All categories

3 years ago

Please help there are two pictures because I could not screen the whole thing!!!!1 Giving Branliest answer! YEEEEEEEEEEEET

Mathematics

1 answer:

olga nikolaevna [1]3 years ago

4 0

These drawings depict the steps to get the perpendicular line using a compas (and maybe a ruler)

remember that a line goes through 2 points so we need 2 different points to construct our perpendicular line

the first one is wrong because it doesn't constraint it to be perpendicular
it only has 1 point,

2nd is wrong as well, has only 1 point, the center

3rd is right

4th is correct, hold a sec
how did that 2nd upper arc have same beginig pointn for compass?

3rd on is answer

You might be interested in

Please help me solve 8x+2y=32 and 10x-5y=-20

Tju [1.3M]

Answer:

(2,8)

x = 2

y = 8

Step-by-step explanation:

<u>The steps are shown in the picture</u>

7 0

3 years ago

at the factory, a baseballcard is placed in every 9th package of cereal. a football card is placed in every 25th package of the

Anvisha [2.4K]

I believe that is gonna be the 225 package.
Thats the lowest number that both 25 and 9 go into

6 0

3 years ago

Read 2 more answers

In an experiment, some diseased mice were randomly divided into two groups. One group was given an experimental drug, and one wa

damaskus [11]

Answer:

D)Yes, because the difference in the means in the actual experiment was more than two standard deviations from 0.

Step-by-step explanation:

We will test the hypothesis on the difference between means.

We have a sample 1 with mean M1=18.2 (drug group) and a sample 2 with mean M2=15.9 (no-drug group).

Then, the difference between means is:

$M_d=M_1-M_2=18.2-15.9=2.3$

If the standard deviation of the differences of the sample means of the two groups was 1.1 days, the t-statistic can be calculated as:

$t=\dfrac{M_d-(\mu_1-\mu_2)}{s_{M_d}}=\dfrac{2.3-(0)}{1.1}=2.09$

The critical value for a two tailed test with confidence of 95% (level of significance of 0.05) is t=z=1.96, assuming a large sample.

This is approximately 2 standards deviation (z=2).

The test statistict=2.09 is bigger than the critical value and lies in the rejection region, so the effect is significant. The null hypothesis would be rejected: the difference between means is significant.

4 0

3 years ago

15 points to answer this question

Mamont248 [21]

it is none since there is no relation

4 0

3 years ago

Read 2 more answers

If the product of two rational numbers is (-9/16) and one of them is (-4/15) find the other number.

ololo11 [35]

Given:

The product of two numbers is (-9/16).
One of the numbers is (-4/15)

To find: The other number.

Answer:

Let's assume the unknown number to be 'x'.

(-4/15) × x = (-9/16)

× = (-9/16) ÷ (-4/15)

When we divide a fraction by another fraction, the divisor will be taken in its reciprocal form.

x = (-9/16) × (-15/4)

x = 135/64

Therefore, the other number is 135/64.

Hope it helps. :)

8 0

3 years ago