If the weight of 90 books is 50kg, what is the weight of 180 such books. In both proportion and unitary method.

Answers

Answer 1

Answer: See explanation

Step-by-step explanation:

From the question, we are informed that the weight of 90 books is 50kg. We need to get the weight of a book first and this will be:

= 50/90

= 5/9

Therefore, the weight of 180 such books will be 5/9 multiplied by 180. This will be:

= 5/9 × 180

= 100kg


Related Questions

8TH GRADE MATH PLS HELP

Answers

The answer is 17
180-163=17

Answer: x = 152% hope this will help

Step-by-step explanation:

If u moved the angle down you will find out what the answer to x is

What is the mode, mean, median for these numbers?
{18,18,63,63,84}

Answers

Answer:

Mean= the average of the number set= 18+18+63+63+84=246/5=49.2

Median- the number in the middle of the set= 63

Mode- the number(s) that repeat=1 8, 63

Range- the amount between the highest and lowest numbers= 84-18=66

Step-by-step explanation:

The mode, mean, and median of the data will be 18 or 63, 49.2, and 63, respectively.

What are statistics?

Statistics is the study of collection, analysis, interpretation, and presentation of data or discipline to collect and summarise the data.

The data set is given below.

18, 18, 63, 63, 84

The mode of the data is given as,

Mode = Frequency of the repeated number

Mode = 18 and 63

The mean of the data is given as,

Mean = (Sum of observations) / (Number of observations)

Mean = (18 + 18 + 63 + 63 + 84) / 5

Mean = 246 / 5

Mean = 49.2

The median of the data is given as,

Median = (n + 1)th / 2

Median = (5 + 1)th / 2

Median = 6th / 2

Median = 3th

Median = 63

The mode, mean, and median of the data will be 18 or 63, 49.2, and 63, respectively.

More about the statistics link is given below.

https://brainly.com/question/10951564

#SPJ2

Given the following rectangle: Solve for x.
10x - 43
3x + 6

Answers

Answer:

x=9

Step-by-step explanation:

I basically just used the bottom left corner and since all of them are 90 degrees, i did 90-18 then i got 72 and i just divided it by 8 and got 9.

Hope this helps!

Answer:

The value of (x) is 19

Step-by-step explanation:

8x - 18 = 4x + 58

4x = 76

x = 19

I hope this is help :) "please tell me if that false"

someone wanna help me fill this out? ​

Answers

Answer:

what is it?

Step-by-step explanation:

1. Identify the most reasonable unit to measure the volume of a tumbler.
2. Which is the closest to the weight of a tomato?
3. Identify the most reasonable unit to measure the volume of a small bottled water.
4. Identify the most reasonable unit to measure the time it takes to fly from Davao to Cebu.
5. Jeffrey is driving his car. Approximate the amount of time it takes to drive from San Pedro
Cathedral to Gaisano mall.
6. Which is the closest to the height of a door?
7. Estimate the measurement of the angle:​

Answers

Answer:

1. Gram

2. Kilogram

3. Millilitre

4. Hour

5. Minute

6. Feet

7. Radian

Explanation :

1.Gram

Because - For small quantity, the most reasonable unit is gram.

2.Kilogram  

Because - For large quantity , the most appropriate unit is kilogram.

3. Millilitre  

Because - For small volume , the most appropriate unit is millilitre.

4.Hour

Because - For large amount of time , the most appropriate unit is hour.

5.Minute

Because - For small amount of time , the most appropriate unit is minute.

6.Feet  

Because - For large height , the most appropriate unit is feet.

7.Radian

Because - For angle , the most appropriate unit is degree or Radian

Answer:

that my answer

Step-by-step explanation:

hope it helps

use the Pythagorean theorem to find c!!!!

Answers

a^2 + b^2 = c^2
6^2 + 8^2 = c^2
36 + 8^2 = c^2
36 + 64 = c^2
100 = c^2
√100 = c
10 = c

hope this helped, pls mark brainliest :)

The ratio of boys to girls in a class is 5 : 6. If there are 20 boys, how many girls are there?

Answers

Answer:24

Step-by-step explanation:

this symbol (:) is equivalent to a division sign. We can set up an equation; 5/6=20/x. For this specific problem, we can see that you can multiply 4 to reach 20. Then you can multiply 6 also by 4 and get 24. Generally, you should cross multiply. 5x=120; x=24. The final answer is 24 girls.

