screenshot below-mathematics ,help please!!

Screenshot Below-mathematics ,help Please!!

Answers

Answer 1

Answer:

(a) range = difference between highest

mark and lowest mark

range of marks = 10 - 6

= 4

(b) total students = marks × frequency

(6×5)+(7×4)+(8×7)+(9×10)+(10×4)

= 30+28+56+90+40

= 244 students

(c) total frequency = 5+4+7+10+4

= 30

mean mark = total students/total

frequency

= 244/30

= 8.133

Answer 2

Answer:range-4 , no. of students-30, mean mark is 26

Step-by-step explanation:


Related Questions

what is the midpoint of the line segment with endpoints (-2, -2) and (4,6)?

Answers

Answer:

(1,2)

Step-by-step explanation:

To find the midpoint, add the x coordinates and divide by 2

(-2+4)/2 = 2/2 =1

add the y coordinates and divide by 2

(-2+6)/2 = 4/2 = 2

The midpoint is

(1,2)

You bought a magazine for $5 and four erasers. You spent a total of $25. How much did each eraser cost? Write the equation and solve. plz put the right answer

Answers

Answer:

[tex]5\[/tex]

Step-by-step explanation:

Let x be cost of 1 eraser.

[tex]5 +4x=25[/tex]

[tex]4x=20[/tex]

[tex]x=5[/tex]

Answer:

The buyer bought four erasers and a magazine for $25.

The cost of each magazine is $5

The cost of an eraser is x dollars

The cost of 4 erasers is 4x

Step-by-step explanation:

Cost of the Erasers + Cost of the Magazine = Total Cost

4x + $5 = $25

Subtract 5 from both sides to isolate the term with the variable.

4x + 5 -5 = 25 -5

4x = 20

The last thing you do is you divide it by 4 on both sides to isolate the variable.

x = 20/4 = $5

Taleen has 8 stamps in her collection, and she decides that each month she will add 3 stamps to her collection.

What does the rate of change represent?

What is the rate of change?

What does the initial value represent?

What is the initial value?

Answers

Answer:

The rate of change represents the number of stamps that is added each month.

The rate of change is 3

The initial value represents the number of stamps she had before she started adding 3 every month.

The initial value is 8

Step-by-step explanation:

The rate of change is 3 because that is how many stamps are added each month.

The initial value is 8 since that was the original amount she had before adding stamps every month.

Answer:

Answers are below

Step-by-step explanation:

The rate of change represents the number of stamps added every month.

The rate of change is 3.

The initial value represents how stamps she had before adding more.

The initial value us 8.

5( x + 7) - 3 ( x - 4) = 7x + 2 what is x?

Answers

Answer:

x=9

Step-by-step explanation:

5( x + 7) - 3 ( x - 4) = 7x + 2

Distribute

5x+35 - 3x +12 = 7x +2

2x +47 = 7x+2

Subtract 2x from each side

2x+47-2x =7x -2x+2

47 = 5x+2

Subtract 2 from each side

47-2= 5x+2-2

45= 5x

Divide by 5

45/5 =5x/5

9 =x

Answer:

x = 9

Step-by-step explanation:

→Distribute the 5 to (x + 7), Distribute the -3 to (x - 4):

5(x + 7) - 3(x - 4) = 7x + 2

5x + 35 - 3x + 12 = 7x + 2

→Add like terms:

2x + 47 = 7x + 2

→Subtract 2x from both sides:

47 = 5x + 2

→Subtract 2 from both sides:

45 = 5x

→Divide both sides by 5:

9 = x

A answer would be greatly appreciated explanation is not needed because I have to turn this in 3 minutes

Answers

Answer:

Anwser is C

Step-by-step explanation:

RS looks like PT so just add TQ and thats 3 i guess

Determine the reason that triangle NKL is congruent to triangle NJL.

Answers

Answer:

HL

Step-by-step explanation:

By the reflexive property of congruence, NL is congruent to NL. Note that NL is a leg shared by both triangles. Next, we can see that the two hypotenuses of the triangles are marked as congruent. This is enough information to prove that NKL is congruent to NJL by the HL congruence theorem.

Hope this helps! Please feel free to contact me if you have more questions :)

The Answer would be HL

10>j+5
What are the inequalities of j?

Answers

Answer:

j < 5

Step-by-step explanation:

=> 10 > j+5

Subtracting both sides by 5, we get

=> 10-5 > j

=> 5 > j

OR

=> j < 5

2. A map scale is 2 in = 400 miles. If the actual distance between Virginia 10 points
Beach and San Diego is 2,335 miles, approximately how many inches
apart is it on a map? *
9 in
10 in
11 in
a
12 in
hadow that is 9 feet long. At the same time, a 6 ft tall
10 points

Answers

Answer:

800

Step-by-step explanation:

I believe it its 800 inches Mark me brainliest

alguien me ayuda
5 (x-3) - 2 = 23​

Answers

5(x-3)-2=23

5x-15-2=23

5x-17=23

5x=6

X = 6/5


Find x.

