1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rufina [12.5K]
3 years ago
13

The ratio of length to breath of a room is 7:5, find the length is the breath is 10cm

Mathematics
1 answer:
8090 [49]3 years ago
4 0

Answer:

let the length be x

here ratio=7:5

breadth = 10cm

length=?

now,

7/5=x/10

or,5×x=7×10

or,5x=70

or,x=70÷5

or x =14

so the length of room is 14 cm

You might be interested in
4. A drawer contains 21 black socks and 9 white socks. A number generator simulates randomly selecting 10 socks from the drawer.
Nookie1986 [14]

There are 21 black socks and 9 white socks. Theoretically, the probability of picking a black sock is 21/(21+9) = 21/30 = 0.70 = 70%

Assuming we select any given sock, and then put it back (or replace it with an identical copy), then we should expect about 0.70*10 = 7 black socks out of the 10 we pick from the drawer. If no replacement is made, then the expected sock count will likely be different.

The dot plot shows the data set is

{5, 5, 6, 6, 7, 7, 7, 8, 8, 8}

The middle-most value is between the first two '7's, so the median is (7+7)/2 = 14/2 = 7. This can be thought of as the average expected number of black socks to get based on this simulation. So that's why I consider it a fair number generator because it matches fairly closely with the theoretical expected number of black socks we should get. Again, this is all based on us replacing each sock after a selection is made.

4 0
3 years ago
Solving equations with variables on both sides <br><br><br> 7+9x=6x-2
katrin2010 [14]

Answer:

Here

Step-by-step explanation:

We move all terms to the left:

7+9x-(6x-2)=0

We get rid of parentheses

9x-6x+2+7=0

We add all the numbers together, and all the variables

3x+9=0

We move all terms containing x to the left, all other terms to the right

3x=-9

x=-9/3

x=-3

3 0
3 years ago
Read 2 more answers
Eric surveys students at his school and finds that 80% have a pet. He wants to estimate the probability that, if he randomly sel
NNADVOKAT [17]
Yes that is correct what is the question
7 0
3 years ago
Write 37/100 as a percentage.
insens350 [35]

Answer:

37%

Step-by-step explanation:

37% equal 37 of a whole 100 is a whole

7 0
3 years ago
Read 2 more answers
Tunde's cookie shop is having a sale. Marcos
ELEN [110]

Answer:

Each cookie costs $1.30

Step-by-step explanation:

7x+2=11.10

Subtract 2 from both sides

7x=9.10

Divide both sides by 7

x=1.30

6 0
3 years ago
Other questions:
  • a small jet can fly 1,435 miles in 5 hours with a tailwind but only 1,215 miles in 5 hours into a headwind. find the speed of th
    9·1 answer
  • How do you find out the answer
    14·1 answer
  • An object that weighs 150 pounds on earth weighs only 56.55 pounds on Mars.The same object weighs only 24.9 pounds on the moon.
    6·1 answer
  • Plz help me find the answers plz i love y<br>u guys so so much??<br><img src="https://tex.z-dn.net/?f=20%20%5Cdiv%202" id="TexFo
    10·1 answer
  • What is the measure of angle 2
    8·1 answer
  • Mercedes would like to have an average of 88 in her math class. There are five assignments with the following grades : 85, 100,
    5·1 answer
  • Oliver needs to save at least $1500 to buy a computer. He has already saved $650. How much more does he need to save? Write
    8·1 answer
  • HELP ME PLEASE ANYONE FOR 20 POINTS
    11·2 answers
  • Helppppp me pleaseeee !
    14·2 answers
  • In quadrilateral ABCD, m∢A = 80, m∢B = 2x, m∢C = x, and m∢D=4x. Find x.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!