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3 years ago

6

In a group of 1,200 people 252 have blue eyes, 132 have green eyes, and 348 have black eyes. What is the probability that a pers

on chosen at random from this group has blue eyes?

2 answers:

docker41 [41]3 years ago

3 0

252/1200

or

21/100 simplified

iris [78.8K]3 years ago

3 0

Answer:

21/100

Step-by-step explanation:

the probability is given by the amount of people with blue eyes divided by the total amount.

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Write 9.55 as a mixed number

jeka57 [31]

9.55 as a mixed number would be 9 11/20.

9.55 = 9 55/100 = 9 11/20

Hope this helps !

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2 years ago

A recipe for jelly frosting calls for 1/3 cup of jelly and 1 egg white.

Dvinal [7]

Answer:

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Step-by-step explanation:

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2 years ago

Find the unknown side length of the rectangle if its area is 11 square feet.

expeople1 [14]

Answer:

3

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3 years ago

Read 2 more answers

Which of the following are solutions to 2x2 – 8x - 90? Select all that apply.

Bond [772]

Answer:

x=-5, x=9

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$2x^{2} -8x-90$

equate to zero

$2x^{2} -8x-90=0$

so

$2=-1\\b=-8\\c=-90$

substitute in the formula

$x=\frac{-(-8)\pm\sqrt{-8^{2}-4(2)(-90)}} {2(2)}$

$x=\frac{8\pm\sqrt{784}} {4}$

$x=\frac{8\pm28} {4}$

$x=\frac{8+28} {4}=9$

$x=\frac{8-28} {4}=-5$

therefore

The solutions are x=-5, x=9

6 0

2 years ago

I don't know how to do this practice problem :/

Veseljchak [2.6K]

First of all, we know that Emily travels 3/4 of a mile in 4 minutes and 30 seconds (i.e. 9/2 of a minute). So, her current velocity is

$v = \dfrac{\frac{3}{4}}{\frac{9}{2}} =\dfrac{3}{4}\cdot\dfrac{2}{9} = \dfrac{1}{6}$ of a mile per minute.

At this speed, it takes

$t = \dfrac{s}{v} = \dfrac{3.42}{\frac{1}{6}} = 3.42\cdot 6 = 20.52$

minutes to travel 3.42 miles.

Since she left at 8.25, she will arrive at about 8.46, so she's on time for school.

8 0

2 years ago