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2 years ago

11

The distance a person can travel varies directly with the time they have been traveling if going at a constant speed. If Phoenix

traveled 78 miles in 1.5 hours while going at a constant speed, how far will he travel in 2 hours at the same speed?

1 answer:

SVEN [57.7K]2 years ago

4 0

Answer:

answer is 175 miles, have a good day <3

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Find the value of a and b if root3-1/root3+1+ root3+1/root3-1=a+root3 b

Digiron [165]

Answer:

a=4 and b = 0

Step-by-step explanation:

Given : $\dfrac{\sqrt 3 -1}{\sqrt 3+1}+\dfrac{\sqrt 3+1}{\sqrt 3-1}=a+\sqrt 3 b$

To find, The value of a and b

Solution,

Solving LHS of the given equation,

$\dfrac{(\sqrt 3-1)^2+(\sqrt3+1)^2}{(\sqrt 3+1)(\sqrt 3-1)}=a+\sqrt 3 b$

Since,

$(a-b)^2=a^2+b^2-2ab\\\\(a+b)^2=a^2+b^2+2ab\\\\(a-b)(a+b)=a^2+b^2$

So,

$\dfrac{3+1-2\sqrt 3+3+1+2\sqrt 3}{3-1}=a+\sqrt 3 b\\\\4=a+\sqrt 3 b$

or

$4+0=a+\sqrt 3 b$

On comparing we get :

a = 4 and b = 0

4 0

3 years ago

A ratio equivalent to 2:5 is 2 :10

azamat

False... a ratio equivalent to 2:5 is 4:10

2/5 × 2/2 = 4/10

8 0

2 years ago

On a newly developed IQ test, an individual scores at the 110 level on the first half of the test, and 150 on the second half of

EastWind [94]

Answer:

Reliability

Step-by-step explanation:

The Reliability of a measurement or observation refers to its repeatability. If you measure or observe the same thing twice, how close are the two measurements or observations?

#The test results 110 1nd 150 are between 27% and 36% depending on which direction you take. That variation is wide apart and the test can't be considered reliable.

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3 years ago

How many days are there in 4 years,that is,3 years and 1 leap year??

____ [38]

I think the answer is 1,096 days

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2 years ago

What is the square root of 539?

Mama L [17]

You would use 539 and square it on you cal. just once. Then once you do that the answer is not going to be a whole number it is going to have a decimal, so the answer would be 23.22.

6 0

2 years ago

Read 2 more answers