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saw5 [17]
3 years ago
12

If Josie runs a 25-mile race in 5 hours and Greta runs a 18-mile race in 4 hours. Who runs at a FASTER pace?

Mathematics
2 answers:
Gekata [30.6K]3 years ago
8 0

Josie runs  25 / 5 = 5 mils per hour

Greta 18 / 4 = 4,5 miles per hour

Josie is FASTER

Genrish500 [490]3 years ago
5 0

Answer:

Josie because 25 miles in 5 hours is 5 miles every hour and Greta runs 4.5 miles evry hour

Step-by-step explanation:

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A frame of width a surrounds a 5 by 7 inch photograph. Find the expression that represents the area of the frame in terms of a.
Arada [10]
See diagram
totalarea=totallengtht times totalwidth=(2a+5) times (2a+7)=4a²+24a+35

minus original aera
which is 5 by 7 which is 35

4a²+24a+35-35=4a²+24a


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4 0
3 years ago
In the month of June, the temperature in Johannesburg, South Africa, varies over the day in a periodic way that can be modeled a
Art [367]

Answer:

The answer is "\bold{T = - 7.5 \cos \frac{\pi}{12}( t - 4 )+ 10.5}"

Step-by-step explanation:

Given value:

Temp-maximum=18^{\circ}  

Temp. minimum = 3^{\circ}

It is halfway between 10 am and 10 pm to 4 am.  

The sinus and cosine roles could be used throughout the year to predict fluctuations in climate models. Its type of formula that can be used to model such information is:  

T = A \cos B(t-C) + D, where parameters are A, B , C, D, T is the ° C temperature and t is the time (1-24)

A = amplitude = \frac{(T_{max} - T_{min})}{2}\\\\

                       = \frac{(3 - 18)}{2}\\\\= - \frac{15}{2}\\\\ = -7.5

B = \frac{2 \pi}{24}\\\\

   = \frac{\pi}{12}

C = \text{ units translated to the right}= 4

D = y_{min} + amplitude = units \ translated \ up\\\\

D = 7.5 + 3 = 10.5

Its trigonometric function equation that model temperature T hours after midnight in Johannesburg t.

T = - 7.5 \cos \frac{\pi}{12}( t - 4 )+ 10.5

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4 years ago
Solve for x in the equation x^2+20+100=36
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Sergeu [11.5K]

The answer is 24. You subtract 40 - 16.

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O is the centre of the circle, determine the value of v ​
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Answer:

the angle v =59 degree

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