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alina1380 [7]
3 years ago
13

PLS HELP ASAP! 20 PTS evaluate

Mathematics
1 answer:
alexandr1967 [171]3 years ago
7 0

Answer:

Step-by-step explanation:

Cos^-1(1/2) = 60

To get from a degree to radian, simply multiply by pi then divide by 180. So the final answer is 1/3pi or approximately 1.0472

I hope this helped! :D

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PLEASE HELP ME PLEASE HELP ASAP THANKS (brainlest)
zloy xaker [14]

Answer:

0.999 units

Step-by-step explanation:

D=

\frac{3.14}{\pi}

D=0.9994930426

4 0
3 years ago
Read 2 more answers
Looking up, Felipe see two two hot air balloons in the sky shown. He determines that the lower hot air balloon is 515 meters awa
OlgaM077 [116]

Answer:

281.4

Step-by-step

This is the answer

5 0
2 years ago
3) Prove that there is ann ∈ N such that 0.001 ∉ (0,1/n). (Hint: findsuch an n.)
Greeley [361]

Answer:

10000

Step-by-step explanation:

0.001 = 1/1000

so, we take an n bigger than 1000, let's say 10000, then 1/1000 > 1/10000 and 1/1000 ∉ (0, 1/10000).

6 0
3 years ago
Question 9 (1 point)
Likurg_2 [28]

Answer:

A piece of Jewelry costs $4.5 and a hair accessory costs $1.5.

Step-by-step explanation:

Let the price of a piece of jewelry is $x and that of a piece of hair accessories is $y.

So, from the given conditions we can write two different equations as

5x + 8y = 34.5 ............ (1) and

2x + 16y = 33 ............... (2)

Now, solving the equations (1) and (2) we get

2x + 2(34.5 - 5x) = 33

⇒ 8x = 36

⇒ x = $4.5

Again, from the equation (2) we can write

2(4.5) + 16y = 33

⇒ 16y = 24

⇒ y = $1.5

Therefore, a piece of Jewelry costs $4.5 and a hair accessory costs $1.5. (Answer)

6 0
3 years ago
An amusement park ride has cars that move around a circular track at the rate of 16 revolutions in 20 seconds. To the nearest hu
astraxan [27]

Answer:

5.03\frac{rad}{sec}

Step-by-step explanation:

To find the angular velocity divide the revolutions by the time

so

\frac{16}{20}=0.8\frac{rev}{sec}

Remember that

1\ rev=2\pi \ rad

Convert rev/sec to rad/sec

0.8\frac{rev}{sec}=0.8*(2\pi)=1.6 \pi\frac{rad}{sec}

assume \pi=3.1416

1.6(3.1416)=5.03\frac{rad}{sec}

6 0
4 years ago
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