Please help !!

Answers

I am pretty sure it’s C but I’m not very good at these kind of problems...

Mrs. Greer was making pancakes for breakfast. Baking is an exact science so correct measurements are crucial. She had a recipe that called for 1 1/2 cups of water for 2 cups of mix. She only had 1 1/2 cups of mix. How much water should she add as a fraction, since her measuring cup only has fractions. (This is a true story, I actually did this on Sunday, only an exact fractional answer will count)

Answers

Answer:

[tex]\frac{9}{8}[/tex] cup

Step-by-step explanation:

write a proportion 1 1/2 / x = 2 / 1 1/2. when solved, the answer is 9/8 cup

PLEASE HELP ANSWER BOTH QUESTIONS

Answers

Answer: the trap is 22.5 in. cubed

Step-by-step explanation:

Answer:

22.5 in cubed

Step-by-step explanation:

an arch in the shape of a semicircle is to be set up at the entrance of a festival the distance around the arch is about 110 ft what is the height of the arch in feet round your answer to the nearest whole number

Answers

Answer:

35

Step-by-step explanation:

circumference is pi x diameter since this is a semi circle you then divide it by 2

so if you work backwards 110x2 = 220 divided by pi

then you get the diameter and divide it by 2 to find the radius


Find the value of x in the given figure using properties of parallel lines.
A) 138°
B) 48°
C) Can't be determined.
D) 42°

Answers

Answer:

[tex]x = 42[/tex]

Step-by-step explanation:

Given

The diagram above

Required

Find x

When two parallel lines are divided in such a way as it is in the above figure;

x and 138 are said to be supplementary angles

The rule about supplementary angles is that, they add up to 180

In other words,

[tex]x + 138 = 180[/tex]

To solve this, we subtract 138 from both sides

[tex]x + 138 - 138= 180 - 138[/tex]

[tex]x = 180 - 138[/tex]

[tex]x = 42[/tex]

Hence, the value of x when solved using the properties of parallel lines is: [tex]x = 42[/tex]

8th grade word problem... Can someone please help if you don’t know then please don’t answer...

Answers

Answer:

30 of each type sold.

Step-by-step explanation:

It would be 30 since the LCM of 10 and 3 is 30.

If you need further explanation, reply to this answer but that's about it.

on a test, laura completes the expressions shown. 4^3 x 3^5 = 12^8. what mistake did she make and what is the correct expression

Answers

4^3= 4*4*4=64. 3^5= 3*3*3*3*3=243. 64*243=15,552. 12^8= 12*12*12*12*12*12*12*12= 429,981,696. 15,552≠429,981,696.

An angle is bisected by a segment forming two new angles. ∠ 1 and ∠ 2. Find m ∠DBC if m ∠2 = 27.

Wouldn’t it be still 27? So, like 27 + 27 = DBC?

Answers

Answer:

Yes, it will still be 27? So, like 27 + 27 = DBC.

Answer:

54

Step-by-step explanation:

Bisecting means to divide in half

<1  = <2

If <2 = 27 , then <1 = 27

The sum of the angle = 27+27 = 54

If DBC is the original angle, then DBC = 54

Round to the nearest hundredth : 3.2649

Answers

Answer:

3.26

Step-by-step explanation:

Rounding to the nearest hundredth means round to the nearest two decimal places.

To do this, all we need to look at is the 3rd decimal place.

Since 4 is not 5 or greater, that means we must round down, no matter how close it is to 5.

Therefore, the answer should just be 3.26

Answer:

3.26

Step-by-step explanation:

You round the second place after the decimal (6) by the place after it (4).

If the place after the number you need to round is a 5 or up, the decimal you round goes up one, if it is a 4 or lower it stays the same.

E.G. if 3.2649 was 3.2659 the hundreds would be rounded to 3.27. Since it's a 4, the six stays the same at 3.26.]

hope this helps (/o.o)/<3

Find the mode of the data.

10, 15, 7, 15, 15, 9, 11, 7, 9, 10

Answers

Answer:

15

Step-by-step explanation:

mode is the most common number in a set. and in the question most common is 15

During a recent rainstorm, 8 centimeters of rain fell in Dubaku's hometown, and 2.36 centimeters of rain fell in Elliot's hometown. During the same storm, 15.19 centimeters of snow fell in Alperen's hometown.

Answers

Answer:

5.64 cm

Step-by-step explanation:

Required:How much more rain fell in Dubaku's town than in Elliot's town?

