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Ray Of Light [21]
3 years ago
14

Quadrilateral CDEF is a rhombus. What is ECF?

Mathematics
1 answer:
romanna [79]3 years ago
4 0

Answer:

Step-by-step explanation:

∠ECF=\frac{1}{2}(180-114)=\frac{1}{2}(66)=33°

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Radio signals travel at a rate of 3 × 108 meters per second. How many seconds will it take for a radio signal to travel from a s
blondinia [14]
The time taken for radio signal to the earth's surface we shall proceed as follows;
time=(distance)/(speed)
Distance=7.5×10^6 meters
speed=3×10^8 meters/second
therefore:
Time=(7.5×10^6)/(3×10^8)=0.025 seconds
We conclude that it will take the signal 0.025 seconds to reach the surface of the earth.
3 0
3 years ago
Number of Tickets, X 2 5 10 13 Cost, y $8.50 $21.25 $42.50 $55.25​
brilliants [131]

Answer:

4.25

Step-by-step explanation:

Take your cost and divide it by the number of tickets.

55.25/13 = 4.25

21.25/5 = 4.25

No matter which pair you use, the answer is 4.25

4 0
3 years ago
Hello I need help jsjdbdjdjdjdkdkd
Alexandra [31]

I'll assume the question is: what's the volume?


It's two L×W×H rectangular prisms (aka boxes) put together

The bottom one is 2×3×4

The top one is 5×4×1

Volume = 2×3×4 + 5×4×1 = 24 + 20 = 44

Answer: 44 cubic feet


3 0
3 years ago
PLEASE HELP!!!!! 100 points!!!
BlackZzzverrR [31]

Answer:

  • 26.7 m

Step-by-step explanation:

The 22 degree angle is opposite to the 10 m side of the right triangle.

We need to find the length x of the hypotenuse.

<u>Use trigonometry:</u>

  • sine = opposite/hypotenuse
  • sin 22° = 10/x
  • x = 10 / sin 22°
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6 0
2 years ago
Read 2 more answers
lewis read 35 pages of a novel in 25 minutes. at this rate, determine how many pages he can read in a hour
xenn [34]

Answer:

84 pages per hour.

Step-by-step explanation:

We know that 60 minutes is an hour.

So, what you need to do is divide 60 by 25. (this equals 2.4)

then, all you have to do is multiply 2.4 with 35.

2.4×35=84

so, he'll read 84 pages in an hour.

3 0
3 years ago
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