x is at most 30 this is math

Answer: Three standard deviation

Step-by-step explanation:

In a normal distribution, 99.7% of the values falls within three standard deviation from the mean.

Empirical rule states that for a normal distribution, 68% of the values falls within one standard deviation from the mean, 95% of the values falls within two standard deviation from the mean and 99.7% of the values falls within three standard deviation from the mean.

Hence:

In a normal distribution, 99.7% of the values falls within three standard deviation from the mean.

Find out more on empirical rule at: https://brainly.com/question/10093236

Answer:

6a=6.a I think is true cause it's like the same thing

Answer:

12 mi

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

edge 2020/21

Answer:

D

Step-by-step explanation:

You can't be certain unless this figure is a square or a rectangle. The question should state what it is.

You are asked for HF in the question. I think you are given JG. Diagonals of a square or rectangle are equal and bisect each other.

HJ = GJ                 From the above statement.

2HJ = HF              HF is bisected.

2*15 = 30

HF = 30

Answer:

Step-by-step explanation:

Use Intersecting chords theorem and find x:

Find KM:

Step-by-step explanation:

➡JU×LU=MU×KU

➡10×2x=9(2x+2)

➡20x=18x+18

➡20x-18x=18

➡2x=18

➡x=18/2

➡x=9

KM=KU+UM

➡KM=9+2(9)+2

➡KM=9+18+2

➡KM=29

Answer:

B) 8 to 12 years of experience. Enjoy the answer

Step-by-step explanation:

Answer:

$40,000 to $60,000 annual salary

Step-by-step explanation:

A cluster is formed when several data points lie in a small interval. The range of the cluster is the set of y-coordinates.

Answer:

D.5/36

Step-by-step explanation:

There are 5 ways;

1 and 5

2 and 4

3 and 3

4 and 2

5 and 1

Answer: 87

Step-by-step explanation:

Answer:

y = x² + 1

Step-by-step explanation:

y = x² + 1

When x = -3

y = -3² + 1

y = 9 + 1 = 10

When x = -1

y = x² + 1

y = -1² + 1

y = 1 + 1 = 2

When x = 0

y = x² + 1

y = 0² + 1 = 1

When x = 2

y = x² + 1

y = 2² + 1

y = 4 + 1 = 5

All of the x and y values have been correct

Answer:

A

Step-by-step explanation:

the others will not produce the correct value for the image ((y)), if you replace the incognito x in the equation by the -3, you can see that you only obtain the result 10 for y in the first equation. you don't even need to test all the cases.

-3.-3 +1 = 10

-3.-3 + 2 = 11

-3.-3 -1 = 8

-3.-3 -3 = 6

Answer:

24

Step-by-step explanation:

First, start off by subtracting the cost of the coffee ($5.96) from the total cost of $32.12. This would give you $26.16. From here, if you multiply 24 by the cost of each doughnut  ($1.09) you would get $26.16 which is the total amount of money that was spent on doughnuts. Miss Solan bought 24 doughnuts.

Answer:

(1,-1)

Step-by-step explanation:

The solution is where the two graphs cross.

The two lines cross at x=1 and y = -1

(1,-1)

Answer:

CD= 4.25

Step-by-step explanation:

so CD is similar to RS

and the difference between the shapes are 3.75cm.

so 8 - 3.75 =4.25

Answer:

x = 12.3

y = 15.9

Step-by-step explanation:

Apply trigonometric ratio to find x and Reference angle = 51°

Opposite side length = x

Adjacent side length = 10

Hypotensive length = y

✔️To find x, apply TOA:

Tan 51° = Opp/Adj

Tan 51° = x/10

x = Tan 51° × 10

x = 12.3 (nearest tenth)

✔️To find y, apply CAH:

Cos 51° = Adj/Hyp

Cos 51° = 10/y

y × Cos 51° = 10

Divide both sides by Cos 51

y = 10/Cos 51

y = 15.9 (nearest tenth)

Answer:

199.36

Step-by-step explanation

Take hourly wage and multiply it by the total number of hours worked

28*7.12=199.36

Answer:

199.36

Step-by-step explanation:

Just multiply.

Can I have brainliest?

