3 years ago

Help again 14 more questions

Mathematics

1 answer:

MArishka [77]3 years ago

5 0

Answer:

A certain element has 25 protons.

Step-by-step explanation:

Please mark brainliest

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Can someone help me?

mestny [16]

Answer:

Step-by-step explanation:

To do this, we must use the unit circle. At the angle $\frac{\pi }{6}$ the coordinate pair is ( $\frac{\sqrt{3} }{2}$ , $\frac{1}{2}$ ) and the hypotenuse is 1

Now that we know these we can start using the trig functions

sin = y

cos = x

tan = $\frac{y}{x}$

And the other functions would be the reciprocal of these

csc = $\frac{1}{y}$

sec = $\frac{1}{x}$

cot = $\frac{x}{y}$

This would mean that

sinx = $\frac{1}{2}$

cosx = $\frac{\sqrt{3} }{2}$

tanx = $\frac{1}{\sqrt{3} }$ or $\frac{\sqrt{3} }{3}$ if you're supposed to rationalize your denominators

cscx = 2

secx = $\frac{2}{\sqrt{3} }$ or $\frac{2\sqrt{3} }{3}$

cot = $\sqrt{3}$

6 0

3 years ago

A box contains 5 red balls, 7 green balls, and 6 yellow balls. In how many ways can 6 balls be chosen if there should be 2 balls

Nostrana [21]

Answer:

12 balls

Step-by-step explanation:

take 3 red balls ,5 green balls and 4 yellow balls that 12 balls = 6 balls in bag

5 0

3 years ago

His triangle has a perimeter of 48 feet. The second side is 5 feet longer than the first side. The third side is 3 feet longer t

kotegsom [21]

Answer:

The length of the second side is 22.5 feet.

Step-by-step explanation:

7 0

3 years ago

What is the place value of the number 8 in the number 814,295

VLD [36.1K]

The place value is a hundred thousand, as there are 5 digits following the eight.

3 0

3 years ago

Tickets for a concert cost $29. 00. The greatest number of tickets one person can buy is 9.If 28 peopleeach buy 9 tickets for $2

Blababa [14]

Answer: 7,308

Step-by-step explanation: 28 X 9 = 252

252 X 29 = 7,308

6 0

3 years ago

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