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puteri [66]
3 years ago
6

There are 110 people at a meeting. They each shake hands with everyone else. How many handshakes were there?

Mathematics
1 answer:
erik [133]3 years ago
8 0
Each of them shakes hands with 109 others.
109*110 = 11990 handshakes were done.
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Simplify (8m2+m+7m2)-(3m-4m3+2m2)
kondaur [170]

(8m^2+m+7m^2)-(3m-4m^3+2m^2)\\\\=8m^2+m+7m^2-3m+4m^3-2m^2\qquad|\text{combine like terms}\\\\=(4m^3)+(8m^2+7m^2-2m^2)+(m-3m)\\\\=4m^3+13m^2-2m

4 0
3 years ago
What is the step by step of<br> 1/ cos x csc^2 x = sin x/ cot x
Effectus [21]

Answer:

what is the step by step of 1/ cos x csc^2 x = sin x/ cot x

Step-by-step explanation:

1

.

csc

x

=

1

sin

x

2

.

cot

x

=

cos

x

sin

x

Given,

1

−

cos

x

sin

x

=

csc

x

−

cot

x

Simplify the right side.

csc

x

−

cot

x

=

1

sin

x

−

cos

x

sin

x

=

1

−

cos

x

sin

x

∴

, LS

=

RS.

7 0
3 years ago
What is the variance?<br> What is the standard deviation, rounded to the nearest whole number?
Dmitry [639]

Answer:

What is the variance? 84000

 What is the standard deviation, rounded to the nearest whole number? 290

5 stars if this helped  

Step-by-step explanation:

8 0
3 years ago
Jonas solved an equation incorrectly, as shown below:
alexandr1967 [171]
So first he has to divide both sides by 8
wat
he multiplied the right side by 8 but divided left by 8
that is wrong


answer is 4th option
divid not divide 56 by 8
6 0
3 years ago
Read 2 more answers
17 subtracted from x is at lest 19
o-na [289]
17 subtracted from x is:
x-17

x-17 is AT LEAST 19, meaning your inequality sign is going to be a greater than or equal to sign, since it says AT LEAST.

Your expression will be:
x-17≥19
7 0
3 years ago
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