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
Alenkasestr [34]
3 years ago
12

Giải phương trình x/30-x/40=5/4

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
3 0

Answer:

x=150

Step-by-step explanation:

x/30-x/40=5/4

or, (4x-3x)/120=5/4

or, x/120=5/4

or, x=600/4

or, x=150

You might be interested in
What is the formula for a proportional relationship
BigorU [14]

Answer:

y=kx

Step-by-step explanation:

6 0
3 years ago
how can e=1/2mv^2 when 1/2 moved to the side of e become 2e? This is because you are trying to find the formula when solved for
lisov135 [29]

e = 1/2 mv ^2

Times 2 for both sides.

2e = mv^2

And this is because you are trying to find the formula when solved for v.

And I can help you find that formula which is:

mv^2 = 2e

v^2 = 2e/m

v = √(2e/m)

7 0
3 years ago
I am part of a whole. I am greater than three fourths but less than nine tenths. I am a decimal with a 3 in its hundredth place.
Natali5045456 [20]
Lets get started :)

Given is that the value is greater than three fourths { \frac{3}{4} = 0.75 }
                      the value is less than nine tenths { \frac{9}{10} = 0.9 }
              and the value has 3 in its hundredth place

Fractions between \frac{3}{4} and \frac{9}{10} are 
\frac{4}{5}=0.8 , \frac{5}{6} = 0.8333 , \frac{7}{8} = 0.875 , \frac{8}{9} = 0.8888

Among these fractions, the value which has 3 in its hundredth place is \frac{5}{6}

\frac{3}{4}\ \textless \ \frac{5}{6} \ \textless \ \frac{9}{10}

4 0
3 years ago
Read 2 more answers
If Benito earns $187.50 for 12.5 hours of work, how many hours must he work to earn $465.00?
EastWind [94]

divide 187.50 by 12.5 to find hourly rate

187.50/12.50 = 15 dollars per hour

now divide 465 by 15 for number of hours

465/15 = 31 hours

 double check by multiplying 31 by 15 ( 31 x 15 = 465)

6 0
4 years ago
Read 2 more answers
Check all of the numbers that are potential rational roots of f(x) = x4 – 2x3 + 5x2 – 7x + 9.
Galina-37 [17]
The answer is a,b, and c. 1,3,9
4 0
4 years ago
Read 2 more answers
Other questions:
  • Length of a rectangle is 3/4 yard. The width is 2/3 of its length. What is the area of the rectangle?
    6·1 answer
  • 3. Which of the following is a composite number? A. 63 B. 0 C. 19 D. 1
    13·2 answers
  • An environmental advocacy group is interested in the perceptions of farmers about global climate change. Specifically, they wish
    6·2 answers
  • Write an equation that models the scenario if x represents the number of nights and y represents the total cost of the trip. (th
    8·1 answer
  • What is the probability of rolling a sum of 4 when rolling two six-sided number cubes?
    13·1 answer
  • Need help asap with 1 math question, please help. Offering double the points!
    7·2 answers
  • Please please help me!!!!
    12·1 answer
  • Need help only on these two problems please
    13·2 answers
  • What is the Domain of the function shown on the graph
    7·1 answer
  • Can you help me find the length of YB
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!