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Galina-37 [17]
3 years ago
14

Simplify 9 - {x - (7 + x)}.

Mathematics
2 answers:
r-ruslan [8.4K]3 years ago
6 0
Let's simplify step-by-step.

<span><span>9−x</span>−<span>(<span>7+x</span>)

</span></span>Distribute the Negative Sign:

<span>=<span><span>9−x</span>+<span><span>−1</span><span>(<span>7+x</span>)

</span></span></span></span><span>=<span><span><span><span>9+</span>−x</span>+<span><span>(<span>−1</span>)</span><span>(7)</span></span></span>+<span><span>−1</span>x

</span></span></span><span>=<span><span><span><span><span><span>9+</span>−x</span>+</span>−7</span>+</span>−x

</span></span>Combine Like Terms:

<span>=<span><span><span>9+<span>−x</span></span>+<span>−7</span></span>+<span>−x

</span></span></span><span>=<span><span>(<span><span>−x</span>+<span>−x</span></span>)</span>+<span>(<span>9+<span>−7</span></span>)

</span></span></span><span>=<span><span>−<span>2x</span></span>+2

</span></span>Answer:

<span>=<span><span>−<span>2x</span></span>+<span>2</span></span></span>
Daniel [21]3 years ago
3 0
<span>9 - {x - (7 + x)}
= 9 - { x - 7 - x }
= 9 - {-7}
= 9 + 7
= 16

In short, Your Answer would be 16

Hope this helps!</span>
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VladimirAG [237]

Answer:

She must sell at least 18 necklaces to have a profit of at least 1,650 . In order to pay for her monthly expenses she needs to sell at least 43 necklaces. If she wants to have 1,650 remaining after paying for her monthly expenses she'll have to sell around 61 necklaces.

6 0
3 years ago
A spinner has three unusual sections: red, yellow, and blue.. The table shows the results of Nolan’s spins. Find the probability
Anika [276]

Answers:

  • Red = 1/3
  • Yellow = 7/15
  • Blue = 1/5

====================================================

Explanation:

Add up all the frequencies in the table to see that there are 120+168+72 = 360 spins total.

  • Of those 360 spins, 120 of them land on red. The probability of landing on red is 120/360 = (120*1)/(120*3) = 1/3
  • Since 168 land on yellow, this means the probability of landing on yellow is 168/360 = (24*7)/(24*15) = 7/15
  • Lastly, we have 72 occurrences of blue out of 360 total spins. The probability of landing on blue is 72/360 = (72*1)/(72*5) = 1/5
4 0
3 years ago
A hallway is 9 yards how long is the inches in the hallway
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9 times 1=9
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7 0
4 years ago
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Joel has a goal to practice is clarinet for 4 1/2 hours per week the list below shows the number of hours Chihuahuas practice so
Natasha_Volkova [10]

Complete question:

Joel has a goal to practice his clarinet for 4 1/2 per week. The list below shows the number of hours Joel has a practiced so far for the week. Monday 1 1/2 hours Wednesday 1 1/4 hours Thursday 1 hour How many more hours does he need to practice this week to meet his goal

Answer: 3/4 hours

Step-by-step explanation:

Target hours = 4 1/2 hours = 9/2 hours

Number of hours so far :

(1 1/2 + 1 1/4 + 1) = (3/2 + 5/4 + 1) hours

Total so far :

L. C. M of denominator = 4

(6 + 5 + 4) /4 = 15/4

Number of hours left to meet his target equals :

Target hours - total so far

( 9/2 - 15/4)

L. C. M of denominator = 4

(18 - 15) / 4 = 3/4 hours

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7 0
4 years ago
NEED HELP ASAP!!!!!!!!!!
WITCHER [35]

Answer:

the question is missing

Step-by-step explanation:

4 0
3 years ago
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