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musickatia [10]
3 years ago
8

Fifteen less than twice a number is 53.solve 2n-15=53

Mathematics
2 answers:
Maurinko [17]3 years ago
6 0
2n-15=53
You need to get n by itself. To do that we need to simplify the left hand side of the equation. To do so, we move everything away from n. First add 15 to both sides to eliminate it on the left side. 
2n-15+15=53+15
2n=68
next divide by 2 to solve for n
2n/2=68/2
n=34
vaieri [72.5K]3 years ago
5 0
First add 15 to both sides:

2n = 68

Then divide each side by two.

n = 34
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Hey ok i need help on this question ive been stuck on it for a couple minutes haha
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Answer:

The side s has a length of 4 and side q has a length of 4\sqrt{3} ⇒ F

Step-by-step explanation:

In the 30°-60°-90° triangle, there is a ratio between its sides

side opp (30°) : side opp (60°) : hypotenuse

       1               :         \sqrt{3}            :        2

In the given triangle

∵ The side opposite to 30° is s

∵ The side opposite to 60° is q

∵ The hypotenuse is 8

→ Use the ratio above to find the lengths of s and q

side opp (30°) : side opp (60°) : hypotenuse

       1               :         \sqrt{3}            :        2

       s               :          q             :        8

→ By using cross multiplication

∵ s × 2 = 1 × 8

∴ 2s = 8

→ Divide both sides by 2

∴ s = 4

∴ The length of s is 4

∵ q × 2 = \sqrt{3} × 8

∴ 2q = 8\sqrt{3}

→ Divide both sides by 2

∴ q = 4\sqrt{3}

∴ The length of q is 4\sqrt{3}

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