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andrezito [222]
2 years ago
15

(1) Solve this system using the substitution method: y = x – 1; 4x – 3y = 6

Mathematics
1 answer:
ValentinkaMS [17]2 years ago
3 0

Answer:

(1)x=3, y=2

(2)x=19, y=31

Step-by-step explanation:

(1)

4x-3(x-1)=6

4x-3x+3=6

x+3=6

x=3

(2)

.76x+3.68y=128.52

x+y=50

.76x+3.68(50-x)=128.52

.76x+184-3.68x=128.52

.76x-3.68=-55.48

-2.92x=-55.48

x=19

19+y=50

y=31

This took so much work....  I hope I helped you well.

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Write the percent as a fraction or mixed number in simplest form. 72.5
barxatty [35]

Answer:

29/40

Step-by-step explanation:


6 0
3 years ago
A gallon of gasoline cost 2.96. Your car has a 25 gallon gas tank and can travel 28.8 miles on each gallon of gasoline. How much
geniusboy [140]
<h2>Greetings!</h2>

Answer:

It would cost 47.36

Step-by-step explanation:

First, you need to find out how many gallons are needed to fill the tank. To do this, simply multiply 25 by the fraction that is how much is already in there:

25 x \frac{3}{8} = 9.375

So that means that there is 9.375 gallons already in the tank. To find the amount needed to fill the tank:

25 - 9.375 = 15.625

So 15.625 gallons are needed, rounded up to 16 gallons because you cannot get a decimal value of gallons.

That means that 16 x the price = the amount to fill the tank:

16 x 2.96 = 47.36

So it would cost 47.36 to fill the tank!


<h2>Hope this helps!</h2>
4 0
3 years ago
Factor completely<br> 2c^3-22c^2+48c
Bingel [31]

Answer:

2c(c - 3)(c - 8)

Step-by-step explanation:

Hello!

Factor:

  • 2c³ - 22c² + 48c
  • 2c(c² - 11c + 24)

Think: What two numbers multiply to 24, and add up to -11?

Answer: -8 and -3

Split up the -11c into -8c and -3c:

  • 2c(c² - 8c - 3c + 24)      (factor each pair)
  • 2c( c(c - 8) - 3(c - 8))  
  • 2c(c - 3)(c - 8)
7 0
2 years ago
Which of these is a simplified form of the equation 7y + 8 = 9 + 3y + 2y?​
Lera25 [3.4K]

Answer:

7y +8 is the answer for the question

4 0
3 years ago
Read 2 more answers
Which expression shows a way to find 20% of 950? Please I need help thanks.
wolverine [178]

Answer:

the answer of the expression is 190

Step-by-step explanation:

Given expression as :

20 % of 950

Or, \frac{20}{100} times 950

Or, \frac{20}{100} × 950

Or, 20 × \frac{950}{100}

or, 20 × 9.5

∴ 190

7 0
3 years ago
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