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Alex
3 years ago
8

a tower casts a 450 ft shadow at the same time that a 4 ft child casts a 6 ft shadow. Write and solve a proportion to find the h

eight of a tower

Mathematics
1 answer:
gavmur [86]3 years ago
7 0
Check the picture below.

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Please explain how to solve for x in the attached photo.
natulia [17]

Answer:

x = 24°

Step-by-step explanation:

the sum of the interior angles in a triangle = 180°

so:

(2x + 5°) + 64° + 3x - 9° = 180°

combine like terms:

5x + 60° = 180°

subtract 60° from each side of the equation:

5x = 120°

x = 24°

5 0
2 years ago
A bag contains 100 marbles which are red, green, and blue. Suppose a student randomly selects a marble without looking, records
ra1l [238]

Answer:

35 red marbles

Step-by-step explanation:

So we can put the different color marbles in a ratio. So 7:2:11. If we add all of those up we get 20. We do 100/20 to get 5. Each number in the ratio is equivalent to 5 marbles. Then we do 7*5 to get 35. We can check our work by doing, (7*5) + (2*5) + (11*5) = 100. And it does equal 100 so the answer is correct.

6 0
3 years ago
Read 2 more answers
Simplify x - 2 / 7(x-2)^2
VashaNatasha [74]

Answer:

1 / 7 (x - 2)

Step-by-step explanation:

x - 2 / 7(x - 2)^2

= (x - 2) / 7 (x - 2) (x - 2)

= 1 / 7 (x - 2)

7 0
2 years ago
Please I need some answers a few is fine
Nataly_w [17]

Answer:

a. 9 b.36 c. 100 d. 13689

8 0
3 years ago
(10а+12 <br>b ) (3а-12b​
liq [111]

Answer:

2(5a+6b)

Step-by-step explanation:

7 0
2 years ago
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