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miskamm [114]
2 years ago
7

Which of the following is an irrational number?

Mathematics
2 answers:
Gelneren [198K]2 years ago
7 0
B
An irrational number can’t be expressed as a fraction
Fantom [35]2 years ago
4 0

Answer:

A.

Step-by-step explanation:

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ED is the adjacent leg to 0.
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A bag has 7 red marbles, 8 blue marbles, and 5 purple marbles. Rachel draws a marble from the bag without looking.
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Answer:

v_1=3.33 \ miles/hour\\v_2=6.66 \ miles/hour

Step-by-step explanation:

<u>Constant Speed Motion </u>

When the object travels the same distances in the same period of time, the speed is constant and is can be calculated as

\displaystyle v=\frac{x}{t}

where x is the distance and t is the time

There are two canoes traveling at speeds v1 and v2. One of them has twice the speed as the other. Let's say

v_2=2v_1

When t hours have passed, the canoes have traveled x1 and x2 respectively.

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x_2=v_2t

Since

v_2=2v_1

Then

x_2=2v_1t

The distance between them is

X=x_2-x_1=2v_1t-v_1t

X=v_1t

That distance is known and equals 11.25 miles, thus

v_1t=15

Solving for v1 and using t=4.5 hours

\displaystyle v_1=\frac{15}{4.5}

v_1=3.33 \ miles/hour

v_2=2\times 3.33

\boxed{v_2=6.66 \ miles/hour}

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