3 years ago

Determine which description of description.

Mathematics

1 answer:

ArbitrLikvidat [17]3 years ago

4 0

Answer:

Step-by-step explanation:

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Write the first five terms of the sequence defined by the explicit formula

denis-greek [22]

<u>Answer:</u>

The correct answer option is: 19, 13, 3, -11, -29.

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

We are given the following explicit formula for an arithmetic sequence:

$a_n=21-2n^2$

So to find the first five terms of this sequence, we will substitute the values of $n$ (num here in the given formula:

$a_1=21-2(1)^2\\\\a_1=19$

$a_2=21-2(2)^2\\\\a_2=13$

$a_3=21-2(3)^2\\\\a_3=3$

$a_4=21-2(4)^2\\\\a_4=-11$

$a_5=21-2(5)^2\\\\a_5=-29$

Therefore, the first five terms of the sequence defined by the explicit formula $a_n=21-2n^2$ are 19, 13, 3, -11, -29.

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2 years ago

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todd earn $91.00 working for her uncle yesterday if he worked for 6.5 hours how much did he earn per hour

emmasim [6.3K]

Answer= 14 per hour
91/6.5
=14
Todd earn $14 per hour

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2 years ago

Joseph wants to estimate 1 3/7 . 5 4/5 To estimate, he simplifies the expression 1 1/2 . 6 Is Joseph’s estimate an underestimate

Zolol [24]

Well if her simplifies 1 3/7 to 1 1/2 and 5 4/5 to 6 then he would be overestimating because 1 1/2 is greater than 1 3/7 and 6 is greater than 5 4/5

Hope this helps!

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2 years ago

How many hours would someone who earns 7.50 per hour have to work to earn $116.25

givi [52]

They would have to work 15 hours and 50 minutes

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3 years ago

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Write the ratio 15:25 as a fraction in simplest form.

ale4655 [162]

15:25

treat as fraction

$\frac{15}{25}$

factor

$\frac{(3)(5)}{(5)(5)}=$

$(\frac{3}{5})(\frac{5}{5})=$

$(\frac{3}{5})(1)=$

$\frac{3}{5}$

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2 years ago