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4 years ago

11

Please help me I really don't understand

1 answer:

dalvyx [7]4 years ago

8 0

It will look like a half branch of a parabola opened upward

You can either create a table by choosing values of y 0, 1, 2, 3, 4 and so on

or

A = 0.25 d^2

so the center is (0,0)

and for d = (2)

A = 1

and for A = 0.25

d = 1

and try to draw it with just 3 points

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A data set consists of the values 2, 6, 3, and 1. If we consider this a population (all the values available), the variance isA.

Hoochie [10]

Answer: E. none of the above

Step-by-step explanation:

The given data values that represents the population:

2, 6, 3, and 1.

Number of values : n=4

Mean of the data values = $\dfrac{\text{Sum of values}}{\text{No. of values}}$

$\dfrac{2+6+3+1}{4}=\dfrac{12}{4}=3$

Sum of the squares of the difference between each values and the mean =

$(2-3)^2+(6-3)^2+(3-3)^2+(1-3)^2$

$=-1^2+3^2+0^2+(-2)^2$

$=1+9+0+4=14$

Now , Variance = (Sum of the squares of the difference between each values and the mean ) ÷ (n)

= (14) ÷ (4)= 3.5

Hence, the variance is 3.5.

Therefore , the correct answer is "E. none of the above".

8 0

3 years ago

In a right triangle with acute angle of measure theta, sintheta=1 /2. What is the value of costhetatheta? Draw a diagram as part

Stells [14]

Answer:

0.866

Step-by-step explanation:

By definition

$sin \theta = \frac{Opposite}{Hypotenuse}$

$cos \theta = \frac{Adjacent}{Hypotenuse}$

We know that $sin \theta = 0.5$ . Inverse of sine is arcsin, so, angle $\theta$ is computed as

$\theta=arcsin(0.5)=30$

Therefore, cosine of $\theta$ is

cos (30°) = 0.866

3 0

4 years ago

Solve the following equation for x.<br> log(x) + log(x- 3) = log(3x)

Elenna [48]

The answer is x=6
hope this helps!

3 0

2 years ago

Find the root of 11+2square30

EleoNora [17]

$\\ \sf\longmapsto \sqrt{11+2^230}$

$\\ \sf\longmapsto \sqrt{11+4(30)}$

$\\ \sf\longmapsto \sqrt{11+120}$

$\\ \sf\longmapsto \sqrt{131}$

$\\ \sf\longmapsto 11.3$

5 0

3 years ago

How are dilation different from other types of transformations?

krok68 [10]

While rotations, translations and reflexions do not alter the volume of the matter, dilation does increases the volume.

So the answer would be, dilation increases the volume while other types of transformations do not.

4 0

3 years ago