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kvasek [131]
4 years ago
14

500 jelly beans are in a jar. 20% are red, 2/5 are orange. How many jelly beans are neither red or orange?

Mathematics
1 answer:
neonofarm [45]4 years ago
5 0

Answer:

200 jelly beans

Step-by-step explanation:

2/5 of 500= 200

20% of 500= 100

100+200=300

500-300=200

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y=24x+141

Step-by-step explanation:

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An earthquake was felt throughout a circular area of 1808.64 Square miles what was the radius of the circular area
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Answer:

A

Step-by-step explanation:

The area of a circle is given by the formula:

A=\pi r^2

Where <em>A</em> is the area and <em>r</em> is the radius.

Since we already know the area, we can plug it in and solve for <em>r</em>. Thus:

1808.64=\pi r^2\\

Divide both sides by π. We can use 3.14 as an approximation. The πs on the right cancel out:

1808.64\div(3.14)=r^2\\r^2=576

Take the square root of each side:

\sqrt{r^2}=\sqrt{576}

The squares on the left cancel. The root of 576 is 24:

r=24

Therefore, the radius is 24.

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3 years ago
If you are pocking a number between 1-20 what is the probability that you will pick a number greater than 14 or less than 4?
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3 years ago
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The circumference of a sphere was measured to be 82 cm with a possible error of 0.5 cm. (a) Use differentials to estimate the ma
NeTakaya

Answer:

The Maximum error is  26cm^2

Step-by-step explanation:

Given that the circumference of a sphere was measured to be 82 cm with a possible error of 0.5 cm

<h3>To find :</h3><h3>(a) Use differentials to estimate the maximum error in the calculated surface area. (Round your answer to the nearest integer.) cm^2</h3>

Given circumference of a sphere=82 cm and possible error =0.5 cm

Error of the surface area is dA

Error of circumference is dC = 0.5 cm

We know that the formula for  Circumference of a sphere is C=2πr units  

Differentiating with respect to r

 dC = 2\pi dr

dr =\frac{dC}{2π}

=\frac{0.5}{2\pi} (∵ dC = 0.5 cm)

<h3>Since Area  A = 4\pi r^2 square units</h3>

Differentiating with respect to r

dA = 8\pi rdr  square units

Since given C = 82 cm.and also C=2πr  we have

r=\frac{C}{2π}

=\frac{82}{2π}

r=\frac{41}{π}

From that dA = 8\pi rdr

Substituting the values of r and dr in the above equation we get

dA = 8\pi (\frac{41}{\pi}) (\frac{0.5}{2\pi})

=4(41)\times (\frac{0.5}{3.14})

=26.1146

dA=26cm^2

∴  Maximum error is  26cm^2

4 0
4 years ago
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