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Ganezh [65]
3 years ago
5

Todd swam his race in 36.795 seconds while Markie swam his race in 39.09 seconds. What was the difference in their times?

Mathematics
1 answer:
ivann1987 [24]3 years ago
6 0

Answer:

2.295 seconds

Step-by-step explanation:

39.09-36.795

=2.295 seconds

PLS GIVE BRAINLIEST

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Answer:

The height of the right trapezoid is   \frac{6}{5+\sqrt{3}}\ units

Step-by-step explanation:

Let

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we know that

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AB=BC=CH=HA=x ---> because is a square

substitute

6=x+x+CD+DH+x

6=3x+CD+DH -----> equation A

<em>In the right triangle CDH</em>

sin(30\°)=\frac{CH}{CD}

sin(30\°)=\frac{1}{2}

so

Remember  that CH=x

\frac{1}{2}=\frac{x}{CD}

CD=2x

tan(30\°)=\frac{CH}{DH}

tan(30\°)=\frac{\sqrt{3}}{3}

so

\frac{\sqrt{3}}{3}=\frac{x}{DH}

DH=x\sqrt{3}

substitute the values in the equation A

6=3x+CD+DH -----> equation A

CD=2x

DH=x\sqrt{3}

6=3x+2x+x\sqrt{3}

6=5x+x\sqrt{3}

6=x[5+\sqrt{3}]

x=\frac{6}{5+\sqrt{3}}\ units

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Which of the following statements about observational studies is true? A census is always preferable to a sample survey since it
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Step-by-step explanation:

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Step-by-step explanation:

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