May 18, 11:05:10 PM When Jace runs the 400 meter dash, his finishing times are normally distributed with a mean of 81 seconds and a standard deviation of 1.5 seconds. Using the empirical rule, what percentage of races will his finishing time be between 79.5 and 82.5 seconds?​

Answer:

42.2 cubic inch

Step-by-step explanation:

Applying,

V = πr²h/3.................... Equation 1

Where, r = radius of the circular base, h = height of the cone, π = pie.

But,

r = P/2π..................... Equation 2

Where P = circumference of the circular base.

Substitute equation 2 into equation 1

V = π(P/2π)²(h)/3

V = P²h/12π.................. Equation 3

From the question,

Given: h = 18.4 in, P = 9.3 in

Constant: π = 3.14

Substitute these values into equation 3

V = (9.3²)(18.4)/(12×3.14)

V = 42.2 cubic inch

Answer:

20

Step-by-step explanation:

complex conjugate of 10+5i = 10-5i

10+5i + 10-5i = 20

Answer:

12 Squared Units

Step-by-step explanation:

Top length: 4 Units

Side length: 3 Units

Answer:

1st one

Step-by-step explanation:

Answer:

Bottom left

Step-by-step explanation:

Those I-ready diagnostics suck don't they?

Answer:

-4 to -1.5

Step-by-step explanation:

When the graph start to slope downwards or go down its decreasing. So when the hump starts to go down at (-4,0) it then starts to go up again after (-1.5,0). Hope this helps:)

Answer: 40/64

Step-by-step explanation:

Answer:

1 5/7

Step-by-step explanation:

[tex]1 \frac{5}{7} [/tex]

is the answer if you meant to say mixed fraction

The answer is (C) 2x+1/ 2x+5.

This is just finding like terms.

Like terms are terms that are the same, like 2x and 3x for example, would be like terms. (This is not in the problem by the way.) Just divide the like terms, and that's your answer.

I tried to give a good explanation but I'm super tired. Just trying to help.

The expression is equivalent to the quotient is (2x+1)/(2x+5). Therefore, option C is the correct answer.

Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for the variable.

Given that, (4x²-8x-5)/(4x²-25)

= (4x²-10x+2x-5)/((2x)²-(5)²)

= [2x(2x-5)+1(2x-5)]/(2x-5)(2x+5)

= [(2x-5)(2x+1)]/(2x-5)(2x+5)

= (2x+1)/(2x+5)

Therefore, option C is the correct answer.

To learn more about an equivalent expression visit:

https://brainly.com/question/28170201.

#SPJ2

Answer: Point P is at (3, 7)

Step-by-step explanation: the distance from point a to point B is 10.8. 10.8 divided by 3 is 3.6, so you have to find a point that 3.6 from point a. Using a graph, I found the answer to be (3,7)

Answer:

89  sq meters

Step-by-step explanation:

The whole rectangle  13x8 = 104

Now subtract the white triangle

(6x5)/2 = 15

104-15 = 89

Answer:

Statistical questions are asking for ABOUT how much not an exact amount or number.

Answer:

B,C,D

Step-by-step explanation:

A quadrilateral is a shape that has 4 sides, along with other rules.

A rhombus (also known as a diamond) has 4 sides.

A parallelogram has 4 sides.

A trapezoid has 4 sides.

A circle does not have 4 sides, since its one side continues infinitely.

Step-by-step explanation:

Use the following ratio:

[tex] \frac{x}{25} = \frac{6}{10} [/tex]

Answer:

r/25=6/10 thats the answer

Step-by-step explanation:

ez lol yw

Given:

Height of a man = [tex]61\dfrac{5}{12}[/tex] inches

Height of the daughter = [tex]58\dfrac{4}{9}[/tex] inches

To find:

How much taller is the man?

Solution:

It this problem, we need to find the difference between the heights of the man and his daughter.

Difference between the heights [tex]=61\dfrac{5}{12}-58\dfrac{4}{9}[/tex]

                                                      [tex]=\dfrac{732+5}{12}-\dfrac{522+4}{9}[/tex]

                                                      [tex]=\dfrac{737}{12}-\dfrac{526}{9}[/tex]

Taking LCM, we get

Difference between the heights [tex]=\dfrac{3(737)-4(526)}{36}[/tex]

                                                      [tex]=\dfrac{2211-2104}{36}[/tex]

                                                      [tex]=\dfrac{107 }{36}[/tex]

                                                      [tex]=2\dfrac{35 }{36}[/tex]

Therefore, the man is [tex]2\dfrac{35}{36}[/tex] inches taller than his daughter.

Answer:

First coin Second coin outcome

H T HT

T H TH

T T TT

Step-by-step explanation:

First coin     Second coin             outcome

H               T                               HT

T               H                               TH

T               T                                TT

Answer:

C: Is the Answer

Step-by-step explanation:

Really hope it'll help!!

Answer:*FIND THE SQAURE ROOT OF 1054729 BY DIVISION METHOD*.

Step-by-step explanation:

what? you said to tell you that

Answer:

It might be A.

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

If you add 2+2 the answer is not greater than 6, meaning that the sides cannot form a triangle

Answer:

♥Love You♥ DUDE

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

since x is GREATER than -25, the shaded part has to be on the right of -25

Answer: B

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Answer:

-18

Step-by-step explanation:

First we start with brackets

(-2+5)= 3

Now

-6×3=-18

Answer:

what do you mean by why?

Step-by-step explanation:

why why why why why??

Answer:

5.25

Step-by-step explanation:

So lets gather our information(Note that I use x as the small x value and X as the larger and missing value)

First off, we know that x is 3.

We know that the X value is a scale of x by 1.75.

We can think of this as 1.75x.

So to find X, we can multiply x by the scale 1.75:

x*1.75=X

plug in the value we know for x:

3*1.75=X

=

5.25=X

So our answer is 5.25!

Hope this helps! :)

Answer:

8 cm

Step-by-step explanation:

The area of the shaded portion is:

[tex]a = \pi \times (( {r1)}^{2} - {(r2}^{2})) [/tex]

A=39π cm^2

r1 is the radius of the large circle

r2=5 cm

So,

[tex]39\pi = \pi \times (( {r1)}^{2} - {5}^{2} ) \\ r1 = 8 \: cm[/tex]

Answer:

A

Step-by-step explanation:

I think I am not sure I just started to do this in school...

Answer:

Step-by-step explanation:

P(A and B) = 0.1

Answer:

5.4

Step-by-step explanation:

Circumference = 2 x 3.14 x radius

To find this information, you must first divide:

33.912 ÷ 2 = 16.956

Then, divide:

16.956 ÷ 3.14 = 5.4

So then your answer is:

Radius = 5.4

Hope this helps you out! : )

Answer:

Assumptions and bias

Step-by-step explanation:

Creativity and imagination is also not, but assumptions and bias ruin your investigation.

Answer:

D.) 0.4m= 8

Step-by-step explanation:

I AsKeD My MaTh tEaChErS FoR uUu :) HaVe a gOoD DaY