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BARSIC [14]
3 years ago
13

What is cos 30°? 60° 1 90° 30° V3 O A. v3 O B. 1 O c.​

Mathematics
2 answers:
siniylev [52]3 years ago
4 0

Answer:

D. 1/2

Step-by-step explanation:

yKpoI14uk [10]3 years ago
4 0

Answer:

E

Step-by-step explanation:

Cos=Adjacent/hypotenuse

Cos30=rad3/2

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What is the factored form of the polynomal? x2-12x+27
lianna [129]

Answer:

The answer is (x-9) (x-3).

Step-by-step explanation:

This is because when you multiply them together you get

x^{2}, -9x, -3x, and 27

When you add the like terms you get,

x^{2} - 12x +27

6 0
3 years ago
Practice Exercise 1:
Rudiy27

Answer:

Step-by-step explanation:

A

4 0
3 years ago
SOLVE. integration of (1-v) /(1+v^2)
Nutka1998 [239]
\displaystyle\int\frac{1-v}{1+v^2}\,\mathrm dv=\int\frac{\mathrm dv}{1+v^2}-\int\frac v{1+v^2}\,\mathrm dv

The first integral is already standard and has an antiderivative in terms of \arctan v. For the second integral, take w=1+v^2 so that \dfrac{\mathrm dw}2=v\,\mathrm dv. Then

\displaystyle\int\frac{\mathrm dv}{1+v^2}-\int\frac v{1+v^2}\,\mathrm dv=\arctan v-\frac12\int\frac{\mathrm dw}w
=\arctan v-\dfrac12\ln|w|+C
=\arctan v-\dfrac12\ln(1+v^2)+C
4 0
3 years ago
A group of 120 students were asked how old they were when they lost their first tooth. 50% said they were 7 years old. How many
olga55 [171]

Answer: Sample response: 50% is a friendly percent. You can divide 120 by 2 to find the answer. 120 divided by 2 is 60. So, 60 students were 7 years old when they lost their first tooth.

4 0
3 years ago
What is a square root?<br> DO NOT USE GOOGLE TO ANSWER THIS.
Afina-wow [57]

Sure.

A square root is the number or factor that, when multiplied by itself, will equal the number.

For example:

√49 = 7 (read as "the square root of 49 equals seven"

7 * 7 = 49 (read as "seven times seven equals 49"

7^2 = 49 (read as "seven squared equals 49"

Using an exponent and raising a number to the power of 2 squares it, which multiplies it by itself.

It is helpful to memorize all square roots up to 144, which is 12.

7 0
3 years ago
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