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TEA [102]
4 years ago
9

Gisele trains 7 days per week for a biathlon. She covers a total of 20 miles cycling and running each day. Gisele cycles a total

of 105 miles each week, and runs a certain number of miles per week. If she cycles the same number of miles each day and runs the same number of miles each day, the equation 1/7(105+r)=20 represents the situation. Which describes the solution, r , to this equation?
Mathematics
2 answers:
vekshin14 years ago
3 0
Let
x-----> <span>total of miles cycling each week
r-----> </span>total of miles running each week

we know that
20*7=140 miles-----> <span>total of miles cycling and running each week
</span>x+r=140-----> equation 1
x=105---->  equation 2

substitute equation 2 in equation 1
[105]+r=140------> divide by 7 both sides----> (1/7)*[105+r]=20

where
105/7----> 15 miles---->  total of miles cycling each day

r=140-105----> r=35---> total of miles running each week
35/7-------> 5 miles---> total of miles running each day

the answer is
r describes the total of miles running each week


vazorg [7]4 years ago
3 0

Answer:

The answer is D

The solution is 35, which represents the number of miles she runs each week.

Step-by-step explanation:

I just took the test

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Answer:

Step-by-step explanation:

Given data

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Since there are only 250 units available;

y=-250+223=-27\\\\maximum \,profit =[892+2(-27)][223+27]\\=838 * 250\\=838\,for\,250\,units

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4 years ago
Find the value of each variable. If you give the decimal value, round to the nearest tenth.
DiKsa [7]

u = 10.4 and v = 12

Solution:

In the given 2 sides of a triangle are 60°, 60°.

Sum of all the angles of a triangle = 180°

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⇒ v = 12

The line drawn from the top angle divides the triangle into two equal parts

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12 ÷ 2 = 6

Using Pythagoras theorem,

\text{Base}^2+\text{Opposite}^2=\text{Hypotenuse}^2

⇒ 6^2+\text{opposite}^2=12^2

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⇒ u = 10.4

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3 years ago
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Minchanka [31]
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I hope I helped :)
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3 years ago
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Fynjy0 [20]

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