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3 years ago

Urgent help needed plz.

1 answer:

7 0

There are 6 letters in the word "autumn" so
6! = 6*5*4*3*2*1 = 720
represents the number of ways to arrange the letters (order matters)

Note how there are two letter "u"s here which can't be told apart. If we could tell them apart, then the answer would be 720. However, we can't tell them apart. So we're doubly counting things. To undo this, we divide by 2

720/2 = 360

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Final Answer: 360

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Do the following form a right triangle? 20, 25, 30 True False

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Answer:

False

Step-by-step explanation:

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2 years ago

Tom and Jerry have a pool with a diameter of 12 ft. What is the circumference of the pool?

RSB [31]

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Answer:

$\large\boxed{C = 12\pi ft\text{ or } C = 37.68ft}$

$\text{Formula for the circumference of a circle:}$

$C = d\pi$

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3 years ago

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A container of orange juice contains 6 3/8 of juice. Jasmine used 3 6/8 ounces to make punch for a party,how many ounces are are

mel-nik [20]

Answer:

2 5/8 ounces of juice are left.

Step-by-step explanation:

6 3/8 - 3 6/8 =

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5 0

2 years ago

2x-y²=1 3x+y=4 Heelp...

bogdanovich [222]

So first we solve for y in second equation
3x+y=4
y=4-3x
sub for y in first equiton
2x-(4-3x)^2=1
2x-(16-12x-12x+9x^2)=1
2x-(16-24x+9x^2)=1
2x-16+24x-9x^2=1
-9x^2+26x-16=1
times -1 both sides
9x^2-26x+16=-1
add 1 to both sides
9x^2-26x+17=0
factor
(x-1)(9x-17)=0
set each to zero
x-1=0
x=1

9x-17=0
9x=17
x=17/9

so sub back to find y
y=4-3x
y=4-3(1)
y=4-3
y=1
(1,1)

y=4-3x
y=4-3(17/9)
y=4-17/3
y=12/3-17/3
y=-5/3
(17/9,-5/3)

the 2 intersection points are
(1,1) and $( \frac{17}{9} , \frac{-5}{3} )$

6 0

3 years ago