A phone is regularly priced at $350. If you get it on sale for 15% off, how much do you pay?

Mathematics

2 answers:

dsp732 years ago

6 0

The answer is 52.5 because once you divide 5250/100 then you get 52.5

Nesterboy [21]2 years ago

5 0

52.5

Explanation:
x/18. 30/100 cross multiply 30*18=5250
5250 divided by 100= 52.5

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What is l3- xl = 8<br> there are two numbers!<br><br> x = ___ or x = ___

forsale [732]

$|3-x| = 8\\
x=-5\\
|3-(-5)|=8\\
|3+5|=8\\
|8|=8$
x = -5 or x=11
since |3 - 11| = |-8| = 8

7 0

3 years ago

State whether the given measurements determine zero, one, or two triangles. b=86, b=21, c=18

hammer [34]

Answer: 1

Step-by-step explanation:

I assume you meant to type $B=86^{\circ}, b=21, c=18$ .

By the Law of Sines,

$\frac{\sin C}{c}=\frac{\sin B}{b} \\ \\ \frac{\sin C}{18}=\frac{\sin 86^{\circ}}{21} \\ \\ \sin C=\frac{18 \sin 86^{\circ}}{21} \\ \\ C=\sin^{-1} \left(\frac{18 \sin 86^{\circ}}{21} \right), 180^{\circ}-\sin^{-1} \left(\frac{18 \sin 86^{\circ}}{21} \right) \\ \\ C \approx 58.77^{\circ}, 121.23^{\circ}$

Since only one of these values will make a triangle (the obtuse possibility for C will mean $B+C > 180^{\circ}$ , which violates the condition that the angles of a triangle add to 180 degrees), 1 triangle can be formed.