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galben [10]
3 years ago
12

Last week Kellie ran 28 miles. this week she ran 32. what was the percent change in number of miles she ran

Mathematics
1 answer:
frozen [14]3 years ago
3 0
4/28= 1/7 = 14.3%......
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X-2y=18 2x+y=6 parallel perpendicular or neither
sergey [27]
<h3>Therefore they are perpendicular.</h3>

Step-by-step explanation:

A equation of line is

y =mx +c

Here the slope of the line is m.

Given equations are

x - 2y = 18

⇔-2y = -x +18

\Leftrightarrow y =\frac{1}{2} x -9............(1)

and 2x + y = 6

⇔y = -2x +6 ............(2)

Therefore the slope of equation (1) is(m_1)= \frac{1}{2}

Therefore the slope of equation (2) is(m_2)= -2

If two lines are perpendicular, when we multiply their slope we get -1.

therefore,

m_1. m_2 =\frac{1}{2}. (-2) = -1

Therefore they are perpendicular.

4 0
3 years ago
Zack has an old car. He wants to sell it for 60% off the current price. The
Lelechka [254]

Answer:

300 dollars

Step-by-step explanation:

60% of 500

(60/100) * 500 = 300

4 0
3 years ago
Please answer. QUICK!
sveta [45]

Answer:

12

Step-by-step explanation:

In finding possible outcomes just multiply how much in this case it would be 2 times 6.... Good luck on the test hope this helped

3 0
3 years ago
Read 2 more answers
How is trigonometry used to locate the position of a wildfire.
Dahasolnce [82]

Answer:

Sine Function sin Opposite side/ Hypotenuse

Tangent Function tan Opposite side / Adjacent side

Cosine Function cos Adjacent side / Hypotenuse

Cosecant Function cosec Hypotenuse / Opposite side

Step-by-step explanation:

Your welcome

5 0
4 years ago
What is the quotient in simplified form? State any restrictions on the variable. Show Work.
photoshop1234 [79]
    a+2           a +1
= -------  / ------------------
    a -5      (a - 3)(a - 5)

    a+2           (a - 3)(a - 5)
= -------  *  ------------------
    a -5              a +1

    (a+2)(a - 3)
= ----------------
        a +1

a NOT equal 5 and -1
5 0
3 years ago
Read 2 more answers
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