James is building a doll house that is proportional to his own house. He is using a scale of 0.5 inch = 1 foot. If the doll house is 12.3 inches tall, how tall is his house?

Answers

24.6 because 12.3 divided by 0.5 is 24.6

Line j passes through points (9, 6) and (6, 8). Line k passes through points (7, 9) and (5, 6). Are line j and line k parallel or perpendicular?

Answers

9514 1404 393

Answer:

  perpendicular

Step-by-step explanation:

A graph shows the lines are not parallel. The lines are perpendicular.

__

j has a slope of -2/3 (down 2 for each 3 to the right)

k has a slope of 3/2 (up 3 for each 2 to the right)

These slope values have a product of 1, typical of perpendicular lines.

Help ASAP I’ll mark you as brainlister

Answers

Answer:

76 units

Step-by-step explanation:

In the given figure, a circle with center Q is inscribed in triangle AHD.

Let the circle with center Q touches the side HD at point N.

So, AT & AM, DM & DN and HT & HN are tangents drawn from external points A, D and H respectively.

Since, measure of tangsnts drawn from external point to a circle are equal.

Therefore,

AM = AT = 18

HN = HT = 8

DM = DN = 12

AH = AT + HT = 18 + 8 = 26

AD = AM + DM = 18 + 12 = 30

HD = DN + HN = 12 + 8 = 20

Perimeter of triangle

= AH + AD + HD

= 26 + 30 + 20

= 76 units

I NEED SOMEONE TO ANSWER PLZZZ!!!

Answers

Answer:

THE ANSWER IS (B)

Step-by-step explanation:

Answer:

B! Because remainder means extra things in an equation. You'll learn it in the future as decimals.

Can someone help me?! The picture is below you don’t have to explain if you don’t want to!!

Answers

Answer:

(a) 3:4

(b) 3:4

(c) 9:16

Step-by-step explanation:

(a) The ratio of the sides would be 15:20 but after you simplify them (divide by 5), you'd get 3:4

(b) The ratio of the perimeter would be 60:80 because you're multiplying each side length by 4. When you simplify this again (divide by 20), however, it becomes 3:4 again

(c) To find the area, you would multiply the width times height, the ratio would be 225:400. You would get the greatest common factor which is 25 and divide it on both sides to get 9:16

A ship is 350 feet from lighthouse which is 40 feet tall, find the angle of depression from the top of the lighthouse to the ship.

Answers

Answer:

6.519801752°

Step-by-step explanation:

Let θ represent the angle of depression

tanθ=40/350

θ=tan^-1(40/350) *tan^-1 means inverse tan*

θ=6.519801752°

6.52 degrees is the correct answer

Find 3 rational numbers between 3/7 and 13/7​

Answers

Answer:

5/7 , 6/7 , 8/7

I hope im right!!


Can someone help plzzz

Answers

Answer:

81 is your answer :)

Step-by-step explanation:

b x h = a

9 x 9 =  81

The answer is 18, because the area means multiply. In this case you will multiply 9 x 9 and get 18.

-6 + x = 4x pls help ! ​

Answers

Answer:

Step-by-step explanation:

Alright so we are going to be simplifying here

-6 + x = 4x Flip sides

x-6=4x

After that,

x-6=4x  Subtract 4x from both sides

-3x-6=0

Step 3

-3x-6=0  Add 6 to the sides

-3x=6

Step 4

-3x=6  Divide the sides by 3

-2

So therefore,

Your answer would be x=-2

what is 8 x 7/12??????​

Answers

Answer:

[tex] \frac{8}{1} \times \frac{7}{12} = \frac{56}{12} = \frac{14}{3} [/tex]

................. ;)

can someone help me?
-2+(-8+9)=

Answers

Step-by-step explanation:

-2+(-8+9)

= -2+(1)

= -2+1

= -1

A rectangular carpet is 5 times as long as it is wide. It’s width is 3 meters. What is the area of the carpet?

Answers

Answer:

The area of the square 45 [tex]meters^{2}[/tex]

Step-by-step explanation:

Width 3 meters

3x5=15

Length 15 meters

3x15=45

Find x
Need help fast please !!