8 centimeters of rain fell in Dubaku's hometown

2.36 centimeters of rain fell in Elliot's hometown

We are asked to find how much more rain fell in Dubaku's town than in Elliot's town so it is calculated as the difference between the rain in both of there towns and is given by:

Difference in rain= 8-2.36

Difference in rain= 5.64 cm.

Therefore, 5.64 cm of more rain fell in Dubaku's town than in Elliot's town.

Answer:

5.64

Step-by-step explanation:

Write the equation 0.3x2 + 5x - 7 = 0 in general form and then choose the value of "b."
opinions are :
5
70
50

Answers

Answer:

b = 5

Step-by-step explanation:

0.3x^2 + 5x - 7 = 0

ax^2 + bx + c is the general form of a parabola

a = ,3

b = 5

c = -7

Answer:

The answer is 50

Step-by-step explanation:

I just tried 5 and it is incorrect.

What is the value of the exponential expression below 161/2
A.2
B.8
C.6
D.4

Answers

Answer:

D

Step-by-step explanation:

I'm taking this to mean 16^(1/2)

If I am correct, then the answer is the square root of 16 which among the answers given is 4

So the answer is D

PLEASE THIS IS TIMED, PLEASE HELP ME ANSWER THIS QUESTION!

A power failure on the bridge of a Great Lakes freighter has resulted in the ship's navigator having to do her own calculations. She measures the angle between the ship's course and a lighthouse on shore as 32°. After the ship has travelled 1500 m, she measures the angle to be 72°. Determine if the ship was closer to or farther from the lighthouse at the second sighting, and by what distance

Answers

Answer:

I think the ship was farther by 40°

type a is 5 feet tall and grows at a rate of 18 inches per year Type B is 10 feet tall and grows at a rate of 8 inches per year. How many years will it take for these trees to be the same height

Answers

Answer:

The height will be same in 6 years time

Step-by-step explanation:

Since we do not know the years it would take, we can call this x

Kindly note that 12 inches is 1 feet, so 5 ft would be 60 inches and 10 feet will be 120 inches

Now, the height of tree A after x years would be;

60 + 18x

For tree B, height would be 120 + 8x

Now, we were made to know that they have equal height at the xth year.

Thus;

60 + 18x = 120 + 8x

10x = 120-60

10x = 60

x = 60/10 = 6

An integer 3a5b can be divided by 5 and 6, what is the value of a + b.

Answers

Answer:

a + b = 1 or 4

Step-by-step explanation:

The integer = 3a5b

The factors of the integer includes 5 and 6

∴ 5 × 6 = 30 is a factor of the integer hence 10 is also a factor which gives b = 0

We check for factors of four digit numbers with the first digit = 3, last digit = 0, penultimate to the last digit = 5 and divisible by 30

We have a50 divisible by 30, which gives, a5 divisible by 3 which includes

15 and 45 hence a can be 1 or 4 and a + b = 1 + 0 = 1 or  4 + 0 = 4.

The ratio of men to women working for a company is 3 to 2 . if there are 39 women working for the company, what is the total number of employees?

Answers

NVM IDK please delete my answer sorry idk how

150 adults complete a survey.
80 are women

write the ratio men:women in its simplest form

Answers

Answer=7:8

150 are adults

70:80 men to women

To simplify it you just to half it untill you can't no more,or find a mutiple that goes into both of them.

I divided them both by 5 = 14:16

Now divide  by two 7:8

Hope that's right!

Calculate the perimeter of ABCD

Answers

Answer:

28.13 cm

Step-by-step explanation:

The first step we need to do is create the segment AC.

Then, we can find its length using the law of cosines in the triangle ABC:

b^2 = a^2 + c^2 - 2*a*c*cos(B)

b^2 = 8^2 + 6^2 - 2*8*6*cos(95)

b^2 = 64 + 36 - 96*(-0.0872)

b^2 = 108.37

b = 10.41 cm

Then, in the triangle ADC, we can use the Pythagoras' theorem to find the length of DC:

DC^2 + DA^2 = AC^2

DC^2 + 25 = 108.37

DC^2 = 83.37

DC = 9.13 cm

So the perimeter of ABCD is:

Perimeter = AB + BC + CD + DA

Perimeter = 6 + 8 + 9.13 + 5 = 28.13 cm

Answer:

The perimeter of the shape is 28.13 cm

Step-by-step explanation:

First of all, we will have to draw a line from point A to point C. This will divide the shape into two parts, both of which are triangles.

We will use the dimensions of the newly formed triangle ABC to get the side AC.

