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IceJOKER [234]
3 years ago
12

A1=1 , an= 4a n-1 -1

Mathematics
1 answer:
Readme [11.4K]3 years ago
4 0
<span>for part (a) find the sum of the first n terms of the arithmetic series. for part (b) find n for the given sum Sn.
45. 3+8+13+18+23+...
a. n=20
b. Sn=366
46. 50+42+34+26+18+...
a. n=40
b. Sn=182
47. -10+(-5)+0+5+10+...
a. n=19
b. Sn=375
48. 34+31+28+25+22+...
a. n=32
b. Sn=-12
49. 2+9+16+23+30+...
a. n=68
b. Sn=1661
50. 2+16+30+44+58+...
a. n=24
b. Sn=2178
</span>
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Round 6.2145 to the nearest millionth. (A) 6.2145455 (B) 0 (C) 6.2145215 (D) 6.214545
NeTakaya

Answer:

The correct answer is (D) 6.214545

Step-by-step explanation:

To get the correct answer, note that the millionth place includes 6 numbers after the decimal place. D is the only answer with that many.

3 0
3 years ago
TRAP is a trapezoid. If TR= 17 and PA= 23, then find the length of EF .
Inessa05 [86]

Answer:

20

Step-by-step explanation:

23 + 17 = 40

40 / 2 = 20

Hope that helps!

4 0
3 years ago
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Graph the line with the equation y<br> - 1x – 7.
Vladimir79 [104]

Hey there!

Answer:\boxed{\text{Slope:}-1}\boxed{\text{y-intercept:}(0,-7)}

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8 0
3 years ago
GIVING BRAINLIEST PLZZ HELP+XTRA POINTS
3241004551 [841]

Answer:

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Step-by-step explanation:

3 0
2 years ago
Solve: 19.2 x + 3 = 4.6 3x -5
levacccp [35]

Answer:

x=−1.481481

Step-by-step explanation:

Let's solve your equation step-by-step.

19.2x+3=(4.6)(3)x−5

Step 1: Simplify both sides of the equation.

19.2x+3=(4.6)(3)x−5

19.2x+3=13.8x+−5

19.2x+3=13.8x−5

Step 2: Subtract 13.8x from both sides.

19.2x+3−13.8x=13.8x−5−13.8x

5.4x+3=−5

Step 3: Subtract 3 from both sides.

5.4x+3−3=−5−3

5.4x=−8

Step 4: Divide both sides by 5.4.

5.4x

5.4

=

−8

5.4

x=−1.481481

Answer:

x=−1.481481

4 0
3 years ago
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