Answers

Answer:

[tex] x = 4 \sqrt{3} [/tex]

Step-by-step explanation:

By Pythagoras Theorem:

[tex] {x}^{2} = {( \sqrt{8 \times 4}) }^{2} + {(4)}^{2} \\ \\ {x}^{2} = {( \sqrt{32}) }^{2} + {(4)}^{2} \\ \\ {x}^{2} = 32 + 16 \\ \\ {x}^{2} = 48 \\ \\ x = \sqrt{48} \\ \\ x = \sqrt{ {4}^{2} \times 3} \\ \\ x = 4 \sqrt{3} [/tex]

A triangle has side lengths of (3.7b+ 1.7) centimeters, (1.3b + 1.1) centimeters,
and (7.1c +5.1) centimeters. Which expression represents the perimeter, in
centimeters, of the triangle?

Answers

Perimeter of Triangle -:

( 3.7 b + 1.7 +1.3b +1.1 + 7.1 c + 5.1 )

now solve by ur self

sin40 cos40 / cos 10

Answers

Answer:

0,487925581

Step-by-step explanation:

guess I tried

Answer:

0.59225502205

Step-by-step explanation:

I guess this might be ok

Mrs. Zarate is 4 feet 11 inches tall. If there are 2.54 centimeters
in an inch, what is her height in centimeters?

Answers

Answer:

149.86 cm

Step-by-step explanation:

4 ft 11 in = 59 inches

2.54(59) = 149.86

Answer:

149.86

Step-by-step explanation:

A class of 195 students went on a field trip. They took 19 vehicles, some cars and some buses. If each car
holds 5 students and each bus hold 25 students, how many buses did they take?

Answers

Answer:

Number of cars = 14

Number of buses = 5

Step-by-step explanation:

Let

x = number of cars

y = number of buses

x + y = 19 (1)

5x + 25y = 195 (2)

From (1)

x = 19 - y

Substitute x = 19 - y into (2)

5x + 25y = 195

5(19 - y) + 25y = 195

95 - 5y + 25y = 195

- 5y + 25y = 195 - 95

20y = 100

y = 100/20

y = 5

Substitute y = 5 into (1)

x + y = 19

x + 5 = 19

x = 19 - 5

x = 14

Number of cars = 14

Number of buses = 5

Based on the number of vehicles and the number that each vehicle can take, the number of buses required is 4 buses.

There are 19 vehicles which take 5 students each. This means that the number of kids entering buses will be:

= 19 x 5

= 95 students

The students entering buses will be:

= Total number of students - Kids in vehicles

= 195 - 95

= 100 students

If each bus takes 25 students, the number of buses required is:

= 100 students / 25

= 4 buses

In conclusion, 4 buses were taken.

Find out more at https://brainly.com/question/15806057.

Which expressions are equivalent to z + (z + 6)z+(z+6)z, plus, left parenthesis, z, plus, 6, right parenthesis ?

Answers

Answer:

5 lolsjjhgjh h h gh h h hh f ggugy

Add these two expressions. (–45t + 53s) and (–3 – 75s + 2t) 65t + 415s – 3 –145t – 115s – 3 –115t + 113s – 3 115t – 415s + 2

Answers

Answer:

- 43t - 22s - 3

Step-by-step explanation:

(–45t + 53s) + (–3 – 75s + 2t)

Opening the brackets

-45t + 53s -3 - 75s + 2t

Collecting like terms

-45t + 2t + 53s - 75s -3

Simplify the expression

-43t -22s - 3

Mike is four less than three times Nicole's age. Together they are 36 years old. Find the age of each person.

Answers

Nicole is 10 which makes Mike 26

find x!!!!! THANKS!!!!! FIRST TO ANSWER CORRECTLY GWTS BRAINLIEST

Answers

Answer:

35

Step-by-step explanation:

hope it helps :)

X equals 35. i hope this helps ;)

help please due in 45 mins pleaseee helpppppp omg

Answers

Answer:

1. 0.6

2. 0.08333

.

.

.

.

i hope this helps

Answer:

I can't exactly show the work very well or in the way you want but I can answer the question...

Step-by-step explanation:

3/5 as a decimal is 0.6 and 1/12 as a decimal is 0.08333 (it goes on forever)

Hope this helps!

PLEASE HELP THIS IS ALMOST DUE

Answers

Answer:

32.85°

Step-by-step explanation:

Used a fancy calculator & just took a test like this

good luck, i hope this helps :)

Answer:

x = 32.8599

Step-by-step explanation:

you have the hypotenuse and the side adjacent to the angle, so you use

Cos(x) = adjacent/hypotenuse

so

Cos(x) = 21/25

x = cos^-1(21/25)

put this in a calculator:

x = 32.8599 (rounded)

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