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irinina [24]
3 years ago
10

Karen rides her bike 4 mi in 20 min. How many miles will she ride in 1 h and 20 min?

Mathematics
1 answer:
Sever21 [200]3 years ago
6 0
The answer is 84 miles

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D is the midpoint of AC. If AD = 2x + 6 and DC = 4x-7, what is the length of DC?
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A----------D----------C

AD = 2x + 6
DC = 4x - 7

the midpoint D splits AC into 2 equal parts....therefore, AD = DC

2x + 6 = 4x - 7
2x - 4x = -7 - 6
-2x = - 13
x = -13/-2
x = 6.5 

DC = 4x - 7......4(6.5) - 7 = 19 <===
AD = 2x + 6.....2(6.5) + 6 = 19
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Is (x-3) a factor of f(x) = x^2 - 32?
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Answer:

No

Explanation:

Here, we want to use the factor theorem to check if the given linear expression is a factor of the binomial

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\begin{gathered} \text{ x-2 = 0} \\ x\text{ = 2} \end{gathered}

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f(2)\text{ = }2^2-32\text{ = 4-32 = -28}

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Your answer should be 0.3000
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