how much of an increase in wave amplitude is seen from an earthquake measuring 5.4 on the Richter scale compares to the one meas
2 answers:
Answer:
The increase in wave amplitude is 1 unit.
Step-by-step explanation:
Given : In wave amplitude is seen from an earthquake measuring 5.4 on the Richter scale compares to the one measuring 4.4.
To find : How much of an increase in wave amplitude ?
Solution :
Richter scale compares to the one measuring 4.4 unit.
In wave amplitude, an earthquake measuring 5.4 unit.
Increase in measuring is higher value subtracting lower value.
Therefore, The increase in wave amplitude is 1 unit.
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Answer:
The approximated length of EF is 2.2 units ⇒ A
Step-by-step explanation:
<em>The tangent ratio in the right triangle is the ratio between the opposite side to the adjacent side of one of the acute angle in the triangle</em>
In the given figure
∵ The triangle DFE has a right angle F
∵ The opposite side to angle D is EF
∵ The adjacent side to angle D is DF
→ By using the tangent ratio above
∴ tan(∠D) =
∵ DF = 6 units
∵ m∠D = 20°
→ Substitute then in the ratio above
∴ tan(20°) =
→ Multiply both sides by 6
∴ 6 tan(20°) = EF
∴ 2.183821406 = EF
→ Approximate it to the nearest tenth
∴ 2.2 = EF
∴ The approximated length of EF is 2.2 units