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
ss7ja [257]
3 years ago
6

Q2) If z is directly proportional to x and z = 12 when x = 3, find the value of x when z = 18.

Mathematics
2 answers:
LenKa [72]3 years ago
4 0

Answer:

4.5

Step-by-step explanation:

→ Set up the direct proportion equation

z = kx

→ Substitute in the values

12 = 3k

→ Divide both sides by 3 to isolate k

4 = k

→ Substitute the value of k back into the original direct proportion equation

z = 4x

→ Substitute the value of z in

18 = 4x

→ Divide both sides by 4 to isolate x

4.5 = x

stepladder [879]3 years ago
4 0

Answer:

4.5

Step-by-step explanation:

You might be interested in
Will mark brainliest!!
wlad13 [49]
<span>Solve the system

9x = 27-9y
20x=71-9y

Let's use the "elimination through addition/subtraction method.
Multiply the first equation by -1 so as to obtain +9y:

-9x = -27 + 9y
</span><span>20x=  71-   9y
--------------------

Add these 2 equations together:

</span>-9x = -27 + 9y
20x=  71-   9y
--------------------
<span> 11x = 44

Solve this for x:  x = 44/11 = 4.

Now find y by subst. 4 for x in either of the original equations.

Using the second equation:    </span><span> 

</span>20x=71-9y
20(4) = 71 - 9y
80-71 = -9y
9 = -9y.  Then y = -1.

The solution set is (4,-1).
7 0
3 years ago
The following graph details the number of performances of plays a Shakespearean acting company has performed over the past five
iogann1982 [59]
I believe thE answer is B.
3 0
3 years ago
Read 2 more answers
The slope of a line in a blueprint must be . A line is drawn that contains the points 5/6 &lt; | m | &lt;7/4. Determine if the l
padilas [110]
Sorry, a bit late but i took it and it was A.

4 0
2 years ago
Anyone help with my homework plz?
iren2701 [21]
Hi!

This is definitely a trapezoid, as it has two equal sides and two inequal sides. It's not a parallelogram, because two sides eventually intersect. It is a quadrilateral, because it has four sides.

None of the others apply here.

If you found this especially helpful, I'd appreciate if you'd vote me Brainliest for your answer. I want to be able to assist more users one-on-one, as well as to move up in rank! :)
3 0
2 years ago
A mathematical phrase represented by numbers, variables, and operations is a(n)
Andre45 [30]

Answer:

Expression

Step-by-step explanation:

Expressions use numbers, variables, and operations to form a mathematical calculation.

Equations are similar except they use equal signs, so that makes them different than expressions.

If this answer is correct, please make me Brainliest!

7 0
3 years ago
Other questions:
  • Jason is drawing a blueprint of his bedroom for his new house. Using a scale of 1 inch = 3.5 feet, he drew his bedroom 3 inches
    6·1 answer
  • Please someone help
    15·2 answers
  • Which equation has a slope of 1/2 and passes through the point (1.2)?
    13·1 answer
  • This equation is an equation that expresses a relationship among variables. Formulas are examples of this.
    15·2 answers
  • Sam has
    13·2 answers
  • How do I Factor 42p⁴+9p³q²-18p²q²​
    6·1 answer
  • Ayo can some1 pls help
    14·1 answer
  • B
    11·1 answer
  • In the following diagram BC is parallel to DE. What is the mesure of x?
    9·2 answers
  • What is the twentieth term in the sequence 23, 43, 63, 83 …?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!