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IgorC [24]
3 years ago
14

What is 2/9 + (-1/2) simplified?

Mathematics
2 answers:
disa [49]3 years ago
4 0
2/9 + (-1/2)

Simplify, 2/9 - 1/2

Change the denominator on both sides into the LCM of 2 and 9

Therefore, 4/18 - 9/18

The answer is -5/18
Afina-wow [57]3 years ago
3 0

Answer:

-5/18

Step-by-step explanation:

2/9 - 1/2

= -5/18

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balandron [24]
5.4-1.3=4.1 is ur answer.
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Twenty-six students apply to serve as an usher at a school function. Eight of the those applying are freshmen, 7 are sophomores,
Gelneren [198K]

Answer:

d

Step-by-step explanation:

from usatestprep:

The situation is not an example of uniform probability because freshmen, sophomores, juniors, and seniors do not have equal probabilities of being selected.; Uniform probability → equal probability of being selected

P(freshman) =  

8/

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; P(sophomore) =  

7 /

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; P(junior) =  

6 /

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; P(senior) =

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3 years ago
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If one container holds 55 balls, how many balls will nine containers hold?
denpristay [2]
1 container = 55 balls
    x 9               x 9
9 containers = ? balls
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<u><em>The answer is 495 balls</em></u>
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An account earns simple interest. $300 at 4% for 3 years a. Find the interest earned. $ b. Find the balance of the account. $
aliina [53]
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Matt and Anna Killian are frequent fliers on​ Fast-n-Go Airlines. They often fly between two cities that are a distance of 1980
Ymorist [56]

Answer:

y (plane speed) 400 miles/hr

x (wind speed)  40 miles/hr

Step-by-step explanation:

going into the wind make the plane flew 5,5 hours to get 1980 miles, implies the real travel speed was

1980 / 5,5 = 360 miles/hours, and at the same time is the result of:  

speed plane (y)  in direction A to B  plus wind speed (x) in direction B to A. Notice opposites direction speed, so we have:

y + (-x) = 360          (1)

The return fly  took 4,5 hours so 1980/4,5 = 440 miles/ hours as the result

Y + x = 440             (2)

We have a two equation with two variables system, It could be solved for any of the procedures. We will use the substitution method.

From equation      (1)        y + (-x) = 360         y  - x = 360      y = 360 + x    (1)

In the second equation    

y + x = 440         then we replace y for its value as function of x

(360 + x ) + x = 440

Solving for x        360 + 2x = 440      or    2x = 440 – 360        

 x   (440 - 360)/2

 x = 40 miles/hr

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And replacing the value of x in eq. (1)        y = 360 + 40 = 400

Y (plane speed) = 400 miles /hr

3 0
3 years ago
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