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
mamaluj [8]
2 years ago
14

20value." id="TexFormula1" title="\frac{x}{12} = \frac{3}{9} Use a proportion. Find missing value." alt="\frac{x}{12} = \frac{3}{9} Use a proportion. Find missing value." align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Ymorist [56]2 years ago
7 0

Answer:

x=4

Step-by-step explanation:

Cross-multiply to simplify:

\frac{x}{12}=\frac{3}{9},\\9x=12\cdot 3,\\9x=36

Divide both sides by 4 to isolate x:

x=\frac{36}{9}=\boxed{4}

You might be interested in
PLS HELP! A bicycle tire has a radius of 13.5 inches. How far will the bicycle travel in 100 rotations of the tiree?
nydimaria [60]

Answer:

8482.3 inches

Step-by-step explanation:

You have to find the circumference of the wheel.

If the radius is 13.5, the diameter is 27 (13.5 x 2).

C = πd

C = π × 27

C = 27π

100 rotations means 27π × 100 = 2700π

= 8482.3 inches

8 0
2 years ago
Read 2 more answers
Two airplanes leave an airport at the same time, flying in the same direction. One plane is flying at twice the speed of the oth
olasank [31]

Answer:

One plane has a speed of 450 km/h and the other has a speed of 900 km/h.

Step-by-step explanation:

I am going to say that:

The speed of the first plane is x.

The speed of the second plane is y.

One plane is flying at twice the speed of the other.

I will say that y = 2x. We could also say that x = 2y.

Two airplanes leave an airport at the same time, flying in the same direction

They fly in the same direction, so their relative speed(difference) at the end of each hour is y - x = 2x - x = x.

If after 4 hours they are 1800 km apart, find the speed of each plane

After 1 hour, they will be x km apart. After 4, 1800. So

1 hour - x km apart

4 hours - 1800 km apart

4x = 1800

x = 1800/4

x = 450

2x = 2*450 = 900

One plane has a speed of 450 km/h and the other has a speed of 900 km/h.

3 0
3 years ago
9) Farmer Joe has lots of rabbits and lots of predators on his farm. Only 3 out of every 10 rabbits live
qaws [65]
<h2>Answer: 90 rabbits</h2>

<em></em>

<h3><em>Step-by-step explanation:</em></h3>

<em>you will need 10 for every 3 rabbits so if you count in tens and three's </em>

<em>3=10</em>

<em>6=20</em>

<em>9=30</em>

<em>and so on..</em>

<em>when you get to 27 you'll be at 90 </em>

<em>27=90 </em>

<em>hope u understand :></em>

8 0
2 years ago
You can buy 4 apples at stop and shop for 0.96. you can buy 6 of the same apples at path mark for $1.50 which store has the bett
monitta
Stop and Shop has the better deal, as it is 0.24 cents for each apple if you divide 0.96 by 4, while Path Mark is 0.25 cents.
4 0
3 years ago
Esma has a box that is 20 cm wide 10 cm high, and 10 cm deep she wants to fill the box with packages that are 5 cm wide 2 cm hig
anastassius [24]

Answer:

Esma can fit 3 packages in the box because 20+10+10=30 and 5+2+2=9 so if you add up 9 three times you get 27 and that is the closest number you can get before going over.

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • What is most likely the length of a telephone book
    9·1 answer
  • In what situation can you use multiplication to find equivalent fractions to a given fraction
    5·1 answer
  • Which graph shows all the values that satisfy Two-ninths x + 3 greater-than 4 and five-ninths
    14·2 answers
  • Ashley has a box of donuts to distribute among her colleagues. there are eight chocolate donuts, twelve glazed donuts, ten jelly
    9·1 answer
  • What is the missing value?
    15·1 answer
  • FACTORIZAR LOS SIGUIENTES POLINOMIOS.<br><br> a2 - 81 =
    10·1 answer
  • D o I p l a y M i n e c r a f t o r, F o r t n i t e?
    7·2 answers
  • Why do planet need a core dont ask for brainlist i dont know some guy tried to but could not help me
    5·1 answer
  • Look at the picturee
    8·2 answers
  • Find the value of x.<br><br>m&lt;2= x + 85​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!