In a high school high jump contest, the height of clearing the bar ranged from 71 inches to 84 inches. The mean height was 76 inches and the standard deviation was 3.5 inches. What percent of the jumpers were in the group jumping below 79.5 inches

Answers

Answer 1

Step-by-step explanation:

Given data:

Range of jumps  = 71 to 84 inches

Mean of jumps = 76 inches

standard deviation = 3.5

To calculate the percent of jumpers in the group jumping below 79.5 inches

Let us calculate the number of standard deviation in 79.5 inches

= 79.5/3.5

= 22.71 times

Answer 2

Answer:

84.1%

Step-by-step explanation:


Related Questions

Between 0900 and 10 30, a man walks a distance of 27 km. What is his average speed in km/h?

Answers

Answer:

18

Step-by-step explanation:

0900 to1030 is 1.5 h

Take 27/1.5

Then you will get the answer

A triangular prism has a height of 11 meters and a base with the following measurements. All dimensions are in meters.



What is the value of B ?

7 m 2
8 m 2
77 m 2
14 m 2
ty :)

Answers

Answer:

its 7m 2

Step-by-step explanation:

Honestly I do not like bullies. If you are a bully than STOP.

Answers

Answer:

lol i don't like bullies either

i mean...i say that now...but in first grade i used to be a bully....we don't talk about that tho

anyways have a nice day and show them bullies who's boss

Exactly no one likes bullies :)

he total cost of a vase of spring flowers at a flower shop depends on the number of flowers ordered. The vase costs $3, and each flower costs $2.50. Which equation can be used to findc,the total cost of the vase withfflowers?

Answers

Answer:

3+2.50x

Step-by-step explanation

x represents how many flowers you bought which you mulitply with 2.50 since each flower is 2.50 dollars. Then you add 3 since the cost of the vase is 3 dollars.

Help me with this please!!!!!!!

Answers

Answer:

The answer is 8.54

:Renita's Bike Ride
Renita is riding her bike to school. It takes her 5 minutes to
travel half of a mile.

Answers

Answer:

Okay well if you need to find mph she is going 10 mph

Step-by-step explanation:

1/2+1/2= 1 mile in 10 min, multiply both sides by 6 and you get 1 mile = 60min

Consider the division expression 7 ½ ÷ 2. Select all multiplication equations that correspond to this division expression.

Answers

Answer:

i dunno

Step-by-step explanation:

but i need the points to ask questions

Look at the triangle 5

While vacationiong, you decided to go bungee jumping off a cliff into the river. Your height as a function of time is modeled by the function h(t)= -16t^2+16t+370, where t is time in seconds and h is the height in feet.

When did u hi the water? Round your answer to the nearest hundreth?

Answers

Answer:

5.33 Seconds

Step-by-step explanation:

This is because you have to do the quadratic equation and solve.

The time required to hi the water is 5.33 seconds.

What is a quadratic equation?

A quadratic equation is a second-order polynomial equation in a single variable x as ax^2+bx+c=0 with a ≠ 0 . A quadratic equation as an equation of degree 2, meaning that the highest exponent of this function is 2.

For the given situation,

The function is h(t)= -16t^2+16t+370

The roots of this function can be found by using the formula,

[tex]t=\frac{-b+\sqrt{b^{2}-4ac } }{2a}[/tex] or [tex]t=\frac{-b-\sqrt{b^{2}-4ac } }{2a}[/tex]

Here, a=-16, b=16, c=370

⇒ [tex]t=\frac{-16+\sqrt{16^{2}-4(-16)(370) } }{2(-16)}[/tex] or [tex]t=\frac{-16-\sqrt{16^{2}-4(-16)(370) } }{2(-16)}[/tex]

⇒ [tex]t=\frac{-16+\sqrt{23936} }{-32}[/tex] or [tex]t=\frac{-16-\sqrt{23936} }{-32}[/tex]

⇒ [tex]t=\frac{-16+154.712}{-32}[/tex] or [tex]t=\frac{-16-154.712}{-32}[/tex]

⇒ [tex]t=\frac{138.712}{-32}[/tex] or [tex]t=\frac{-170.712}{-32}[/tex]

⇒ [tex]t=-4.33[/tex] or [tex]t=5.33[/tex]

Time cannot be negative. So the value is 5.33.

