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ddd [48]
4 years ago
12

Find the area of the circle

Mathematics
1 answer:
Dmitry [639]4 years ago
6 0

Answer:

To find the area of a circle you use the formula a=\pi r^{2}

r is the radius so plug that in.

if you only have the diameter, just divide that number by 2 to get the radius

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Match each operation involving fx) and g*) to its answer.
prisoha [69]

Answer:The correct answer is:

f(2) = g(2) and f(0) = g(0)

Explanation:

If f(x) = g(x), this means the values of the functions are the same when using the same numbers.  That means if we use 2 for x, then f(2) would need to be equal to g(2); if we use 0 for x, then f(0) would need to be equal to g(0).  This is the case in this option, so this option is correct.

5 0
3 years ago
Find the angle between the vectors.<br> U=&lt; -4,-3&gt;<br> V = &lt; -1,5&gt;
kati45 [8]

Step-by-step explanation:

The formula for the angle between vectors

\alpha  =  \cos {}^{ - 1} ( \frac{uv}{ |u|  |v| } )

To multiply vectors, multiply the first component and multiply the second component and add them.

(-4*-1) + (-3*5)= 4-15=-11.

To find magnitude of vectors, use the Pythagorean theorem

u =  \sqrt{ { - 4}^{2} +  { - 3}^{2}  }  = 5

v =  \sqrt{ - 1 {}^{2}  + 5 {}^{2} }  =  \sqrt{26}

so

|u|  |v|  = 5 \sqrt{26}

Know we have,

\alpha  =  \cos {}^{ - 1} ( \frac{7}{5 \sqrt{26} } )

\alpha  = 105.94

in degrees,

\alpha  = 1.849

in radians

8 0
2 years ago
Read 2 more answers
3. What is the value of x? A 52 C86 B 68 D 104
Svet_ta [14]

Answer:

The value of x would be 104 degrees.

4 0
3 years ago
Which expression is equivalent to 1/3y? A. 1/3y(y + 12) - 12
fomenos

Answer:

1/3y = 1/6y + 1/6(y + 12) - 2 thus c: is your answer

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
24 is 40% of what number
sattari [20]
24 is 40% of 60
first you do 24/4=6  and 40%/4=10%
then 6*10=60 and 10%*10=100%
*=times
8 0
3 years ago
Read 2 more answers
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