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lozanna [386]
2 years ago
12

I need help with a assignment on McGrawhill pls help its due soon

Mathematics
2 answers:
Norma-Jean [14]2 years ago
8 0
The answer to this would be 30/125 science fiction books
Sav [38]2 years ago
8 0
The answer is 30 science fiction books because 5 x 25 = 125 so 5x6= 30
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3 over 12 rational or irrational?
Olegator [25]
Rational ! the number doesn't repeat forever or anything like that. it simplifies nicely.
5 0
3 years ago
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A plane covers 2,160 miles in 5.5 hours. what is the average speed of the plane to the nearest tenth?
pantera1 [17]
2160 divided by 5.5 = 392.7 hopefully this is right!

8 0
3 years ago
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The length of one side of a triangle is 2 feet less than three times the length of its second side. The length of the third side
seropon [69]

Answer:

  • 7 feet, 3 feet, 7.5 feet

Step-by-step explanation:

Let the sides be a, b and c.

<h3>Given</h3>

The length of one side of a triangle is 2 feet less than three times the length of its second side

  • a = 3b - 2

The length of the third side is 3/4 of the sum of the lengths of the first two sides:

  • c = (3/4)(a + b)

The perimeter of the triangle is 17.5 feet:

  • a + b + c = 17.5

<h3>Solution</h3>

Substitute a with b in the second equation:

  • c = (3/4)(3b - 2 + b) = (3/4)(4b - 2) = (3/4)(4b) - (3/4)(2) = 3b - 1.5

Now substitute a and c with b in the third equation and solve for b:

  • a + b + c = 17.5
  • 3b - 2 + b + 3b - 1.5 = 17.5
  • 7b - 3.5 = 17.5
  • 7b = 17.5 + 3.5
  • 7b = 21
  • b = 3

Find the value of a:

  • a = 3b - 2 = 3*3 - 2 = 9 - 2 = 7

Find the value of c:

  • c = 3b - 1.5 = 3*3 - 1.5 = 9 - 1.5 = 7.5

The sides of the triangle are:

  • a = 7 feet, b = 3 feet, c = 7.5 feet

8 0
1 year ago
The number of students of 7 more than 5 times the number of teacher. there are 12 theacher. how many students are there?
Alborosie

students =7+5*teachers

students = 7+5*12

students = 7+60

students = 67

5 0
3 years ago
Solve the quadratic equation by factoring-
shtirl [24]

Answer:

c- (2x+3)(x+1)

Step-by-step explanation:

Let me know if you want step by step

3 0
3 years ago
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