Hence we can conclude that the time required to hi the water is 5.33 seconds.

Learn more about quadratic equation here

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What is the slope of the straight line that goes
through (1, 8) and (3, 4) ?

Answers

Answer:

-2

Step-by-step explanation:

Slope of the line

[tex] = \frac{8 - 4}{1 - 3} \\ \\ = \frac{4}{ - 2} \\ \\ = - 2[/tex]

Which can be represented by the expression 17 – 2x? A. 17 less than twice a number B. the difference between 17 and twice a number C. a number x squared, subtracted from 17 D. 17 less than a number x squared

Answers

Answer:

B.

Step-by-step explanation:

If x is a number, then twice a number is 2x. The difference between 17 and 2x is 17-2x.

Common Error:

A. says 17 less than twice a number. Since it is 17 less, it is 2x-17 not 17-2x.

Hope this answer helped! :)

4. Suppose 11 out of 17 students said they were attending the football game. How many students out of 875 would you expect to attend the football game?

Please help me out ill mark brainliest​

Answers

We have to basically multiply:

11/17 x 475

And simplifying that we get

307.35

And since there can't be .35 person

So out final answer is 307

pls pls brainlist

hey! please help i’ll give brainliest

Answers

Answer:

b

Step-by-step explanation:

Answer: B

Explanation: It’s B

There are 6 marbles in a bag. are blue and 2 are red. What is the probability of
drawing 4 marbles that are all blue?

Answers

3 is to 2 is the probability of drawing 4 marbles that are all blue.

Graph the points (0, 6) and (-8, 0). Which of the following points would create a right triangle?
A (-6,8)
B(-8,6)
C(8, -6)
D(6,-8)​

Answers

Answer:

D, I think. Screenshot attached with the points.

Step-by-step explanation:

We have given two points (0, 6) and (-8, 0). The third point (8, -6) will make a complete right-angle triangle.

What is the right triangle?

A right-angle triangle is a triangle that has a side opposite to the right angle the largest side and is referred to as the hypotenuse. The angle of a right angle is always 90 degrees.

We have given two points  (0, 6) and (-8, 0). we want to find Which of the following points would create a right triangle.

We have mentioned the points on the graph that represent a right-angle triangle. we know that the point (8, -6) will make a complete right-angle triangle.

Learn more about a right angle;

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-3(8n+10)
distributive property

Answers

-24n - 30, i suggest using math.way before asking a math question aha
1.25 in decimal form
5/4 in factional form

How many grams of carbohydrates do 2.5 servings of rice have

Answers

Answer:

45 g

Step-by-step explanation:

I’m pretty sure the answer is 45

hello please help i’ll give brainliest

Answers

Answer:

Option B) His teachings became government philosophy.

The option is (B). His teaching became gov

PLEASE HELP EASY MATH!!!!

Answers

The answer is D.
This is because A=b•h which is A=8•5 A=40
Also P=b+b+h+h which is P=8+8+5+5 P=26

Express 9+9+9+9 as a single multiplication operation.​

Answers

Answer:

9 x 4

Step-by-step explanation:

Cada material en sus distintos estados de agregacion, cambia de volumen de forma diferente, sin embargo todos lo hacen en cierta medida. A esta propiedad se le llama

Answers

La respuesta correcta para esta pregunta abierta es la siguiente.

Aunque no se anexaron opciones o incisos para contestar, podemos comentar lo siguiente.

Cada material en sus distintos estados de agregación, cambia de volumen de forma diferente, sin embargo todos lo hacen en cierta medida. A esta propiedad se le llama Estados de Agregación de la Materia.

Las substancias cambian su composición debido a la presión o al cambio de temperatura a la que son sometidos. A ese proceso se le conoce como el estado de agregación de la materia, cuando las moléculas y átomos que constituyen esa matera se ve sometido a una transformación en su composición.

