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Cerrena [4.2K]
2 years ago
7

In mr. Klein's class, 40% of the students are boys. What decimal represents the portion of the students that are girls

Mathematics
2 answers:
Papessa [141]2 years ago
6 0
The answer is 0.6

Apparently I need 20 characters so this sentence is spam

alexira [117]2 years ago
6 0
I think the answer is .6, because if 40% of the students are boys, then 60% of the students are girls. 60% as a decimal is .6. Hope this helps!
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Additive inverse of −2, additive identity of −5, additive inverse of 3, multiplicative identity of 19, and multiplicative invers
monitta

Answer:

See Explanation

Step-by-step explanation:

a) Additive inverse of −2

  • the additive inverse of a number a is the number that, when added to 'a', yields zero. This number is also known as the opposite (number), sign change, and negation.
  • So the Additive inverse of -2 is 2. ∴ -2+2=0

b) Additive identity of −5

  • Additive identity is the value when added to a number, results in the original number. When we add 0 to any real number, we get the same real number.
  • -5 + 0 = -5. Therefore, 0 is the additive identity of any real number.

c) additive inverse of 3

  • Two numbers are additive inverses if they add to give a sum of zero. 3 and -3 are additive inverses since 3 + (-3) = 0. -3 is the additive inverse of 3.

d). multiplicative identity of 19

  • an identity element (such as 1 in the group of rational numbers without 0) that in a given mathematical system leaves unchanged any element by which it is multiplied
  • Multiplicative identity if 19 is 1 only, since 19 x 1 = 19.

e) multiplicative inverse of 7

  • Dividing by a number is equivalent to multiplying by the reciprocal of the number. Thus, 7 ÷7=7 × 1⁄7 =1. Here, 1⁄7 is called the multiplicative inverse of 7.

d)  | 11-5|×|1-5|

  • | 11-5|×|1-5| ⇒ I6I×I-4I ⇒ 6×4 ⇒ 24

8 0
3 years ago
Joana alugou um carro para fazer uma viagem de 36km sabendo q o carro percorre 12 km cm 1litro custa
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Answer:

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Step-by-step explanation:

Joana alugou um carro para fazer uma viagem de 36km sabendo que o carro percorre 12 km cm 1 litro custa

Da pergunta:

12 km = 1 litro

36km = x

Cross Multiply.

12x = 36 × 1

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3 years ago
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Answer:

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Step-by-step explanation:

When the base of the angles forms a straight line, the sum of the angles is 180°. That's the definition of supplementary angles.

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<em>"</em><em>Yes,</em><em> </em><em>we </em><em>are </em><em><u>so </u></em><em><u>right</u></em><em> </em><em>together</em><em>!</em><em>"</em>

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3 years ago
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elena-14-01-66 [18.8K]

Answer:

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Step-by-step explanation:

The figure can be considered to be a trapezoid with a rectangle removed.

The area of the trapezoid is ...

  A = (1/2)(b1 +b2)h

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The area of the rectangle is ...

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Then the area of the shaded portion of the figure is ...

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Step-by-step explanation:

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