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3 years ago

8

If an athlete can bike 6 miles in 25 minutes, how many miles will he bike in an hour and half if he continues to bike at the sam

e rate?

1 answer:

Len [333]3 years ago

8 0

Answer:

21.6 miles

Step-by-step explanation:

1 hour and a half is 90 minutes

90 divided by 25 is 3.6

3.6 x 6 = 21.6

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If 60 newspapers cost $27, find the cost of 16

Tju [1.3M]

16 newspapers cost $7.20

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3 years ago

Simplify 17^2 and 18.79^2.

Westkost [7]

17^2 is 289

18.79^2 is 353.0641

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3 years ago

which ordered pair could be added to the relation below to ensure it continues to be a function? (-7,9) (4,-1) (0,5) (-2,-2)

marin [14]

Answer:

[see below]

Step-by-step explanation:

A function's inputs do not repeat. This means that any point with the x-value not repeated with the other points can be added to ensure that it continues as a function.

In this scenario:

{x| x ≠ -7, 4, 0, -2}

A point that does not have the x-value of -7, 0, 4, and -2 could be added to the relation to ensure it continues to be a function.

Hope this helps.

4 0

3 years ago

How are exponents and radicals used to present roots of real numbers

MissTica

Answer:

$\sqrt[n]{a} =a^{\frac{1}{n}}$

Explanation:

Roots of real numbers can be represented by <em>radicals</em> or by<em> exponents. </em>

First, I present some examples to show how exponents and radicals are related, and then generalize.

$\sqrt{4}=4^{(\frac{1}{2})}=(2^2)^\frac{1}{2}=(2)^{\frac{2}{2}}=2^1=2\\\\\\\sqrt{25}=(25)^{\frac{1}{2}}=(5^2)^{\frac{1}{2}}=(5)^{\frac{2}{2}}=5^1=5$

$\sqrt[3]{8}=(8)^{\frac{1}{3}}=(2^3)^{\frac{1}{3}}=(2)^{\frac{3}{3}}=2^1=2$

When you write 5² = 25, then 5 is the square root of 25.

And in general, if n is a positive integer and $a^n=x$ , then $a$ is the nth root of x.

Also, if n even (and positive) and $a$ is positive, then $a^{\frac{1}{n}}$ is the positive nth root of $a$

Thus,

$\sqrt[n]{a} =a^{\frac{1}{n}}$

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3 years ago

Right triangle ABC is shown. Which of these is equal to cos(A)?

REY [17]

Answer: C

cosA=AC/AB

sinB=AC/AB

hence cosA=sinB

7 0

3 years ago

Read 2 more answers