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mihalych1998 [28]
2 years ago
6

Please help I don't understand!

Mathematics
2 answers:
Vlada [557]2 years ago
5 0
It is 31.6! good luck
dybincka [34]2 years ago
4 0

Answer:

the answer is 31.6

Step-by-step explanation:

hope it helps

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X-y+6; use x=6, and y =1
TEA [102]

Answer:11

Step-by-step explanation:

To evaluate x-y+6 when x=6 y=1

We get

6-1+6

=6+6-1

=11

8 0
3 years ago
Challenge fr y'all. solve this to get 50 points and brainliest coming up if you get the right answer
TEA [102]

Answer:

  • See below

Step-by-step explanation:

a)

i)

<u>Use the law of cosines:</u>

  • AB=\sqrt{PA^2+PB^2-2*PA*PB*cosP}
  • AB=\sqrt{60^2+100^2-2*60*100*cos80} =\sqrt{11516.22} =107.31

ii)

<u>Use the law of sines:</u>

  • sin ∠A / PB = sin ∠P / AB
  • sin ∠A / 100 = sin 80 / 107.31
  • sin ∠A = 100 sin 80 deg / 107.31
  • sin ∠A = 0.92
  • ∠A = arcsin 0.92
  • ∠A = 67° (rounded)

iii)

<u>Bearing of B from A:</u>

  • 90° + (67° - 30°) =
  • 127°

b)

<u>PB is longer distance. Time to reach B:</u>

  • t = d/s
  • t = 100/20 = 5 hours

<u>The speed s of the slower ship:</u>

  • s = d/t
  • s = 60/5 = 12 km/h

3 0
2 years ago
Read 2 more answers
Maria walked 3km west and 4km south. Calculate how far she is from her starting point
mars1129 [50]
12km is the answer hope this heps
6 0
3 years ago
A particle moves on a straight line and has acceleration a(t)=24t+2. Its position at time t=0 is s(0)=3 and its velocity at time
user100 [1]

Answer:

It's position at time t = 5 is 593.

Step-by-step explanation:

The velocity v(t) is the integral of the acceleration a(t)

The position s(t) is the integral of the velocity v(t)

We have that:

The acceleration is:

a(t) = 24t + 2

Velocity:

v(t) = \int {a(t)} \, dt = \int {24t + 2} \, dt = 12t^{2} + 2t + K

K is the initial velocity, that is v(0). Since V(0) = 13, K = 13

Then

v(t) = 12t^{2} + 2t + 13

Position:

s(t) = \int {s(t)} \, dt = \int {12t^{2} + 2t + 13} \, dt = 4t^{3} + t^{2} + 13t + K

Since s(0) = 3

s(t) = 4t^{3} + t^{2} + 13t + 3

What is its position at time t=5?

This is s(5).

s(t) = 4t^{3} + t^{2} + 13t + 3

s(5) = 4*5^{3} + 5^{2} + 13*5 + 3

s(5) = 593

It's position at time t = 5 is 593.

3 0
3 years ago
The radius of a circle is 1 m. Find the circumference to the nearest tenth.
soldier1979 [14.2K]

Answer:

sorry :( I need points :((((((

5 0
3 years ago
Read 2 more answers
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