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ehidna [41]
3 years ago
10

I need help on this question

Mathematics
1 answer:
aleksklad [387]3 years ago
8 0

Answer:

Figure G.

Step-by-step explanation:

Let's check through the values and calculate the radius and area for all the circle.

For circle R

Diameter = 2 feet

Radius= 1 feet

Area= πr²

Area= 3.14*1

Area= 3.14 feet²

CircleS

Diameter= 4 feet

Radius= 2 feet

Area= πr²

Area= 3.14*2²

Area= 12.56 feet²

Circle T

Diameter= 8 feet

Radius= 4 feet

Area = π r²

area= 3.14*4²

Area=50.24 feet²

Circle U

Diameter= 12 feet

Radius= 6 feet

Area = π r²

area= 3.14*6²

Area=113.04 feet²

The values of the radius and Area all match the graph in figure G

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How do i solve for x if (x+1)/(x+1)= 1/2​?
madam [21]

Answer:

x= -1

Step-by-step explanation:

Given data

We have the expression as

(x+1)/(x+1)= 1/2​

let us first cross multiply

2(x+1)=(x+1)

2x+2=x+1

collect like terms

2x-x=1-2

x= -1

Hence the value of x=-1

7 0
2 years ago
A car travels to 253 miles in eight hours how far can you travel in seven hours?
slava [35]
<h2><u>DIRECT RULE OF 3</u></h2>

We use a rule of 3 to solve it.

Let's record the data:

253 miles  →  8 hours

‎    x  miles  →  7 hours

‎      

Let's solve:‏‏‎

\mathsf{x = \dfrac{7(253)}{8}}

\mathsf{x = \dfrac{1771}{8}}

\large{\boxed{\mathsf{x = 221,375}}}

‎      ‏‏‎

<h3><u>Answer</u>. The car can travel 221,375 miles in seven hours.</h3>

‎      

8 0
3 years ago
A certain electronics manufacturer found that the average cost C to produce x DVD/Blu- ray players can be found using the equati
NemiM [27]

Answer:

The minimum average cost is $643.75

It should be built 62.5 machines to achieve the minimum average cost

Step-by-step explanation:

The equation that represents the cost C to produce x DVD/BLU-ray players is C = 0.04x² - 5x + 800

To find the minimum cost differentiate C to equate it by 0 to find the average cost per machine and to find the value of the minimum cost

∵ C = 0.04x² - 5x + 800

- Differentiate C with respect to x

∴ \frac{dC}{dx}=0.04(2)x^{2-1}-5(1)x^{1-1}+0

∴ \frac{dC}{dx}=0.08x-5

- Equate \frac{dC}{dx} by 0

∴ 0.08x - 5 = 0

- Add 5 to both sides

∴ 0.08x = 5

- Divide both sides by 0.08

∴ x = 62.5

That means the minimum average cost is at x = 62.5

Substitute the value of x in C to find the minimum average cost

∵ C = 0.04(62.5)² - 5(62.5) + 800

∴ C = 643.75

∵ C is the average cost

∴ The minimum average cost is $643.75

∵ x is the number of the machines

∴ It should be built 62.5 machines to achieve the minimum

   average cost

4 0
3 years ago
If f (x) = -2x^2 + 3 then f (-3) =<br> 1. -15<br> 2. 21<br> 3. 39<br> 4. -18
viva [34]

Answer:

-15

Step-by-step explanation:

put f(-3)=-2*(-3)^2+3

4 0
3 years ago
What is the value of 0 in the number 9,603,450,503
asambeis [7]

Answer:

0

Step-by-step explanation:

0 x 10

0 x 1000

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4 0
2 years ago
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