Ask question

Ask question

All categories

3 years ago

15

Plz help question 1 or 2

1 answer:

s344n2d4d5 [400]3 years ago

7 0

Answer:

sorry dont know

Step-by-step explanation:

30 oite 904-=

You might be interested in

Plz someone help meeeee

yan [13]

Answer:

s ur e eye ge

Step-by-step explanation:

the answer is y = (6, 0) quadrant 1

3 0

3 years ago

Which professionals most directly use geometry in their work?

S_A_V [24]

Answer:

Astronomers.

Step-by-step explanation:

In many, many ways we can use geometry in astronomy. One of the most or important example is that when astronomers find the distance between the different celestial bodies and they also find the tilt of any planet they uses geometry .

And in this field other uses of geometry when planets orbiting around the sun or satellites orbiting around there planets astronomers uses geometry to find the speed and velocity of the planets.

6 0

3 years ago

Twice the sum of a number and negative nine

Mice21 [21]

2(x+-9)
2(x-9)
Distribute
2x-18 is the simplified expression

3 0

3 years ago

Help me pls! this is due tonite . I'm doing a ged practice test and I just have a few questions I haven't answered

beks73 [17]

Answer:

Step-by-step explanation:

36x⁴ /12x⁴ + 12x⁸ / 12x⁴

3x+x²

3 0

3 years ago

Assume that you want to test the claim that the paired sample data come from a population for which the mean difference is µd =

ahrayia [7]

Answer:

d: 2, 4, -6, 0, -1, -5, 0, 1

The second step is calculate the mean difference

$\bar d= \frac{\sum_{i=1}^n d_i}{n}= \frac{29}{8}=-0.625$

The third step would be calculate the standard deviation for the differences, and we got:

$s_d =\frac{\sum_{i=1}^n (d_i -\bar d)^2}{n-1} =3.378$

The next step is calculate the statistic given by :

$t=\frac{\bar d -0}{\frac{s_d}{\sqrt{n}}}=\frac{-0.625 -0}{\frac{3.378}{\sqrt{8}}}=-0.523$

And the correct option would be:

a. t = -0.523

Step-by-step explanation:

We assume the following notation:

x=test value after , y = test value before

x: 34 39 28 33 27 23 35 33

y: 32 35 34 33 28 28 35 32

The system of hypothesis for this case is given by:

Null hypothesis: $\mu_y- \mu_x = 0$

Alternative hypothesis: $\mu_y -\mu_x \neq 0$

The first step is calculate the difference $d_i=y_i-x_i$ and we obtain this:

d: 2, 4, -6, 0, -1, -5, 0, 1

The second step is calculate the mean difference

$\bar d= \frac{\sum_{i=1}^n d_i}{n}= \frac{29}{8}=-0.625$

The third step would be calculate the standard deviation for the differences, and we got:

$s_d =\frac{\sum_{i=1}^n (d_i -\bar d)^2}{n-1} =3.378$

The next step is calculate the statistic given by :

$t=\frac{\bar d -0}{\frac{s_d}{\sqrt{n}}}=\frac{-0.625 -0}{\frac{3.378}{\sqrt{8}}}=-0.523$

And the correct option would be:

a. t = -0.523

5 0

4 years ago