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mojhsa [17]
2 years ago
8

Radio waves have the longest wavelength. If a particular radio wave is 1km long with a speed of

Mathematics
1 answer:
Maru [420]2 years ago
4 0

Answer:

30000

Step-by-step explanation:

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3,969 + b^2 = 11,025
ludmilkaskok [199]

Answer:

b=84

Step-by-step explanation:

from your equation, subtract 3969 from each side

you are left with b^2=7056

sqrt b^2 = sqrt 7056

b=84

7 0
3 years ago
Read 2 more answers
A skate ramp is 4.2 meters long. It rises up 1.7 meters. What’s is the angle of elevation to the nearest tenth of a degree?
Kipish [7]
Θ
=
arcsin
(
.7
4.2
)
≈
10
∘
Explanation:
We view the ramp as a right triangle. The hypotenuse is 4.2 and the vertical side .7, which is opposite the angle
θ
we seek.
sin
θ
=
.7
4.2
=
1
6
I'm going to finish the problem but I'll note if we were actually building the ramp we don't need to know the angle; this sine is sufficient.
θ
=
arcsin
(
1
6
)
θ
≈
10
∘
which I think is a pretty steep ramp for a wheelchair.
There will be another inverse sine that is the supplementary angle, around
170
∘
, but we can rule that out as a value for a ramp wedge angle.
4 0
3 years ago
Cot0 + tan0 = sec0csc0
Lelechka [254]

Answer:

??

Step-by-step explanation:

7 0
3 years ago
What is the area of this figure?<br>Enter your answer in the box.<br>8m<br>5 m<br>9m​
Iteru [2.4K]

Answer:

314 feet

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
you plan to go snowboarding this weekend in Pennsylvania. the resort charges $15.75 per hour in addition to a $25 deposit to ren
Ulleksa [173]

Answer:

A. Equation is c=25+15.75x

B. Cost is $88


Step-by-step explanation:

A)

Suppose you rent for x hours and each hour costs $15.75

<u><em>How much would you need to pay?</em></u>

15.75x

Moreover, there is a $25 dollar (fixed) deposit for renting, so that gets added to your payment. All in all, you have to pay 25+15.75x

This is the equation of renting a snowboard for x hours.

Equation is c=25+15.75x

  • Where x is the number of hours you rent the snowboard, and
  • c is the total cost

B)

If you are renting from 8.30 to 12.30, you are basically renting for 4 hours.

To know how much it will cost, you simply plug in 4 into x (in the equation):

c=25+15.75x\\c=25+15.75(4)\\c=88

Cost is $88

6 0
3 years ago
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