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3 years ago

Find the area of a circle with a circumference of 3.14 units

Mathematics

1 answer:

Nadusha1986 [10]3 years ago

7 0

ANSWER 0.784602

If the circumference of the circle is equal to 3.14 units, to find the area

The area of a circle can be calculated using the diameter or the radius with two different formulas: A = πr2 or A = π(d/2)2, where π is the mathematical constant approximately equal to 3.14,r is equal to the radius, and d is the diameter.

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Solve for a. c = 8 π a b a. c/8 π=a b. c/8 π b=a c. c/8=a d. 8 π b c = a

frosja888 [35]

$c = 8\pi ab\\a = \frac{c}{8\pi b}$

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3 years ago

The axis of symmetry of the graph of h is x = - 3. which ordered pair represents the additional point on the graph of h?

Tresset [83]

Answer: (1,-5)

Step-by-step explanation:it’s the answer

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3 years ago

Find the time required for an investment of 5000 dollars to grow to 8300 dollars at an interest rate of 7.5

Nutka1998 [239]

Answer:

1.60 (rounded)

Step-by-step explanation:

I haven't done this in a while but you'd use the compound interest formula a=p(1+r)^n where a=8300 p=5000 r=0.075 and solve for n

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2 years ago

Someone please help me

aliina [53]

Answer:

8. Louis

9. Rose; Raymond

Step-by-step explanation:

8. An exponent represents the number of times the base appears as a factor in the product.

We use a coefficient to signify repeated addition: 3x means x+x+x.

We use an exponent to signify repeated multiplication. x³ means x·x·x.

So, the expression ...

$4^2\cdot 4^5\text{ means }(4\cdot4)\cdot(4\cdot4\cdot4\cdot4\cdot4)$

You can see that the factor 4 appears 7 times in the product, so would be represented in exponential form as ...

$4^2\cdot4^5=\boxed{4^7}$

Louis has correctly observed this fact. In general, we see that multiplying powers of the same base causes those powers to be added.

Part A. Rose is correct for the same reason as in problem 8.

5^5 · 5^2 = 5^(5+2) = 5^7

Part B. Raymond is correct. We know that division cancels similar terms from the numerator, so ...

$\dfrac{7^9}{7^5}=\dfrac{7\cdot7\cdot7\cdot7\cdot7\cdot7\cdot7\cdot7\cdot7}{7\cdot7\cdot7\cdot7\cdot7}=7\cdot7\cdot7\cdot7=7^{9-5}=7^4$

The rules of exponents we're using here are ...

(a^b)(a^c) = a^(b+c)

(a^b)/(a^c) = a^(b-c)

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3 years ago

Mr. Thompson is on a diet. He currently weighs 260 pounds. He loses 4 pounds per months. Write a linear model that represents Mr

Elden [556K]

M = number of months.

----------------------------------------------
Current Weight :
----------------------------------------------
Current weight = 260 pounds

----------------------------------------------
1 month:
----------------------------------------------
1 month = 4 pounds

----------------------------------------------
m months:
----------------------------------------------
m months = 4m

--------------------------------------------------------------------------------------------
Weight = 260 - 4m pounds, where m is the number of months
--------------------------------------------------------------------------------------------

7 0

3 years ago