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3 years ago

An archaelogist in Turkey discovers a spear head that contains 27% of its original amount of C-14.

Mathematics

1 answer:

Ostrovityanka [42]3 years ago

4 0

<span>The correct answer is 13093 without any decimal points or commas.
</span>Hope I helped!

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Find the hypotenuse of a RIGHT triangle with a base of 11cm and a

MariettaO [177]

Answer:

Step-by-step explanation:

do the right first

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3 years ago

How do you find a missing side of a triangle using SOH CAH TOA

katrin2010 [14]

Answer:

See explanation and attachment

Step-by-step explanation:

SOH CAH TOA is a mnemonic.

SOH means $\sin \theta=\frac{Opposite}{Hypotenuse}$

CAH means $\cos \theta =\frac{Opposite}{Hypotenuse}$

TOA means $\tan \theta=\frac{Opposite}{Adjacent}$

Given an angle and a side of a right angle triangle, you can use the appropriate ratio to find the missing side.

For instance, find x in the diagram in the attachment.

In this case the best ratio to use is TOA.

$\tan 60\degree=\frac{\sqrt{3} }{x}$

$\implies x=\frac{\sqrt{3} }{\tan 60}$

$x=\frac{\sqrt{3} }{\sqrt{3} } =1$

All the other ratio also follow the same pattern

NB: Your calculator in degree should give $\tan 60\degree=\sqrt{3}$

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3 years ago

Find the value of −12 + 8 −(−9). Question 20 options: 5 −13 −5 13

larisa86 [58]

Answer:

-12 + 8 = -4

-4 - (-9) = -4 + 9 = 5

Step-by-step explanation:

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3 years ago

Find the distance between P1(1, -91°) and P2(3, 335°) on the polar plane.

Dmitrij [34]

Answer:

2.749

Step-by-step explanation:

Use the polar distance formula:

$\sqrt{r_{1}^{2}+{r_{2}^{2}-2 r_{1} r_{2}cos(theta_{1} -theta_{2})$

$\sqrt{10^{2}+{3^{2}-2(1) (3)cos(225-(-91))$

2.749

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3 years ago

When a number is decreased by 3%, the result is 80. What is the original number to the nearest tenth?

zzz [600]

Answer:

Step-by-step explanation:

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3 years ago