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dem82 [27]
3 years ago
11

Which property would be used to show that the product of two rational is always rational

Mathematics
1 answer:
KatRina [158]3 years ago
3 0

You multiply two rational numbers by multiplying numerators and denominators with each other. So, you have

\dfrac{a}{b} \times \dfrac{c}{d} = \dfrac{ac}{bd}

A rational number is a fraction where both numerator and denominator are integers. Since the product of two integers is an integer, the result fraction is also a rational number, because both ac and bd are integers.

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Obtuse angles measure greater than 90 degrees
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yes obtuse angles measure over 90 degrees and less 180 degrees

4 0
3 years ago
Help me plz i dont understand how t=40​
timama [110]

Answer:

t=40

Step-by-step explanation:

The sum of all angles in a triangle will always equal 180°. This means that:

(2t-42)+(4t-49)+(2t-49) = 180°

Let's solve this equation!

(2t-42)+(4t-49)+(2t-49) = 180

First we simplify what's on the left side:

2t-42+4t-49+2t-49 = 180

2t+4t+2t-42-49-49 = 180

8t-140 = 180

*Add 140 to both sides

8t = 180+140

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Divide both sides by 8 to know what t means:

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4 0
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lord [1]
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3 years ago
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Vladimir79 [104]

Answer:

See Below

Step-by-step explanation:

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