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Mekhanik [1.2K]
3 years ago
12

What is the domain for the following function? y=4/x^2+1

Mathematics
2 answers:
zepelin [54]3 years ago
6 0

Answer:

Apex

Step-by-step explanation:

B

Molodets [167]3 years ago
3 0
IM TRYNA GET THIS TOOOOO :(
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Chloe and Libby want to tie Ryan to a bunch of approximately spherical helium balloons of diameter 0.3m. The volume of each ball
dem82 [27]

Answer:  Aproximately 2,525 balloons

Step-by-step explanation:

 1. Find the volume of a balloon with the formula given in the problem, where r is the radius (r=\frac{0.3m}{2}=0.15m), then:

V=4(0.15m)^{3}=0.0135m^{3}

2. Convert the volume from m³ to lliters by multiplying it by 1,000:

V=0.0135m^{3}*1000=13.5L

3. You know that that 1 liter of helium can lift 1 gram and that Ryan weighs 5 stone and 5 pounds. So you must make the following conversions:

1 g=0.0022 lb

From 5 stones to pounds

(5stone)(\frac{14pounds}{1stone})=70pounds=70lbs

4. Then Ryan's weigh is:

5lb+70lb=75lb

5. Then, if 1 liter of helium can lift 0.0022 lb, to lift 75 lb (which is the weight of Ryan) they need:

\frac{75lb*1L}{0.0022lb}=34,090.90L

6. Then, to calculate the aproximated number of balloons they need to make him float (which can call n), you must  divide the liters of helium needed to lift the weight of Ryan by the volume of a balloon, then the result is:

n=\frac{34,090.90L}{13.5L}

n=2,525.25≈2,525 balloons.

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3 years ago
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The answer is (1,3).....
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Solve the equation for x.<br> 42 + 5x = 41
sweet [91]

Answer:

x= -0.2 or -1/5

Step-by-step explanation:

42+5X=41

Subtract 42 from both sides:

42+5X=41

-42           -42

You are left with:

5x=-1

Now divide 5 by both sides to isolate x:

5x= -1

---    ---

5       5

x=-0.2 or -1/5

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