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2 years ago

How do you Simplify : (-2x + 8.1y) - (-9x + 5.3y).

Mathematics

1 answer:

Dima020 [189]2 years ago

4 0

Answer:.

7x+2.8y

Step-by-step explanation:

(-2x + 8.1y) - (-9x + 5.3y)

(-2x + 8.1y) + (9x - 5.3y)

7x+2.8y

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For the total population of a large southern city, mean family income is $34,000, with a standard deviation (for the population)

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It will be 43.800 you welcome and that was hard

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A right pyramid with a square base has a base edge length of 12 meters and slant height of 6StartRoot 2 EndRoot meters. The apot

Jet001 [13]

Answer:

Volume of the right pyramid = 288 m²

Step-by-step explanation:

Volume of the pyramid = $\frac{1}{3}\times {\text{Area of the rectangular base}\times height(h)$

From the ΔAOB,

By Pythagoras theorem,

AB² = AO² + OB²

(6√2)² = AO² + (6)²

72 = AO² + 36

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Since base of the pyramid is a square so area of the base = (Length × Width) = (side)²

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The Ignorance Survey: United Kingdom A survey was conducted in the United Kingdom, where respondents were asked if they had a un

lukranit [14]

Answer:

Here we have given two catogaries as degree holder and non degree holder.

So here we have to test the hypothesis that,

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Assume alpha = level of significance = 5% = 0.05

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Here test statistic follows standard normal distribution.

The test statistic is,

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This we can done in TI_83 calculator.

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2 years ago

A local trucking company fitted a regression to relate the travel time (days) of its shipments as a function of the distance tra

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Answer:

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Add. ˉ8 + ˉ6 = ____

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