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marshall27 [118]

3 years ago

7

You estimate that a jar contains 68 marbles. The actual number is 60. Find the percent error. Round your answer to the nearest t

enth.

1 answer:

Alexandra [31]3 years ago

7 0

Normally I'd put 0.1176 but since it's to the nearest tenth it is .1

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Use the properties of operations to write an<br> expression equivalent to:<br> 4x + 1/2 + 2x - 3

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Answer:

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Step-by-step explanation:

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Question 2 please fas

Len [333]

Answer:

a = 3, b = 2

Step-by-step explanation:

It is given that both the polynomials are equal.

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${x}^{3} + (a + b) {x}^{2} - 4x + 2 \\ = {x}^{3} + 5 {x}^{2} - (2a - b)x + 2 \\ \\ equating \: like \: terms \: on \: both \: sides \\ (a + b) {x}^{2} = 5 {x}^{2} \\ \implies \: a + b = 5.....(1) \\ \\ - (2a - b)x = - 4x \\ 2a - b = 4....(2) \\ \\ adding \: equations \: (1) \: and \: (2) \\ \\ 3a = 9 \\ \implies \: a = \frac{9}{3} \\ \huge \red{ \boxed{\implies \: a = 3}} \\ \\ substituting \: a = 3 \: in \: equation \: (1) \\ 3 + b = 5 \\ \implies \: b = 5 - 3 \\ \huge \purple{ \boxed{ \implies b = 2}}$

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3 years ago