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3 years ago

Mrs. Anderson surveyed her class and asked each student, "How many hours do you spend

1 answer:

max2010maxim [7]3 years ago

8 0

Mrs. Anderson surveyed her class and asked each student, "How many hours do you spend
playing sports per week?" The results are below.
0.0.0.0.2.2.3.3.33.44 1,5,5,5,5,5,5,5,5,5,6,6.6.6.6,6,6,6,6,7.7.8.12
Port A: Construct a dot plot of the data and choose the best graph from the choices below.
Part B: What observations can you make about the shape of the distribution
Part C: Are there any values that don't seem to fit? Justify your answer.

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Bentley took a ride on Rudolph’s back. At 8:00 pm, he counted 68 stars. At 10:00 pm, he counted twice as many stars. At 12:00 am

Dennis_Churaev [7]

Answer:

A. 136 stars

B. 340 stars

4 0

3 years ago

Read 2 more answers

What is the measure of angle 6, to the nearest degree? 81° 90 99° 105°

Kaylis [27]

Answer: 99

Step-by-step explanation:

10x-9=9x

-9=-x

x=9

angle 7 = 9*(9)=81

angle 6 = 180-81= 99

NOTE: DO NOT hit 90 because I did that and got it wrong. Just a heads up. Get luck!

6 0

3 years ago

If axb=0, then a=0 or b=0 3x=0

stepladder [879]

Answer:

The given equation is

ax b= 0,

As we see that, it is a linear equation in one variable containing two constant.

So , a≠ 0 [then equation has no meaning.If a=0 , then $0 \times x=0$ , which is meaningless]. ∴ a=0 is incorrect.

Similarly , b≠ 0 [ Reason same as above]. ∴b=0 is incorrect.

⇒3 x=0

⇒x=0 is the correct response.

Let me explain by this giving an example

⇒5 x=0

⇒ x=0 but 5≠0

So, x=0 or 3 x=0 is correct response.

4 0

4 years ago

A trumpet has a length of 140cm. The first valve lowers the root note by two semitones (f1/f0 = 2-2/12) and the second valve low

Alexxandr [17]

Answer:

a. 17.145cm

b. 8.325cm

c. 0.846

d. 2.896

Step-by-step explanation:

It is known that frequency is inversely proportional to length.

Case 1: The player presses only the first valve.

f₁/fo = 2^{-2/12} = lo/l₁

given that lo= 140cm.

l₁ = 2^{2/12}lo = 157.145

change in length:

l₁ - lo = 157.145 - 140 = 17.145cm

Case 2: The player presses only the second valve.

f₂/fo = 2^{-1/12} = lo/l₂

l₂ = 2^{1/12}lo = 148.325cm

l₂ - lo= 148.325-140 = 8.325cm

Case 3: The player presses both the first and second valve.

Change in length is the sum of change in length when they are individually pressed.

l₃ - lo = 17.145+8.325 = 25.47cm

l₃ = 25.47cm+lo = 165.47cm

f₃/fo = 2^{-n/12} = lo/l₃

f₃/fo = 2^{-n/12} = 140/{165.47 = 0.846

2^{-n/12} = 0.846\Rightarrow n/12 = -log(0.846)/log(2) = 0.2413

n = 0.2413*12 = 2.896

5 0

3 years ago

In order to have reflection symmetry, must a polygon have at least two Sides that are the same length?

katen-ka-za [31]

This may help https://www.ck12.org/geometry/Reflection-Symmetry/lesson/Reflection-Symmetry-GEOM-HNRS/ If not wait for somebody else. I hope it does help, though. Good luck! :)

5 0

3 years ago