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
svet-max [94.6K]
3 years ago
9

Write the following proportion using colons. 7 is to 21 as 3 is to 9.

Mathematics
2 answers:
Lubov Fominskaja [6]3 years ago
7 0
The answer is 7:21 = 3:9.
Ksenya-84 [330]3 years ago
4 0

Answer:

Option A.

Step-by-step explanation:

There are two fraction given in this question and we have to write the proportion using colon.

Visually fractions \frac{7}{21} and \frac{3}{9} are different but when we simplify these fractions we get the actual relation between them.

We simplify \frac{7}{21} first.

By dividing from 7 in the numerator and denominator we get

\frac{\frac{7}{7}}{\frac{21}{7}}=\frac{1}{3}

similarly we simplify the fraction \frac{3}{9}

By dividing numerator and denominator by 3

\frac{\frac{3}{3} }{\frac{9}{3} }=\frac{1}{3}

Now we can say that both the fractions are equal.

\frac{7}{21}=\frac{3}{9}=\frac{1}{3}

So the ratio will be 7 : 21 = 3 : 9

Option A. will be the answer.

You might be interested in
Jon makes a map of his neighborhood for a presentation. The scale of his map is 1inch:250 feet, How many feet do 6.5 inches repr
anygoal [31]
B 1625

250×6.5 equals B
3 0
3 years ago
–4(5² – 3) +6² I need help solving that​
Marat540 [252]

Answer:

-52

Have a great day! Brainliest?

4 0
3 years ago
Read 2 more answers
(-16,20),(-6,-15) what’s the slope
Sonbull [250]

Answer:

-3.5

Step-by-step explanation:

To find the slope we use

m = (y2-y1)/(x2-x1)

   = (-15-20)/(-6 - -16)

   =(-15-20)/(-6+16)

   -35/10

   = -3.5

5 0
3 years ago
Find the length of the missing side х<br> 10.6<br> 8.6
Yanka [14]

Answer:

13.65

Step-by-step explanation:

5 0
3 years ago
Easy Question! 5pts + branliest for the correct answer!
Advocard [28]

Answer:

29

Step-by-step explanation:

For the two digit numbers it has to end in a zero or five and be greater than 9 and below 100.

There are 18 multiples of 5 that are 2 digit

For multiples of 7... it's easier to write it out because the total number will will less than 20.

There are 13 multiples of 7 that are 2 digits

Now you have to subtract the multiples of 7 that end in a 0 or 5

That give you 11 multiples

Add 11 and 18 to get 29

5 0
3 years ago
Read 2 more answers
Other questions:
  • If x/y + y/x = -1 , ( x unequal y, y unequal 0) then the value of x^2 - y^2 is?
    10·2 answers
  • 4. Solve each equation by inspection. Explain your thinking. a) 3n=33 b) 9+w=10 c) r-15=30 d) 2y+3=11
    8·1 answer
  • Solve the equation.<br> F - 8/9 = 5/8<br> f = ?
    9·2 answers
  • Albert needs $133 to buy a new hard drive. He earns $4.75 for each car he washes. If he spends $19 in supplies, write and solve
    11·1 answer
  • Evaluate 3z+6 when z=4​
    8·1 answer
  • Maurice's family put a pool into their backyard. It is rectangular in shape and its dimension are 20 feet by 10 feet by 10 feet.
    6·1 answer
  • Pick a number from 1 to 10
    12·2 answers
  • Pecans are on sale at 0.95 per pound. Harold buys 0.6 puonds of pecans. How many will the pecans cost.
    11·1 answer
  • -2 (x + 3) need help with distributive property -_-
    15·1 answer
  • Which of following questions are statistical questions?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!