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3 years ago

How do you do the bottom portion of this? It’s my younger sister’s homework . I’m a sophomore and have no idea how to do it!

Mathematics

1 answer:

soldi70 [24.7K]3 years ago

6 0

Hello!

Looking at how you set up the proportion, it is correct.

Although, the multiplication is incorrect.

You are supposed to multiply 68 by 25 which comes out to 1700. Then, you should divide it by 100 to get x = 17.

$\frac{x}{25} = \frac{68}{100}$

$100x = 68 * 25$

$100x = 1700$ (divide both sides by 100)

$x=17$

Therefore, you should expect Sparky to catch it 17 times.

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Help me please this is so hard

maxonik [38]

Answer: D. 136in^2

Step-by-step explanation:

Find the surface area if all sides and add

4*10=40

2*4=8

4*10=40

2*10=20

40+40+8+8+20+20=136

136in^2

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2 years ago

Benny brought five new baseball trading cards to add to his collection. the next day his dog ate half of his collection. there a

VMariaS [17]

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2 years ago

Read 2 more answers

Convert degree into Radian that is 18 degree 12'

kiruha [24]

Answer:

$\frac{\pi }{10}$ radians

Step-by-step explanation:

To convert degrees into radians, multiply the degrees with $\frac{\pi}{180}$ .

If you have 18 degrees:

$18*\frac{\pi}{180} = \frac{\pi }{10}$

4 0

2 years ago

There are 10 pens in a box. There are x red pens in the box. All the other pens are blue. Jack takes at random two pens from the

expeople1 [14]

The probability that one of each color is selected is $\frac{10x - x^2}{45}$

<h3>Probabilities</h3>

The probability of an event is the chances of the said event

The given parameters are:

Total = 10
Red = x
Blue = 10 - x

<h3>Calculating the required probability</h3>

The probability that one of each color is selected is calculated as follows:

$P = P(Blue) \times P(Red) + P(Red) \times P(Blue)$

So, we have:

$P = \frac{10 - x}{10} \times \frac{x}{9} + \frac{x}{10} \times \frac{10 - x}{9}$

This gives

$P = \frac{x(10 - x)}{90} +\frac{x(10 - x)}{90}$

Take LCM

$P = \frac{2x(10 - x)}{90}$

Simplify the above expression

$P = \frac{x(10 - x)}{45}$

Expand

$P = \frac{10x - x^2}{45}$

Hence, the probability that one of each color is selected is $P = \frac{10x - x^2}{45}$