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kumpel [21]
3 years ago
13

What is the probability that if you picked out a number ball 3 times you would get the number 7 each time

Mathematics
1 answer:
harina [27]3 years ago
6 0

I don’t get it sorry

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Find the points on the lemniscate where the tangent is horizontal. 8(x2 + y2)2 = 81(x2 − y2)
slamgirl [31]
<span>The answers to this problem are:<span>(<span>±5</span></span>√3/8,±5/8)<span>Here is the solution:
Step 1: <span><span><span>x2</span>+<span>y2</span>=<span>2516</span>[2]</span><span><span>x2</span>+<span>y2</span>=<span>2516</span>[2]</span></span>

Step 2: Substitute:<span> 
</span><span><span>8<span><span>(<span>25/16</span>)^</span>2</span>=25(<span>x^2</span>−<span>y^2</span>)
</span><span>8<span><span>(<span>25/16</span>)^</span>2</span>=25(<span>x^2</span>−<span>y^2</span>)</span></span>
</span><span>x^2</span>−<span>y^2</span>=<span>25/32</span><span>.

Add [2] and [3]:<span> 
</span><span>2<span>x^2</span>=<span>75/32
</span><span>x^2</span>=<span>75/74</span></span>
<span>x=±5</span></span>√3/8<span>
Substitute into [2]:<span> 
</span><span><span>75/64</span>+<span>y^2</span>=<span>50/32
</span><span>y^2</span>=<span>25/64</span></span>
<span>y=±<span>5/8</span></span>

</span>
</span>
3 0
3 years ago
Read 2 more answers
Which represents the inverse of the function f(x) = 4x?
Licemer1 [7]

Answer:

The inverse is 1/4x

Step-by-step explanation:

y = 4x

To find the inverse, exchange x and y

x = 4y

Solve for y

1/4 x = 4y/4

1/4x = y

The inverse is 1/4x = y

3 0
3 years ago
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Evaluate. 5x{(9 +2) X (6 + 3)} + 15​
Tju [1.3M]

Answer:15(3x11^+1)

Step-by-step explanation:

4 0
3 years ago
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What is the way to show the work of box a and box b each contain black tiles and white tiles. They have the same total number of
allsm [11]
Simplifying
\frac{45}{100}
7 0
3 years ago
For the rational function f(x)=(-13x-27)/(x^(2)-4x-12), F(x)=2
grigory [225]
Should be 3.3125. Hope this helps
8 0
3 years ago
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