Answer:
A = 20°
AC = 6.6
BC = 2.4
Step-by-step explanation:
Given:
B = 70°
C = right angle = 90°
AB = 7
Required:
A, AC, and BC
Solution:
✔️A = 180 - (90 + 70) (sum of triangle)
A = 20°
✔️Use trigonometric function to find AC:
Refernce angle = 70°
Opp = AC
Hypotenuse = 7
Apply SOH,
sin 70 = Opp/Hyp
sin 70 = AC/7
7 * sin 70 = AC
6.57784835 = AC
AC = 6.6 (nearest tenth)
✔️Use trigonometric function to find Bc:
Refernce angle = 70°
Adj = BC
Hypotenuse = 7
Apply CAH,
cos 70 = Adj/Hyp
cos 70 = BC/7
7 * cos 70 = BC
2.394141 = BC
BC = 2.4 (nearest tenth)
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Answer:
33 minutes
Step-by-step explanation:
We know that the initial amount of money on the card is $15 and that she had $12.03 after the call. We can subtract 12.03 from 15 to find out how much the call cost.
15 - 12.03 = 2.97
Now that we know the cost of the call is $2.97, we can divide it by the amount it cost per minute (9 cents) for Susan to make an international call:
First, convert $2.97 to cents:
$2 is the same as 200 cents.
200 + 97 = 297
Now, take 297 and divide it by 9:
297/9 = 33
The call lasted 33 minutes.
Answer:
16x - 5
Step-by-step explanation:
2(x-3) + 2(7x+1) since there are 4 sides, 2 which have the same dimensions
2x - 6 + 14x + 1 = 16x - 5
