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brilliants [131]
2 years ago
11

A sphere has a diameter of 4(x + 3) centimeters and a surface area of 7847 square

Mathematics
1 answer:
faust18 [17]2 years ago
6 0

Answer:

4

Step-by-step explanation:

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Find the area of each semicircle. Round to the nearest tenth. Use 3.14 for Pi.
pentagon [3]

Answer:

1. 69.4 / 2 = 34.7

2. 38.5 / 2 = 19.25

3. 201.1 / 2 = 100.55

I got these by caculating the area and dividing it by 2

4 0
2 years ago
If (-1, y) lies on the graph of y=2^2x then y=
zubka84 [21]

Answer:

y is 1/4 when x is -1 if I did interpret your equation right. Please see that I did.

I believe the equation to be y=2^{2x}.  If you meant y=2^2x, please let me know.

Thanks kindly.

Step-by-step explanation:

If (-1,y) lies on the graph of y=2^{2x}, then by substitution we have:

y=2^{2\cdot -1}.  

We just need to simplify to determine y:

y=2^{2 \cdot -1}  

Multiply the 2 and -1:

y=2^{-2}

Use reciprocal rule for exponents to get rid of the negative:

y=\frac{1}{2^2}

2^2 just means 2(2):

y=\frac{1}{2(2)}

y=\frac{1}{4}.

8 0
2 years ago
May u guys help me jus me out 5 ez questions for u guys to help me with
Elena-2011 [213]

Answer:

1. -29/156 2. 38/45 3. 29/45 4. 113/24 or about 4.7 5. 457/1,  914/2,  1371/3

Step-by-step explanation:

3/13 - 5/12 can be simplified to 36/156 - 65/156. Subtract this and you get -29/156  

4/9 + 2/5 can be simplified to 20/45 + 18/45. Add this and you get

38/45

5/8 - 2/9  can be simplified to 45/72 - 16/72. Subtract this and you get

29/45

3 1/2 + 2 5/12 can be first made irrational to 7/2 + 29/24. This can be simplified to 84/24 + 29/24

113/24 or about 4.7

Not sure about the 457, but to convert it, you multiply it by whatever denominator you have. For example

1x457 = 457/1

2x457 = 914/2

And finally 3x457 = 1371/3

3 0
2 years ago
What fraction of a kilometer is 150 cm?
NemiM [27]
3/2000 is the answer 
7 0
3 years ago
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A shipping box is the shape a cube. Each side measures 3c^6d^2 inches. Express the volume of the cube as a monomial?
Maurinko [17]
I hope this helps you

3 0
2 years ago
Read 2 more answers
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