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Katarina [22]
3 years ago
12

Solve for x. 3(x + 2) + 4(x - 5) = 10

Mathematics
2 answers:
____ [38]3 years ago
6 0

Step-by-step explanation:

3x+6+4x-20=10

7x-14=10

7x=24

x=24/7

Troyanec [42]3 years ago
3 0

Answer:

x=3.43

Step-by-step explanation:

3(x-2)+4(x-5)=10

3x+6+4x-20=10

7x-14=10

7x=24

x=24/7

24/7=3.428571428571429(round to nearest hundredths)

x=3.43

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Olin [163]

Step-by-step explanation:

You should prolly subtract 2 from both sides first.

So you get, -|2/5x + 3| > -1 2/5

  • Add three to both sides
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  • Do -1 and 2/5 divided by 2/5 to get -3.5, x > -3.5

One of the answers is x > -3.5 but you need to switch the sign to less than and make the other side the opposite.

-( \frac{2}{5}x + 3 ) < 1 \frac{2}{5}

You see that, switched the sign and made whats on the right side opposite. So now solve for x again but with this new equation. Also, the parentheses are absolute value signs

Subtract 3 from both sides

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Step-by-step explanation:

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3 years ago
The newsstand at the corner of Manilla Avenue and GreenTree Rd. in GreenTree sells the daily edition of The Pittsburgh Press. Th
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Answer:

1 - NORM.DIST(625, 600, 15 ,TRUE)

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

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We use the norm.dist command.

NORM.DIST(x, mean, standard_dev ,cumulative)

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Mean of 600 copies and a standard deviation of 15 copies.

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You want to find the probability of selling more than 625 newspapers on any given day.

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1 - NORM.DIST(625, 600, 15 ,TRUE)

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<em>D. [ 6 10 </em>

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