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Nata [24]
2 years ago
9

How to write (X+3)(x+5) in a equivalent expression

Mathematics
2 answers:
Blizzard [7]2 years ago
5 0

Answer:

x^2 +8x+15

Step-by-step explanation:

(X+3)(x+5)

FOIL

first  x^2

outer  5x

inner 3x

last  15

Add together

x^2 +5x+3x+15

x^2 +8x+15

Alex Ar [27]2 years ago
5 0

Answer:

Step-by-step explanation:

(x+3)(x+5)=x²+5x+3x+15

x²+8x+15 is equivalent to: (x+3)(x+5)

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Which statement best describes how to determine whether f(x) = x2 – x + 8 is an even function? Determine whether –x2 – (–x) + 8
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Answer:

B.

Step-by-step explanation:

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The distance between Cincinnati,Ohio and Charlotte,North Carolina,is about 336 miles. The distance between Cincinnati and Chicag
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336+247=583miles

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3 years ago
Which of the following states the conditions that the graph meets?
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B is correct
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The article "Occurrence and Distribution of Ammonium in Iowa Groundwater" (K. Schilling, Water Environment Research, 2002:177–18
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Answer: 95% confidence interval for the difference between the proportions would be (1.31, 1.39).

Step-by-step explanation:

Since we have given that

Number of alluvial wells = 349

Number of quaternary wells = 143

Number of alluvial wells that had concentrations above 0.1 = 182

Number of quaternary wells that had concentrations above 0.1 = 112

Average of alluvial wells = 0.27

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Average of quaternary wells = 1.62

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So, 95% confidence interval gives

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\dfrac{\alpha}{2}=2.5\%\\\\z_{\frac{\alpha}{2}}=1.96

So, 95% confidence interval becomes,

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Hence, 95% confidence interval for the difference between the proportions would be (1.31, 1.39).

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Greg builds a new pond which has a volume of 7.35 m3. What is the width of the pond?
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