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rodikova [14]
3 years ago
5

Plz ASAP you will get brainliest and a lot of points if you jus answer it

Mathematics
2 answers:
Alika [10]3 years ago
6 0

Answer:

1. 452.16

2. 221.5584

3. 36.2984

4. 78.5

Step-by-step explanation:

Plug in each one to the equation to find the area of a circle. Make sure to divide the diameters in half to find radius.

Annette [7]3 years ago
5 0

Answer:

radius 12 units = 452.16 units²

diameter 16.8 units = 221.5584 units²

radius 3.4 units = 36.2984 units²

diameter 10 units = 78.5 units²

Formula for area of circle: \pi r^{2}

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WILL GIVE BRAINIEST, Please help me ASAP, I'm confused, a picture of the worksheet is above.
Black_prince [1.1K]

Answer:

look at the picture

Step-by-step explanation:

for the triangles with lines on the sides, heres what it means:

The dashes on the lines show they are equal in length.

5 0
2 years ago
Read 2 more answers
PLEASE HELP due in a few hours!!
notka56 [123]

Answer:

75 meters²

Step-by-step explanation:

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3 0
3 years ago
A wheelbarrow has a wheel with a diameter of 10 inches. What is the distance, in inches, that the
DIA [1.3K]

Answer:

Step-by-step explanation:

Using the formula for finding the circumference of a circle.

C = 2πr

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radius = diameter/2

radius = 10/2

radius = 5in

C ,= 2(3.14)(5)

C = 20(3.14)

C = 31.4×2

C = 62.8in (for 1 rotation)

For 16 rotations;

C = 16×62.8

C = 1004.8in

The distance covered is 1004.8in

6 0
3 years ago
What is the value of k in the function f(x) = 113 - kx if f(-3) = 121?<br> K =
blsea [12.9K]

your answer will be f(x)=113−kx,f(−3)=121

4 0
3 years ago
What is the completely factored form of f(x)=x^3+4x^2+7x+6?
Reptile [31]

we are given

f(x)=x^3+4x^2+7x+6

We will use rational root theorem to find factors

We can see that

Leading coefficient =1

constant term is 6

so, we will find all possible factors of 6

6=\pm 1,\pm 2,\pm 3,\pm 6

now, we will check each terms

At x=-2:

We can use synthetic division

we get

f(-2)=0

so, x+2 will be factor

and we can write our expression from synthetic division as

f(x)=x^3+4x^2+7x+6=(x+2)(x^2+2x+3)

f(x)=(x+2)(x^2+2x+3)

now, we can find factor of remaining terms

x^2+2x+3=0

we can use quadratic formula

\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}

x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

we can compare our equation with quadratic equation

we get

a=1,b=2,c=3

now, we can plug these values

x=\frac{-2+\sqrt{2^2-4\cdot \:1\cdot \:3}}{2\cdot \:1}

x=-1+\sqrt{2}i

x=\frac{-2-\sqrt{2^2-4\cdot \:1\cdot \:3}}{2\cdot \:1}

x=-1-\sqrt{2}i

so, we get

x=-1+\sqrt{2}i,\:x=-1-\sqrt{2}i

so, we can write factor as

x^2+2x+3=(x-(-1+\sqrt{2}i))(x-(-1-\sqrt{2}i))

so, we get completely factored form as

f(x)=(x+2)(x-(-1+\sqrt{2}i))(x-(-1-\sqrt{2}i))...............Answer


7 0
3 years ago
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