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
frez [133]
4 years ago
8

3/7 =9/x solve the following proportions ( they are fractions) thanks!

Mathematics
1 answer:
tresset_1 [31]4 years ago
6 0
3/7 = 9/x
cross multiply because thats how u solve proportions
(3)(x) = (7)(9)
3x = 63
x = 63/3
x = 21

and if u will notice : 3/7 and 9/21 ....9/21 reduces to 3/7....so these are equivalent fractions...because proportions are nothing but equivalent fractions
You might be interested in
In a survey of 100 people, 10 preferred onions on their hot dogs. What percent preferred onions?
Aleks [24]
1/10 if you divide 10 by 100 it would be 1/10
4 0
3 years ago
PLEASE ANSWER! (I’m a noob with this app, so all I know is that whoever answers a Q correctly will get brainliest)
klasskru [66]

Answer: 2 Exermintal proobilty

Step-by-step explanation:

it is nit theritcal because she actualy has the beans.

5 0
3 years ago
Calculator
Sedaia [141]

Check the picture below.

so let's find the lengths of those two sides in red, since are the length and width of the rectangle.

\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{-6}~,~\stackrel{y_1}{3})\qquad (\stackrel{x_2}{-3}~,~\stackrel{y_2}{6})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ d = \sqrt{[-3-(-6)]^2+[6-3]^2}\implies d=\sqrt{(-3+6)^2+(6-3)^2} \\\\\\ d=\sqrt{9+9}\implies \boxed{d=\sqrt{18}} \\\\[-0.35em] ~\dotfill

\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{-6}~,~\stackrel{y_1}{3})\qquad (\stackrel{x_2}{-2}~,~\stackrel{y_2}{-1})~\hfill d=\sqrt{[-2-(-6)]^2+[-1-3]^2} \\\\\\ d=\sqrt{(-2+6)^2+(-1-3)^2}\implies d=\sqrt{16+16}\implies \boxed{d=\sqrt{32}} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{area of the rectangle}}{(\sqrt{18})(\sqrt{32})}\implies \sqrt{18\cdot 32}\implies \sqrt{576}\implies 24

7 0
4 years ago
At a 3​-mile ​cross-country race, an athlete runs 2 miles at 6 mph and 1 mile at 12 mph. What is the​ athlete's average​ speed?
Tom [10]

Answer: the average speed is 7.5 mph or at least im pretty sure

Step-by-step explanation:

This is because if you make the 2 miles at 6 mph to 1 mile at 3 mph then you get 1 mile at 3mph and 1 mile at 12 mph. now that you have the unit rates of these you can add them. 1 + 1 = 2 miles and 3 + 12 = 15 mph now divide this by two and you get 7.5 mph per mile.

I hope this helped, if it did could you give me a good rating? lol

8 0
3 years ago
You need to buy 5 notebooks for your classes at school.Each notebook costs $2.79. What is the total cost before tax?
lesya692 [45]

Answer:

$13.95

Step-by-step explanation:

You need to multiply the 5 notebooks with the costs of each notebook, which gives you the total costs before tax.

7 0
3 years ago
Other questions:
  • Is y=9x-8 a function
    10·2 answers
  • Can you help me with the problem?
    13·1 answer
  • Jorryn says that 10 less than 3 times his age is equal to 11 years old. How old is
    7·2 answers
  • Two different radioactive isotopes decay to 10% of their respective original amounts. Isotope A does this in 33 days, while isot
    12·2 answers
  • The domain (input values) of the sine function is:
    5·2 answers
  • The records of four baseball teams are shown below. Which team had the greatest percent of wins?
    14·2 answers
  • Sorry for all the questions!!
    15·1 answer
  • Plz help me an expert help me
    15·1 answer
  • Plz help i really need it<br><br> n/5 - 3 = -6 <br> A) -20 <br> B) -2 <br> C) 15 <br> D) -15
    15·2 answers
  • PLEASE HELPPPP! i already asked the question but no one answered.. and my test is due in 20 minutes IM BEGGIN for the map above,
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!