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3 years ago

Brianna ran 6 laps around a circular track with the diameter of 120 feet how far did she run

Mathematics

1 answer:

Flura [38]3 years ago

4 0

Answer:

2261.94671

Step-by-step explanation:

You must first find the circumference of the track. Using 2(pi)r.

Where pi=3.14... and r=radius

you can find the radius by dividing the diameter by 2, 120/2=60

Afterwards you input 60 into the equation. 60*(pi)*2= 376.99111843077515

Using that number you multiply it by 6 because she ran the circumference 6 times. 6*376.99111843077515 = 2261.94671

NOTE: The question may require you to simplify at certain times so answers may vary slightly. EX: pi = 3.14, Circumference = 377

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If the re-expressed regression line is ln y = 8.7 + 0.23x, what is the value of y when x is 12?

Sauron [17]

Answer:

y=11.46

Step-by-step explanation:

$y = 8.7 + 0.23x \\ y = 8.7 + 0.23(12)$

$y = 8.7 + 0.23 \times 12 \\ y = 8.7 + 2.76$

$y = 11.46$

$to \: multiply \: 0.23 \times 12 \\ you \: convert \: the \: decimal$

$= 23 \ \times 12 \div 100 \\ = 276 \div 100$

$= 2.76$

hope I helped

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3 years ago

Simplify -1-5 + 21.

BlackZzzverrR [31]

Answer:

Step-by-step explanation:

-1-5=-6

21-6=15

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4 years ago

What's is the radius of a circle with a circumference of 56.5?

dezoksy [38]

Divide 56.5 by 2 and c what u get

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3 years ago

Read 2 more answers

What is the slope of the line

Fynjy0 [20]

Answer:

Passes through (0,1) and (1,3).

3-1/1-0=2/1=2

The slope of this line is 2

Step-by-step explanation:

4 0

3 years ago

What is the other factor if... <br> 3b² is a factor of 33b³ c² ?<br> need solution please

IRINA_888 [86]

Answer:

11bc²

Step-by-step explanation:

To find the other factor divide 33b³c² by 3b²

$\frac{33b^3c^2}{3b^2}$

= $\frac{33}{3}$ × $\frac{b^3}{b^2}$ × $\frac{c^2}{1}$

= 11bc²

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3 years ago