Answer:

(5x + 6) (x + 3)

hope it helps

Answer:

972 u³

Step-by-step explanation:

The radius is 9 . We can use formula ,

⇒ V = 4/3 π r³

⇒ V = 4/3 × π × 9³

⇒ V = 4 × π × 81 × 3

⇒ V = 972 unit³

Answer:

D. 30%?

I'm not 100% sure but I think its D. Sorry if it's wrong.

Answer:

115

Step-by-step explanation:

It looks like 115 degrees

Answer:

115 degrees

Step-by-step explanation:

Answer:

6 elephants + 15 tigers

Step-by-step explanation:

(Im assuming that the animals are meant to be variables)

X = elephants, y = tigers

2x + 15y + 4x

Combine like terms: 2x + 4x +15y

Simplify: 6x + 15y

The graph that shows an even function is the fourth image.

This refers to the type of function where f(x)=f(−x) has an unchanged value even if the sign of the independent variable was in reciprocals.

Hence, we can see that from the given images of graphs, we can see that the other options do not have a symmetrical axis with respect to the y-axis, but option D has symmetry with the y-axis.

Read more about even functions here:

https://brainly.com/question/3964641

#SPJ2

Answer:

The ball is in the air for about 5.873 seconds.

Step-by-step explanation:

The function:

[tex]f(x)=-5x^2+20x+55[/tex]

Models the height of a ball x seconds after it is thrown in the air.

And we want to find the total time the ball is in the air.

So, we can simply find the time x at which the ball lands. If it lands, its height f above the ground will be 0. Thus:

[tex]0=-5x^2+20x+55[/tex]

We will solve for x. Dividing both sides by -5 yields:

[tex]0=x^2-4x-11[/tex]

The equation is unfactorable, so we can use the quadratic formula:

[tex]\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

In this case, a = 1, b = -4, and c = -11. So:

[tex]\displaystyle x=\frac{-(-4)\pm\sqrt{(-4)^2-4(1)(-11)}}{2(1)}[/tex]

Evaluate:

[tex]\displaystyle\begin{aligned} x&=\frac{4\pm\sqrt{16+44}}{2}\\&=\frac{4\pm\sqrt{60}}{2}\\&=\frac{4\pm2\sqrt{15}}{2}\\&=2\pm\sqrt{15}\end{aligned}[/tex]

Approximate:

[tex]x_1=2+\sqrt{15}\approx5.873\text{ or } x_2=2-\sqrt{15}\approx-1.873[/tex]

Since time cannot be negative, our only solution is the first choice.

So, the ball is in the air for about 5.873 seconds.

Answer:

5 hours

Step-by-step explanation:

275 mi/(55mi/h)=5h

or to put it simply 275/55=5

Answer:

33°

Step-by-step explanation:

<ACD =90-33 =57°

<DCB=<ACB - <ACD

=90° -57 =33°

In triangle ACD the only angle that has not been found is <ACD so you find it by adding 90+33 and subtracting from 180° to get 57°. <ACB =90° and <ACD = 57° ,the angle in question is<DCB which is part of< ACB. So to get <DCB you do 90°-57°=33°.

B = 180 - 90 - 33 = 57°

C in DCB tringle = 180 - 90 - 57 = 33°

So C in DCB triangle = 33°

Answer:

=2xy²+2x²y

Step-by-step explanation:

Delete the parenthesis of both operations.

= x²y - 3y² + 5xy² + x²y - 3xy² - 3y²

Then you have to make the simplification

= 2xy²+2x²y

Answer:

<1 = 47

<2 = 65

<3 =68

<4 = 68

Step-by-step explanation:

Given:

The length of diagonals of a rhombus are 12 ft and 5 ft.

To find:

The area of the rhombus

Solution:

Area of a rhombus is:

[tex]Area=\dfrac{d_1d_2}{2}[/tex]

Where, [tex]d_1,d_2[/tex] are two diagonals of the rhombus.

It is given that the length of diagonals of the rhombus are 12 ft and 5 ft.

Putting [tex]d_1=12,d_2=5[/tex], we get

[tex]Area=\dfrac{12\times 5}{2}[/tex]

[tex]Area=\dfrac{60}{2}[/tex]

[tex]Area=30[/tex]

Therefore, the area of the rhombus is 30 square ft.

Answer:

The Answer's no i believe

Answer:

I think yes

Step-by-step explanation:

If im wrong i am very sorry!