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Valentin [98]
3 years ago
9

An engineer is standing 10 meters away from a building. When she looks up at the top of the building, she measures the angle fro

m the ground to the top of the building to be 60. What is the height of the building (as a decimal)?
Mathematics
1 answer:
icang [17]3 years ago
4 0

Answer:

Step-by-step explanation:

If the height of the building is x

Tan 60°= x/10

1.732 x 10 =x

Height of the building is = 17.32m

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X+y=3<br> y+x= 5<br><br> help please
Oksana_A [137]
Solve by elimination ie eliminate x or y from the equations by performing operations on them.
first label the equations , to follow the process.
x - y = 5 ----------------(1)
x+ y = 3 ----------------(2)
If (1) and (2) are added then y will be eliminated.
(1) + (2) gives : 2x = 8 → x = 4
now substitute this value of x into either of the 2 equations and solve for y.
let x = 4 in (1) : 4 - y = 5 → -y = 1 → y = -1
check in (1) : 4-(-1) = 4+1 = 5
check in(2) : 4 - 1 = 3


So your answer is x = 4 , y = -1
8 0
3 years ago
2x - 24 Simplify completely 8 X - 24 4 O x-12. 4 O 2x - 3 Ox-3​
Nostrana [21]

Answer:

\frac{x - 12}{4}

Step-by-step explanation:

Given

\frac{2x - 24}{8}

Required

Simplify completely

\frac{2x - 24}{8}

Expand

\frac{2*x - 2*12}{2*4}

Factorize the numerator

\frac{2(x - 12)}{2*4}

Divide the numerator and denominator by 2

\frac{(x - 12)}{4}

Remove brackets

\frac{x - 12}{4}

<em></em>

<em>The expression has been completely simplified</em>

8 0
3 years ago
If Machine A makes a yo-yo every five minutes and Machine B takes ten minutes to make a yo-yo, how many hours would it take them
agasfer [191]

Answer:

1 hour 10 mins

Step-by-step explanation:

3 every 10 mins

20/3 = 6 r 2

(6 2/3) x 10

5 0
3 years ago
Read 2 more answers
Mike who has 6 video games has half as many games as paul
Roman55 [17]
If Mike has half as many games as Paul, then multiply 6 * 2 to get the number of games that Paul has.

6 * 2 = 12

Paul has 12 games.
6 0
3 years ago
Read 2 more answers
Please anyone help me Several friends went out
Andrew [12]
<h3><u>Explan</u><u>ation</u><u>:</u></h3>

Sharon offered to pay 1/3 of the total cost.

Total cost = $46

1/3 of $46 = \frac{1}{3}  \times 46 = 15.33 \: (approx.)

<h2><u>Answer</u><u>:</u></h2>

Sharon paid $15.33

5 0
3 years ago
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