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
Elis [28]
3 years ago
9

The variable z is directly proportional to x, and inversely proportional to y. When x is 6 and y is 6, z has the value 12.

Mathematics
1 answer:
dalvyx [7]3 years ago
3 0

z is directly proportional to x: z = kx.

If z is directly proportional to x and inversely proportional to y, then z = Kx/y.

When x= 6 and y = 6, z is 12. Find the constant of proportionality, K:

12 = K(6/6), or K = 12

Then, in general, z = 12x/y.

What is z when x=13 and y=10? z = 12(13)/(10) = 15.6 (answer)

You might be interested in
Calculate dy/dxif y = 4x3 + 3x2 + 2.
Elena-2011 [213]
The answer is
 <span>A. 12x2 + 6x

solution 
</span><span>y = 4x3 + 3x2 + 2
</span><span>y'(x) = 12x^2 + 6x


</span>
7 0
3 years ago
Express tan B as a fraction in simplest form.
liberstina [14]

Answer:

4/3

Step-by-step explanation:

Tan B is defined as the opposite side divided by the adjacent side.  5 is the hypotenuse, 4 is the opposite side of angle B, and 3 is the adjacent side of angle B

6 0
3 years ago
The price of an item has been reduced by $2.18. The new sale price is $36.64. What was the original price?
Ilia_Sergeevich [38]

Hello :D

To find out the original price you have to do:

$36.64 + $2.18 = $38.82

Original price = $38.82

4 0
2 years ago
Read 2 more answers
The distance between points (X7, Yı) and (4, 8) is the square root of (x7 - 8)2 +
serious [3.7K]

Answer:

B. False

Step-by-step explanation:

Given

Points: (x_7 - y_i),(4,8)

Required

Is the distance between them \sqrt{(x_7 - 8)^2 + (y_1 - 4)^2}

Given that there are two points, the distance between them is calculated using

Distance = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

In this case;

(x_1,y_1)= (x_7 - y_i)\\(x_2,y_2) =(4,8)

Substitute these in the given formula

Distance = \sqrt{(4- x_7)^2 + (8 - y_1)^2}

Comparing this with the given formula, both are not the same;

Hence, the formula is false and the correct formula is of the form \sqrt{(4- x_7)^2 + (8 - y_1)^2}

6 0
3 years ago
Write 3.7 as a mixed number explain
frosja888 [35]
3 and 7/10 or 37/10
Just look up mixed numbers
You must convert it into a fraction so it will be a mixed number
.7 is 7/10 of 1
3 0
2 years ago
Read 2 more answers
Other questions:
  • A circle has a diameter of 28 ft. What is the circumference?
    13·1 answer
  • Please help me I need it.
    10·1 answer
  • Dilate line f by a scale factor of 2 with the center of dilation at the origin to create line f. Where are points A' and B' loca
    5·1 answer
  • Math Simplify the expression ​
    14·1 answer
  • Hey can anybody help me with this question please
    14·2 answers
  • A painter has a 24 foot ladder that he is using to paint a house. For safety reasons, the ladder must be placed at least 8 feet
    10·1 answer
  • Write y=(-3/4)x+3 in standard form using integers
    7·1 answer
  • Please help!!!!! <br> Urgent!!! <br><br> I’m so confused :(( <br><br><br> *picture provided*
    7·1 answer
  • mondays high temperature was 6 degrees celcius. the low temperture was -3 degrees celcius. what was the difference between the h
    5·2 answers
  • Greg has a piece of rope 18 ft long. He wants to cut it into two pieces so that the longer piece is 2 ft less than 3 times the l
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!