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Inessa [10]
3 years ago
8

How to solve this problem.

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
7 0
Notice the picture below

now, if the arc "x" is 48°, and the arc across the circle is also 48°, then those chords are congruent, notice the chords in red

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You are playing a game in which a single die is rolled. If a 2 or 5 comes up, you win $36, otherwise you lose $36. What is your
ozzi
Your expected value is 36*2/6 + -36*4/6, which is equal to $-12.
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3 years ago
What integers are plotted on the number line below?
Nonamiya [84]

The correct answer would be D because if there are points at -8 and -2, those are the numbers that are plotted.

4 0
3 years ago
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In ADEF, the measure of ZF=90°, EF = 2.3 feet, and FD = 2.9 feet. Find the measure
neonofarm [45]

Answer:38.4

Step-by-step explanation:

5 0
3 years ago
What's the explicit rule for the sequence 3, -6, 12, -24, 48, ...?
777dan777 [17]

Answer:

\sf \dfrac{-3}{2}(-2)^n

Step-by-step explanation:

Explicit formulas are used to represent all the terms of the geometric sequence with a single formula.

  \sf \boxed{\bf t_n = ar^{n-1}}

a is the first term.

r is the common ratio.

r = second term ÷ first term.

   3 , - 6 , 12, - 24, 48 ,........

a = 3

r = -6 ÷ 3 = -2

         \sf t_n = 3*(-2)^{(n-1)}\\\\

             \sf = 3*(-2)^{n}*(-2)^{-1}\\\\ =3*(-2)^n*\dfrac{-1}{2}\\\\= \dfrac{-3}{2}(-2)^n

Check:

\sf t_1 =\dfrac{-3}{2}*(-2)^1=\dfrac{-3}{2}*(-2) = 3\\\\\\t-2 = \dfrac{-3}{2}*(-2)^2 = \dfrac{-3}{2}*4=-6\\\\\\t_3=\dfrac{-3}{2}*(-2)^3=\dfrac{-3}{2}*(-8)=12

4 0
2 years ago
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Miguel decided to buy a cell phone for $150. It is currently on sale for 10% off. When he got to the counter, he got an addition
aleksandrvk [35]

Answer:

The final cost price of the cellphone is  $121.5

Step-by-step explanation:

The marked price of the cell phone = $150

Now, sale percentage on the marked price = 10%

Now, 10 % of 150 = \frac{10}{100}  \times 150 = 15

⇒The sale discount on the marked price = $15

So, the  selling price of cellphone = Marked Price - Sale discount

                                                        = $150  - $15  = $135

Now, the second discount offered on $135 is 10%

10 % of 130 = \frac{10}{100}  \times 130 = 13.5

⇒The additional sale discount on the selling price = $13.5

So, the final cost of cellphone = Selling Price - Additional Sale discount

                                                        = $135  - $13.5  = $121.5

Hence, the final cost price of the cellphone is  $121.5

5 0
3 years ago
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