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Sonbull [250]
3 years ago
10

Solving problems with decimal points

Mathematics
1 answer:
vazorg [7]3 years ago
6 0
Answer: what do you need help with

Explanation: you never posted a problem
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Use benchmarks to estimate the sum of 9 1/16 +3 1/16
Leno4ka [110]
12 and 1/8, I just simplified 2/16 to 1/8
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24 POINTS!!!!!!!!!!!!!!!!!
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Help, Help, Please
Lesechka [4]

Answer:

θ = \frac{\pi }{3} (60° )

Step-by-step explanation:

Using the identity

sin²x + cos²x = 1 ⇒ sin²x = 1 - cos²x

Given

cos²θ - sin²θ = 2 - 5cosθ

cos²θ - (1 - cos²θ) = 2 - 5cosθ

cos²θ - 1 + cos²θ = 2 - 5cosθ

2cos²θ - 1 = 2 - 5cosθ ( subtract 2 - 5cosθ from both sides )

2cos²θ + 5cosθ - 3 = 0 ← in standard form

(cosθ + 3)(2cosθ - 1) = 0 ← in factored form

Equate each factor to zero and solve for θ

cosθ + 3 = 0

cosθ = - 3 ← not possible as - 1 ≤ cosθ  ≤ 1

2cosθ - 1 = 0

cosθ = \frac{1}{2} , so

θ = cos^{-1} (\frac{1}{2} ) = \frac{\pi }{3} ( or 60° )

8 0
2 years ago
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Anyone know the answer
photoshop1234 [79]
The answer is B I think not 100%
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3 years ago
Jodie bought some shirts for $6 each.  Marge bought some shirts for $8 each.  The girls spent the same amount of money on shirts
FrozenT [24]

<u><em>Answer:</em></u>

The least amount of money they could have spent is $24


<u><em>Explanation:</em></u>

To get the least amount of money they could have spent, we will need to get the lowest common multiple of both numbers (6 and 8).

This means that we need to find that least number that is found in both multiplication tables


Multiples of 6:

6 * 1 = 6

6 * 2 = 12

6 * 3 = 18

6 * 4 = 24


Multiples of 8:

8 * 1 = 8

8 * 2 = 16

8 * 3 = 24


Noticing the two multiples, we can note that the lowest common multiple is 24.

This means that the lowest amount they could have spent is 24


Hope this helps :)

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3 years ago
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