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LekaFEV [45]
4 years ago
15

8÷15.95 thx for helping

Mathematics
1 answer:
umka2103 [35]4 years ago
4 0

the answer is 0.501567398

hope this helps!

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Using substitution or elimination 3y=-1/2x+2. y=-x+9
I am Lyosha [343]

Answer:

(x, y) = (10, - 1)

Step-by-step explanation:

given the 2 equations

3y = - \frac{1}{2} x + 2 → (1)

y = - x + 9 → (2)

substitute y = - x + 9 into (1)

3(- x + 9) = - \frac{1}{2} x + 2

- 3x + 27 = - \frac{1}{2} x + 2

add \frac{1}{2} x to both sides

- \frac{5}{2} x + 27 = 2 ( subtract 27 from both sides )

- \frac{5}{2} x = - 25

multiply both sides by 2 and divide by - 5

x = 10

solution (10, - 1)


4 0
4 years ago
If a and b represent positive real numbers, what is the inequality when solved for V?
Nutka1998 [239]

Answer:

C. v < (3au - 60)/2b

Step-by-step explanation:

Given

au/2 - bv/3 > 10

Required

Solve for v

We start by rewriting the inequality

au/2 - bv/3 > 10 becomes

½(au) - ⅓(bv) > 10

Multiply both sides by 6

6 * ½(au) - 6 * ⅓(bv) > 6 * 10

3au - 2bv > 60

Make -2bv the subject of formula

-2bv > 60 - 3au

Multiply both sides by -½

[When multiplying or dividing an inequality by a negative number, the sign of the inequality will change]

-½ * -2bv < -½(60 - 3au)

bv < -½(60 - 3au)

bv < ½(3au - 60)

bv < (3au - 60)/2

Divide both sides by b

v < (3au - 60)/2b

Option C is correct

8 0
4 years ago
Select all coordinate pairs that are solutions to the inequality 5x + 9y &lt; 45.
Dmitry [639]
F (5,9)
You would divide everything by 5 then 9 over 5
3 0
3 years ago
Which is greater 1/3 or 30%
Brilliant_brown [7]
30% = 30/100 = (30 x 3)/(100 x 3) = 90/300

1/3 = (1 x 100)/(3 x 100) = 100/300

As    90/300 < 100/300

Therefore 30% < 1/3
4 0
4 years ago
Two cars got an oil change at the same auto shop. The shop charges customers for each quart of oil plus a flat fee for labor. Th
zvonat [6]

The labor fee is $13.55 and each quart of oil is $2.25

Step-by-step explanation:

Let,

x be the amount of each quart of oil

y be the amount of labor fee

According to given statement;

5x+y=24.80        Eqn 1

7x+y=29.30        Eqn 2

Subtracting Eqn 1 from Eqn 2

(7x+y)-(5x+y)=29.30-24.80\\7x+y-5x-y=4.50\\2x=4.50

Dividing both sides by 2

\frac{2x}{2}=\frac{4.50}{2}\\x=2.25

Putting x=2.25 in Eqn 1

5(2.25)+y=24.80\\11.25+y=24.80\\y=24.80-11.25\\y=13.55

The labor fee is $13.55 and each quart of oil is $2.25

Keywords: linear equation, subtraction

Learn more about subtraction at:

  • brainly.com/question/116715
  • brainly.com/question/11680012

#LearnwithBrainly

6 0
3 years ago
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