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Mrrafil [7]
3 years ago
8

What is the circumference of 4cm

Mathematics
1 answer:
Ivan3 years ago
5 0

Answer:

The formula for the circumference of a circle is C = 2πr or C= πd where r represents length of r and d represent length of diameter. The length of a diameter is 2r which is why C= πd. Using this formula, we know that r= 4cm. Thus, C= 2(4)π = 8π ≈ 25.13 centimeters.

Step-by-step explanation:

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A parabola y=1/2x^2-4x+21 can you help me find the vertex form of this parabola please and thank you :)
ale4655 [162]
Ok 
First factor out the first 2 terms as follows:-

y  = 1/2(x^2 - 8x) + 21

Now complete the square on x^2 - 8x:-

y = 1/2[ (x - 4)^2 - 16] + 21

y = 1/2(x - 4)^2 - 8 + 21

y = 1/2(x - 4)^2 + 13   Answer


3 0
3 years ago
Y is directly proportional to x and y=33 when x=11 write a proportional equation that relates to x and y
Lubov Fominskaja [6]

Answer:

y = 3x or x = 1/3y

Step-by-step explanation:

3 0
3 years ago
A muffin recipe calls for 4 cups of sugar and yelled 36 muffins. It’s Amelia only wants to make 24 muffins, how much sugar will
AysviL [449]
So, 4 cups of sugar is used in ONE muffin.
36 muffins is called yet Amelia will do 24.

Instead of multiplying 36, you will multiply 24 by 4.

24 × 4 = 96

She will need 96 cups of sugar to make 24 muffins.
7 0
3 years ago
Indicate a general rule for the nth term of this sequence. -6b, -3b, 0b, 3b, 6b. . .
SOVA2 [1]

The general rule for the nth term of the sequence is a(n)=-6b+(n-1)(3b)

Explanation:

The sequence is -6b, -3b, 0b, 3b, 6b, .....

To find the nth term of the sequence, we need to find the common difference and the first term of the sequence.

First term of the sequence = -6b

Common difference = -3b-(-6b)=-3b+6b=3b

Using this the nth term of the sequence can be determined.

Since, this is an arithmetic sequence, the general form of AP is given by the formula,

a(n)=a+(n-1)d

where a denotes the first term of the sequence and d denotes the common difference. Thus, a=-6b and d=3b

Substituting the values in the general formula, we get,

a(n)=-6b+(n-1)(3b)

Thus, the general rule for the nth term of the sequence is a(n)=-6b+(n-1)(3b)

8 0
3 years ago
HELP HELP HELP HELP HELP HELP PLZZ<br> SOMEONE
velikii [3]

Answer:

B.) 4.18 square inches

Step-by-step explanation:

Find the area of the one right triangle and multiply it by two. The formula for the area of a triangle is:

A=\frac{1}{2} bh

Insert the values. 1.1 is the base and 3.8 is the height:

A=\frac{1}{2} *1.1*3.8

Simplify:

A=\frac{1*1.1*3.8}{2} \\\\A=\frac{4.18}{2} \\\\A=2.09

Multiply the area of one triangle by two:

2.09*2=4.18\\\\A=4.18

The total area of the shaded figures is 4.18 in^2

:Done

8 0
3 years ago
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