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3 years ago

Does it makes sense that sin(-)=-sin?

Mathematics

2 answers:

Andre45 [30]3 years ago

6 0

No, you cannot used that because you won't be able to solve that.

nevsk [136]3 years ago

3 0

Yes. Let's use 5 for instance. 5(-)=5(-1)=-5. This same principle can be demonstrated with -sin.
Hope this helps and please give brainliest!

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PLS HELP ME ON THIS QUESTION I WILL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER PLS GIVE ME A STEP BY STEP EXPLANATION!!

inessss [21]

The answer is C, both continuous

4 0

3 years ago

The lengths of lumber a machine cuts are normally distributed with a mean of 100 inches and a standard deviation of 0.3 inch. (

ki77a [65]

Answer:

a) 0.345

b) 0.005

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 100

Standard Deviation, σ = 0.3

We are given that the distribution of lengths of lumber is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(length greater than 100.12 inches)

P(x > 100.12)

$P( x > 100.12) = P( z > \displaystyle\frac{100.12 - 100}{0.3}) = P(z > 0.4)$

$= 1 - P(z \leq 0.4)$

Calculation the value from standard normal z table, we have,

$P(x > 100.12) = 1 - 0.655 = 0.345 = 34.5\%$

b) Standard error due to sampling:

$\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{0.3}{\sqrt{41}} = 0.0468$

P(length greater than 100.12 inches for the sample)

P(x > 100.12)

$P( x > 100.12) = P( z > \displaystyle\frac{100.12 - 100}{0.0468}) = P(z > 2.564)$

$= 1 - P(z \leq 2.564)$

Calculation the value from standard normal z table, we have,

$P(x > 100.12) = 1 - 0.995 = 0.005$

8 0

4 years ago

Negative one half plus negative one sixth equals what fraction

TiliK225 [7]

Answer:

-2/3

Step-by-step explanation:

$\frac{-1}{2} +\frac{-1}{6}$ Find a common denominator.

$=\frac{-1*3}{2*3} +\frac{-1}{6}$ Multiply -1/2 by 3/3.

$=\frac{-3}{6} +\frac{-1}{6}$

$=\frac{-3-1}{6}$ Combine the fractions

$=\frac{-4}{6}$

$=\frac{-2}{3}$ Reduced to lowest terms. (-4 and 6 are divisible by 2)

8 0

3 years ago

what do you call a relation where each element in the domain is related to only one value in the by some rules

mario62 [17]

A function is a relation (rule) that assigns each element in the domain to exactly one element in the range.

4 0

3 years ago

The endpoints of a

Zolol [24]

Answer:

2nd option

Step-by-step explanation:

the equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k ) are the coordinates of the centre and r is the radius

the centre is at the midpoint of the endpoints of the diameter.

The coordinates of the centre is the average of the coordinates of the endpoints.

centre = ( $\frac{-4+2}{2}$ , $\frac{7-1}{2}$ ) = ( $\frac{-2}{2}$ , $\frac{6}{2}$ ) = (- 1, 3 )

the radius is the distance from the centre to either of the endpoints

using the distance formula to calculate r

r = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2$

with (x₁, y₁ ) = (- 1, 3 ) and (x₂, y₂ ) = (2, - 1 )

r = $\sqrt{(2-(-1))^2+(-1-3)^2}$

= $\sqrt{(2+1)^2+(-4)^2}$

= $\sqrt{3^2+16}$

= $\sqrt{9+16}$

= $\sqrt{25}$

= 5

then equation of circle is

(x - (- 1) )² + (y - 3)² = 5² , that is

(x + 1)² + (y - 3)² = 25

6 0

3 years ago