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3 years ago

13

Greg has 5 coins in his pocket. The value of all 5 coins is $0.57m which coins does he have in jis pocket

2 answers:

Alisiya [41]3 years ago

8 0

C 2 quarters 25 + 1 nickel 5 + 2 pennies = 0.57

Step2247 [10]3 years ago

4 0

Test all answer choices:
A) 0.25+0.20+0.02 = 0.47 - incorrect
B) 0.75+0.02 = 0.77 - incorrect
C) 0.50+0.05+0.02 = 0.57 correct
D) 0.50+0.10+0.02 = 0.62 incorrect

The correct answer is C.

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What is the nth term of the sequence -2 -8 -18 -32 -50

andreev551 [17]

Answer:

-2n²

Step-by-step explanation:

Using the image attached:
We see that the second differences (blue ones) are all equal so we conclude that this is a quadratic sequence.
The quadratic sequence has the form:
$T_{n} = an^{2} +bn +c$

To find the value of a we just divide second difference ( -4 ) by 2:

$a = \frac{-4}{2}= -2$

Now we have:

$T_{n}= -2n^{2} +bn+c$

Substitute $n_{1}$ and $n_{2}$ into the equation above:

$T_{1} = -2(1)^{2} +b(1) +c$

$T_{2} = -2(2)^{2} +b(2)+c$

Since $T_{1}$ = -2 and $T_{2}$ = -8 , after simplification we have:

$b +c =0$
$2b+c=0$

The solution of this system is:

b=0, c =0

The general term is :

$T_{n} = -2n^{2}$

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2 years ago

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vladimir1956 [14]

Answer:

4.4* 1/3

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22/15

Step-by-step explanation:

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3 years ago

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geniusboy [140]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Solnce55 [7]

Answer:

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Step-by-step explanation:

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Distribute the minus sign

3x -2 -2x -1

Combine like terms

x-3

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