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
ivann1987 [24]
3 years ago
9

Solve for a. 7a-2b = 5a+b

Mathematics
2 answers:
andrew11 [14]3 years ago
8 0

Answer:  The required value of a is \dfrac{3}{2}b.

Step-by-step explanation:  We are given to solve the following equation for variable a :

7a-2b=5a+b~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)

To solve the above equation for a, we need to take terms involving a on one side of equality that that involving b on the other side.

So, from equation (i), we get

7a-2b=5a+b\\\\\Rightarrow 7a-5a=b+2b\\\\\Rightarrow 2a=3b\\\\\Rightarrow a=\dfrac{3}{2}b.

Thus, the required value of a is \dfrac{3}{2}b.

nordsb [41]3 years ago
7 0
7a-2b = 5a + b
2a=3b
a = 3b/2
You might be interested in
Will up-vote!
klasskru [66]
19.2 * 10⁸ minutes.

60 minutes = 1 hour.

19.2 * 10⁸ minutes =  (19.2 * 10⁸) / 60  hour
                 
                              = 32 000 000 =   3.2 * 10⁷ hours

= <span>D. 3.200 × 10^7 ​h​</span>
3 0
3 years ago
Solve for x: 3/4x+5/8=4x
kompoz [17]
So, you have 3/4x + 5/8 = 4x. We can do this in two ways. Since fractions are harder to deal with, we can turn the fractions into whole numbers.

First we need to find the LCD (Least Common Denominator) between 4 and 8, which is 8. So multiply the 3/4x by 2/2, which gives you an equivalent fraction of 6/8x.

So now we have 6/8x + 5/8 = 4x. Now multiply both sides by 8, to get rid of the denominators of the fractions. That gives us 6x + 5 = 32x. Now use the subtraction property of equality to subtract 6x from both sides giving us 5 = 26x. 

Now you can use the division property of equality to divide 26 on both sides, which gives us x = 5/26.

Hope this helps. :D Feel free to ask any other questions, and if you have any questions about my explanation, don't hesitate to ask.
6 0
3 years ago
What kind of number is e? <br><br> a.) integer<br> b.) rational <br> c.) natural <br> d.) irrational
Oliga [24]

Answer:

c.natural

Step-by-step explanation:

The number e , sometimes called the natural number, or Euler's number, is an important mathematical constant approximately equal to 2.71828.

7 0
3 years ago
Read 2 more answers
Can someone show me how to do this?
andriy [413]
3/4 ( (-50+2)/5)
= 3/4 ( -48/5)
= 3/4 * -48/5
= -36/5
6 0
3 years ago
Only number 8 and show the work please?
bogdanovich [222]
Uh thats weird no make sense
6 0
3 years ago
Other questions:
  • What is the value of X? Make sure to show all of your work!
    7·1 answer
  • a. A game requires players to roll two number cubes to move the game pieces. The faces of the cubes are labeled 1 through 6. Wha
    13·1 answer
  • Can there technically be a square root of 0 in mathematics or is that not allowed?
    15·2 answers
  • The weight of a rock sample is measured to be 2.5 pounds. What is the percent of error in the measurement?
    14·1 answer
  • Which of these statements is true for f(x)=3•(9)^x
    5·2 answers
  • A trader earns a profit of $60000 in 1998 and a profit of $75000 in 2003. Find the average rate of change of profit.
    9·1 answer
  • Find the derivative of f(x) = 2x2 + 7x at -3. That is, find f'(-3).
    6·1 answer
  • A car traveling at 10 m/s starts to slow down. It comes to a complete stop
    12·1 answer
  • 5 2/7+1 2/7 as a mixed number in simplest form
    14·2 answers
  • Please look at the picture and answer it. Thank you
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!