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lidiya [134]
3 years ago
6

Three times a number +12-5 times the same number is 22. What is the number?

Mathematics
1 answer:
igomit [66]3 years ago
4 0

Let the number be x, then:-

3x + 12 - 5x = 22

-2x = 10

x = -5

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skad [1K]

Answer:

$390+0.07s=$544+0.05s Subtract $390 from each side.

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5 0
3 years ago
A man standing on a lighthouse at a height of 124 feet sights two boats directly in front of him. One is at an angle of depressi
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Answer:

125\ ft

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

In the right triangle ABC find the length side BC

we know that

tan(62\°)=\frac{124}{BC}

BC=\frac{124}{tan(62\°)}

step 2

In the right triangle ABD find the length side BD

we know that

tan(33\°)=\frac{124}{BD}

BD=\frac{124}{tan(33\°)}

step 3

we know that

The distance between the two boats is the length side CD

CD=BD-BC

substitute the values  

CD=\frac{124}{tan(33\°)}-\frac{124}{tan(62\°)}=125\ ft

5 0
3 years ago
PLEASE HELP!! POLYNOMIAL!
german
Just combine like terms:   all of the x^2 together, all of the x's together and all of the numbers:

3x2+5x2+5x-2-1
8x2+5x-3 simplified, so letter A
4 0
3 years ago
Read 2 more answers
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3 years ago
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21.406 in standard form
Vitek1552 [10]

21.406 in standard form

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2 years ago
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