a) how many 15-year old students took part in the survey?

A) How Many 15-year Old Students Took Part In The Survey?

Answers

Answer 1

By observing the frequency polygon,

the number of 15 year old students who took part in the survey are 300.

What is frequency polygon?

A frequency polygon is almost identical to a histogram, which is used to compare sets of data or to display a cumulative frequency distribution. It uses a line graph to represent quantitative data.

To calculate the number of students, we add all frequency points corresponding to the time intervals.

Learn more about frequency polygon here

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Related Questions

A restaurant wants to study how well its salads sell. The circle graph shows
the sales over the past few days. If 5 of the salads sold were garden
salads, how many total salads did the restaurant sell?
The restaurant sold salads over the past few days.

Answers

Answer:

20 total salads

Step-by-step explanation:

If garden salads make up 25%, and they sold 5 garden salads, you have to do 5 times 4 because 25% times 4 is 100% of the chart.

Look at the question below

Answers

Choice A has a greater COP

:)

Simplify: 3+y+y+y+2 ​

Answers

Answer:

3y + 5

I really hope this helps

4/9
A bag contains 4 apples, 6 pears and 8
oranges. What is the probability of
picking an orange? (in simplest form)
Using the question above, what is the
COMPLEMENT of picking an orange from
the bag?

Answers

Answer:

The probability of picking an orange is 8/18, or 4/9.

8/18 of the fruits are oranges, so 10/18 of the fruits are not oranges. The complement of picking an orange is 10/18 or 5/9.

Step-by-step explanation:

There are 4 apples, 6 pears, and 8 oranges. That adds up to 18 fruits. 8 of those are oranges, so the probability of picking an orange is 8/18, or 4/9 simplified.

The complement means all outcomes that are NOT the favorable outcome, or in this case, all outcomes that are not oranges. There are 8 oranges out of 18, so there are 10 fruits that are not oranges. This makes the complement 10/18, or 5/9 simplified.

Answ2/6 or 33% chance of getting an apple, 3/24 or 13% of getting a pear and 13/24 or 54% chance of getting an orange hope that helps.er:

Step-by-step explanation:

Graph add and brainliest

Answers

Answer:

i think the answer is d.

Step-by-step explanation:

tell me if this is wrong.

x^{2} -81 find the diffrence of squares

Answers

Answer:

yuygiiyc

ijcyycyccjc

c

ycyi

cyi

chicihihcñicyñi.hcjck kh.i .h.icy

Step-by-step explanation:

bgvghuhukvkbkkk

Please help me.
find x and AC value ​

Answers

Answer:

x=7 and AC is 46

Step-by-step explanation:

hope it helps

Which of the following shapes describes the 2d figure formed by slicing parallel to the base of a triangular prism
a. rectangle
b. triangle
c. square.
d.trapizoid

Answers

Answer:

c. square.

Step-by-step explanation:

squares have 4 parallel sides so if you cut it in half you will still be parallel

The 2D figure formed by slicing parallel to the base of a triangular prism is option B. Triangle.

What is a Triangular Prism?

Triangular prism is the three dimensional figure which consists of two triangular shaped bases and three rectangular lateral faces.

WE have to find the 2d figure formed by slicing parallel to the base of a triangular prism.

We know that base of a triangular prism is triangle.

So, when we slice a parallel plane to the base of the triangular prism, the resulting 2D shape will also be a triangle.

Hence the 2D shape formed by slicing parallel to the base of a triangular prism is triangle.

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AOC and BOD are diameters of a circle, centre O. Angles BAD and CDA are 90°. Prove that triangle AND and triangle DCA are congruent


Please help me, i have a test tomorrow and i am confused ⭐️

Answers

Answer:

By using SAS which stands for Side, Angle, Side.

Step-by-step explanation:

This means that if we have two angles and side measures that are equal to the corresponding angles and side measures of the other triangle then they are congruent.

8-(5.5) please help I need it ASAP

Answers

Answer:

2.5

Step-by-step explanation:

A tower that is 137 feet tall cast a shadow 152 feet long find the angle of elevation of the sun to the nearest degree

Answers

Answer: 41 will be your answer

Step-by-step explanation:

Given: EL≅KP Prove: KE≅LP

Answers

Answer:

See Below.

