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Paul [167]
3 years ago
15

In a direct variation, the constant of proportionality is -3. Which of the following would be its equation?

Mathematics
1 answer:
saw5 [17]3 years ago
7 0

Answer:

C

Step-by-step explanation:

The equation of direct variation is y=kx.

K is the constant of proportionality, which is in this case is -3.

y=-3x

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when a decimalis written in word form, what indicates that the equivelent form is a mixed number and not a fraction
UkoKoshka [18]

Answer:

"point"

Step-by-step explanation:

A sample decimal number might be 5.37.  We'd describe this in words as "five point 37."  So the word "point" would indicate that 5.37 is a mixed number.

8 0
3 years ago
The circumference of a circle is 36pi cm what is the radius
alexdok [17]

Answer:

The radius is 18 cm

Step-by-step explanation:

The formula for circumference with radius is

C = 2*pi*r

We know the circumference is 36 pi

36 pi = 2 * pi *r

Divide by pi

36 pi/pi = 2 * pi/pi *r

36 = 2r

Divide by 2

36/2 = 2r/2

18 = r

8 0
3 years ago
PLEASE HELP ASAP PYTHAGOREAN THEOREM
kramer

11.66 or 12

Step-by-step explanation:

c^2 = a^2 + b^2

19^2 = 15^2 + b^2

361 = 225 + b^2

361 - 225 = b^2

136 = b^2

(square root of both sides)

b = 11.66or 12

7 0
2 years ago
Read 2 more answers
What is the sum of 6 5/3 +5 1/7
madreJ [45]
12 17/21 is the sum
8 0
3 years ago
If 8,a,b,27 are in geometric sequence, find the value of a and b.​
wel

Answer:

a = 12 and b = 18

Step-by-step explanation:

Given that,

8,a,b,27 are in geometric sequence.

For a GP, the nth term is given by :

a_n=ar^{n-1}

Put n = 4

a_4=ar^{4-1}\\\\a_4=ar^3\\\\27=8\times r^3\\\\r^3=\dfrac{27}{8}\\\\r=\dfrac{3}{2}=1.5

Put n = 2,

a_2=ar^{2-1}\\\\a=ar\\\\a=8\times 1.5\\\\a=12

Put n = 3

a_3=ar^2\\\\=8\times 1.5^2\\\\b =18

So, the values of a and b is 12 and 18 respectively.

3 0
3 years ago
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