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Diano4ka-milaya [45]
3 years ago
7

What is ​ −3/5−(−2/5) ​

Mathematics
1 answer:
EleoNora [17]3 years ago
7 0
I hope it can help you

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What is the maximum value of the function f(x)= 12 - 3sin (3pi/2 x)
Natali [406]
The lowest value of sinα is -1.

When x=1, you get:

f\left( x \right) =12-3\sin { \left( \frac { 3 }{ 2 } \pi  \right)  } \\ \\ =12-3\left( -1 \right) \\ \\ =12+3\\ \\ =15

So the maximum value of the function is 15.
6 0
3 years ago
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What is the area of a circle whose equation is (x-3)² + (y + 1) ² =81?
kupik [55]
Okay, first, given the equation, we need to find out what the radius of the circle is. Let us state the general equation of a circle: 

\frac{(x-x_{1})^2}{r^2}+ \frac{(y-y_{1})_^2}{r^2}=1

Where (x_{1}, y_{1}) is the centre of the circle. In this case, we don't need to know the centre. Just the radius. 

Let us start by converting the equation into standard for, which I typed above. Divide both sides by 81. 

\frac{(x-3)^2}{81}+ \frac{(y+1)^2}{81}=1

Great! We now know the radius of the circle. It is \sqrt{81} because it is the bottom fraction. Now we know that the radius is 9. 

So now lets input this into the area of circle formula: 

A=πr^2 

Now we insert our radius. 

A=9^2π 

=A=81π 

You can convert that into a decimal if you wish. 

Hope this helped!

~Cam943, Moderator
4 0
3 years ago
Ce sunt mamiferele ??????
katrin [286]

<span>un animal vertebrat cu sânge cald a unei clase, care se distinge prin posesia de păr sau blană, secreția de lapte de femei pentru hrana tinerilor, și (de obicei) nașterea pui vii.</span>
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Select the correct answer. (Remember there will be a length, width and height and they are all different numbers).
Bogdan [553]
A) 122 in^2, this is because 3 x 7 x 2= 42, 4 x 7 x 2= 56, 3 x 4 x 2= 24, once you add up all the sums it equals 122
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2 years ago
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Evaluate :
oee [108]
The first one is 43/72 which can’t be simplified

The second one is 17/18
6 0
3 years ago
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