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2 years ago

9

Elise randomly surveyed students at her school to find out their favorite music. The table shows the results of Elise's survey.

If there are 400 students at Elise's school, how many can she predict will like pop music the best?

1 answer:

MaRussiya [10]2 years ago

8 0

Answer:

Umm 125 I guess

Step-by-step explanation:

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Find area of blue shaded region

RUDIKE [14]

Answer:

$\approx \: 7.33 \: {cm}^{2}$

Step-by-step explanation:

Area of the blue shaded region

$= \frac{ \theta}{360 \degree} \times \pi r_1^2 - \frac{ \theta}{360 \degree} \times \pi r_2^2 \\ \\ = \frac{ \pi\theta}{360 \degree} ( r_1^2 - r_2^2) \\ \\ ( r_1 = 4 \: cm, \: \: r_2 = 3\: cm, \: \: \theta = 120 \degree) \\ \\ = \frac{ 3.14 \times 120 \degree}{360 \degree} ( 4^2 - 3^2) \\ \\ = \frac{ 3.14 }{3} \times 7 \\ \\ = \frac{21.98}{3} \\ \\ = 7.32666667 \\ \\ \approx \: 7.33 \: {cm}^{2}$

8 0

2 years ago

Teresa drew a quadrilateral that had 4 sides of equal length and no right angels. What shape did she draw

Zolol [24]

Teresa drew a rhombus!

5 0

2 years ago

7k=77 solve the equation check your soulution

SOVA2 [1]

You just divide both sides by 7:

7k/7 = 77/7

k = 77/7

k = 11

Final answer: k = 11

6 0

3 years ago

Three vertices of a rectangle are located at points (−3, 4), (5, −6), and (5, 4). Where is the fourth vertex located?

Natasha2012 [34]

Answer:

(-3, -6)

Step-by-step explanation:

7 0

2 years ago

A scientist makes an acid solution by adding drops of acid to 1.2 L of water. The final volume of the acid solution is 1.202 L.

laila [671]

Answer:

40 drops

Approximately 0.166 %

Step-by-step explanation:

It would be easier to work the same units for volume

Since there are 1000 ml in a liter

Original water volume 1.2 L = 1.2 x 1000 = 1200 mLl

The final volume of the acid-water solution = 1.202 L = 1202 mL

So total volume of acid added = 1202-1200 = 2 mL

Each drop of acid is 0.05 mL

Number of drops added = 2/.05 = 40 drops

Percent of acid in acid solution = (Volume of acid added)/(Final volume) x 100 = (2/1202) ≈ 0.00166 x 100 ≈ 0.166 %

7 0

1 year ago