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
Kay [80]
3 years ago
9

Easy variable question pls help

Mathematics
1 answer:
svet-max [94.6K]3 years ago
7 0

Answer:

z = -4 1/2

Step-by-step explanation:

1. First change the mixed fractions to improper fractions so it's easier

\frac{16}{5\\}/(z-\frac{1}{2}) = \frac{8}{3}/(z+\frac{1}{3})

2. Simplify

\frac{32}{5(2z-1)} = \frac{8}{3z+1}

3. Cross multiply

32(3z+1) = 5(2z-1) * 8

4. Simplify again (distributive property)

32(3z+1) = 40(2z-1)

5. Distributive property

32(3z+1) -> 96z+32  

40(2z-1) -> 80z-40

96z+32=80z-40

6. Subtract 32 from both sides

96z+32-32 = 80z-40-32

7. Simplify

96z = 80z-72

8. Subtract 80 from both sides

96z-80z=80z-72-80z

9. Simplify

16z=-72

10. Divide both sides by 16

\frac{16z}{16}=\frac{-72}{16}

11. Simplify

z=-\frac{9}{2} -> also = -4\frac{1}{2}

Sorry if it was too long but hope this helps! :)

And also try using symbolab cuz it gives step by step explanations it's really good!

You might be interested in
Solve the system by substitution.<br> y = -X<br> y = - 4x + 12
bulgar [2K]

Answer:

The answer is ( - 8, 8) in point form or in x = -8 , y= 8 in equation form.

7 0
3 years ago
Read 2 more answers
Explain how to use Pascal's Triangle to expand the binomial (3x-4y)^11
Mars2501 [29]

The solution to the binomial expression by using Pascal's triangle is:

\mathbf{=177147x^{11}-2598156x^{10}y +17321040x^9y^2-69284160x^8y^3+184757760x^7y^4}

\mathbf{-344881152x^6y^5+459841536x^5y^6-437944320x^4y^7+291962880x^3y^8}

\mathbf{-129761280x2y^9+34603008xy^{10}-4194304y^{11}}

<h3>How can we use Pascal's triangle to expand a binomial expression?</h3>

Pascal's triangle can be used to calculate the coefficients of the expansion of (a+b)ⁿ by taking the exponent (n) and adding the value of 1 to it. The coefficients will correspond with the line (n+1) of the triangle.

We can have the Pascal tree triangle expressed as follows:

                          1

               1                   1

        1                2                 1

    1          3              3               1

1      4            6                4            1

--- --- --- --- --- --- --- --- --- --- --- --- --- --- ---

From the given information:

The expansion of (3x-4y)^11 will correspond to line 11.

Using the general formula for the Pascal triangle:

\mathbf{(a+b)^n = c_oa^nb^0 + c_1 a^{n-1}b^1+c_{n-1}a^1b^{n-1}+c_na^0b^n}

The solution to the expansion of the binomial (3x-4y)^11 can be computed as:

\mathbf{=177147x^{11}-2598156x^{10}y +17321040x^9y^2-69284160x^8y^3+184757760x^7y^4}

\mathbf{-344881152x^6y^5+459841536x^5y^6-437944320x^4y^7+291962880x^3y^8}

\mathbf{-129761280x2y^9+34603008xy^{10}-4194304y^{11}}

Learn more about Pascal's triangle here:

brainly.com/question/16978014

#SPJ1

5 0
2 years ago
Eight more than twice a number is equal to ten less than five times the number. Let n represent the number. Write an equation th
solniwko [45]
The answer is 8+2n=5n-10
7 0
3 years ago
Read 2 more answers
Alex wants to buy 4 pounds of peaches.They cost $1.20 per pound.How much will Alex need to spend for the peaches?
Ivan
The correct answer $4.80
8 0
4 years ago
4.0 x 10<br> 3<br> kJ/mol<br> How many significant digits are there
salantis [7]

Answer:

2

Step-by-step explanation:

4.0 has 2 significant digits.

The zeros after a non zero number are significant.

Any non zero number is significant.

0.004 has 1 significant digit.

4000 has 4 significant digits.

In your case 4.0 × 10^3 there is an exception because it is in scientific notation. So there are 2 significant digits.

hope this makes sense.

:)

5 0
3 years ago
Other questions:
  • The scale of the model train is 1 inch to 12.5 feet. One of the cars of the model train is 7 inches long. What is the length, in
    12·1 answer
  • 48.5 is 7 percent of what number
    13·2 answers
  • Opposite numbers like 5 and -5 are the same distance away from 0 AND on opposite sides of 0.
    12·1 answer
  • 2+3 is what?<br><br><br> .<br> .<br> .<br> .<br> .<br> .<br> .<br> .<br> .<br> .<br> .<br> .
    11·2 answers
  • I WILL GIVE THE BRAINLEST AND THANKS PLZZZZ HELP MEEEEE
    15·2 answers
  • When shopping, Joe noticed the prices for the items he purchased; each pen and pencil (p) cost $0.85 and erasers (e) cost $1.15
    15·1 answer
  • What is the hcf of 12 45 and 75​
    9·1 answer
  • Determine the two z-scores that divide the area under the standard normal curve into a middle 0.874 area and two outside 0.063 a
    15·1 answer
  • Given the function f(x) = 9 - X, evaluate f (4).
    8·1 answer
  • Write degree of polynomial<br><img src="https://tex.z-dn.net/?f=%20-%20%7B5x%7D%5E%7B6%7D%20%20-%20%20%7By%7D%5E%7B3%7D%20%20%2B
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!