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Liula [17]
2 years ago
14

Use the Distributive Property to expand 4(x+3)

Mathematics
2 answers:
vladimir1956 [14]2 years ago
8 0

Answer:

4x +12

Step-by-step explanation:

Distributive property: a*(b + c) = (a *b)+(a *c)

Here, a = 4 ; b = x and c = 3

4*(x + 3) = 4*x + 4*3

             = 4x + 12

Serga [27]2 years ago
6 0

Answer:

4x+12

Step-by-step explanation:

4(x+3)=4x+12.

You use the distributive property by multiplying both numbers in the parentheses by 4

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Tiffany used her debit card to buy lunch for $9.72 on Wednesday. On Thursday, she deposited $9.72 back into her account. What is
Wittaler [7]
There is no overall increase or decrease in her bank account.

She spent $9.72 and later deposited the same exact amount. 

So the over increase or decrease was $0.

I hope I've helped you! If you have any more questions let me know!

5 0
3 years ago
A gift shop sells 140 wind chimes per month at $90 each. The owners estimate that for each $5 increase in price, they will sell
guapka [62]

Answer: $95

Step-by-step explanation:

Te new price will be 90 + 5x, if the price increases "x" times

The number of wind chimes sold per month will become 140 - 7x

\begin{aligned}&\text {Revenue, } \mathrm{R}(\mathrm{x})=(90+5 \mathrm{x})(140-7 \mathrm{x}) \\&R^{\prime}(x)=5(140-7 x)-7(90+5 x) \\&R^{\prime}(x)=700-35 x-630-35 x \\&R^{\prime}(x)=70-70 x=0 \\&70 x=70 \\&x=1\end{aligned}

Therefore, if the price becomes (90 + 5(1)) = $95 per wind chime, then the revenue will be maximum

6 0
3 years ago
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7 0
3 years ago
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I need help understanding this and help with the problems...
Pavel [41]

1. 15+37=?

  • 15=10+5 (given on the diagram)
  • 37=30+7 (given on the diagram)
  • add digits to digits 5+7=12=10+2
  • add tens to tens 10+30+10=50
  • add tens and digits 50+2=52.

2. 22+49=?

  • 22=20+2 (given on the diagram)
  • 49=40+9 (given on the diagram)
  • add digits to digits 2+9=11=10+1
  • add tens to tens 20+40+10=70
  • add tens and digits 70+1=71.

3. 38+26=?

  • 38=30+8 (given on the diagram)
  • 26=20+6 (given on the diagram)
  • add digits to digits 8+6=14=10+4
  • add tens to tens 30+20+10=60
  • add tens and digits 60+4=64.

Answer: 1) 52; 2) 71; 3) 64.

7 0
3 years ago
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PLEASE HURRY PLEASSEEEE i need help
Arisa [49]

Answer:

5

Step-by-step explanation:

We cannot repeat an x value for the relation to be a function

Since x=3 ,4, 7 are already used

We must let x=5

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