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3 years ago

When 4(0.5x+2.5y-0.7x-1.3y+4)is simplified, what is the resulting expression?

Mathematics

2 answers:

ANTONII [103]3 years ago

4 0

Answer:

Resulting expression is - 0.8x + 4.8y +16.

Step-by-step explanation:

Given : 4(0.5x+2.5y-0.7x-1.3y+4).

To find : what is the resulting expression.

Solution : We have given that 4(0.5x+2.5y-0.7x-1.3y+4).

First we will solve the parenthesis by combine like terms:

4( 0.5x - 0.7x +2.5y -1.3y +4).

4( - 0.2x + 1.2y +4).

Now distributes 4 over parenthesis's terms

- 0.8x + 4.8y +16

Therefore, Resulting expression is - 0.8x + 4.8y +16.

Wittaler [7]3 years ago

3 0

2x+10y-2.8x-5.2y+16=

-0.8x+4.8y+16

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Answer:

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b) 0.3040

Step-by-step explanation:

Given data:

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z = 2.133

$P(350000 \leq \bar x \leq 365000) = P(0.467 \leq Z\leq 2.133) = P(Z\leq 2.133) - P(Z\leq 0.467)$

FROM NORMAL DISTRIBUTION TABLE Z VALUE FOR

$P(Z\leq 2.133) = 0.9836$

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SO, = 0.9836 - 0.6796 = 0.3040

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