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g100num [7]
2 years ago
10

The product of a number and three increased by four is the same as fourteen less than the product of twelve and a number

Mathematics
2 answers:
Deffense [45]2 years ago
3 0

Answer:

Let the number be x.

3*x+4=12*x-14

3x+4=12x-14

Subtract 4 from both sides:

3x+4-4=12x-14-4

3x=12x-18

Subtract 12x from both sides:

3x-12x=12x-18-12x

-9x=-18

Divide both sides by -9:

\frac{-9x}{-9} =\frac{-18}{-9}

x=2

The number is 2.

kondaur [170]2 years ago
3 0
I believe the number is 2 or -2
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1/2 x + 2 = 1/6 x - 1 =
aksik [14]

Step-by-step explanation:

1/2x+2−1/6x=1/6x−1−1/6x

1/3x+2=−1

1/3x+2−2=−1−2

1/3x=−3

3*(1/3x)=(3)*(−3)

x=−9 <- ANSWER

3 0
3 years ago
What value of X makes the equation true?<br><br> 12x-15=16-3x
gogolik [260]
X= 2 1/15 or 31/15.
4 0
3 years ago
There are 8 big fish for every___ small fish.
taurus [48]
There are 8 big fish for every 10 small fish, ..... 5 small fish.
4 0
3 years ago
When Cullen cleaned behind his dresser, he found 73 cents, all in nickels and pennies. There were 25 coins. How many were nickel
Georgia [21]
Let n = number of nickels, and p = number of pennies.
The number of coins is 25, so we get this equation.
n + p = 25

The value of the coins is 0.05 per nickel, and 0.01 per penny.
0.05n + 0.01p = 0.73

Now you have a system of equations.

n + p = 25
0.05n + 0.01p = 0.73

Solve the first equation for n:
n = 25 - p

Now substitute into the second equation.

0.05(25 - p) + 0.01p = 0.73

1.25 - 0.05p + 0.01p = 0.73

-0.04p = -0.52

p = 13

There were 13 pennies.
Now we substitute 13 for p in n + p = 25 to find out the number of nickels.

n + 13 = 25
n = 12

There are 13 pennies and 12 nickels.

Check: 13 pennies and 12 nickels does total 25 coins.
13 * 0.01 + 12 * 0.05 = 0.13 + 0.60 = 0.73
The value is $0.73.
Our answer is correct.
5 0
3 years ago
I need much help plz
salantis [7]

Answer:

77

Step-by-step explanation:

Rate as BRAINLIEST

x + 9y

we plug in x and y

5+9(8)

=5+72

= 77

3 0
3 years ago
Read 2 more answers
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