{7}$ = $\frac{-\sqrt{65} }{7}$

Learn more about trigonometric ratios: brainly.com/question/24349828

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2 years ago

What is the best unit to describe the rate at which water flows through a household faucet

andrew11 [14]

The answer should be gallons per minute

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4 years ago

Solve the following equation. then place the correct number in the box provided. 2x + 1 < 9

allsm [11]

I think the answer is 4

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3 years ago