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nydimaria [60]
3 years ago
7

Please help, im confused

Mathematics
1 answer:
elixir [45]3 years ago
8 0
It look like that. 
Diameter = 2 so the radius = 1/2 * diameter = 1in

Volume of the cylinder =  pi r^2 h 

where h = height of the cylinder = 9 in

so volume = pi * 1^2 * 9  =  28.27 in^2  to nearest hundredth
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What is a solution for both equations y=x+3 and -2x+y=1
Soloha48 [4]

Answer:

(2, 5)

Step-by-step explanation:

Given the 2 equations

y = x + 3 → (1)

- 2x + y = 1 → (2)

Substitute y = x + 3 into (2)

- 2x + x + 3 = 1

- x + 3 = 1 ( subtract 3 from both sides )

- x = - 2 ( multiply both sides by - 1 )

x = 2

Substitute x = 2 into (1) for corresponding value of y

y = 2 + 3 = 5

Solution is (2, 5)

6 0
3 years ago
Read 2 more answers
If you invest $823 at an interest rate of 3% every 6 months, how much money will you have after 9 years
zubka84 [21]

Answer:

Step-by-step explanation:

The compounding formula for this is

A(t)=P(1+\frac{r}{n})^{nt} where A(t) is the amount after all the compounding is done, P is the initial investment, r is the interest rate as a decimal, n is the number of times the interest compounds per year, and t is the time in years.  For us, our n is 2, since the money compounds every 6 months, and 6 months goes into 1 year 2 times.  Our formula then is:

A(t)=823(1+\frac{.03}{2})^{(2)(9)} which simplifies a bit to

A(t)=823(1+.06)^{18} which simplifies a bit more to

A(t)=823(1.06)^{18}

Raise 1.06 to the power of 18 and then multiply the 2 numbers together:

A(t) = 823(2.854339153) so

A(t) = 2349.12

7 0
3 years ago
Use what you know about the angle sum theorem for triangles and your algebra skills to solve for x and find the measure of all t
melomori [17]

Answer:

2x° = 45°, 3x° = 67.5°

Step-by-step explanation:

Sum of angles in a triangle = 180°

2x+3x+3x=180°

8x=180°

x=22.5°

2x=22.5°x2=45°

3x=22.5°x3=67.5°

8 0
3 years ago
A dog is leashed to a point in the center of a large yard. If the leash is 18.8 feet long, what is the total area of the region
Orlov [11]

Answer:

<u>1109.8 square feet</u>

Step-by-step explanation:

In this case, assume the leash to be the radius of the circular yard.

<u>Area</u>

  • πr²
  • 3.14 x (18.8)²
  • 3.14 x 353.44
  • <u>1109.8 square feet</u>
5 0
3 years ago
On a map 3 inches represent and actual distance of 42 miles if the actual distance between two cities is 322 miles how many inch
Artyom0805 [142]

Answer:

if 3 inches on a map = 42miles

then x = 322miles

cross multiply

3inches by 322 = xby42miles

966inchesmiles = 42xinchesmiles

divide both sides by 42miles

xinchees = 23

therefore 322miles distance will take 23inches on a map

4 0
3 years ago
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