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Art [367]
3 years ago
6

Help me 20 points!!! 7th-grade math.

Mathematics
1 answer:
fiasKO [112]3 years ago
5 0

Answer:

the answer is 0.7+1.8h

Step-by-step explanation:

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At 3pm, the length of the shadow of a thin vertical pole standing on level ground is the same as the height of the pole. A while
aliya0001 [1]

Answer: The height of the pole is 175.97 ( approx )

Step-by-step explanation:

Let the height of the pole is x cm,

Also, let the angle of elevation of the sun to the pole at 3 pm is \theta

Thus, by the question,

tan\theta = \frac{\text{ The height of the pole}}{\text{ The height of the shadow}}

\implies tan\theta = \frac{x}{x}    ( at 3pm the height of shadow = height of the pole)

\implies tan\theta = 1

\implies \theta = 45^{\circ}

Again, according to the question,

When the angle of elevation is   (\theta - 12^{\circ}),

The height of shadow = x + 95,

\implies tan(45-12)^{\circ}=\frac{x}{x+95}

\implies tan 33^{\circ}=\frac{x}{x+95}

\implies tan 33^{\circ}x + 95\times tan33^{\circ}=x

\implies tan 33^{\circ}x - x = - 95\times tan33^{\circ}

\implies -0.3505924068 x = - 61.6937213538

x=175.969930202\approx 175.97\text{ cm}

4 0
3 years ago
If the range of the coordinate transformation f(x,y) = (x – 5, y – 3) is (-6,-6) and (2,-3).
lina2011 [118]

Answer:

(-2,1),(-1,2),(-3,5/3)

Step-by-step explanation:

6 0
2 years ago
The bus will leave in 7 minutes. what time will it leave?
hjlf

Answer:

1:52

Step-by-step explanation:

The clock reads 1:45 so simply add 7 minutes to that

3 0
2 years ago
Read 2 more answers
10) Find the area of a circle that has the<br> circumference of 117 cm. Leave it as it.
garik1379 [7]

Step-by-step explanation:

Using the formulas

A

=

π

r

2

C

=

2

π

r

Solving for

A

A

=

C

2

4

π

=

117

2

4

·

π

≈

1089.33601

cm²

A

≈

1089.34

cm²

8 0
3 years ago
Last week, Franklin worked 11 hours each day, Monday-Thursday. On Saturday, Franklin’s boss offered him double time to work 6 ho
NeTakaya

Answer:

$560

Step-by-step explanation:

11 hours 4 days= 44 hours.

$10 an hour for these 44=$440

Satuday, he makes $20 for 6 hours, which=$120.

All together, Franklin makes $560 in the week.

4 0
3 years ago
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