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Delicious77 [7]
3 years ago
15

Select the correct answer.

Mathematics
1 answer:
Maurinko [17]3 years ago
7 0

Answer:

  D.  $432.84

Step-by-step explanation:

The average daily balance is the weighted sum of the balances. The weight in each case is the number of days the account had that balance.

  adb = (7×745.00 +10×585.15 +7×245.20 +7×90.75)/(7+10+7+7)

  = 13,418.15/31

  = 432.84

Nia's average daily balance was $432.84.

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A triangular city lot bounded by three streets has a length of 300 feet on one street, 250 feet on the second, and 420
Akimi4 [234]

Answer:

The approximate measure of the largest angle formed by these streets is 99.2\°

Step-by-step explanation:

we know that

Applying the law of cosines

c^{2}=a^{2}+b^{2} -2(a)(b)cos(C)

In this problem we have

a=300\ ft

b=250\ ft

c=420\ ft ----> is the greater side

substitute and solve for angle C

420^{2}=300^{2}+250^{2} -2(300)(250)cos(C)

176,400=152,500 -150,000cos(C)

cos(C)=[152,500-176,400]/150,000

cos(C)=-0.1593

C=arccos(-0.1593)=99.2\°

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Step-by-step explanation:

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