Step-by-step explanation:

We are given that:

[tex]EL\cong KP[/tex]

And we want to prove that:

[tex]KE\cong LP[/tex]

Congruent chords have congruent arcs. Therefore:

[tex]\stackrel{\frown}{EL}\, \cong \, \stackrel{\frown}{KP}[/tex]

Arc EL is the sum of Arcs LP and PE:

[tex]\stackrel{\frown}{EL}\,=\, \stackrel{\frown}{LP}+\stackrel{\frown}{PE}[/tex]

Likewise, Arc KP is the sum of Arcs KE and PE:

[tex]\stackrel{\frown}{KP}\, =\, \stackrel{\frown}{KE}+\stackrel{\frown}{PE}[/tex]

Since Arcs EL and KP are congruent:

[tex]\stackrel{\frown}{LP}+\stackrel{\frown}{PE}\, =\, \stackrel{\frown}{KE}+\stackrel{\frown}{PE}[/tex]

Subtraction Property of Equality:

[tex]\stackrel{\frown}{LP} \, \cong\, \stackrel{\frown}{KE}[/tex]

Congruent arcs have congruent chords. Therefore:

[tex]LP\cong KE[/tex]

The area of a rectangle is 21.54 square feet. If the width is 6 feet, what is the length and what is the perimeter?

Answers

i think it’s 55.08.

Find the area of the regular polygon. Round to the nearest tenth if
necessary.
7.5
5.1

Answers

Answer:

that will be 25 if you put 30 in the thing

If i have 2 lemons and i give 1 away. how many do i have now?

Answers

1 lemon?

.....................................

David had 20 pencils 5 of them were green and 15 are purple what percentage were green what percentage were purple

Answers

Answer:

25% were green

Step-by-step explanation:

Answer:

 

Percentage of Green Pencils = 100* Green Pencils / Total Pencils

Percentage of Green Pencils = 100* 5/20

Percentage of Green Pencils = 500 / 20

Percentage of Green Pencils = 25%

Step-by-step explanation:

sorry i didnt know the percentage of purple

25 points need ASAP
Write and solve a proportion to answer the question.

17 out of 25 marbles in a bag are red. What percent of the marbles are red? Show work,


-Answers for the points will result in a report-

Answers

Answer:

68%

Step-by-step explanation:

17 divided by 25 =0.68

make the decimal into a precent

Answer:

5℅

Step-by-step explanation:

Hope I helped, have g'day!

3. You need to be at least 39.37 inches tall (about a meter) to ride on a bumper car. Diego's cousin is 35.75 inches tall. How many more inches will he need to grow before Diego can take him on the bumper car ride?



Answers

Answer:

3.62

Step-by-step explanation:

39.37-35.75=3.62

CAN ANYONE PLEASE HELP THANKS

Answers

Answer:

[tex] n = \sqrt[3]{78} [/tex]

Step-by-step explanation:

[tex] - 10 - {n}^{3} = - 88 \\ \\ - {n}^{3} = - 88 + 10 \\ \\ - {n}^{3} = - 78 \\ \\ {n}^{3} = 78 \\ \\ n = \sqrt[3]{78} [/tex]

A. The function shown on the graph has a greater rate of change, but a lower starting point.
B. The function shown on the graph has a greater rate of change and a higher starting point.
C. The function shown on the graph has a smaller rate of change and a lower starting point.
D. The function shown on the graph has a smaller rate of change, but a higher starting point.

Answers

I think it is A

sorry if it is wrong!

Explain in your own words why a constant has a degree of zero

Answers

Answer:

See below

Step-by-step explanation:

Because a constant never changes. It stays constant (it's in the word)! The function never changes since the slope is 0, therefore there's no vertical change.

Answer:

Step-by-step explanation:

The function value never changes and is always graphed as a horizontal line so theirs slopes become zero. This means there is no change that is vertical within and throughout the function.

Helped by the ONE & ONLY #QUEEN aka #DRIPPQUEENMO!!

HOPE THIS HELPED!!

