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
bixtya [17]
3 years ago
11

What is the solution to 3/(2x+1) = 9/3x?

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
7 0

Answer:

Solution x = - 1

Step-by-step explanation:

3 / (2x+1) = 9 / 3x

Cross multiply

3(3x) = 9(2x + 1)

Distributive property

9x = 18x + 9

Subtract 18x from both sides

-9x = 9

Divide both sides by -9

x = -1

You might be interested in
NEED ASAP <br> NO LINKS PLS <br> WILL MARK BRAINLIEST
pickupchik [31]

Answer:1.4348e-5 for dimensions and area is 160,000 sq ft. but thats only the first tree one...only one i can do without my brain giving out..good luck

Step-by-step explanation:

6 0
3 years ago
A student measured the volume of an iron nail to be 0.880 cm3. She found its mass was 6.92grams. What is the density of iron?
Natali [406]

Answs,dv

Step-by-step explanation:

8 0
2 years ago
What is the answer to Q=1/2p+15, for p​
Mazyrski [523]

Answer: Q=1/2p+15,= p=2q-30= Slope = 1.000/2.000 = 0.500

 p-intercept = -30/1 = -30.00000

 q-intercept = 30/2 = 15

Step-by-step explanation: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    p-(2*q-30)=0  

Solve   p-2q+30  = 0

we have an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  p-2q+30  = 0 and calculate its properties

Notice that when p = 0 the value of q is 15/1 so this line "cuts" the q axis at q=15.00000

 q-intercept = 30/2  =  15

When q = 0 the value of p is -30/1 Our line therefore "cuts" the p axis at p=-30.00000

 p-intercept = -30/1  = -30.00000

Slope is defined as the change in q divided by the change in p. We note that for p=0, the value of q is 15.000 and for p=2.000, the value of q is 16.000. So, for a change of 2.000 in p (The change in p is sometimes referred to as "RUN") we get a change of 16.000 - 15.000 = 1.000 in q. (The change in q is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

   Slope     =  1.000/2.000 =  0.500

7 0
3 years ago
Suppose that the regression for predicting weight (in pounds) from Height (in Select one answer inches) is given by Weight =-115
Nutka1998 [239]

Answer:

Option D)  I and II only                                    

Step-by-step explanation:

We are given the following in the question:

Regression equation:

w = -115 + 3.6h

where w is the weight in pounds and h is the height in inches.

Since the weight depends on height, height becomes the independent variable and weight becomes the dependent variable.

I. A person who is 61 inches tall will weigh 104.6 pounds

When h = 61,

w = -115 + 3.6(61) = 104.6

Thus, the given statement is true.

II. For every additional inch of height, the predicted weight will increase, on average, by 3.6 pounds.

If the height increases by 1 unit, then,

w(h+1) - w(h) = -115 + 3.6(h+1) - (-115 + 3.6(h))\\w(h+1) - w(h)  = 3.6(h+1-h)\\w(h+1) - w(h)  = 3.6

Thus, the given statement is correct.

III. The correlation between weight and height is negative.

No, the given statement is not correct as with increase in height the weight increases and with decrease in height the weight decreases.

Thus, the correct answer is

Option D)  I and II only

8 0
3 years ago
What two numbers multiply to -49 and add to +6
Zina [86]
I don’t think there is a number that does both of those, the factors of 49 are 1, 7, and 49
4 0
3 years ago
Other questions:
  • Which equation has the same unknown value as 405 ÷ 15 = ? A 405 × ? = 15 B ? ÷ 405 = 15 C 15 × ? = 405 D ? ÷15 = 405
    6·2 answers
  • 13+7×12+9 equals what
    8·2 answers
  • What number must you add to complete the square for x^2 + 4x = 15 ?
    8·1 answer
  • Spruce budworms are a major pest that defoliates balsam fir. They are preyed upon by birds. A model for the per capita predation
    15·1 answer
  • 7<br> 9<br> 3<br> 10<br> Simplify the answer if possible.)
    9·1 answer
  • Use the graph of f(x) to estimate f(3).
    5·1 answer
  • Simplify 4r-4r-10s+2s
    5·1 answer
  • Jenny is given the three sets of ordered pairs shown in the picture. Rhonda says that all three pairs represent functions. Jenny
    8·1 answer
  • Prepare the journal entries to record the following transactions on Pharoah Company’s books using a perpetual inventory system.
    14·1 answer
  • PLSSSS HELPPP 18 POINTS MATHHH PLSSS HELPPP
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!