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Lelechka [254]
4 years ago
13

Please can someone help me

Mathematics
1 answer:
Sidana [21]4 years ago
4 0
If the answer is D. the equation to represent the ages of students is:
n + n+1 + n+2 = 45
it is showing that  n is the age of one student and the other student has age one year more than the first one and third students has age of 2 years more than first student and one year greater than the second student. if we solve this equation for the value of n, we get;
3n + 3 = 45
3n = 45 -3
3n = 42
n = 14
so the age of one student is 14, second student 15 and third student 16 years.
and if we add there ages, 14 + 15 + 16 = 45
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4 years ago
Can someone help me this ? Finding an angle measure for a triangle with an extended side
Sedaia [141]

Answer:

x° =121°

Step-by-step explanation:

The inside angles of a triangle together must equal 180°. Therefore, 58° + 63° + n° = 180° if n equals the third angle inside the triangle. So,

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Since the outside angle x and 59° must also equal 180°,

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You can also find the exterior angle without finding the interior by adding the two other interior angles together.

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3 0
3 years ago
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Makovka662 [10]

Answer:

he stayed 8 hours and 35 minutes

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7 0
3 years ago
Sam has nine yellow pencils in his desk 3/4 of his pencils are yellow how many pencils does Sam have in his desk
mrs_skeptik [129]

Answer:

12

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3 years ago
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Step2247 [10]

Answer:

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Step-by-step explanation:

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