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
pshichka [43]
3 years ago
8

What is the value of z for the equation 1/4z = –7/8 + 1/8z? –3 –7 3 7

Mathematics
1 answer:
DaniilM [7]3 years ago
6 0
The first step for solving this equation is to determine the defined range.
\frac{1}{4z} = - \frac{7}{8} +  \frac{1}{8z}, z ≠ 0
Move the expression\frac{1}{8z} to the left side of the equation and change its sign.
\frac{1}{4z} - \frac{1}{8z} = - \frac{7}{8}
Now we need to write all numerators above the least common denominator of 8z. This will change the equation to the following:
\frac{1}{8z} = - \frac{7}{8}
Simplify the equation using cross multiplication.
8 = -56z
Switch the sides of the equation.
-56z = 8
Divide both sides of the equation by -56.
z =  -\frac{1}{7}, z ≠ 0
Lastly,, check if the solution is in the defined range to get your final answer.
z = -\frac{1}{7}
Let me know if you have any further questions.
:)
You might be interested in
Suppose we take two different random samples from the same population of test scores. The population mean and standard deviation
Leto [7]

Answer:

The 95% confidence interval obtained with a sample size of 64 will give greater precision.            

Step-by-step explanation:

We are given the following in the question:

A 95% confidence interval is calculated with the following sample sizes

n_1 = 25\\n_2 = 64

The population mean and standard deviation are unknown.

Effect of sample size on confidence interval:

  • As the sample size increases the margin of error decreases.
  • As the margin of error decreases the width of the confidence level decreases.
  • Thus, with increased sample size the width of confidence level decreases.

If we want a confidence interval with greater precision that is smaller width, we have to choose the higher sample size.

Thus, the 95% confidence interval obtained with a sample size of 64 will give greater precision.

3 0
3 years ago
A grinding stone completes 175 revolutions before coming to a stop. How many radians did the stone complete
alexandr402 [8]

Answer:

175 * 2 * \pi

350\pi radians

Step-by-step explanation:

8 0
3 years ago
2500 in scientific notation
barxatty [35]
You move the decimal to the left three places, so it is 10³

2.5 * 10³

Hope this helped :)
8 0
3 years ago
I Need Help With this FLVS problem can anyone help me and my DBA is tomorrow
elixir [45]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
2<img src="https://tex.z-dn.net/?f=%20%203%5E%28x%2B7%29%20%3D%20%209%5E%28x-1%29" id="TexFormula1" title=" 3^(x+7) = 9^(x-1)"
DaniilM [7]
3(x + 7) = 9(x - 1)
3(x) + 3(7) = 9(x) - 9(1)
  3x + 21 = 9x - 9
<u>- 3x          - 3x     </u>
          21 = 3x - 9
        <u>+ 9         + 9</u>
         <u>30</u> = <u>3x</u>
          3      3
         10 = x
4 0
3 years ago
Other questions:
  • ]2) 3(4x + 3) + 4 = 31<br> what does x equal in the equation
    10·1 answer
  • The lines shown below are parallel. If the green line has a slope of -3/7, what is the slope of the red line?
    15·2 answers
  • 9 divided by blank equals 5/9 what is the blank?
    5·1 answer
  • Is the relation a function? {(14, 15), (5, 7), (3, 10), (11, 1), (5, 8)}
    13·1 answer
  • (23.01) In a randomized comparative experiment on the effect of dietary calcium on blood pressure, researchers divided 58 health
    5·1 answer
  • Leonard brought 4 liters of orange juice. How many mililiters of juice does he have?
    11·1 answer
  • Multiply the fractions together. B Divide 45 5 4 by 13 3 1 . C Multiply the numerators together, and multiply the denominators t
    15·1 answer
  • What two numbers add up to -18 and multiply to 45? (Don’t need to show work)
    13·2 answers
  • Please awnser this 8÷4400​
    5·2 answers
  • Guys pls help with all the steps ​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!