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rjkz [21]
3 years ago
9

PLEASE HELP FREE 30 POINTS IF YOU ANSWER What is 21 1/4% expressed as a fraction?

Mathematics
2 answers:
timofeeve [1]3 years ago
6 0

Answer: 17/80

Hope this helps

rusak2 [61]3 years ago
5 0

Answer:

17/80

Step-by-step explanation:

change 21 1/4 to a fraction

2125/10000 and simplfy

425/2000

85/400

17/80

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Solve the equation 3=4-5\root(3)(x^(8))
Anna35 [415]

Answer:

There is no values of x that make the equation true.

Step-by-step explanation:

I might be wrong but I found no solutions for this.

7 0
3 years ago
Read 2 more answers
A sequence of 7 numbers starts with 8. The second number in the sequence is unknown and may be positive or negative. The third t
scoray [572]

Answer:

4

Explanation:

a_1=8,a_7=0

Since the third term is the sum of the two previous terms

a_3=a_2+a_1

a_7=a_6+a_5

a_7=a_5+a_4+a_4+a_3

Continuing in like manner

a_7=5a_3+3a_2

Since a_3=a_2+a_1

a_7=5(a_2+a_1+3a_2

a_7=5a_2+5a_1+3a_2

a_7=8a_2+5a_1

Recall: a_1=8,a_7=0

0=8a_2+5*8

8a_2=-40

a_2=-5

The sequence is therefore:

8,-5,3,-2,1,-1,0

The sum of the seven numbers is 4.

8 0
3 years ago
What are undefined terms that can be used to define other terms
sashaice [31]
Point, line and plane
4 0
3 years ago
(Photo attached) Trig question. Thanks in advance! :)
kolbaska11 [484]

Answer:

  a) cos(α+β) ≈ 0.8784

  b) sin(β -α) ≈ -0.2724

Step-by-step explanation:

There are a couple of ways to go at these. One is to use the sum and difference formulas for the cosine and sine functions. To do that, you need to find the sine for the angle whose cosine is given, and vice versa.

Another approach is to use the inverse trig functions to find the angles α and β, then combine those angles and find find the desired function of the combination.

For the first problem, we'll do it the first way:

  sin(α) = √(1 -cos²(α)) = √(1 -.926²) = √0.142524 ≈ 0.377524

  cos(β) = √(1 -sin²(β)) = √(1 -.111²) ≈ 0.993820

__

a) cos(α+β) = cos(α)cos(β) -sin(α)sin(β)

  = 0.926×0.993820 -0.377524×0.111

  cos(α+β) ≈ 0.8784

__

b) sin(β -α) = sin(arcsin(0.111) -arccos(0.926)) ≈ sin(6.3730° -22.1804°)

  = sin(-15.8074°)

  sin(β -α) ≈ -0.2724

4 0
3 years ago
How do I find the symmetry
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Symmetry is the same as the one side of the graph but it is fliped on the X-axis
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