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krek1111 [17]
2 years ago
10

What expression is equivalent x^-8

Mathematics
1 answer:
Stolb23 [73]2 years ago
7 0

Answer:

x^-^8 = y^-^8

Step-by-step explanation:

Any variable is equivalent to x^-8.

hope this helps.

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At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?
Gnoma [55]

There would be 12 people at the party!

In general, with n+1 people, the number of handshakes is the sum of the first n consecutive numbers: 1+2+3+ ... + n.

Since this sum is n(n+1)/2, we need to solve the equation n(n+1)/2 = 66.

This is the quadratic equation n2+ n -132 = 0. Solving for n, we obtain 11 as the answer and deduce that there were 12 people at the party.

Since 66 is a relatively small number, you can also solve this problem with a hand calculator. Add 1 + 2 = + 3 = +... etc. until the total is 66. The last number that you entered (11) is n.

Hope this helps!

3 0
3 years ago
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Determine the standard form of the equation for the circle with center (h,k) = (-5 ½) and radius r =1
wariber [46]
Asuuing yo meant (h,k)=(-5,1/2)

equation is (x-h)^2+(y-k)^2=r^2
(h,k) is center and r=radious
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h=-5
k=1/2

(x-(-5))^2+(y- \frac{1}{2} )^2=1^2
(x+5)^2+(y- \frac{1}{2} )^2=1
if you wanted us to expand
x²+y^2+10x-y+25.25=1
8 0
3 years ago
1+-2 =? please help mee
Kamila [148]
A positive plus a negative will equal a negative #.
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5 0
3 years ago
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Please help! you have to find the surface area of the inage below!
viva [34]
Your answer would be 64 in².

To find the surface area, you just need to find the area of each of the shapes shown and add them together.
We can find the area of one of the triangles by doing:
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As there are 4 identical triangles, the area of all of them would be 12 × 4 = 48 in².

Now we need to find the area of the square in the middle, which would be 4 × 4 = 16 in².

Adding these together gives us 16 + 48 = 64 in²

I hope this helps!
4 0
3 years ago
What type of number is 3pi+ 1?<br> CHOSE ALL ANSWERS THAT APPLY
seraphim [82]

Answer:

 3pi is irrational.

Step-by-step explanation:

An irrational number multiplied by a rational number is always irrational.

:)

4 0
2 years ago
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