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Vlad [161]
3 years ago
11

It is given that in △ABC, AD ⊥ BC. Using the definition of sine with angle C in △ACD results in sin(C) = . Using the multiplicat

ion property of equality to isolate h, the equation becomes bsin(C) = h. Knowing that the formula for the area of a triangle is A = bh is and using the side lengths as shown in the diagram, which expression represents the area of △ABC? bsin(C) absin(C) cbsin(C) hbsin(C)

Mathematics
2 answers:
amid [387]3 years ago
7 0

We see here in the diagram that the base is a. We know this because the height is perpendicular to it. We also know the height is bsin(C) which, when replace h for bsin(C) and a for the base, we get A=absin(C), which is the second option.

shtirl [24]3 years ago
6 0

Answer:

B

Step-by-step explanation:

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Step-by-step explanation:

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Helppppp<br> Solve for x.<br> X= [?]<br><br> 5х – 5/2x + 10
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Step-by-step explanation:

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Rafael can choose plan a or Plan B for his long-distance charges. For each plan, cost (in dollars) depends on minutes used (Per
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Answer:

a. Plan B; $4

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Step-by-step explanation:

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Find 80 on the x axis, and trave it up to to intercept the blue line (for Plan A). Check the y axis to see the value of y at this point. Thus:

f(80) = 8

This means Plan A will cost $8 for Rafael to 80 mins of long distance call per month.

Also, find the cost per month for 80 mins for Plan B. Use the same procedure as used in finding cost for plan A.

Plan B will cost $12.

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Plan B cost $4 more than Plan A ($12 - $8 = $4)

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4 0
3 years ago
I don’t know how to answer my this math question, it’s easy so please help
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7 0
3 years ago
A random sample of 20 purchases showed the sample mean of $48.77 and the sample standard deviation s is $17.58. How large is the
laila [671]

Answer:

<h2>$5.03</h2>

Step-by-step explanation:

Given data          

Sample Mean (M):  $48.77  

Sample Size (n): 20

Standard Deviation (σ) :  $17.58

Confidence Level: 80%

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We can now substitute into the expression and solve for the MOE as

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The margin of error for a 80 % confidence interval is $5.03

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3 years ago
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