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sertanlavr [38]
3 years ago
11

On a test, 1/4 of a class earns A’s and 1/3 earned B’s. What part of the class earned either an A or a B?

Mathematics
2 answers:
Mrac [35]3 years ago
3 0

Answer:

I think its 7/12

Step-by-step explanation:

what i did was find the common denominator for both and it would be

1/4= 3/12      1/3= 4/12 and then i added it all together and it gave me 7/12

WITCHER [35]3 years ago
3 0

Answer:

7/12

Step-by-step explanation:

1/4 got A's, 1/3 got B's. 0.25 plus 0.33... = 0.583...

0.583... simplified as a fraction is 7/12

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Mashcka [7]

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olga55 [171]
You can solve this problem two ways.

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A ball is thrown into the air with an upward velocity of 48 ft/s. Its height h in feet after t seconds is given by the function
Masja [62]
The equation modeling the height of the ball at time,t is given by h=-16t²+48t+6
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Time taken for the ball to reach the maximum height will be given by:
h'(t)=-32t+48=0
finding the value of t we get:
32t=48
t=48/32
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b]</span><span> What is the ball’s maximum height?
The maximum height will be:
h(1.5)=-16(1.5)</span>²+48(1.5)+6
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Step-by-step explanation:

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