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Lostsunrise [7]
3 years ago
13

The diameter of a circle is 4 cm. Which equation can be used to find its circumference?

Mathematics
2 answers:
Romashka-Z-Leto [24]3 years ago
7 0
Pi times 4 is the answer because C=pi * d
Leya [2.2K]3 years ago
5 0

Answer:

pi times 4

Step-by-step explanation:

Circumference: pi times diameter (pi)(d) or pi times 2 times the radius (pi)(2r)

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Helppppppppopopoppppp
skelet666 [1.2K]

Answer:

DG = 30

Step-by-step explanation:

Given:

DH = 6

DE = 4

EF = 16

Required:

DG

Solution:

DG = DH + HG

DG = 6 + HG

Let's find HG

Given that HE is parallel to the third side of ∆DGF, based on the side-splitter theorem, the other two sides of ∆DGF are divided proportionally.

Therefore,

DH/HG = DE/EF

6/HG = 4/16

Cross multiply

HG*4 = 16*6

HG = 96/4

HG = 24

✔️DG = 6 + HG

DG = 6 + 24

DG = 30

7 0
3 years ago
Which trigonometric function has a range that does not include 0.4?
Montano1993 [528]
<h2>Hello!</h2>

The answer is: y=cscx

<h2>Why?</h2>

Domain and range of trigonometric functions are already calculated, so let's discard one by one in order to find the correct answer.

The range is where the function can exist in the vertical axis when we assign values to the variable.

First:

y=cosx: Incorrect, it does include 0.4 since the cosine range goes from -1 to 1 (-1 ≤ y ≤ 1)

Second:

y=cotx: Incorrect, it also does include 0.4 since the cotangent range goes from is all the real numbers.

Third:

y=cscx: Correct, the cosecant function is all the real numbers without the numbers included between -1 and 1 (y≤-1 or y≥1).

Fourth:

y=sinx : Incorrect, the sine function range is equal to the cosine function range (-1 ≤ y ≤ 1).

I attached a pic of the csc function graphic where you can verify the answer!

Have a nice day!

8 0
4 years ago
Select all the ordered pairs that satisfy the function y = 3x -4.
aksik [14]

Answer:

B and D

Step-by-step explanation:

plug in the x and y for the x and y in the equation

if the two sides come out equal to eachother they satify the function

if they dont well they dont satisfy the function

hope this helps <3

4 0
3 years ago
What is the value of x in the equation 4x + 8y = 40, when y = 0.8?
Alona [7]
4x+8y=40\\\\ \ \ \ \ when\ y=0.8:\\\\4x+8\cdot0.8=40\\4x+6.4=40\ \ \ \ |subtract\ 6.4\\4x=40-6.4\\4x=33.6\ \ \ |:4\\\boxed{x=8.4}
8 0
3 years ago
Read 2 more answers
PLEASE I NEED HELP!!!
pantera1 [17]

Answer:

below

Step-by-step explanation:

f(3)=2

f(20)=0

f(8)=4

f(0)=-1

if f(x)=9 then x=4

if f(x)=4 then x=8

f(x)=0 then x=20

7 0
3 years ago
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