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ValentinkaMS [17]
3 years ago
10

Amber is on a family cell phone plan with the other 3 members of her family. The family gets 960 shared cell phone minutes a mon

th, and each family member is limited to his or her equal share of the minutes. The only free calls are calls between family members. How many minutes per day can Amber talk on her cell phone with her friends during a 30-day month, without going over her share of the minutes?
Mathematics
1 answer:
Dominik [7]3 years ago
5 0
She can go 10 minutes per day.

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goldenfox [79]

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12% of 315 is 37.8 :) Tag me if I'm wrong

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2 years ago
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17. What are the three angle measures in the triangle shown below?
lianna [129]

Answer:

Option (1)

Step-by-step explanation:

By using triangle sum theorem in the given triangle,

(5x - 7)° + (11x - 4)° + (3x + 1)° = 180°

(5x + 11x + 3x) - (7 + 4 - 1) = 180

19x - 10 = 180

19x = 190

x = 10

Therefore, (3x + 1)° = 30 + 1

                                = 30°

(11x - 4)° = 110 - 4

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(5x - 7)° = 43°

Therefore, Option (1) will be the correct option.

4 0
3 years ago
13 ? start fraction, 13, divided by, 10, end fraction of a number is what percentage of that number?
zubka84 [21]

Answer:

The percentage is 130\%

Step-by-step explanation:

Let

x-----> the number

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7 0
3 years ago
Using the Law of Cosines, in triangle DEF, if e=18yd, d=10yd, f=22yd, find measurement of angle D
Ivahew [28]
Check the picture below.

\bf \textit{Law of Cosines}\\ \quad \\
c^2 = {{ a}}^2+{{ b}}^2-(2{{ a}}{{ b}})cos(C)\implies 
c = \sqrt{{{ a}}^2+{{ b}}^2-(2{{ a}}{{ b}})cos(C)}
\\\\\\
\cfrac{{{ a}}^2+{{ b}}^2-c^2}{2{{ a}}{{ b}}}=cos(C)\implies cos^{-1}\left(\cfrac{{{ a}}^2+{{ b}}^2-c^2}{2{{ a}}{{ b}}}\right)=\measuredangle C\\\\
-------------------------------\\\\
\begin{cases}
d=10\\
e=18\\
f=22
\end{cases}\implies cos^{-1}\left(\cfrac{{{ 18}}^2+{{ 22}}^2-10^2}{2(18)(22)}\right)=\measuredangle D

\bf \implies cos^{-1}\left(0.893\overline{93}\right)=\measuredangle D\implies 26.63^o\approx \measuredangle D

7 0
3 years ago
a business analyst makes 20$ an hour for the first 42 hours he works during a week and 28$ an hour for each worked over 42 hours
sashaice [31]
Y=(20 × 42) + [28 × (x-42)]
8 0
3 years ago
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