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2 years ago

Need help on geometry TO PASS My Class so can you help please

Mathematics

2 answers:

sveticcg [70]2 years ago

8 0

Since it's a equilateral triangle.

$\\ \sf\longmapsto 5x+5x+5x=180$

$\\ \sf\longmapsto 15x=180$

$\\ \sf\longmapsto x=12$

m<S=5x=60°

gogolik [260]2 years ago

6 0

Answer:

x=12

Step-by-step explanation:

since it is an equilateral triangle the angle r all the same the angle have to equal 60

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

Read more about probabilities at:

brainly.com/question/7965468

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3 years ago

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Aleksandr-060686 [28]

Answer:

a. L.B. = 20.5

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Step-by-step explanation:

Length is measured 21 cm correct to 2 significant figures

a. Lower bound of 21

= 20.5 < 21

= 20.5

b. Upper bound of 21

= 21 < 21.5

= 21.5

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3 years ago

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Ivenika [448]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers