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KengaRu [80]
3 years ago
9

3k- 10k + 7 factoring

Mathematics
1 answer:
arsen [322]3 years ago
7 0

Answer:

7(−k + 1)

Step-by-step explanation:

3k−10k + 7

= −7k + 7

= 7(−k + 1)

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An owner wants to discount his pizza from $15 to $14.25, how much percent does he need to discount?
IrinaVladis [17]

Answer:

5%

Step-by-step explanation:

Amount of money that is discounted

= $15 - $14.25

$0.75

Percentage that needed to be discount

=(0.75/15) * 100%

= 5%

Thus, owner needs to discount 5% to discount his pizza from $15 to $14.25.

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A website had 2,135,789 hits .what is the value of the digit 3
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It is on the ten thousands value

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Divide the decimal 134.55 by the decimal 0.5
lina2011 [118]

Answer:

269.1

Step-by-step explanation:

8 0
2 years ago
Paul has 12 coins in his pocket, consisting entirely of dimes and quarters. If he has a total of 195 cents in coins, how many co
anyanavicka [17]

Let x be the number of dimes

and y be the number of quarters

Total number of coins = 12

So number of dimes + number of quarters = total number of coins

x + y = 12 ---------> equation 1

We know, 1 Quarter = 25 cents, 1 Dime = 10 cents, total cents = 196

y quarters = 25y cents , x dimes = 10x cents

x dimes + y quarters = 195 cents

10x + 25y = 195 -----------> equation 2

Now solve both equations

x + y =12, we solve for y by subtracting x on both sides

y = 12-x

Now substitute y in second equation

10x + 25(12-x) = 195

10x + 300 -25x = 195 (combine like terms)

-15x + 300 = 195 (subtract 300 on both sides)

-15x = -105 ( divide by -15)

x=7

y= 12-x

y=12-7 = 5

The number of dimes = 7

Number of quarters = 5






8 0
3 years ago
mr. bailey purched some groceries that cost d dollors. he paid$50 bills. write an expression for the amount of the cange he will
JulijaS [17]
Let C present amount of change
The expression is C = 50 - d
5 0
3 years ago
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