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3 years ago

12

4 ∈ {4, 14, 17} is this true or false

1 answer:

Natalija [7]3 years ago

5 0

The symbol "<span>∈" means "belongs to".
This means that a certain element belongs to or is found in the set.

The set given contains three numbers which are 4, 14 and 17.
As you can see, 4 is found in this set, therefore, 4 belongs to this set.

Based on this, the given statement is true.</span>

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The line graph shows the average number of awakenings during the night for men and women of different ages. Use the graph to est

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*see attachment showing the line graph

Answer:

2

Step-by-step explanation:

The red line represents the line for women, while the blue line represents the line for men.

Age 45 is the middle of 40 and 45 on the x-axis.

The average number of awakenings during the night for 45 -year-old men ≈ 5

The average number of awakenings during the night for 45 -year-old women = 3

The difference = 5 - 3 = 2 times during the night.

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2 years ago

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0.84 as a fraction in simplest form

kipiarov [429]

Answer:

21/25

Step-by-step explanation:

82/100 = 21/25

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2 years ago

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Dont answer this question if you dont know the answer

3241004551 [841]

$\huge\boxed{♧ \: \mathfrak{ \underline{Answer} \: ♧}}$

here's the solution,

$\pi = 180$

$\dfrac{\pi}{3} = \dfrac{180}{3}$

$\dfrac{\pi}{3} = 60$

=》

$f( \theta) = \cos( \theta) + 2 \cos( \frac{ \theta}{2} )$

=》

$f(60) = \cos(60) + 2 \cos( \frac{60}{2} )$

=》

$f(60) = \dfrac{1}{2} + 2 \cos(30)$

=》

$f(60) = \dfrac{1}{2} + (2 \times \frac{ \sqrt{3} }{2})$

=》

$f(60) = \dfrac{1}{2} + \sqrt{3}$

=》

$f(60) = \dfrac{1 + 2 \sqrt{3} }{2}$

hence, correct option is C.

6 0

2 years ago

Read 2 more answers

Holly buys a $22 shirt for 20% off. The tax rate in her city is 6.5%. What is the total amount she paid for the shirt? Round to

Digiron [165]

Answer:

$18.74

Step-by-step explanation:

To find the sale price:

22 * 0.2 = 4.4

22 - 4.4 = 17.6

or, you can just multiply by 0.8, so you wont need to subtract later

22 * 0.8 = 17.6

Then, you need to find the tax amount:

17.6 * 6.5 = 1.144

17.6 + 1.144 = 18.744

Round

18.74

6 0

2 years ago