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NARA [144]
3 years ago
8

Find the area of a circle with the diameter of 3 centimeters. Use 3.14 for pi ().

Mathematics
1 answer:
wlad13 [49]3 years ago
3 0

Answer:

7.065 sq. cm

Step-by-step explanation:

Diameter= 3 cm

Since 2r=d, the radius is 1.5 cm

Circle area formula:

πr^2 --> 3.14(r^2)

Plug in r:

A=3.14(1.5^2)

A=3.14(2.25)

A=7.065

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Answer: 10

Step-by-step explanation:

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3 years ago
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a swimmer swam 48 kilometers in d days. What is the value of the d if the swimmer swam an average of 3.2 kilometers daily?
lianna [129]
Time= distance/speed

=48/3.2= 15
6 0
3 years ago
Help me plz The formula K=59(F−32)+273.15 converts temperatures from Fahrenheit F to Kelvin K.
quester [9]

Let's see what to do buddy...

Step-by-step explanation:

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k = 59(f - 32) + 273.15

Subtract the sides of the equation minus -273.15

k - 273.15 = 59(f - 32)

Divided the sides of the equation by 59

\frac{k - 273.15}{59} = \frac{59}{59}  (f - 32)  \\

\frac{k - 273.15}{59} = f - 32 \\

Subtract the sides of the equation plus 32

\frac{k - 273.15}{59} + 32 = f \\

And we're done.

Thanks for watching buddy good luck.

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7 0
4 years ago
(0,-4),(1,0),(2,2) find a quadratic function in standard form for each set of points.
Sphinxa [80]
We are given the points
 <span>(0,-4),(1,0),(2,2)
The standard form a quadratic function (in terms of x) is
y = Ax2 + Bx + C
Subsitute the points
-4 = 0 + 0 + C
C = -4

0 = A + B - 4

2 = 4A + 2B - 4

Solve for A and B
A = -1
B = 5

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y = -x2 + 5x - 4</span>
4 0
3 years ago
Help me help me answer this
Leya [2.2K]

If both triangles are congruent (that's what the sign means), then AD=CB, and CD=AB. Substituting what we are given into CD=AB,


6x-5=3x+10

Solving the equation:

3x=15

x=5

So we know that 2x+4 (the value of AD) becomes 2*5 +4, and you get 14. Since we know that AD=CB, then CB is also 14. No need to find y!

Answer: CB=14

8 0
3 years ago
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