Podemos reconocer comúnmente cuatro estados de transformación de la materia, que son, el estado de plasma, el estado gaseoso, el estado líquido y el estado sólido

I need help with this question

Answers

Answer:

1 <—5⁰

25<—5²

1/25<—5-²

5<—5¹

The radius of a circle is 7 inches. What is the circle's area?
r=7 in
Use 3.14 for .
square inches

Answers

Answer:

153.86

Step-by-step explanation:

3.14 x (7x7) = 153.86

Please help me find volume for this pyramid I'm having trouble.

Answers

Answer:

A. 850 cubic feet

Step-by-step explanation:

Have a good day :)

Im not good with this stuff but i think it might be A ^^

find the value of x:)

Answers

Answer:

180 - 58 - 42 = x : sum of angles in a triangle add to 180

80 = x

It’s a right triangle. So you can obvi see that the angle is a 90 degree angle.

Exam
The blueprint's scale is
1 inch : 9 feet. If the gym's
area is 52 square inches on the
blueprint, what is the actual
square footage of the gym?
The area of the actual gym
is_square feet.

Answers

Answer:

4212 square feet.

Step-by-step explanation:

If the blueprint's scale is 1 inch : 9 feet.

Square both sides

(1in)² = (9ft)²

1in² = 81ft²

Given the  gym's  area as 52 square inches, hence;

52in² = x

Divide both expressions

1/52 = 81/x

x = 52 * 81

x = 4212ft²

Hence the area of the actual gym  is 4212 square feet.

i need help on how to answer this if anyone knows how to please respond. Thank you!

Answers

Answer:

23.25 m^3

Step-by-step explanation:

First you must find the area of the base you find it like this:

A(area)=1/2(one half)3.1(base)2.5(height)

you get 3.875(this is the area of the base)

now you have to multiply the area of base times the area of height like this:

A(area)=3.875(area of base)6(height)=23.25

so the answer is 23.25m^3

Hope I'm right have a great day!

Please Help ASAP
Jorge has a swimming pool that is rectangular in shape. The length and width of the pool are 24 feet and 14 feet. He also knows that the pool has a consistent depth of 5 feet. He needs to add 4 drops of chlorine for every 50 cubic feet in his pool. How many drops of chlorine should Jorge use to chlorinate his pool properly?

Answers

Answer:

140 drops

Step-by-step explanation:

Length of the pool = 24 feet

Width of the pool = 14 feet

Depth of the pool = 5 feet

Volume of the pool = length × width × depth

= 24 ft * 14 ft * 5 ft

= 1,750 ft³

Volume of the pool = 1,750 ft³

He needs to add 4 drops of chlorine for every 50 cubic feet in his pool.

Number of 50 cubic feet in the volume of the pool = Volume of the pool / 50 ft³

= 1,750 ft³ / 50 ft³

= 35

Number of 50 cubic feet in the volume of the pool = 35

How many drops of chlorine should Jorge use to chlorinate his pool properly?

Number of drops of chlorine Jorge should use = number of drops per 50 ft³ × Number of 50 cubic feet in the volume of the pool

= 4 × 35

= 140 drops

Number of drops of chlorine Jorge should use = 140 drops

What is the value of x. Please help out. This is due today!

Answers

Answer:

70°

Step-by-step explanation:

In the context it says that Franklin St. is parallel to Washington St.

The 110° formed by Franklin St. and Mulberry St. is a supplementary angle to Angle x.

Supplementary angles are angles that add up to each other to make 180°

So lets subtract:

180 - 110 = 70°

Angle x = 70°

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

a class has ten girls and three boys. if the teacher randomly picks ten students,what is the probability that he will pick all girls?​

Answers

Answer:

10/13

Step-by-step explanation:

You will first add all the students the mentioned which gives you 13 then since they ask what is the probability it the teacher would pick girls. You know there's 10 girls and 3 boys so it would be 10/13.                                  

2.

Identify the vertex of the graph. Tell whether it is a minimum or maximum.


A. (–1, –2); maximum

B. (–1, –2); minimum

C. (–2, –1); minimum

D. (–2, –1); maximum

Answers

It's B cause it's open upwards.
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