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
Ksenya-84 [330]
3 years ago
10

How to answer this question??? thanks

Mathematics
1 answer:
vesna_86 [32]3 years ago
7 0
\dfrac{2m}{5}+3=7(4m-3)\ \ \ \ |use\ distributive\ property:a(b-c)=ab-ac\\\\\dfrac{2m}{5}+3=28m-21\ \ \ \ \ |multiply\ both\ sides\ by\ 5\\\\2m+15=140m-105\ \ \ \ |subtract\ 140m\ from\ both\ sides\\\\-138m+15=-105\ \ \ \ |subtract\ 15\ from\ both\ sides\\\\-138m=-120\ \ \ \ |divide\ both\ sides\ by\ (-138)\\\\m=\dfrac{120:6}{138:6}\\\\\boxed{m=\frac{20}{23}}
You might be interested in
Solve the equation: n + 32 = 60.
Digiron [165]
N + 32 = 60

First, so basically, we are trying to find a number that can add up with 32 to equal 60. The easiest route to solve this is to simply take 32 and subtract it from 60.
n = 60 - 32

Second, once we subtract, we will be given the answer and know what 'n' is. Subtract 60 - 32 to get your answer. 60 - 32 = 28
n = 28

Third, know that we know that the answer to 'n' is 28, we can check it by adding 28 + 32. Your answer should be 60, and 28 is the correct answer.

Answer: \fbox {n = 28}
4 0
3 years ago
Read 2 more answers
The sum of 5 and 8 times a number is 45 Which of the following equations below can be used to find the unknown number
Ulleksa [173]
The answer to this is C
5 0
2 years ago
Given sin(−θ)=−1/6 and tanθ=−√35/35 What is the value of cosθ?
murzikaleks [220]

Answer:

cos(\theta)=-\frac{\sqrt{35} }{6}

Step-by-step explanation:

Recall the negative angle identity for the sine function:

sin(- \theta)=-sin(\theta)  

Then, we can find the value of  sin(\theta):

sin(\theta)=-sin(-\theta)\\sin(\theta) =-(-\frac{1}{6} )\\sin(\theta)= \frac{1}{6}

Now recall the definition of the tangent function:

tan(\theta)=\frac{sin(\theta)}{cos(\theta)}

Therefore, now that we know the value of sin(\theta), we can solve in this equation for cos(\theta)

tan(\theta)=\frac{sin(\theta)}{cos(\theta)}\\-\frac{\sqrt{35} }{35} =\frac{1/6}{cos(\theta)} \\cos(\theta)=-\frac{\frac{1}{6} }{\frac{\sqrt{35} }{35} } \\cos(\theta)=-\frac{35}{6\,\sqrt{35} } \\cos(\theta)=-\frac{\sqrt{35} }{6}

5 0
2 years ago
A college class with 30 sophomores, 18 juniors, and 12 seniors is
pychu [463]
The greatest number of groups that can be formed is 10
8 0
3 years ago
F (×)=-4×^2-3 g (×)-3×-3 Find f (4)and g(5)
Elena-2011 [213]
F(4)= -64-3=-69 g(5)= -15-3=-18
3 0
2 years ago
Other questions:
  • two unidentified flying discs are detected by a receiver, the angle of elevation from the receiver to each disc is 38.48 degrees
    13·1 answer
  • What is the sum of the given polynomials in standard form?
    8·1 answer
  • Denise has a stool with a circle seat on top. The diameter of the seat is 14inches, and she wants to know the area of the top in
    8·1 answer
  • 49953 rounded to the nearest hundred
    15·2 answers
  • Find the value of x .. assume that segments that appear to be tangent are tangent .
    9·1 answer
  • Which best describes this triangle?
    11·1 answer
  • Chris has finished 30% of an art project that has taken him a total of 9 hours so far. If he continues to work at the same rate,
    7·1 answer
  • Which of the following matrices has the order of 3 x 6?
    5·1 answer
  • The solution of a A + B > 12 is a > -3. What is the value of b
    10·1 answer
  • What's the slope intercept equation of slope-4 y intercept 0,11​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!