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Serga [27]
3 years ago
12

What is 2 * 3 ^ 2 - 1​

Mathematics
2 answers:
OverLord2011 [107]3 years ago
7 0

Answer:

6 or 17

Step-by-step explanation:

2*3^2-1

2*3^1

2*3=6

___________

2*3^2 = 18

18 - 1 = 17

juin [17]3 years ago
5 0
The answer is 35.
Reasons : 2*3 = 6. 6•6= 36-1= 35.
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3 years ago
A communications tower is supported by two wires, connected at the same point on the ground. One is attached to the tower at D a
viktelen [127]

Answer:

10.99 m

Step-by-step explanation:

✍️What we are basically asked to solve here is to find the distance between C and D.

To find CD, find the length of BC, and BD. Their difference will give us CD.

Thus, BC - BD = CD.

✍️Finding BC using trigonometric ratio formula:

\theta = 30 + 10 = 40

Opposite side = BC = ??

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Thus:

tan(\theta) = \frac{opposite}{adjacent}

Plug in the values

tan(40) = \frac{BC}{42}

Multiply both sides by 42

tan(40) \times 42 = \frac{BC}{42} \times 42

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✍️Finding BD using trigonometric ratio formula:

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Thus:

tan(\theta) = \frac{opposite}{adjacent}

Plug in the values

tan(30) = \frac{BD}{42}

Multiply both sides by 42

tan(30) \times 42 = \frac{BD}{42} \times 42

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BD = 24.25 m

✍️How much below the top of the tower is the shorter one attached:

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3 years ago
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3 years ago
Read 2 more answers
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