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3 years ago

Trisha invited 12 friends to her party. Eight of her friends are girls. What is 8 12 in simplest form?

Mathematics

2 answers:

goblinko [34]3 years ago

7 0

Answer:

2/3

Step-by-step explanation:

4 goes into 8 twice and 4 goes into 12 three times therefore it would be 2/3

Korolek [52]3 years ago

6 0

Answer:

2/3

Step-by-step explanation:

8 out of 12 of her friends are girls, this makes up more than half of the people.

2/3 are girls

1/3 are boys or other.

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Solve the equation x^2-4x+85=0

lara [203]

Can't factor
use quadratic
for
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^2-4ac} }{2a}$

given
1x^2-4x+85=0
a=1
b=-4
c=85

x= $\frac{-(-4)+/- \sqrt{(-4)^2-4(1)(85)} }{2(1)}$
x= $\frac{4+/- \sqrt{16-340} }{2}$
x= $\frac{4+/- \sqrt{-324} }{2}$
x= $\frac{4+/- (\sqrt{-1})(\sqrt{324}) }{2}$
remember that √-1=i
x= $\frac{4+/- i(\sqrt{324}) }{2}$
x= $\frac{4+/- i(18) }{2}$
x=2+/-9i

x=2+9i or x=2-9i

3 0

3 years ago

A dance instructor chose four of his 10 students to be on stage for a performance. If order does not matter, in how many differe

Vikki [24]

This is a combination in which you choose 4 from 10.
The formula is
combinations = 10! / 4! * (10-4)!
combinations = 10! / 4! * 6!
combinations = 10 * 9 * 8 * 7 * 6! / 4! * 6!
combinations = 10 * 9 * 8 * 7 / 4 * 3 * 2
combinations = 10 * 3 * 7
combinations = 210
Source:
http://www.1728.org/combinat.htm

4 0

3 years ago

Read 2 more answers

7.) The width of a vegetable garden is times its length. If the length of the garden is 73

Solnce55 [7]

Answer:

So, the length (L) = 7 3/4 ft = 31/4 (as an improper fraction)

the width (W) = (1/3)xL

So the width = 1/3 x (31/4) =

31/12 = 2 7/12 feet

Step-by-step explanation:

its up there

5 0

2 years ago

Leila's father used six-tenths of a full tank of gasoline on their trip. Nine gallons were used.

Bad White [126]

Answer:

Step-by-step explanation:

if 6/10 = 9 gal. then we can divide 9 by 6 and then multiply that answer by ten

5 0

3 years ago

A train travels at a constant speed of 35 mi/h. How long does it take the train to travel 490 mi?

allsm [11]

14 hours . Just divide 35 into 490 & ypu get 14

7 0

3 years ago