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never [62]
2 years ago
10

Rewrite in simplest rational exponent form √x • 4√x

Mathematics
1 answer:
nignag [31]2 years ago
3 0

Answer:

4x

Step-by-step explanation:

\sqrt{x}  \cdot \sqrt{x}  = \sqrt{x^2}  = x^{ 2 \times \frac{1}{2}} = x

given :\\\\  \sqrt{x}  \cdot 4\sqrt{x}  = 4 \cdot\sqrt{x} \sqrt{x}  = 4 \sqrt{x^2}  = 4x

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A traveler traveled for 6 hours and covered a distance of 520 km. He traveled the first 260 km by car, and the rest of the way b
Shkiper50 [21]

Answer:

57.78 km/hr

Step-by-step explanation:

Total time taken, t = 6 hours

Total distance covered, d = 520 km

Distance by car = 260

Distance by train = 520 - 260 = 260 km

Train speed = x

Car speed = 2x

Average speed speed = 3x /2

Speed = distance / time

1.5x = 520 / 6

9x = 520

x = 520 / 9

x = 57.777

Average speed of train = 57.78 km/hr

7 0
2 years ago
Jane has 6 red marbles. 4 green marbles, and 2 black marbles in a bag. What is the probability of ramdomly pulling out a green m
fomenos

the total number of marbles in the bag is 12 . so the probability of getting a green marble at random is 4/12 which resluts to 1/3

4 0
3 years ago
Which relationships have the same constant of proportionality between yyy and xxx as the equation 3y=27x3y=27x3, y, equals, 27,
Vera_Pavlovna [14]

Answer:

y=9x

y=\frac{18x}{2}

y=\frac{81x}{9}

Step-by-step explanation:

The given equation is

3y=27x

If we isolate y, we can find the constant

y=\frac{27x}{3}\\ y=9x

So, the constant is k=9.

Another proportions that have the same constant as the given equation are

y=9x

y=\frac{18x}{2}

y=\frac{81x}{9}

8 0
3 years ago
Read 2 more answers
If your grade is a 93% and you got 20 points taken off your grade, what will your new grade be?
vodka [1.7K]
Your grade would be 73%
3 0
3 years ago
A cross-country travels 20 kilometers before she realizes that she has to cover at least 75 kilometers in order to qualify for t
valina [46]
It will be 7 hour and 30 min
5 0
3 years ago
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