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2 years ago

Somebody please tell me the answer ..

Mathematics

2 answers:

Solnce55 [7]2 years ago

8 0

Answer:

y= -3/4 -0.5

...................

I need help with chemistry if anyone can help just look at my question and answer it please

Naily [24]2 years ago

4 0

Answer:

y=-3/4-0.5.

Step-by-step explanation:

Gradient=y2-y1/x2-x1.

=-5-4/6-(-6).

=-9/12.

=-3/4.

Equation of the line y=mx+c.

- 5=-3/4(6)+c.

- 5=-4/1/2+c.

- 5+4/1/2=c.

- 0.5=c.

Therfore y=-3/4-0.5.

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the performance score of 10 adults is recorded, and the results are 83 87 90 92 93 100 104 111 115 121 find the standard deviati

luda_lava [24]

Answer:

The standard deviation of the data set is $\sigma = 12.7906$ .

Step-by-step explanation:

The Standard Deviation is a measure of how spread out numbers are. Its symbol is σ (the greek letter sigma)

To find the standard deviation of the following data set

$\begin{array}{cccccccc}83&87&90&92&93&100&104&111\\115&121&&&&&&\end{array}$

we use the following formula

$\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{X}\right)^2 }}{n-1} }$

Step 1: Find the mean $\left( \overline{X} \right)$ .

The mean of a data set is the sum of the terms divided by the total number of terms. Using math notation we have:

$Mean = \frac{Sum ~ of ~ terms}{Number ~ of ~ terms}$

$Mean = \frac{Sum ~ of ~ terms}{Number ~ of ~ terms}=\frac{83+87+90+92+93+100+104+111+115+121}{10} \\\\Mean = \frac{996}{10} =\frac{498}{5}=99.6$

Step 2: Create the below table.

Step 3: Find the sum of numbers in the last column to get.

$\sum{\left(x_i - \overline{X}\right)^2} = 1472.4$

Step 4: Calculate σ using the above formula.

$\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{X}\right)^2 }}{n-1} } = \sqrt{ \frac{ 1472.4 }{ 10 - 1} } \approx 12.7906$

3 0

3 years ago

Can someone please help me with this? Mhanifa? I will mark brainliest

den301095 [7]

Answer:

Option C 20

GOOD LUCK FOR THE FUTURE! :)

8 0

2 years ago

How much would it cost to buy a piece of candy for 50 cents plus tax

gtnhenbr [62]

Answer:

it depends on which state your in or in your even in the us usually it is either 6% or 4% some times more or less % so im going to do both

50*0.06=53

50*0.04=52

Hope This Helps!!!

5 0

1 year ago

In a 51-inch television, the length of the screen's diagonal is 51 inches. If the screen's height is 25 inches,

DaniilM [7]

Answer:

44.452

Step-by-step explanation:

Using the Pythagorean theorem you can use:

51^2 = 25^2 + w^2

2601 = 625 +w^2

w^2 = 1976

w = 44.452

6 0

2 years ago

Read 2 more answers

.009 is 1/10 of what

IRINA_888 [86]

Answer:

If it's of which decimal than the answer will be 0.09

7 0

2 years ago