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Karo-lina-s [1.5K]
3 years ago
15

A gray whale traveled 152 kilometers in one day. The whale swam between 7 and 8 kilometers each hour. About how many hours did i

t take the whale to swim the distance? Show two different ways that you can compatible to find the answer. Then solve.
Mathematics
2 answers:
Nataly [62]3 years ago
4 0
152/7=21.714 hrs
152/8=19
It took the whale between 19 and 21.7 hours to swim 152 kilometers
☺☺☺☺
7nadin3 [17]3 years ago
3 0

Answer:

The whale will take approximately 20.27 hours to travel 152 kilometers.

Step-by-step explanation:

To calculate the hours that the whale take to travel 152 kilometers, we can calculate the hours using both of the speeds and dividing it by the distance, or take an average speed and the divide it by the distance.

The first one is:

\frac{152}{7} =21.71 hours\\\frac{152}{8} =19.00hours

So the whale will take between 19 and 21.71 hours to travel 152 kilometers.

The second one:

\frac{8+7}{2} =7.50\\\frac{152}{7.50}=20.27hours

So the whale will take approximately 20.27 hours to travel 152 kilometers.

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Can someone please help me with this!!!
Volgvan

Step-by-step explanation:

I am not fully sure what your teacher is aiming for. it friends very much on what you were just discussing in class (which I don't know).

but the first thing coming to mind is a minus sign ("-"). squaring a negative number removed the minus and makes the result equal to squaring the same positive number.

just for the undoing the 1/2 :

that is, because a fraction as exponent specifies in its denominator the root to be calculated for the basic value or expression.

so, 1/2 means square root. and yes, square is the inverse function of a square root, and it "undoes" the square root.

in exponent calculation it just means that for exponent 1 to the power of exponent 2 we simply multiply both exponents. and so, 1/2 × 2 = 1

FYI - the numerator still represents an original "to the power of" operation.

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3 years ago
How many yards off the line of scrimmage does the pass rusher need to line up?
stich3 [128]

The pass rusher, which is typically line up on the line of scrimmage.

Have a Great Day :)

3 0
3 years ago
One fourth of a box of cereal was shared equally among 3 people. How much cereal did each person get? Explain how you got your a
Mila [183]
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3 years ago
The formula F = 1.8C + 32 gives the temperature in degrees Fahrenheit (F) for a given temperature in degrees Celsius (C). There
11Alexandr11 [23.1K]

Answer:

-40 °F = -40 °C

Step-by-step explanation:

(1) F = 1.8 C + 32

If the Fahrenheit and Celsius temperatures are the same, then

(2)        F = C     Substitute (2) into (1)

            C = 1.8C + 32     Subtract 1.8 C from each side

C – 1.8 C = 32                   Combine like terms

    -0.8C = 32                   Divide each side by -0.8

          C = -32/0.8

(3)      C = -40                  Substitute (3) into (1)

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The thermometer below shows that -40 °F = -40 °C.

7 0
3 years ago
A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 48.0 and 58.
Yanka [14]

Answer: 0.025

Step-by-step explanation:

Given : A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between the interval [48.0 minutes, 58.0 minutes].

The probability density function :-

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Now, the probability that a given class period runs between 50.25 and 50.5 minutes is given by :-

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Hence, the probability that a given class period runs between 50.25 and 50.5 minutes =0.025

Similarly , the probability of selecting a class that runs between 50.25 and 50.5 minutes = 0.025

5 0
3 years ago
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