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LiRa [457]
3 years ago
7

Which one is correct?

Mathematics
2 answers:
Maslowich3 years ago
7 0

Answer:

B = 706.5

Step-by-step explanation:

here you are given the diameter you need to First find a radius and radius is half of the diameter which is equal to 30 /2 = 15

Area of the circle is

\pi \: r { }^{2}

3.14× 15×15 = 706.5

jeka943 years ago
5 0

Answer:

The first one (A) is the answer I got!

Step-by-step explanation:

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Write an explicit formula for the arithmetic sequence whose common difference is -18
drek231 [11]

Let the first term be a(0).  Then the formula for a(n) is a(0)-18(n-1).

Check:  What's the first term?  Let n = 1:  a(1) = a(0)-18(1-1) = a(0) (correct)

What's the second term?    Let -n =2:  a(2) = a(0)-18(2-1) = a(0) - 18

and so on.

7 0
3 years ago
Read 2 more answers
A new car depreciates as soon as you drive it out of the parking lot. A certain car depreciates to half its original value in 4
Alexandra [31]

Answer:

Original price of car = $20,000

Step-by-step explanation:

Let the original price of the car be 'x' dollars.

Given:

Here, the depreciation of the car is occuring exponentially as the value depreciates to half in every four years.

Worth of car after 8 years = $5000

Value after depreciation in 4 years = Half of original value = \frac{x}{2}

So, value of car after depreciation in another 4 years = Half of the value after 4 years = \frac{1}{2}(\frac{x}{2})=\frac{x}{4}

Therefore, final depreciated value after 8 years is \frac{x}{4}.

But, as per question, final depreciated value is $5000. Thus,

\frac{x}{4}=5000\\x=5000\times 4\\x=20000

Therefore, the original price of the car was $20,000.

3 0
3 years ago
Fresh Express
kolbaska11 [484]

Answer: £245

Step-by-step explanation:

24.5 hours from wednesday to saturday

24.5 X 10 = 245

4 0
3 years ago
This equation has one soulution 5(x-1)+3x=7(x+1) what is the soulution
Aloiza [94]

Answer:

X=6

Step-by-step explanation:

5(x-1)+3x=7(x+1)

5x-5+3x=7x+1

8x-5=7x+1

8x-7x=1+5

X=6

So the answer is X=6

7 0
3 years ago
How can credit cards be safer than cash? a. It is harder to lose a single credit card than a large number of bills. b. A credit
konstantin123 [22]

Answer: Due to its anonymous nature, if you lose your cash, it's gone. Payment cards can be cancelled and replaced swiftly and remotely. Whilst cash may offer you complete anonymity from data thieves, EMV chip enabled cards offer a more thorough form of payment authentication, providing an extra layer of payment security

So, therefore, C.

3 0
3 years ago
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