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77julia77 [94]
3 years ago
5

What is the cosine of 30?

Mathematics
2 answers:
yaroslaw [1]3 years ago
4 0
The correct answer is A
shutvik [7]3 years ago
3 0
The answer is A. sqrt3 / 2
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Which tables display linear functions? Check all that apply
Margarita [4]

Answer:

the 1st and 4th

Step-by-step explanation:

8 0
3 years ago
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Find the length of the missing side of the triangle below<br><br><br><br> PLEASE HELPP!!
melisa1 [442]

To find the length of the missing side, you can use the Pythagorean Theorem, which you can only use for right triangles.

Pythagorean Theorem:  a² + b² = c²

[ c is the hypotenuse or the longest side of the triangle, and a and b are the other sides, I think it doesn't matter which side ]

Plug in what you know:

b = 8

c = 14

a² + b² = c²

a² + (8)² = (14)²

a² + 64 = 196       Subtract 64 on both sides

a² = 132       Square root both sides to get "a" by itself

\sqrt{a^2} =\sqrt{132}

a = \sqrt{132} inches

If you need to simplify more, you need to find two numbers that multiply to = 132 where one of them can be square rooted, to do so you can list the greatest common factors of 132

132: 1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132

The only number that can be square rooted is 4, so you can do:

a=\sqrt{4*33}

a=\sqrt{4} *\sqrt{33}

a=2\sqrt{33}

6 0
3 years ago
Simplify the following expression 9v^2(v^2+3v-4)
Anvisha [2.4K]

The answer would be 9v ^4 + 27v ^3 - 36v^2

Step-by-step explanation:

You first would multiply each term in the parenthesis by 9v^2

9v^2 (v^2) + 9v^2 (3v) - 9v^2 (4)

After this you combine the like terms

9v^2 * v^2 is 9v^4

9v^2  * 3v is 27v^3

-9v^2 * 4 is -36v^2

Because you can not simplify it any smaller, this is your final answer

3 0
3 years ago
A plus 5 is the side of an equilateral triangle. find it's perimeter
Bezzdna [24]
A+5 = 1 side, so the perimeter is 3(a+5) or P = 3a+15
6 0
3 years ago
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On a snow day, Jada created two snowmen in her yard. Snowman A was built to a height of 51 inches and Snowman B was built to a h
MaRussiya [10]

From the graph of the linear functions, we have that both snowman's will have the same height of 21 inches after 5 hours.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

For this problem, we have that:

  • The initial height is the intercept.
  • The melting rate, as a negative, is the slope.

Hence the functions are given as follows:

  • A(t) = 51 - 6t.
  • B(t) = 36 - 3t.

The functions are graphed at the end of the answer, with <u>A(t) in red and B(t) in blue,</u> and they intersect at (5,21), meaning that both snowman's will have the same height of 21 inches after 5 hours.

More can be learned about linear functions at brainly.com/question/24808124

#SPJ1

7 0
1 year ago
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