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Mila [183]
2 years ago
10

I Need Help! Please!

Mathematics
1 answer:
GalinKa [24]2 years ago
6 0

Answer:

its 10.5

Step-by-step explanation:

If you divide what alex earned by his total sales, you get 10.5%.

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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
Join me at zoom for class 6-8<br> meeting code: 6950502564<br> password: 068658
kirill [66]

Answer:

Why???

Step-by-step explanation:

6 0
3 years ago
Answer as soon as possible please !
creativ13 [48]

Answer:

60

Step-by-step explanation:

4/3 = x/45

45/3=15

15*4=60

x=60

4 0
3 years ago
How many 1/4 inch cubes does it take to fill a box with width 3 1/4 inches, length 4 1/2 inches, and height 2 3/4 inches?
Anastaziya [24]
1. 15 2. 18. 3. 11 is right
4 0
3 years ago
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Several students form a circle by standing next to each other. Samantha and Aaron are directly across from each other and are ap
Mariulka [41]

Answer:

24 students

Step-by-step explanation:

Since students on opposite sides of the circle are 30 feet apart, the circumference of the circle is πd≈94.2. Since each student takes up 4 feet of space, 94.2/4=23.55 which we can round to 23 or 24 students.

6 0
3 years ago
Read 2 more answers
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