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Aliun [14]
3 years ago
5

4. What is the circumference of a circle with a radius of 4 cm?

Mathematics
1 answer:
zepelin [54]3 years ago
8 0

Answer:

25.13

Step-by-step explanation:

2 π r

2 x π x 4 =25.13

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I NEED HELP WITH MATH
LuckyWell [14K]

Answer:

B and D

Step-by-step explanation:

When you subtract a negative number, you are adding.

7-(-7)=7+7=14

Adding goes right on a number line.

7 0
2 years ago
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Find the measure of the arc or angle indicated.​
xenn [34]

For each problem, use the inscribed angle theorem.

19.

45^\circ=\dfrac12m\widehat{QR}\implies m\widehat{QR}=90^\circ

20.

95^\circ=\dfrac12m\widehat{ABC}\implies m\widehat{ABC}=190^\circ

21.

49^\circ=\dfrac12m\widehat{LR}\implies m\widehat{LR}=98^\circ

LN is a diameter, so arc LN has measure 180º, and so

m\widehat{LR}+m\widehat{RN}=m\widehat{LN}=180^\circ\implies m\widehat{RN}=82^\circ

7 0
3 years ago
What does it mean?<br> how do i solve the question
xxTIMURxx [149]
A means an area 
s side of the square, because of all sides are equal 
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4 0
2 years ago
I need help with this bad
Gala2k [10]
6. A-C
8. A-D
Thats all I know, sorry.
6 0
3 years ago
2 Points
liraira [26]

Two or zero expresses the possible number of positive real  solutions for the given polynomial equation.

Answer: Option D

<u>Step-by-step explanation:</u>

Given equation:

        x^{3}-4 x^{2}-7 x+28=0

First, we put hit and trial method to find out the one solution. So, if we put x=4 then the above expression will become zero.  We can also write the above expression as  

      (x-4) \times\left(x^{2}-7\right)=0

We know the formula, a^{2}-b^{2}=(a+b)(a-b), make use of this, we get

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So, x=4, \sqrt{7},-\sqrt{7}

Hence, from the above expression, we have three values of x as x= 4, 2.64 and -2.64

8 0
3 years ago
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