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Art [367]
3 years ago
11

What percent of 7 is 2?

Mathematics
1 answer:
Liono4ka [1.6K]3 years ago
6 0
It is 350% I think, because you are trying to find how many groups of 2 go into 7. So, you have to divide 7 by 2. You get 3.5. 3.5 in percentage form is 350%
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Find the measure of Angle b - ONLY TYPE THE NUMBER (if you write the number with anything else, it will be counted incorrect by
Alina [70]

Answer:

65

Step-by-step explanation:

90 degrees - 25 degrees = 65 degrees

5 0
3 years ago
The measure of angle R is 148° and the measure of angle S is 85°, find the measure of angle T.
Talja [164]

so you have a 148+85+85=318, 360-318=42 is the measure of angle T because all four angles together make 360



8 0
3 years ago
A machine needs 2 of its gears replaced. You find 2 gears, one manufactured 5 years ago and the other manufactured 10 years ago.
andrey2020 [161]
These are independent events so
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3 0
3 years ago
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sasho [114]

Answer:

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Step-by-step explanation:

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3 0
2 years ago
If tan0=-3/4 and 0 is in quadrant IV, cos20= (33/25, -17/25, 32/25, 7/25, 24/25?) and tan20= (24/7, -24/7, 7/25, -7/25, 13/7, -1
Oksana_A [137]

Answer:

  • cos(2θ) = 7/25
  • tan(2θ) = -24/7

Step-by-step explanation:

Sometimes, it is easiest to let a calculator do the work. (See below)

__

The magnitude of the tangent is less than 1, so the reference angle will be less than 45°. Then double the angle will be less than 90°, so will remain in the 4th quadrant, where the cosine is positive and the tangent is negative.

You can also use the identities ...

  cos(2θ) = (1 -tan(θ)²)/(1 +tan(θ)²)

  cos(2θ) = (1 -(-3/4)²)/(1 +(-3/4)²) = ((16-9)/16)/((16+9)/16)

  cos(2θ) = 7/25

__

  tan(2θ) = 2tan(θ)/(1 -tan(θ)²) = 2(-3/4)/((16-9/16) = (-6/4)(16/7)

  tan(2θ) = -24/7

3 0
3 years ago
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