All categories

3 years ago

I need help I’m graphing this please help out

Mathematics

2 answers:

katrin2010 [14]3 years ago

6 0

Answer:

y-intercept(0, -9)

Step-by-step explanation:

Rudik [331]3 years ago

5 0

Answer:

Step-by-step explanation:

You might be interested in

Which on these time measurements is the smallest?

n200080 [17]

Seconds because one second is less than one minute

3 0

3 years ago

Hlpppppppppppppppppppppppppppppppp

NeX [460]

Answer:

Step-by-step explanation:

-7.5 is less than 6.5

4 0

2 years ago

Help me with question 7 pls

Marrrta [24]

If the coefficient of x^2 is negative, the graph will be n shaped and curve down instead of like a u shape if it was positive. If the vertex is below the x axis and curves down, it won’t pass the x axis, Tia is right.

5 0

3 years ago

What's the y-intersept and how can we find it?!

motikmotik

By looking at the graph and seeing which point crosses the y axis. This point will always have an x coordinate of zero.

7 0

3 years ago

Read 2 more answers

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