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balu736 [363]
4 years ago
13

Find the sum. (1/5x-5)+(2/5x-6)=

Mathematics
1 answer:
valkas [14]4 years ago
8 0

Answer:

\frac{3}{5}x-11

Step-by-step explanation:

(\frac{1}{5}x-5)+(\frac{2}{5} x-6)

=\frac{1}{5}x-5+\frac{2}{5} x-6

=\frac{3}{5}x-11

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Find the 5 number summary for the data shown x 3.1 10.2 12 12.1 12.2 15.3 27.9 30
Kazeer [188]

Answer:

  Min.     1st Qu.    Median      Mean       3rd Qu.        Max.  

  3.10     11.55       12.15        15.35        18.45         30.00

Step-by-step explanation:

The five-number summary includes five things that are:

1. Minimum Value

2. First Quartile (Q₁)

3. Median

4. Third Quartile (Q₃)

5. Maximum Value

So,  

1. Minimum Value = 3.10

It can be found by arranging the data in ascending order, the first value we will get is the minimum value.

2. First Quartile is the middle value between Minimum value and Median of data after arranging data in ascending order.

First Quartile (Q₁) = 11.55

3. Median is the middle value of the data after arranging them in ascending order.  

Median = 12.15

4. The third Quartile is the middle value between Median and Maximum Value of data after arranging data in ascending order.

Third Quartile (Q₃) = 18.45

5. Maximum Value is the largest value of the data or is the last value after arranging the data in ascending order.

Maximum Value = 30.

Percentiles are mostly use in very large data. Here n percent of data shows the nth percentile.

5 0
4 years ago
If the vertex of a parabola is at (2, 3) and the point (0, -1) is also on the parabola, find an equation for the parabola. Write
STALIN [3.7K]

Answer:

y=-1(x-2)^2+3

Step-by-step explanation:

W have been given that the vertex of a parabola is at (2, 3) and the point (0, -1) is also on the parabola. We are asked to find the equation of parabola in the form y=(x-h)^2+k.  

We know that vertex form of parabola in form y=a(x-h)^2+k, where (h,k) in vertex of parabola.  

Upon substituting coordinates of vertex, we will get:

y=a(x-2)^2+3

To find the value of a, we will substitute coordinates of point (0, -1) as:

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

-1=a(4)+3

-1=4a+3

-1-3=4a+3-3

-4=4a

\frac{-4}{4}=\frac{4a}{4}

-1=a

Therefore, our required equation would be y=-1(x-2)^2+3.

3 0
3 years ago
What is x(x+2) can someone show me how to do it please
yulyashka [42]

Answer:

x^2+2x

Step-by-step explanation: You would take x and multiply it by x and get X^2 then you would take x anm multiply it by 2 to get 2x. It is distributing

6 0
3 years ago
9
Rom4ik [11]
B)Huh estuve she she eub navegue.
4 0
3 years ago
Choose the correct simplification of the expression −4x2(6x − 5x2 − 5).
Archy [21]
To simplify this, we need to distribute the coefficient:
- 24 {x}^{3} + 20 {x}^{4}  + 20 {x}^{2}
The answer is C.
3 0
3 years ago
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