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Marrrta [24]
3 years ago
15

What is the area of a circle, rounded to the nearest tenth, with a diameter of 12 centimeters?

Mathematics
1 answer:
inessss [21]3 years ago
3 0

Answer:

113

Step-by-step explanation:

area of a circle is 3.14*r^2

r=d/2 r=6

3.14*36=113

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Can ya'll answer this question?​
diamong [38]
The third fin is the answer.
3 0
3 years ago
If a+b+c =0 show that a³+b³+c³= 3abc
slega [8]

Answer:

Step-by-step explanation:

a+b+c=0, a+b=-c,a+c=-b, b+c=-a

(a+b+c)^3=(a+b+c)^2*(a+b+c)=(a^2+b^2+c^2+2ab+2ac+2bc)*(a+b+c)=

a^3+ab^2+ac^2+2a^2b+2a^2c+2abc+a^2b+b^3+bc^2+2ab^2+2abc+2b^2c+a^2c+b^2c+c^3+2abc+2ac^2+2bc^2=a^3+b^3+c^3+3a^2b+3a^2c+3ac^2+3ab^2+3bc^2+3b^2c+6abc=

a^3+b^3+c^3+3a^2*(b+c)+3c^2(a+b)+3b^2(a+c)+6abc=

a^3+b^3+c^3+3a^2*(-a)+3c^2*(-c)+3b^2*(-b)+6abc=

a^3+b^3+c^3-3a^3-3c^3-3b^3+6abc=

6abc-2a^3-2b^3-2c^3=2(3abc-a^3-b^3-c^3)=

2*[3abc-(a^3+b^3+c^3)]=0

so 3abc-(a^3+b^3+c^3)=0

so a^3+b^3+c^3=3abc

7 0
3 years ago
Help I'll give you 100 points
Dvinal [7]

✏ Answer:

y=-9

Step-by-step explanation:

2-\frac{1}{8}y=11+\frac{7}{8}y

<u>➠</u><u> Subtract 2 from both sides:-</u>

<u />2-\frac{1}{8}y-2=11+\frac{7}{8}y-2

-\frac{1}{8}y=\frac{7}{8}y+9

<u>➠</u><u> Subtract 7/8y  from both sides:-</u>

<u />-\frac{1}{8}y-\frac{7}{8}y=\frac{7}{8}y+9-\frac{7}{8}y

-y=9

<u>➠</u><u> Divide both sides by -1:-</u>

<u />\frac{-y}{-1}=\frac{9}{-1}

y=-9

<u>OAmalOHopeO</u>

<u>✎--------------------------</u>

7 0
2 years ago
Read 2 more answers
PLZ HELP WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST What is the slope-intercept form of the equation of the line that passes
grigory [225]

Answer:

A.

Step-by-step explanation:

We are given the two points (2,7) and (4,-1).  In order to determine the linear equation, we need to find the slope and the y-intercept. First, find the slope <em>m.</em> Let (2,7) be x1 and y1, and let (4,-1) be x2 and y2:

m=\frac{y_2-y_1}{x_2-x_1} =\frac{-1-7}{4-2}=-8/2=-4

Thus, the slope is -4.

Now, to find the y-intercept, we can use the point-slope form. Recall that the point slope form is:

y-y_1=m(x-x_1)

Where (x1, y1) is a coordinate pair and m is the slope.

Use either of the two coordinate pair. I'm going to use (2,7). Substitute them for x1 and y1, respectively:

y-(7)=-4(x-(2))\\y-7=-4x+8\\y=-4x+15

This is also slope-intercept form. The answer is A.

7 0
3 years ago
Read 2 more answers
An owner of Honda City car sells his car at a price of RM 7.50,000 with a loss present of 12.5%. Then find the price at which he
Mars2501 [29]

Answer:

Cost = RM 857143

Loss = RM 107143

Step-by-step explanation:

<u>Given:</u>

  • Selling price SP = RM 750000
  • Loss% = 12.5
  • Cost price CP = x

<u>Cost price is found as:</u>

  • SP = CP - 12.5%
  • 750000 = x - 12.5%
  • 750000= x*(100-12.5)/100
  • 750000= 0.875x
  • x= 750000/0.875
  • x≈ RM 857143

<u>Loss is:</u>

  • RM 857143 - 750000 = RM 107143

8 0
3 years ago
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