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Phoenix [80]
3 years ago
6

the phone company charges a monthly rate of $10 for a phone line and $.015 a minute. How much was your bill if you talked 45 min

utes
Mathematics
1 answer:
ELEN [110]3 years ago
8 0

Answer:

10.68 or 10.675 for unrounded version

Step-by-step explanation:

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kotegsom [21]
Subtract 86-42... the answer is 44 degrees
7 0
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Sin 0 = 0.731353701, 0º PLEASE HELP!!
Snezhnost [94]

Answer:

The two solutions for \sin \theta = 0.731353701 are \theta_{1} \approx 47^{\circ} and \theta_{2}\approx 133^{\circ}, respectively.

Step-by-step explanation:

The sine function is positive in the first and second quadrants, that is, 0^{\circ}< \theta < 180^{\circ}. Then, there are two solutions for the given value by means of the following inverse trigonometrical function:

\theta = \sin^{-1} 0.731353701

\theta_{1} \approx 47^{\circ} and \theta_{2}\approx 133^{\circ}

The two solutions for \sin \theta = 0.731353701 are \theta_{1} \approx 47^{\circ} and \theta_{2}\approx 133^{\circ}, respectively.

7 0
3 years ago
A shirt is on sale for 30% off. The expression p minus 0.30 p, where p is the original cost of the shirt, can be used to find th
zhannawk [14.2K]

Answer:

Step-by-step explanation:

"the same as decreased by 30%" would be (1.00 - 0.30)(original cost), or

                                                                               0.70(original cost)

Note:  when answer choices are give, kindly share them.  Thank you.

8 0
3 years ago
What two numbers add up to 6 and multiply to 12?
GuDViN [60]
Erm

x+y=6
xy=12


x+y=6
y=6-x
sub back

xy=12
x(6-x)=12
6x-x^2=12
x^2-6x=-12
x^2-6x+12=0
quadratic formula
for
ax²+bx+c=0
x= \frac{-b+/- \sqrt{b^2-4ac} }{2a}

for
x²-6x+12=0
a=1
b=-6
c=12
and remember that √-1=i

x= \frac{-(-6)+/- \sqrt{(-6)^2-4(1)(12)} }{2(1)}
x= \frac{6+/- \sqrt{36-48} }{2}
x= \frac{6+/- \sqrt{-12} }{2}
x= \frac{6+/- (\sqrt{-1})(\sqrt{12}) }{2}
x= \frac{6+/- (i)(2\sqrt{3}) }{2}
x= \frac{6+/- 2i\sqrt{3} }{2}
x=3+/-i√3

the numbers are 3+i√3 and 3-i√3
no real numbers tho
7 0
3 years ago
Solve for x in this linear equation: -30 + 30x = 4(3 + 4x).
DIA [1.3K]
Your answer should be 12+16x
7 0
3 years ago
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