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3 years ago

What is the diameter of a circle whose radius is 6.45 meters

Mathematics

1 answer:

Vikentia [17]3 years ago

6 0

12.9
Diameter is just the radius times 2

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Alyssa is jogging near Central Park. She runs along 65th Street for about 0.19 miles, then turns right and runs along Central Pa

Kryger [21]

Answer:

Her total run is 0.81 miles.

Step-by-step explanation:

Consider the provided information.

The provided information can be visualized by the figure 1.

The path she covers represent a right angle triangle, where the length of two legs are given as 0.19 and 0.28.

Use the Pythagorean theorem to find the length of missing side.

$a^2+b^2=c^2$

Where, a and b are the legs and c is the hypotenuse of the right angle triangle.

The provided lengths are 0.19 and 0.28.

Now, calculate the missing side.

$(0.19)^2+(0.28)^2=(c)^2$

$0.0361+0.784=(c)^2$

$0.1145=c^2$

$\sqrt{0.1145}=c$

$c\approx{0.34}$

Thus, the total distance is:

0.34 + 0.19 + 0.28 = 0.81

Therefore, her total run is 0.81 miles.

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4 years ago

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30,230,448 in word form

grigory [225]

Thirty million two hundred thirty thousand four hundred forty-eight.

8 0

4 years ago

Why do we use equations in math?

Vilka [71]

Answer:

Why not

Step-by-step explanation:

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3 years ago

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In a 3-digit number, the middle digit is 3 times the last digit and 4 more than the first digit. All the digits are odd and can

Alexeev081 [22]

Answer:

Step-by-step explanation:

This is quite some trial and error question.

Based on the question, the numbers we can use are 1,3,5,7 and 9.

We will start with the middle digit first.

Since the question has stated it is 3 times the last digit, the number has to be in multiples of 3.

So we are left with: 3 and 9.

Then, the question also states the middle digit is 4 more than the first digit. See, its a digit, so the value cannot be less than 1 (odd numbers only and no negative values), so if we subtract 4 to the middle digit to find the first, it should still be a Positive Single numerical value.

3 - 4 = -1

9 - 4 = 5

Therefore, this middle digit is = 9.

Since we know the middle digit = 9

The first digit will be 9 - 4 = 5

The whole value is now 593.

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2 years ago

If f(x) = 7(x - 2) + 4(x + 1), what is f(2)? A. 9 B. 10 C. 12 D. 11

KatRina [158]

Answer:

C) 12

Step-by-step explanation:

These type of questions is basically asking you to replace x with 2. f(x) is the same thing as y = but inside the f(x) is the value of x. So in this case, the numerical value of x is 2. All we need to do is replace x with it's numerical value, 2, and solve the equation.

$y=7(2-2) + 4(2+1)\\y=7(0) + 4(3)\\y = 12$

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3 years ago

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