3 years ago

Please help me i cant do this question

Mathematics

1 answer:

UNO [17]3 years ago

5 0

Answer:

Step-by-step explanation:

$x^{\frac{1}{2} }$ × $x^{\frac{1}{4} }$ = $x^{\frac{1}{2} +\frac{1}{4} }$ = $x^{\frac{3}{4} }$

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3 years ago

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Step-by-step explanation:

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2 years ago

Eugenia walked all the way to school at 3 mph then realized she forgot her math book (how could she?!), so she ran back at 7 mph

kondor19780726 [428]

Let us say distance between Eugenia's home and school is x miles.

Speed of Eugenia when she walked from home to school = 3 mph

Speed of Eugenia when she walked from school to home = 7 mph

Total time taken = 45 minutes or 0.75 hours

We know that the speed distance formula is given by:

$speed=\frac{distance}{time}$

$time=\frac{distance}{speed}$

Time taken by Eugenia when she walked from home to school = x/3 hours

Time taken by Eugenia when she walked from school to home = x/7 hours

Total time taken = x/3+x/7

So forming an equation we have,

$\frac{x}{3}+\frac{x}{7}=0.75$

Taking lcd of 7 and 3 as 21,

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$\frac{10x}{21}=0.75$

10x=15.75

Dividing both sides by 10 , we have

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Answer: So we can say that the distance between Eugenia's house and school is 1.575 miles.

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3 years ago

A data set contains an independent and a dependent variable. Which must be true of the data set if a linear function can be used

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Step-by-step explanation:

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2 years ago