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
saul85 [17]
3 years ago
8

Which equation has a constant of proportionality equal to 2?

Mathematics
1 answer:
NemiM [27]3 years ago
5 0

Answer:

A

Step-by-step explanation:

The equation y=kx describes the proportional relationship between variables x and y. In this equation, k is the coefficient of proportionality.

Consider all options:

A. For the equation

y=\dfrac{10}{5}x,

the coefficient of proportionality is

k=\dfrac{10}{5}=2

B. For the equation

y=\dfrac{2}{2}x,

the coefficient of proportionality is

k=\dfrac{2}{2}=1

C. For the equation

y=\dfrac{2}{4}x,

the coefficient of proportionality is

k=\dfrac{2}{4}=\dfrac{1}{2}

D. For the equation

y=\dfrac{22}{22}x,

the coefficient of proportionality is

k=\dfrac{22}{22}=1

You might be interested in
. There are 10 beads in a bag. 5 beads are black; 3 beads are white and the rest are red. A bead is picked at random. Find the p
Bingel [31]

Part A

P(white) = (3 white)/(10 total) = 3/10

<h3>Answer: 3/10</h3>

==============================================

Part B

10 total, 3 are white

10-3 = 7 are not white so they are either black or red

P(black or red) = 7/10

<h3>Answer: 7/10</h3>

==============================================

Part C

Earlier in part B we calculated 7 beads that weren't white

This means P(not white) = P(black or red) = 7/10

They are the same probability just phrased slightly different ways.

<h3>Answer: 7/10</h3>

==============================================

Part D

There aren't any blue beads (unless there's a typo somewhere). So the probability of picking not blue is 100% or we represent this as the value 1.

<h3>Answer: 1</h3>
3 0
2 years ago
The owner of an orange grove estimates that if 24 trees are planted per acre, then each mature tree will yield 600 oranges per y
tia_tia [17]

Answer:

16428 oranges

Explanation:

Total yield = number of trees × number of oranges in each tree

Initial yield = 600×24= 14400 oranges

To find the equation needed, let x = additional trees and y= total yield

Number of trees = 24 +x

Number of oranges in each tree = 600-12x

Equation of total yield y= (24+x)(600-12x)

y= 14400-288x+600x-12x²

y= -12x²+312x+14400

Using a graphing calculator, from the graph drawn for this quadratic equation, we notice that it is a parabola. Therefore to find the maximum value, we should find the maximum point which is at the vertex of the parabola, we use the formula x= -b/2a

A quadratic equation is such: ax²+bx+c

Therefore x =-312/2×-12

x= -312/-24

x= 13

So we can conclude that in order to maximise oranges from the trees, the person needs to plant an additional 13 trees. Substituting from the above:

24+x=24+13= 37 trees in total

y= -12x²+312x+14400= -12×13²+312×13+14400= -2028+4056+14400

=16428 oranges in total yield

8 0
3 years ago
Find the area of the triangle.
nalin [4]
I believe it is 8x.

Use the formula A=1/2(b*h)

A=1/2(4x(5x-1))
A=1/2(20x-4x)
A=1/2(16x)
A=8x
4 0
2 years ago
Sven determined that the x-coordinate is approximately 3.6 because the point is closer to 4 than 3 and seems to be a little more
mezya [45]

The y-coordinate is between -1 and -2. It is close to halfway between -1 and -2, but it is a little less than halfway.

Answer: Choice B.   y \approx -1.4

5 0
3 years ago
Read 2 more answers
Please Help! First answer will be marked as Brainliest The table compares the height of a table and the height of the chairs (bo
kakasveta [241]

Answer:

Yes.

Step-by-step explanation:

If you write out the coordinates, you can see that you can do the Vertical Line Test and confirm that if you were to write a function, it would be an actual function. No 2 x-values can be the same y-values. The coordinates all have separate xy values (or the same exact xy values) and you can determine a function.

4 0
3 years ago
Read 2 more answers
Other questions:
  • The original price of a game system was reduced by $99.
    5·2 answers
  • Help plz !!!!!!!!!!!!!!!!!
    13·2 answers
  • Use mental math to complete the pattern5×6
    12·1 answer
  • if x degree, 2xdegree,3xdegree,4x degree,140 degree and 160 degree are the angles of a hexagon,find the sizes of unknown angles.
    15·2 answers
  • Use cross products to determine which of the following proportions are equivalent to each other. Select all situations that appl
    5·1 answer
  • Some students want to know if residents of their town are in favor of building a new school. Kevin surveys all of the residents
    7·1 answer
  • For the following exercises, graph the pair of equations on the same axes, and state whether they are parallel, perpendicular, o
    9·1 answer
  • What is the value of 8+ n, when n is equal to 15?
    13·2 answers
  • Answer mah question pleeease~
    5·2 answers
  • HELP ASAP WILL GIVE BRAINLIST
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!