PLEASEE HELP ME FAST

Answers

Answer:

Step-by-step explanation:

2/3 ÷ 1/3

=2/3 × 3/1 (recipracol)

=6/3

=2

Answer:

2 and [tex]\frac{8}{5}[/tex]

Step-by-step explanation:

when you divide by a fraction you just multiply by its reciprocal

[tex]\frac{2}{3}[/tex] ÷ [tex]\frac{1}{3}[/tex] = [tex]\frac{2}{3} * \frac{3}{1}[/tex]

then just solve

[tex]\frac{6}{3}=2[/tex]

for the second one do the same thing

[tex]\frac{4}{5} * \frac{2}{1} =\frac{8}{5}[/tex]


One number is 2 times the other number. The sum of the numbers is
150. Find the numbers.

Answers

Answer:

x = 50; 2x = 100

Step-by-step explanation:

x + 2x = 150

3x = 150

x = 50

2x = 2(50)

2x = 100

Change this fraction into a decimal: 56/100

.056


.56


5.6

Answers

Your answer is .56 !

Mark brainliest?

Can someone pls help me find the area of this please

Answers

12.56

Step-by-step explanation:

A = π x r^2

r =2

2^2 = 4

π × 4 = 12.56

Which shapes make up this composite figure?

A cylinder and 2 half spheres.
a cylinder and a cone
a cylinder and two cones
a half sphere, a cylinder, and a cone
a sphere and a cylinder

Answers

Answer:

A cylinder and 2 half spheres

Step-by-step explanation:

Using my eyes, I see 1 cylinder and 2 half spheres at the ends of the cylinder.

The shapes that combined to form the comppsite figure are a Cylinder and two half Sphere.

Option A) A cylinder and 2 half spheres is the correct answer.

What is a cylinder and a hemisphere?

A cylinder is simply a 3-dimensional shape having two parallel circular bases joined by a curved surface.

A hemisphere is gotten when a sphere is cut into two equal halves. It is half of a shere.

From the Image, one can see that a cylinder and two hemispheres combined to form the composite figure.

Hence, the shapes that combined to form the comppsite figure are a Cylinder and two half Sphere.

Option A) A cylinder and 2 half spheres is the correct answer.

Learn more about hemisphere here: brainly.com/question/3362286

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A spinner is divided into five colored sections that are not of equal size: red, blue, green, yellow, and purple. The spinner is spun several times, and the results are recorded below:
Spinner Results
Color Frequency
Red 2
Blue 10
Green 3
Yellow 19
Purple 20
Based on these results, express the probability that the next spin will land on blue as a decimal to the nearest hundredth.

Answers

Answer:

10/54 = 0.185

Point A'(2,3)A

(2,3)A, prime, left parenthesis, 2, comma, 3, right parenthesis is the image of A(3,-4)A(3,−4)A, left parenthesis, 3, comma, minus, 4, right parenthesis under a translation.
Determine the translation.
Use non-negative numbers.
A translation by
units to the

and
units

Answers

Answer:

Step-by-step explanation:

1 unit left and seven units up. I got the answer right on Kahn

Suppose that the path of a newly discovered comet could be modeled by using one branch of the equation x2/4 - y2/9=1, where distances are measured in astronomical units. Name the vertices of the hyperbola and then graph the hyperbola.

Answers

Answer:

the answer is A just tool the quiz lesson 5 hyperbolas Algebra 2B unit 5 these are the correct answers

1.A

2.B

3.D

4.A

5.B

6.D

7.A

hopes this helps everyone

The hyperbola has two vertices at (-2,0) and (2,0)

We have given that the equation

[tex]\frac{x^2}{4}-\frac{y^2}{9}=1[/tex]

What is the equation of the hyperbola?

[tex]\frac{x^{2} }{a^2}+\frac{y^2}{b^2} =1[/tex]

Compare the above equation of the hyperbola with given equation

therefore a=2

vertices are (-a,0) and (a,0)

Therefore the vertices are (-2,0) and (2,0)

See the graph of the hyperbola in link given below.

The hyperbola has two vertices at (-2,0) and (2,0)

To learn more about hyperbola visit:

https://brainly.com/question/2351925

Solve for an angle in right triangles

Answers

Answer:

66.42

Step-by-step explanation:

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