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Inessa05 [86]
3 years ago
15

Solve 2x + 5 = 17 You may use a flowchart if this will help you

Mathematics
1 answer:
Dafna1 [17]3 years ago
5 0

Answer:

X = 6

Step-by-step explanation:

17 - 5 = 12

12 ÷ 2 = x

12 ÷ 12 = 6

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5) In the figure, triangle ABC is a right triangle at B. If CD = 15, find BC to the nearest tenth.
ycow [4]

Answer:

BC ≈ 4.0

Step-by-step explanation:

∠ DCA = 180° - 70° = 110° ( adjacent angles )

∠ DAC = 180° - (30 + 110)° ← sum of angles in triangle

∠ DAC = 180° - 140° = 40°

Using the Sine rule in Δ ACD to find common side AC

\frac{AC}{sin30} = \frac{15}{sin40} ( cross- multiply )

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AC = \frac{15sin30}{sin40} ≈ 11.668

Using the cosine ratio in right triangle ABC

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11.668 × cos70° = BC , then

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6 0
3 years ago
The weight of a specific type of male monkey is normally distributed with a mean of 15 pounds and a standard deviation of 3 poun
Viktor [21]

Answer:

1.33

Step-by-step explanation:

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z-score = (19-15)/3

z-score = 4/3

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3 years ago
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