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3 years ago

A car travels at an average speed of 68 miles per hour. How long does it take to travel 255 miles?

1 answer:

4 0

It would take 5 times because if it goes 4 times it would reach 255 miles but if it goes 5 times it will pass the amount.

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Find the median of the baseball batting averages.

Charra [1.4K]

Answer:

0.236

Step-by-step explanation:

First put it in order

0.199, 0.211, 0.225, 0.236, 0.257, 0.264, and 0.283

Then find the middle number

0.236

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3 years ago

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Translate into an expression the sum of 4 and m

jek_recluse [69]

Answer:

Step-by-step explanation:

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3 years ago

Need help with this question

Helen [10]

Answer:

4x+18

Step-by-step explanation:

Length = x+3+x+3

width = x+3-x= 3

perimeter = x+3+x+3+x+3+x+3+3+3=4x+18

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2 years ago

Give the greatest common divisor of $6^3$ and $3^6$.

Lady bird [3.3K]

Answer:

Step-by-step explanation:

Since 3^6 is only divisible by 3 and powers of 3(including 1) the gcd of 3^6 and 6^3 mus be a power of 3 hence we need to find the highest powers of 3 that divide 6^3 and that divide 3^6, which are respectively 3^3 and 3^6, hence, taking the smaller one (since we want it to divide both), our answer is 3^3=27.

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3 years ago

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-2x^2+5x-4=0 , find the discriminant

BaLLatris [955]

Answer:

The discriminant is -7

Step-by-step explanation:

The discriminant of a quadratic function/equation(ax^2+bx+c = 0) is calculated as:

$b^2 -4ac$

Here

b is the co-efficient of x

a is the co-efficient of x^2

and c is the constant

Given equation is:

$-2x^2+5x-4=0$

Here

a = -2

b = 5

c = -4

Putting the values in the formula for discriminant

$= b^2 - 4ac\\= (5)^2 - 4(-2)(-4)\\= 25 - 32\\=-7$

As the discriminant is negative, the equation has no real solution.

Hence,

The discriminant is -7

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2 years ago