The cosine formula will be apt for this purpose:

[tex]AC^{2}=AB^{2}+BC^{2}-(2 \times AB\times BC\times cos \theta)[/tex]

[tex]AC^{2}=6^{2}+8^{2}-(2 \times 6\times 8\times cos( 95))=108.37[/tex]

[tex]AC=\sqrt{108.37}=10.41 cm[/tex]

Now we have AC as 10.41 cm,

we can see that AC forms the hypothenuse of the right-angled triangle ADC.

From Pythagoras' theorem,  DC can be calculated as

[tex]DC =\sqrt{AC^{2}- AD^{2}}[/tex]

[tex]DC =\sqrt{10.41^{2}- 5^{2}}= 9.13 cm[/tex]

Therefore the perimeter of the shape is 8 + 5 + 9.13 + 6 =28.13 cm

The perimeter of the shape is 28.13 cm

What is the coefficient in the expression 5x^2 +3 ?
A. 5
B. X
C. 3
D. 2

Answers

Answer:

the coefficient is A.5

Answer:

5

Step-by-step explanation:

5x^2 +3

The coefficient is the number next to the variable

5 is the coefficient

NEED HELP ASAP!!!

A six-sided number cube is rolled twice.

What is the probability that the first roll is an even number and the second roll is a number greater than 4?

One-sixth
One-third
Two-thirds
Five-sixths

Answers

Answer:

1/6

Step-by-step explanation:

an even number has a 1/2 chance of being rolled and a number greater than 4 has a 1/3 chance of getting rolled. multiply 1/2 and 1/3 together and you get 1/6 for your answer.

Other Questions
What would be the long and short term impacts we would see in the world if no one in the world used solar panels? Kevin says that lines p and m will eventually intersect.Lines A and B intersect. Plane A contains lines p, m, and n. Line n is horizontal on the plane. Lines p and m are both going in the same direction and are identical. Plane B contains vertical line l which forms a right angle with line n.Is Kevin correct?No, because they are non-coplanar.No, because they are parallel.Yes, because they are perpendicular.Yes, because they are coplanar. ?me no understand help mee Read this sentence. The attorney gave his client sound advice. What is the subject in this sentence? A) gave B) advice C) client D) attorney A school has a track that is made up of a rectangle with two semicircles at each end, as pictured. The perimeter of the track, P, is 395 m. The rectangular part of the track will be covered with grass. The grass comes in pieces that each have an area of 1.35 square metres. Determine the minimum number of pieces of grass required to cover the rectangular part of the track. Sandra is a lawyer. She is working on x number of cases. She gets 8 more cases to work on. She now has more than 29 cases that she is working on. Which inequality could be used to figure out how many cases Sandra is working on? * Answers. 8x > 29 x + 8 29 x - 8 < 29 The speaker in Hughess poem "Democracy" encourages people to bravely stand up for what is right.peacefully support change.patiently wait for equality to come.silently let change take its course. Each student (input) has a unique student ID number (output) . Function or not a function Please who can answer these questions about Identify structure of the following each sentences 3) What major events and atrocities of World War II may haveprompted nations to consider guidelines for protecting human rights?NEED TO KNOW ASAP PLEAE HELP ? A patient in her mid-twenties saw an ophthalmologist for a routine eye exam. Due to her young age, a glaucoma est was not performed. She later was diagnosed with glaucoma and sued the ophthalmology group, alleging negligence in failing to preform a glaucoma test. The defense argued hat the standard of care was to not administer the test to patients younger than 40 because the instance of glaucoma at younger ages was rare. Which of the following statements do you think best describes the applicable standard of care in this case? 1. The defense should prevail because the reasonable, customary, and prudent course of action followed by practitioners in the same or similar circumstances would be the same. 2. The plaintiff should prevail because all patients should be protected against glaucoma, regardless of age. A company purchased a commercial dishwasher by paying cash of $4,600. The dishwasher's fair value on the date of the purchase was $4,980. The company incurred $420 in transportation costs, $350 installation fees, and paid a $250 fine for illegal parking while the dishwasher was being delivered. For what amount will the company record the dishwasher?A company purchased a commercial dishwasher by paying cash of $4,600. The dishwasher's fair value on the date of the purchase was $4,980. The company incurred $420 in transportation costs, $350 installation fees, and paid a $250 fine for illegal parking while the dishwasher was being delivered. For what amount will the company record the dishwasher? Why was the second fugitive law enacted?... please answer I will give you brainiest Use the formula above to find the Celsius temperature equivalent to 185F. A. 85C B. 153C C. 102C D. 68C at what point does the external energy enter the system? You have 120 feet of fencing for a garden. The fencing is sold in 5-foot sections. What is the area of the largest garden you can build? The following question refers the novel the three musketeers by Alexandra Dumas what is drug metabolism 56 has how many 2\3's in it *ANSWER WITH DETAILS PLS*