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2 years ago

12

Explain these questions, please

1 answer:

harina [27]2 years ago

3 0

How I was taught: Make sure both numbers are a fraction. If not put "1" as the denominator. Multiply straight across. Simplify if you can.

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Which angle is an x-intercept for the function y = cos(1/2x)

KonstantinChe [14]

For the function
y = cos(1/2 x)
The x-intercept can be calculated by equating the function to zero and solving for x. So,
y = cos(1/2 x) = 0
1/2 x = arc cos 0
1/2 x = 90° +180°n
x =2 (90° +180°n)
x = 180° + 360°n
or converting to radians
x = (180° + 360° n)(π/180°)
x = π + 2π n
where n is any whole number

if n = 0
x = π

Therefore, the x-intercept is π or π+2π n

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2 years ago

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The graph of which equation is parallel to the line in the graph above?

Anvisha [2.4K]

I believe it’s B, used desmos graphing calculator to graph it until I found something parallel

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3 years ago

A 45 degrees <br> B 90 degrees <br> C 135 degrees

drek231 [11]

Answer:

The measure of $\angle 3$ :

$\angle 3 = 45\textdegree$

Step-by-step explanation:

The measurement of $\angle 3$ is also $45\textdegree$ , because both $\angle 3$ and the angle with the measure of $45\textdegree$ are congruent.

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2 years ago

Need help ASAP!!!!!!

Strike441 [17]

Answer: RNW= 78 degrees

4 0

3 years ago

If the square root of p2 is an integer greater than 1, which of the following must be true? I. p2 has an odd number of positive

Grace [21]

Answer:

Option | and Option || is True

Step-by-step explanation:

Given:

If the square root of $p^{2}$ is an integer greater than 1,

Lets p = 2, 3, 4, 5, 6, 7..........

Solution:

Now we check all option for $p^{2}$

Option |.

$p^{2}$ has an odd number of positive factors.

Let $p=2$

The positive factor of $2^{2}=4=1,2,4$

Number of factor is 3

Let $p=3$

The positive factor of $3^{2}=9=1,3,9$

Number of factor is 3

So, $p^{2}$ has an odd number of positive factors.

Therefore, 1st option is true.

Option ||.

$p^{2}$ can be expressed as the product of an even number of positive prime factors

Let $p=2$

The positive factor of $2^{2}=4=1,2,4$

$4=2\times 2$

Let $p=3$

The positive factor of $3^{2}=9=1,3,9$

$9=3\times 3$

So, it is expressed as the product of an even number of positive prime factors,

Therefore, 2nd option is true.

Option |||.

p has an even number of positive factors

Let $p=2$

Positive factor of $2=1,2$

Number of factor is 2.

Let $p=4$

Positive factor of $4=1,2,4$

Number of factor is 3 that is odd

So, p has also odd number of positive factor.

Therefore, it is false.

Therefore, Option | and Option || is True.

Option ||| is false.

4 0

2 years ago