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poizon [28]
3 years ago
12

Two less than 3times a number is the same as the number plus 10.

Mathematics
2 answers:
Brilliant_brown [7]3 years ago
5 0

Answer:

6

Step-by-step explanation:

3n - 2 = n + 10.    add 2

3n = n + 12           subtract n from both sides

2n = 12.                divide by 2

N = 6

The number is 6

lisov135 [29]3 years ago
4 0
5 is the number

3n - 2 = n + 10 add 2 to both sides
3n = n + 10 subtract n from both sides
2n = 10 divide both sides by 2
n = 5
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The distance of one light-year is approximately 9,500,000,000,000 kilometers. What is this distance in scientific notation?
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9.5*10^12 km

Step-by-step explanation:

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3 years ago
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The volume of this rectangular prism is 72 cubic units. We multiply 6*4*3 to get 72.

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Find the measure of angles 1, 2, 3, 4, 5 ,6 and 7
vivado [14]

Answer:

angle1=70

angle2=65

angle4=115

angle7=45

angel6=45

angle5=45

Step-by-step explanation:

110+angle1 = 180

angle1 =180-70

angle1 = 70

115+angle2=180

angle2=180-115

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angle4=115 because lines are parallel

angle1+angle2+angle7=180 because triangle

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8 0
3 years ago
B
Alenkinab [10]

Answers:  

hypotenuse = 20 feet

longer leg = 16 feet

======================================================

Explanation:

c = x = length of the hypotenuse

a = x-4 = length of one of the legs

b = 12 = length of the other leg

Use the pythagorean theorem

a^2 + b^2 = c^2

12^2 + (x-4)^2 = (x)^2

144 + x^2 - 8x + 16 = x^2

144 - 8x + 16 = 0 .... the x^2 terms cancel

160-8x = 0

160 = 8x

8x = 160

x = 160/8

x = 20 is the hypotenuse

x-4 = 20-4 = 16 is the longer leg

--------

Check:

12^2+16^2 = 144+256 = 400

20^2 = 400

Since 12^2+16^2 = 20^2 is true, this means we have a right triangle with legs of 12 and 16, while the hypotenuse is 20. The answer is confirmed.

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2 years ago
Use complete sentences to describe the relationship that is determined by the Pythagorean theorem.
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The hypotenus square is equivalent to the sum of the square of base and perpendicular.
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3 years ago
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