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3 years ago

How do you find the area of the circle?

Mathematics

2 answers:

lesantik [10]3 years ago

8 0

Because is is a semicircle you do the same thing as you did with the rectangle but then divide by 2 or you can follow this formula
A=pi·r·r. (Area=3.14×radius×radius)
A=pi·r2. (Area=3.14×radius squared)

Lena [83]3 years ago

3 0

It’s a semicircle, so it would be 1/2 pi r^2.

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<img src="https://tex.z-dn.net/?f=5x%20-%20y%20%3D%206" id="TexFormula1" title="5x - y = 6" alt="5x - y = 6" align="absmiddle" c

kipiarov [429]

Answer:

x = y/5 + 6/5

Step-by-step explanation:

Solve for x:

5 x - y = 6

Add y to both sides:

5 x = y + 6

Divide both sides by 5:

Answer: x = y/5 + 6/5

7 0

3 years ago

If f(x) and f–1(x) are inverse functions of each other and f(x)=2x+5, what is f–1(8)?

yarga [219]

f(x)=2x+5

first find inverse

write it without f(x)

y = 2x + 5

x = 2y + 5 swap the variables, now solve for y

- 5 -5

x - 5 = 2y

/2 /2 divide both sides by 2

(x-5)/2 = y

so f-1(x) = (x-5)/2

f-1(8) = (8-5)/2

= (3)/2

f-1(8) = 3/2

6 0

3 years ago

Read 2 more answers

Answer below please!

poizon [28]

Answer:

$x=-\frac{11}{18}$

Step-by-step explanation:

$-1\frac{7}{9}=(-2\frac{5}{6} + \frac{1}{3})x$

Solve parenthesis first

$-2\frac{5}{6} + 1/3$

Find a common denominator.

The common denominator would be 6.

Because the first expression already has a denominator of 6 it stays the same.

$\frac{1}{3} = \frac{2}{6}$

$-2\frac{5}{6} + \frac{2}{6} = -2\frac{7}{6} = -1\frac{1}{6}$

Put that into the original equation.

$-1\frac{7}{9}=(-1\frac{1}{6} )x$

Isolate the x. Add $1\frac{1}{6}$ to each side.

$-1\frac{7}{9}+ 1\frac{1}{6}=x$

Find a common denominator.

we can use 18 as the common denominator.

$-1\frac{7}{9}+ 1\frac{1}{6}= -1 \frac{14}{18} +1\frac{3}{18}= x$

Add.

$-\frac{11}{18} =x$

We cannot simplify so our answer stays the same.

6 0

2 years ago

The usual price of a sweatshirt is 18$, what is its sale price

german

Answer:

$19.08

Step-by-step explanation:

18 + 6% = (18 x 1.06) = 19.08

8 0

3 years ago

Suzanne can read 1 page in 4 minutes. How many pages can she read in 5 hours?

Gelneren [198K]

Answer:

75 pages

Step-by-step explanation:

6 0

3 years ago