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Georgia [21]
2 years ago
11

What's the nth term for -1,3,7,11?

Mathematics
2 answers:
xz_007 [3.2K]2 years ago
7 0
The difference is 4

-1 +4 (n - 1)
-1 +4n - 4
-5 + 4n
luda_lava [24]2 years ago
5 0
The nth term is 4n-5
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Solve y + (-18) = -12
natali 33 [55]

Answer:

Y = 6 I’m pretty sure if its not 6 it’s -6

Step-by-step explanation:

7 0
3 years ago
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What is the area of the composite figure? (use 3.14 for pi). Explain how you arrived at your answer. Please round to the nearest
maksim [4K]

The area of the given diagram is 29.817 square centimeters. The given diagram is combination of rectangle and semi circle.

Step-by-step explanation:

The given is,

                 Given diagram is combination of Rectangle and Semi circle.

Step:1

         Res the attachment,

                      Area of given diagram = Area of A + Area of B..............(1)

Step:2

         For A,

         The A section in the given diagram is semi circle,

                     Diameter of semi circle = Total distance - ( 2+3)

                                          ( ∵ 2, 3 are top distance in the given diagram)

                                                             = 10 - 5

                                        Diameter, d = 5 cm

                                             Radius, r = \frac{d}{2}

                                                          r = \frac{5}{2}

                                                         r = 2.5 cm

                                          Area, A_{A}  = \frac {\pi r^{2} }{2}........................(2)

                                                    A_{A}  = \frac {\pi (2.5)^{2} }{2}  

                                                           = \frac {\pi ( 6.25) }{2}

                                                           = \frac{19.63}{2}

                                                     A_{A} = 9.8174 cm^{2}

Step:3

               For B,

               Area of rectangle is,

                                                      A_{B} =lb.....................(3)

              Where, l - Length = 10 cm

                          b - Width = 2 cm

              Equation (3) become,

                                                            = (10)(2)

                                                            = 20

                                    Area of B, A_{B} = 20 cm^{2}

Step:4

               From the equation (1),

                               Area of given diagram = 20+ 9.81747

                                                            Area = 29.817 square centimeters

Result:

            The area of the given diagram is 29.817 square centimeters. The given diagram is combination of rectangle and semi circle.

5 0
2 years ago
Simplify<br> (4i)(–5i)(6i)<br><br> –120<br><br> –120i(incorrect)<br><br> 120i<br><br> 120
professor190 [17]

Answer:

120i

Step-by-step explanation:

;i × i = -1....so hence

4i × (-5i) = -20 i^2...which is -20(-1) = 20....

then you multiply with 6i

20(6i) = 120i

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3 years ago
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Answer:

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Step-by-step explanation:

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let f(x)=y

y=3x+2

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x=y-2/3

Therefore f^-1(x)=x-2/3

Now f^-1(-12)=-12-2/3

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How do you write 2,252/ 1,000 as a percentage?
REY [17]
225% 2252/1000 is a fraction so you divide and get 2.25 and move the decimal point over two to the right. 
6 0
2 years ago
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