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Bas_tet [7]
3 years ago
6

I NEED HELP QUICK !!

Mathematics
1 answer:
klemol [59]3 years ago
4 0
This diagram show the sound wave have a high pitch

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Hello I need help with this math it’s negative fractions so -7 1/5 - (-2/5)
jekas [21]

Answer:

-6 4/5

Step-by-step explanation:

4 0
2 years ago
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$29,000; 4% decrease
Sveta_85 [38]

Answer:

$27,840 is the correct answer

Step-by-step explanation:

hope this helps!

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3 years ago
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Can anybody help me with this
kondaur [170]

Answer:

c ≈ 9.1 m

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides , that is

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5 0
2 years ago
12 time 10 times 10 times 10
slavikrds [6]

Answer:i used a calculator 12000

Step-by-step explanation:12 × 10 × 10 × 10 = 12000

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4 0
3 years ago
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In 1950 the number of retirees was approximately 150 per thousand people aged 20-64. In 1990 this number rose to approximately 2
serg [7]

Answer: 233 people per thousand

Step-by-step explanation:

Using extrapolation method,

if 150/k in 1950,

  200/k in 1990,

  275/k in 2020,

2003 lies in between 1990 and 2020. So, you extrapolate the values of 200/k and 275/k for the years respectively.

Therefore,  

(2003 - 1990)/(2020 - 2003) = (x - 200)/(275 - x)

Where x is the number of retirees per thousand for 2003

Making x the subject of relation in the above equation.

Cross multiply the equation above;

(2003 - 1990)(275-x) = (2020 - 2003)(x - 200)

13(275 - x) = 17(x-200)

3575 - 13x = 17x - 3400

Collect the like terms

3575+3400 = 17x + 13x

30x = 6975

x = 6975/30

x = 232.5

x = 233 people per thousand to the nearest integer

6 0
3 years ago
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