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2 years ago

Why does it make sense in this situation that the

Mathematics

1 answer:

elena-14-01-66 [18.8K]2 years ago

8 0

Answer: the average cost per person is always greater than $630 because of the fee for the tour guide

Step-by-step explanation:

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Translate the phrase into a variable expression: three less than the product of a number and six

CaHeK987 [17]

I think it will be C.

hope its correct !

8 0

2 years ago

Read 2 more answers

5-2.5 , how is this 2.5?

Y_Kistochka [10]

Well 2.5 + 2.5 is 5 so 5 - 2.5 is 2.5

5 0

3 years ago

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An airplane travels 6111 kilometers against the wind in 9 hours and 7911 kilometers with the wind in the same amount of time. Wh

natima [27]

Answer:

Speed of the plane in still air: $779\; {\rm km \cdot h^{-1}}$ .

Windspeed: $100\; {\rm km \cdot h^{-1}}$ .

Step-by-step explanation:

Assume that $x\; {\rm km \cdot h^{-1}}$ is the speed of the plane in still air, and that $y\; {\rm km \cdot h^{-1}}$ is the speed of the wind.

When the plane is travelling against wind, the ground speed of this plane (speed of the plane relative to the ground) would be $(x - y)\; {\rm km \cdot h^{-1}}$ .
When this plane is travelling in the same direction as the wind, the ground speed of this plane would be $(x + y)\; {\rm km \cdot h^{-1}}$ .

The question states that when going against the wind ( $v = (x - y)\; {\rm km \cdot h^{-1}}$ ,) the plane travels $6111\; {\rm km}$ in $9\; {\rm h}$ . Hence, $9\, (x - y) = 6111$ .

Similarly, since the plane travels $7911\; {\rm km}$ in $9\; {\rm h}$ when travelling in the same direction as the wind ( $v = (x + y)\; {\rm km \cdot h^{-1}}$ ,) $9\, (x + y) = 7911$ .

Add the two equations to eliminate $y$ . Subtract the second equation from the first to eliminate $x$ . Solve this system of equations for $x$ and $y$ : $x = 779$ and $y = 100$ .

Hence, the speed of this plane in still air would be $779\; {\rm km \cdot h^{-1}}$ , whereas the speed of the wind would be $100\; {\rm km \cdot h^{-1}}$ .

3 0

1 year ago

Yuk noticed that out of 24 students entering the building at Willowville Elementary School this morning, 8 of them were carrying

nordsb [41]

Answer:

the students that brought a lunch box is 28

Step-by-step explanation:

The computation of the students that brought a lunch box is shown below:

= Entire school students × students that carry a lunch box ÷ entering students

= 84 students × 8 ÷ 24 students

= 28 students

Hence, the students that brought a lunch box is 28

3 0

2 years ago

Convert 0.815 into a fraction in the simplest form. Explain please.

anastassius [24]

Answer:

815/1000=163/200 is the simplest form.

8 0

2 years ago