The speed of Matt is 10 mph.
Doug runs 2 miles an hour faster than Matt, so let Matt’s speed equal x miles per hour. Then Doug’s speed equals x + 2 miles per hour. Each lap is one-quarter of a mile, so Doug runs 1.5 miles in the time it takes Matt to run 1.25 miles.
Rate of Matt is x
Rate of Dough is (x + 2)
Time taken by Matt is 1.25/x
Time taken by Dough is 1.25/(x + 2)
Distance covered by Matt is 1.25
Distance covered by Dough is 1.5
Dough and Matt took the same amount of time from the time Doug started, so make an equation by setting the two times in the chart equal to each other, and then solve for x:
= 
1.5x = 1.25(x + 2)
1.5x = 1.25x + 2.5
0.25x = 2.5
x = 10
So Matt ran at 10 miles per hour.
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Answer:
A
Explanation:
The abundance of oxygen in our atmosphere and the presence of liquid water on the surface of our planet makes our "Pale Blue Dot" stand out in contrast to the other planets in the solar system — a unique and fragile home for life.
<h3>
Answer:</h3>
2CO(g) + O₂(g) → 2CO₂(g)
<h3>
Explanation:</h3>
What is a balanced chemical equation?
- A balanced chemical equation is one that has equal number of atoms of each element involved in the reaction on both side of the equation.
How do we balance chemical equations?
- Balancing chemical equations is a try and error process that involves putting appropriate coefficients on the reactants and products in a chemical reaction.
Why is it important to balance chemical equation?
- Chemical equations are balanced so as to obey the law of conservation of mass.
In this case; the balanced chemical equation for the reaction between carbon monoxide and oxygen gas is given by;
2CO(g) + O₂(g) → 2CO₂(g)
- This is because there are 2 carbon atoms and 4 oxygen atoms on both the reactant and product side.
Answer:
430.
Explanation:
If we know that 0.5 is half of a whole number, then we can simply understand that we need to 215 x 2 to get our answer.
