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3 years ago

What is the perimeter of a semicircle if the diameter is 2

Mathematics

2 answers:

Lelechka [254]3 years ago

5 0

Answer: π+2

Step-by-step explanation:

perimeter of a whole circle is

2πr

r = 1

2π

divide by 2 bc its a semicircle

2π/2 = π

π+diameter

π+2

e-lub [12.9K]3 years ago

4 0

Answer:

Step-by-step explanation:

d = 2

arc length of semicircle = ½×circumference = ½×πd = π

perimeter of semicircle = π + d = π+2

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Find all the square roots of x^2 ≡ 53 (mod 77) by hand. This is my second post. Please explain all the steps how you did this?

sasho [114]

Answer:

Step-by-step explanation:

Given that

$x^2 ≡ 53 (mod 77)$

Right side has values as

53, 53+77, 53+2(77),+....

We have to find one which is a perfect square.

We have from this series 361 is 19 square

Thus $x =19.$

Next is $x^2=900\\x=30$

$x^2=2209\\x=47$ and so on.

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3 years ago

CAN ANYONE PLEASE HELP ME WITH ASAP

olganol [36]

Answer:

2. D $\frac{1}{2}$ inch per hour

3. C $\frac{4}{5}$ km

Eli chose A because he multiply 5 $\frac{3}{5}$ km and 7 days; instead of dividing.

$\frac{28}{5}$ * 7= $\frac{196}{5}$ which is 39 $\frac{1}{5}$

Step-by-step explanation:

2. Divide the inches of rain by hours

12 $\frac{1}{4}$ inches of rain ÷ 25 $\frac{1}{2}$ hours; convert to proper fraction

$\frac{49}{4}$ ÷ $\frac{51}{2}$

$\frac{49}{4}$ * $\frac{2}{51}$ = $\frac{98}{204}$ = $\frac{49}{102}$ which is approximately $\frac{1}{2}$ inch per hour

3. Divide km by days

5 $\frac{3}{5}$ km / 7 days = $\frac{28}{5}$ ÷ 7 = $\frac{28}{5}$ * $\frac{1}{7}$ = $\frac{4}{5}$ km

Eli chose A because he multiply 5 $\frac{3}{5}$ km and 7 days; instead of dividing.

$\frac{28}{5}$ * 7= $\frac{196}{5}$ which is 39 $\frac{1}{5}$

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3 years ago

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What is the slope of the line? Choose 1 answer A) -2 B) 0 C) 1 D) Undefined

gulaghasi [49]

Answer:

Slope of line is -2 I think.

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3 years ago

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dsp73

Answer:

Step-by-step explanation:

2+3+4+5+6=20

20/20=4,000,000

2/20=?

2/20×4,000,000÷20/20=400,000

20/20=4,000,00

3/20

3/20×4000000÷20/20=600,000

20/20=4,000,000

4/20

4/20×4,000,000÷20/20=800,000

20/20=4,000,000

5/20

5/20×4,000,000÷20/20=1,000,000

20/20=4,000,000

6/20

6/20×4,000,000÷20/20= 1,200,000

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3 years ago

A square is inscribed in a circle. Which of the following statements are true? The diagonals are each twice the length of a side

Verdich [7]

Answer:

The first one is false - see below.

Step-by-step explanation:

The diagonals of the square are also diameters of the circle - True.

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3 years ago