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igor_vitrenko [27]
1 year ago
8

For a standard normal distribution,Find P(-1.21 < Z< 2.26)

Mathematics
1 answer:
Mars2501 [29]1 year ago
4 0

Answer:

The range of z-score is given below as

P(-1.21Using a graphing calculator, we will have the image be[tex]\begin{gathered} P(z

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What is the graph of the direct variation equation? Y=5/2x
Aneli [31]

Given equation : y=5/2x.

Solution: In order to graph direct variation equation, we need to make a table of different values of x and y.

We need to plug some values of x's in equation to get values of y's.

Because, we have fraction 5/2, and 2 in denominator. So it would be better to take multiples of 2, so that we don't get values in decimals.

Let us take x=0 first.

Plugging x=0 in given equation, we get

y=5/2x = 5/2(0) = 0.

Let us take x=2 first.

Plugging x=2 in given equation, we get

y=5/2 *(2) = 5

Let us take x=2 first.

Plugging x=4 in given equation, we get

y=5/2 *(4) = 5 *2 = 10.

We got three coordinates for the graph (0,0) , (2,5) and (4, 10).

Let us plot those coordinates on the graph and join the points to draw a straight line.


6 0
4 years ago
Find the exact roots of x²-2x-10=4x​
BARSIC [14]

Answer:

x =  3 -  \sqrt{19}  \:  \: or \:  \: x = 3 +   \sqrt{19}

Step-by-step explanation:

The given equation is

{x}^{2}  - 2x - 10 = 4x

We group the linear terms to get:

{x}^{2}  - 2x - 4x - 10 = 0

{x}^{2}  - 6x - 10 = 0

We compare to

a {x}^{2}  + bx + c = 0

This means

a=1, b=-6 and c=-10

We plug in the values into the quadratic formula:

x =  \frac{ - b \pm \sqrt{ {b}^{2} - 4ac} }{2a}

This gives us

x =  \frac{ - -6 \pm \sqrt{ {( - 6)}^{2} - 4 \times 1 \times  - 10 } }{2 \times 1}

x =  \frac{ 6 \pm \sqrt{ 36 + 40 } }{2}

x =  \frac{ 6 \pm \sqrt{76 } }{2}

x =  \frac{ - 6 \pm 2\sqrt{19} }{2}

x = 3 \pm \sqrt{19}

The solutions are

x =3 +  \sqrt{19}

or

x = 3 -  \sqrt{19}

7 0
3 years ago
X+2y=0 <br> 12y= -6x <br><br> Plzzz this is due 11:59
yanalaym [24]

Answer:1. X+2y=0 answer:−2y     2. 12y= -6x answer:x=−2y

Step-by-step explanation:

5 0
3 years ago
I need help what is 2 and 7/8 + 2 and 7/8 + 2 and 7/8 = <br> i dont know i need help
ANTONII [103]

Answer:

8 and 5/8

Step-by-step explanation:

calculator

8 0
3 years ago
Read 2 more answers
If triangle ABC is similar WXY write a proportionality statement for the ratio of the sides of the triangle
Serjik [45]

There are many ways to answer this. Here is one answer shown below

AB/WX = BC/XY

On the left side is the ratio of AB over WX. These two sides are the bottom horizontal portions of the triangles. This is a visual indication that they correspond to one another. More concrete proof of this is that AB and WX are the first two letters of the sequences ABC and WXY respectively. The order is very important to help establish pairs like this.

On the right side of that equation above, we have BC and XY as the diagonal sides on the right part of each triangle. They are the last two letters of ABC and WXY respectively, which is a non-visual way to prove these two sides correspond.

It might help to line up ABC over top WXY so you can pick out the corresponding sides. I show this in the attached image below.

6 0
4 years ago
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