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Vesnalui [34]
3 years ago
14

Yesterday, Deon had 99 baseball cards. Today, he gave d away. Using d, write an expression for the number of cards Deon has left

.
Mathematics
1 answer:
Nutka1998 [239]3 years ago
4 0
99-d=54

Is this what you were referring to?
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In ABC, b = 68 inches, B=65° and C=93º. Find the length of a, to the nearest<br> inches
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Answer:

28inches

Step-by-step explanation:

∠A + ∠B + ∠C = 180°

∠A + 65° +93° = 180°

∠A + 158° = 180°

∠A= 180°-158° = 22°

Using Law of Sines

a/sinA= b/sinB

a/sin22= 68 inches/sin65

a/sin22 = 68/0.9063 = 75.03

a = 75.03 x sin 22

a = 75.03 x 0.3746 = 28.106238≈28 inches

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Step-by-step explanation:

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3 years ago
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The line with equation ax+by=20 passes through the points(-2,10) and (1,5)<br>find a and b
Doss [256]
ax+by=20 \\ \\(-2,10) \\ \\ a*(-2)+b*10 = 20 \\ \\-2a +10b = 20 \\ \\ (1,5)\\ \\ a*1+b*5 = 20 \\ \\ a +5b = 20
 
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a=\frac{10}{2}=5\\ \\\begin{cases} a= 5 \\b=3\end{cases}




6 0
4 years ago
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1 + 1 = ? <br> I am a Collage Student and i have ZERO idea what this is.
Effectus [21]
Answer: 2
Explanation: common sense math lol
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