I'll give brainliest to whoever answers first CORRECTLY.

Mathematics

1 answer:

Semenov [28]2 years ago

7 0

Answer:

I cant see the numbers clearly

Step-by-step explanation:

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a car can travel 540 miles in the same time it takes a bus to travel 180 miles. if the rate of the bus is 40 miles per hour slow

nadezda [96]

Answer:

$\large \boxed{\text{ Car = 60 mi/h: bus = 20 mi/h}}$

Step-by-step explanation:

A. Car rate

Let c = the car rate

Then c - 40 = bus rate

Distance = rate × time

Time = distance/rate

$\begin{array}{rcll}\dfrac{540}{c} & = & \dfrac{180}{c - 40} & \\\\\dfrac{540(c - 40)}{c} & = & 180 &\text{Multiplied each side by 180 - c}\\\\540(c - 40) & = & 180c & \text{Multiplied each side by c}\\540c - 21600 & = & 180c & \text{Distributed the 540}\\360c -21600 & = & 0 & \text{Subtracted 180c from each side}\\\end{array}\\$

$\begin{array}{rcll}360c & = &21600 &\text{Added 21600 to each side}\\c & = & \dfrac{21600}{360} & \text{Divided each side by 360}\\\\c & = & 60 &\text{Simplified}\\\end{array}\\\text{The average rate of the car is $\large \boxed{\textbf{60 mi/h}}$}$

B. Bus rate

$\text{Bus rate} = c - 40 =60 - 40 = \mathbf{20}\\\text{The average rate of the bus is $\large \boxed{\textbf{20 mi/h}}$}$

Check:

$\begin{array}{rcl}\dfrac{540}{60} & = & \dfrac{180}{20}\\\\9 & = & 9\\\end{array}$

OK.

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3 years ago

Al Dietrich is in training. He swims for 30 minutes, bicycles (10 mph) for 30 minutes, and runs (8 mph) for 30 minutes everyday.

allochka39001 [22]

Answer: 300 calories

Step-by-step explanation: let us assume that moving at any speed expends approximately 100 calories per mile. Moving a less-minute mile will burn a few more calories than moving a high-minute mile because of the added effort. Since the minutes for the 3 scenarios are the Same, then we can conclude that he is burning calorie at the same level in which the total equal to 300 calories

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2 years ago

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Which equation demonstrates the additive identity property?

kramer

It's the first one (7+4i)+(7-4i)=14

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2 years ago

Please help!!<br> Simplify the expression.<br> csc^2x-1/ 1 +sinx

Gekata [30.6K]

Answer:

Step-by-step explanation: