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Dima020 [189]
3 years ago
10

I am having trouble with this, any help?

Mathematics
2 answers:
nalin [4]3 years ago
7 0

Step-by-step explanation:

Top Right:

Find the angles in the triangle to find y

180-112= 68 - this is the top angle of the triangle

x = must be corresponding to the angle next to 127

so do 180 -127 = 53 = x

180 - (53 + 68) = 59 = y

Katyanochek1 [597]3 years ago
7 0

Answer:

The bottom right

x = 129

180-59 = 129

129 = x (vertically opposite angles)

y = 47

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A police car's siren operates at a frequency of 2,000 Hz. What frequency would a stationary listener observe if the police car i
SpyIntel [72]

we can use formula

f_L=f_s(\frac{v_a-v_p}{v_a+v_p} )

where

fL is listener frequency

fs is siren frequency

va is the speed of sound in air

vs is police car speed

so, we have

f_s=2000Hz

v_a=345m/s

v_p=65mph

now, we can change it into m/s

v_p=65*\frac{1609}{3600}m/s

v_p=29.05139m/s

now, we can plug it

f_L=2000(\frac{345-29.05139}{345+29.05139} )

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3 0
3 years ago
Need help plz Compare using <, >, or =.
jek_recluse [69]
Meanings of inequalities :

< less than
> more than
= equal

convert both fractions to their common denominators , which is 40.

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3 0
3 years ago
1. A given binomial distribution has a mean of 153.1 and a standard deviation of 18.2. Would a value of 187 be considered usual
Triss [41]

Answer:

Usual, because the result is between the minimum and maximum usual values.

Step-by-step explanation:

To identify if the value is usual or unusual we're going to use the Range rule of thumbs which states that most values should lie within 2 standard deviations of the mean. If the value lies outside those limits, we can tell that it's an unusual value.

Therefore:

Maximum usual value: μ + 2σ

Minimum usual value: μ - 2σ

In this case:

μ = 153.1

σ = 18.2

Therefore:

Maximum usual value: 189.5

Minimum usual value: 116.7

Therefore, the value of 187 lies within the limits. Therefore, the correct option is D.  Usual, because the result is between the minimum and maximum usual values.

8 0
3 years ago
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Paladinen [302]

Answer:-9,015.23 i think plz dont come at me if wrong

Step-by-step explanation:

5+5=10/6=1.6*100=166.6/(25+1000=1025)=0.16-3456=-3,455.84*60=-207,350.4/23=-9,015.23

3 0
3 years ago
If two angles are complementary. One angle measures 22 degrees. And the other angle measures 2x degrees, what is the value of x?
levacccp [35]

Answer:

x=34

Step-by-step explanation:

34*2=68

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A complementary angle adds up to 90 degrees.

5 0
3 years ago
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