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
Sveta_85 [38]
3 years ago
7

Y varies directly with x, and y = 15 when x = 3. What is the value of x when y = 4?

Mathematics
2 answers:
TiliK225 [7]3 years ago
8 0
When x = 3 , y = 15 , divide both by 3.
When x= 1 , y = 5. Now multiply both by 4/5
When x = 4/5 , y=4
Mnenie [13.5K]3 years ago
7 0
Y varies directly with x so use
y/x

so when y=15 and x=3

substitute =15/3

when y=4 use y/x again so 4/x (you do not know the x)

15        4
---   *   ---
3          x

cross multiply
15x=12
isolate x by dividing 15 on both sides
get x=12/15

You might be interested in
What is 2 5/12 -(-2 1/6) Express the answer in simplest form.
VladimirAG [237]
Answer:
= 29/12 − -13/6

<span>= ((29 × 6) − (-13 × 12)) / (12 × 6) </span>

= (174 - -156) / 72

= 330/72

= 55/12

<span>= 4 7/12</span>
3 0
3 years ago
. You got 46 out of 65 questions right on your exam. What's your grade?
larisa86 [58]

Answer:

about like 8 /10

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
3z + 2 + (-52) + 6<br> Help !!!
Norma-Jean [14]

Answer:

3z-44

Step-by-step explanation:

All you have to do is to simplify the numbers. 2 + 6 - 52 = -44.

8 0
3 years ago
The consecutive angles of a parallelogram measure (x+30) and 4x°. What is the measure of the smallest
Sophie [7]

Answer:

60

Step-by-step explanation:

180=(x+30)+(4x)

Ok, combine like terms. That'll give you

180=5x+30.

Now solve for x. X is going to equal 30.

Then substitute 30 for x in the angles. One angle will be 60 and the other will be 120.

60 is smaller than 120 so that's your answer.

6 0
3 years ago
Pls help I am suffering​
Fed [463]

Answer:

line l: x = -1

line m: x = 6

line n: y = 4

line p: y = -2

Step-by-step explanation:

All of these lines are parallel to either to y or x axis, so the slope is either zero or undefined. This means all you have to do is set x or y equal to the x intercept or y intercept. For lines that go vertically, they always have the same x coordinate and any y coordinate you put in will make a point that is on the line. The same thing with the horizontal lines, except they all have the same y coordinate and any x coordinate will make a point that is on that line.

All you have to do is set x or y, depending on which way the line is going, equal to the point is goes through on the axis it travels through, no need to worry about slope or y = mx + b.

6 0
2 years ago
Read 2 more answers
Other questions:
  • 1.
    5·2 answers
  • Thirteen less than six times a number is equal to 11 more than four times the number
    6·1 answer
  • What numbers is 90 divisble by
    10·2 answers
  • A boy 1.5 m tall can just see the sun over a wall 71.5 m high which is
    7·1 answer
  • Two lines intersect in more than one point<br><br> always<br> sometimes<br> never
    15·1 answer
  • Can someone help me pls ty!
    14·2 answers
  • 78.9-55.779=<br> Adding and subtracting décima
    13·1 answer
  • 6. Which of the following will NOT produce more
    8·1 answer
  • Could someone pretty please help me on this. I need explanation.
    13·1 answer
  • The solution to the following system of linear equations lies in which quadrant?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!