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Maurinko [17]
4 years ago
11

Lewis needed to find the difference in lengths between the hypotenuse and the longest leg of this triangle. His work is shown be

low.
What errors did Lewis make? Check all that apply

Mathematics
2 answers:
exis [7]4 years ago
8 0

Answer:

He simplified  \sqrt{400}  incorrectly. It should be 20 instead of 200.


Step-by-step explanation:

Lewis made a mistake on the 5th line of his solution.

Square root of 400 is 20, NOT 200.

So the answer for c would be 20.

And the difference between hypotenuse (20) and longer leg of the two (16) is 20-16=4


First answer choice is correct one.

quester [9]4 years ago
8 0
A and B
square root of 400 is 20.
He found the wrong difference, looking leg is 16 not 12.
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algol13

Answer:

y = x^2 +6x+8

Step-by-step explanation:

First find the zeros, -4 ,-2

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y = a(x+4)(x+2)

Then it is multiplied by a constant so pick a point on the curve and solve for the constant

We will use (0,8)

8 = a(0+4)(0+2)

8 = a(8)

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Writing in standard form

FOIL

y = x^2 +2x+4x+8

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6 0
3 years ago
Please help with the problem
worty [1.4K]

Answer:

95%

Step-by-step explanation:

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Then from the rest of the information, 2 red, 2 green, and 1 yellow balloon all popped.

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7 0
3 years ago
780 students stand in rows and columns. each row has an equal number of students and each column has an equal number of students
Alex73 [517]

Answer:

Step-by-step explanation:

x = number of rows

780=x(x+4)

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8 0
3 years ago
1. Garbage Production. Based on a sample of 62 households, the mean weight of discarded plastic is 1.93 pounds and the standard
Contact [7]

Answer:

The answer is below

Step-by-step explanation:

Given that:

Mean (μ) = 1.93, standard deviation (σ) = 1.08 pounds, sample (n) = 62.

the mean weight of discarded plastic for all household is given by:

\mu_x=\mu = 1.93\ pounds

The standard deviation of discarded plastic for all household is given by:

\sigma_x=\frac{\sigma}{\sqrt{n} }  =\frac{1.08}{\sqrt{62} }=0.137\ pounds

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α = 1 - c = 1 - 0.9 = 0.1

α/2= 0.1/2 = 0.05

The z score of 0.05 corresponds to the z score of 0.45 (0.5 - 0.05) which is 1.645. i.e. z_\frac{\alpha}{2}=z_{0.05}=1.645

The margin of error (E) = z_{0.05}\frac{\sigma}{\sqrt{n} }=1.645*\frac{1.03}{\sqrt{62} }=  0.2256

The confidence interval = \mu \pm E=1.93 \pm 0.2256=(1.7044,2.1556)

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4 years ago
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The correct answer ids 100% answer choice D
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