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3 years ago

46 POINTS!!!

Mathematics

1 answer:

charle [14.2K]3 years ago

6 0

Answer:

Step-by-step explanation: 57.7r + 23.23 = 2.57 57.7/57.7 = -20.66/57.7

- 23.23 - 23.23

57.7r = -20.66

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Determine 2nd term and rth term of a.p.whose 6 th term is 12 and 8 th term is 22

mario62 [17]

Answer: $\bold{a_2=-8\qquad \qquad a_r=5r-18}$

<u>Step-by-step explanation:</u>

Given: a₆ = 12 a₈ = 22

$d=\dfrac{a_8-a_6}{8-6}\quad = \dfrac{22-12}{8-6}\quad =\dfrac{10}{5}\quad =\boxed{5}$

$a_n=a_0+d(n-1)\\\\\\\underline{\text{Use}\ a_6\ \text{to find}\ a_o}\\a_6=a_o+5(6-1)\\\\12=a_o+5(6-1)\\\\12=a_o+25\\\\a_0=\boxed{-13}\\\\\\\underline{\text{Equation:}}\\a_n=13+5(n-1)\\.\quad =-13+5n-5\\.\quad =5n-18\\\\\\\underline{2^{nd\ term:}}\\a_2=5(2)-18\\.\quad = 10-18\\.\quad =\boxed{-8}\\\\\\\underline{r^{th}\ term:}\\\boxed{a_r=5r-18}$

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3 years ago

What steps should be taken to complete the conversion?

dusya [7]

To complete the conversion, the following will be gotten:

12880 m

<h3>How to convert distance?</h3>

Using conversion technique,

8 mi / 1 × 1.61 k / 1 mi × 1000m / 1k

we have to cancel out similar units in the numerator and denominator.

Therefore,

8 mi / 1 × 1.61 k / 1 mi × 1000m / 1k

8 / 1 × 1.61 / 1 × 1000m / 1 = 12.88 / 1 × 1000m

Hence,

12.88 / 1 × 1000m = 12880 m

learn more on conversion here: brainly.com/question/16887207

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2 years ago

Anson wanta to find the discounted price of a basketball. The basketball has an orginal price of $19.95 and is discounted by 15%

nirvana33 [79]

Answer: D. 19.95 - 0.15 =

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3 years ago

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Setler79 [48]

Answer:

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3 years ago

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alexdok [17]

Answer:

3:4

Step-by-step explanation:

That ratio would be 12:16, or 3:4.

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3 years ago