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3 years ago

Combine these radicals. –66 –54

Mathematics

2 answers:

svet-max [94.6K]3 years ago

5 0

Answer:

-100

Step-by-step explanation:

Reptile [31]3 years ago

5 0

Answer:

-120

Step-by-step explanation:

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Romashka [77]

Answer:

The Answer is as below:

Step-by-step explanation:

x y = 3x + x y = 2x - 3 + x

3 12 6

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3 years ago

Solve each equation for y. 3x + 2 =6y

Strike441 [17]

Answer:

1/2x + 1/3 = y

Step-by-step explanation:

3x + 2 =6y

Divide each side by 6

3x/6 + 2/6 = 6y/6

Simplify

1/2x + 1/3 = y

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4 years ago

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3 years ago

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Airida [17]

Answer:

A is the right one

Step-by-step explanation:

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3 years ago

Mandy and Jeff start running around the track in the same direction at the same time. Mandy runs one lap in 2 minutes and 30 sec

Savatey [412]

Answer:

At 8:52:30 am they will be side-by-side again

Step-by-step explanation:

Let s be the distance ran in one 1 lap.

Here Jeff runs one extra lap compared to Mandy for coming side by side again.

Mandy runs one lap in 2 minutes and 30 seconds = 150 s

Speed of Mandy, $=\frac{s}{150}$

Jeff runs one lap in 2 minutes and 15 seconds = 135 s

Speed of Jeff, $=\frac{s}{135}$

Let t be the time when Jeff run one extra lap,

That is

$t\times \frac{s}{135}-t\times \frac{s}{150}=s\\\\t\left ( \frac{1}{135}-\frac{1}{150}\right )=1\\\\t\times \frac{15}{135\times 150}=1\\\\t=1350s$

So after 1350 seconds Jeff comes side by side to Mandy,

They both start at 8:30 am

1350 s = 22.5 minutes = 22 minutes 30 seconds

Time = 8:52:30 am

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3 years ago