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katrin [286]
2 years ago
9

Help me pleasee this is to confusing.

Mathematics
1 answer:
AVprozaik [17]2 years ago
5 0

Answer:

What's confusing ??? You literally just put a dot on the number line

Example:

1.3, move 3 units to the right of 1 and place a dot there

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I just need help with problems 15 to 20 <br> Please help
Andreas93 [3]
73.5/5 because the middle number of four and three is 3.5 <span />
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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
Approximate the value of 5(pi)
max2010maxim [7]

Answer: C

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5 0
2 years ago
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Sam's mother is twice as old as sam, In 12 years, Sam will be as old as his mother was 12 years ago. How old are is sam and his
irinina [24]

Answer:

12 and 24

Step-by-step explanation:

cuz if he's 12 and she's 24 in 12 years he'll be 24

4 0
2 years ago
Read 2 more answers
-5+4=3x-9 <br> My teacher told me it was negative three.. can someone help?
Alexxx [7]

Answer:

x = 8/3

Step-by-step explanation:

(When solving for a variable, always do the opposite of PEMDAS)

-5 + 4 = 3x - 9

-1 = 3x - 9

8 = 3x

8/3 = x

4 0
3 years ago
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