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2 years ago

The radius of a circle is 5 ft. Find its circumference in terms of pi

Mathematics

2 answers:

Rashid [163]2 years ago

8 0

Answer:

5 x 2 = diameter 10

divide diameter by pi (3.14)

31.4 is answer

pls give brainliest

True [87]2 years ago

8 0

Answer:

10 pi

Step-by-step explanation:

circumference of the circle equals = 2π R = 2*pi* radius

so circumference = 2*5*π = 10π = 10 pi (in terms of pi)

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Which of these systems of linear equations has an infinite number of solutions? 3 x minus 8 y = 21. 6 x minus 16 y = 46. 3 x + 6

DiKsa [7]

The answer is B, 3x + 6y = 22 & 6x +12y = 44.

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3 years ago

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If ΔABC is reflected over the x-axis and vertex B has coordinates (2, 7), what are the coordinates of vertex Bʹ?

Irina-Kira [14]

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3 years ago

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4 years ago

If the diagonal of a square is approximately 12.73, what is the length of its sides?

Alja [10]

Answer:

The length of the sides of the square is 9.0015

Step-by-step explanation:

Given

The diagonal of a square = 12.73

Required

The length of its side

Let the length and the diagonal of the square be represented by L and D, respectively.

So that

D = 12.73

The relationship between the diagonal and the length of a square is given by the Pythagoras theorem as follows:

$D^{2} = L^{2} + L^{2}$

Solving further, we have

$D^{2} = 2L^{2}$

Divide both sides by 2

$\frac{D^{2}}{2} = \frac{2L^{2}}{2}$

$\frac{D^{2}}{2} = L^2$

Take Square root of both sides

$\sqrt{\frac{D^{2}}{2}} = \sqrt{L^2}$

$\sqrt{\frac{D^{2}}{2}} = L$

Reorder

$L = \sqrt{\frac{D^{2}}{2}}$

Now, the value of L can be calculated by substituting 12.73 for D

$L = \sqrt{\frac{12.73^{2}}{2}}$

$L = \sqrt{\frac{162.0529}{2}}$

$L = \sqrt{{81.02645}$

$L = 9.001469325$

$L = 9.0015$ (Approximated)

Hence, the length of the sides of the square is approximately 9.0015

7 0

3 years ago

Which number sentence does the following number line represent?

siniylev [52]

Answer:

Last option: $3+(-7)=-4$

Step-by-step explanation:

The number line can help us to make additions and subtractions.

To add a positive number we need to move the point to the right and to add a negative number we need to move the point to the left.

You can observe in the figure that the point on the number line is moved from 3 to -4, then it is moved 7 places to the left. Therefore, you can express it in the following form:

$3+(-7)$

This is:

$3+(-7)=3-7=-4$

Then the number line represents this number sentence:

$3+(-7)=-4$

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3 years ago