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
topjm [15]
3 years ago
14

the equation y equals 0.25 x describes a proportional relationship between X and Y what is the constant of proportionality

Mathematics
1 answer:
Fittoniya [83]3 years ago
4 0
The constant of proportionality is for every 1 x, there is 0.25 y. y = 0.25, and on a graph, x is always the "1." Since x is worth 1, y must be worth 0.25.
You might be interested in
The width of a rectangle is 9 cm. The perimeter is 40 cm. What is the length of the rectangle?
Keith_Richards [23]

Answer:

11

Step-by-step explanation:

2(l+w)

40= 2(9+x)

40= 18+2x

Subtract 18 from 40

22=2x

Divide 2x by itself and 22

11=x or x=11

6 0
3 years ago
Read 2 more answers
Verify sine law by taking triangle in 4 quadrant<br>Explain with figure.<br>​
Ksivusya [100]

Proof of the Law of Sines

The Law of Sines states that for any triangle ABC, with sides a,b,c (see below)

a

 sin  A

=

b

 sin  B

=

c

 sin  C

For more see Law of Sines.

Acute triangles

Draw the altitude h from the vertex A of the triangle

From the definition of the sine function

 sin  B =

h

c

    a n d        sin  C =

h

b

or

h = c  sin  B     a n d       h = b  sin  C

Since they are both equal to h

c  sin  B = b  sin  C

Dividing through by sinB and then sinC

c

 sin  C

=

b

 sin  B

Repeat the above, this time with the altitude drawn from point B

Using a similar method it can be shown that in this case

c

 sin  C

=

a

 sin  A

Combining (4) and (5) :

a

 sin  A

=

b

 sin  B

=

c

 sin  C

- Q.E.D

Obtuse Triangles

The proof above requires that we draw two altitudes of the triangle. In the case of obtuse triangles, two of the altitudes are outside the triangle, so we need a slightly different proof. It uses one interior altitude as above, but also one exterior altitude.

First the interior altitude. This is the same as the proof for acute triangles above.

Draw the altitude h from the vertex A of the triangle

 sin  B =

h

c

      a n d          sin  C =

h

b

or

h = c  sin  B       a n d         h = b  sin  C

Since they are both equal to h

c  sin  B = b  sin  C

Dividing through by sinB and then sinC

c

 sin  C

=

b

 sin  B

Draw the second altitude h from B. This requires extending the side b:

The angles BAC and BAK are supplementary, so the sine of both are the same.

(see Supplementary angles trig identities)

Angle A is BAC, so

 sin  A =

h

c

or

h = c  sin  A

In the larger triangle CBK

 sin  C =

h

a

or

h = a  sin  C

From (6) and (7) since they are both equal to h

c  sin  A = a  sin  C

Dividing through by sinA then sinC:

a

 sin  A

=

c

 sin  C

Combining (4) and (9):

a

 sin  A

=

b

 sin  B

=

c

 sin  C

7 0
2 years ago
How many 1/2 cups servings of r ice are in 3/8 cups of rice? Explain your answer
bija089 [108]

1/2÷ 3/8=4/3. To divide one fraction by another, invert (turn upside-down) the second fraction, then multiply.

5 0
2 years ago
A can is 4 inches wide and 8 inches tall. To the nearest whole number, what is the area of a label that wraps around the can if
Yakvenalex [24]

Answer:

The area of a label is 62.8\ in^{2}

Step-by-step explanation:

we know that

The lateral area of a cylinder (label of the can) is equal to

LA=2\pi rh

we have that

A can is 4 inches wide

so

The diameter of the can is 4 inches

r=4/2=2\ in ----> the radius is half the diameter

h=8-3=5\ in ----> height of the label

substitute in the formula

LA=2(3.14)(2)(5)=62.8\ in^{2}

5 0
3 years ago
A truck can be rented from Company A for ​$120 a day plus ​$0.50 per mile. Company B charges ​$50 a day plus ​$0.70 per mile to
Oksanka [162]
120+.5x=50+.7x
Subtract 50 from both sides and then subtract .5x from both sides to get 70=.2x. Then divide both sides by .2 to get x=350.
4 0
3 years ago
Other questions:
  • Carisa predicted she answered 9 questions correctly out of 10 on a test. She actually got 8 answers correct. By what percent was
    14·1 answer
  • If the original quantity is 10 and the new quantity is 13 what is the percent increase
    7·1 answer
  • The ratio to adults at school festival 11/7 suppose there are a total of 810 kids and adults at the festival how many adults are
    14·1 answer
  • Emily's family loves to work together in the garden. They have a slight preference for flowers, as 60% of their plants are flowe
    9·2 answers
  • I am finding the mean of 13, 14 , 0, 36, 18 ,12. I got an answer of 15r3 how is the answer 15.5 and not 15.3
    7·2 answers
  • Add 4 1/2 + 5 3/4 + 2 1/3
    14·2 answers
  • Why are radicals simplified before adding and subtracting? Explain your reasoning by adding sqrt8 and sqrt32 algebraically. Comp
    11·1 answer
  • Help me pls with this​
    8·1 answer
  • Noah is cutting construction paper into rectangles for a project. He needs to cut one rectangle
    11·1 answer
  • Find the surface area
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!