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vichka [17]
4 years ago
11

If PR = 4x – 2 and RS = 3x – 5, which expression represents PS?

Mathematics
1 answer:
seropon [69]4 years ago
3 0

Answer:

7x-7

Step-by-step explanation:

We have been given that PR=4x-2 and RS=3x-5. We are asked to find the expression that represents length of PS.

We know that PS=PR+RS.

Upon substituting our given values in above equation, we will get:

PS=4x-2+(3x-5)

PS=4x-2+3x-5

PS=4x+3x-2-5

PS=7x-7

Therefore, the expression 7x-7 represents length of PS.

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Which ordered pair (a, b) is the solution to the given system?
guajiro [1.7K]

Answer:

2a - 5b = 1

3a + 5b = 14

Let's solve this system using elimination. Add the equations together to cancel the b-terms, then solve for a.

   2a - 5b = 1

  3a + 5b = 14

+___________

   5a - 0 = 15

        5a = 15

          a = 3

Next, plug 3 for a into either of the equations and solve for b.

 2a - 5b = 1

2(3) - 5b = 1

   6 - 5b = 1

      - 5b = -5

          b = 1

Lastly, check all work by plugging both values for their respective variables.

    2a - 5b = 1

2(3) - 5(1) = 1

        6 - 5 = 1  --  This is true

    3a + 5b = 14

3(3) + 5(1) = 14

        9 + 5 = 14  --  This is true

The solution to the system of equations is (3, 1).

Step-by-step explanation:

3 0
3 years ago
From the grocery store you need to purchase 1/2 lb cheese, 2 lbs sliced ham, 2 loaves of bread, 3 bags of potato chips, and 2 co
Akimi4 [234]
Hello.

1.49500 + 8.58 +4.98 + 4.99 + 6.78 = 26.82500.
26.82500 - 3 = 23.82500. 
4 / 100 = 0.04.
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23.82500 - 0.953 = 22.87200.

So your total purchase is 22.87200.

Have a great day! :)


6 0
3 years ago
Read 2 more answers
Which inequailities has no solution? I need this to be answer ASAP!
Nadusha1986 [10]
Let's simplify them top to bottom.

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5x + 12 < -3
5x < -15
x < -3
This one checks out.


3 + 4x <= 2(1 + 2x)
4x + 3 <= 4x + 2

This is a problem. In no world is 4x + 3 ever less than or equal to 4x + 2. This one has no solution.


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3 years ago
Simplify the polynomial expressions by combining like terms, and then multiply the resulting binomial expressions to find their
Lesechka [4]
For this case we have the following expression:
 (8x - 9 - 2x) (15 + 5x - 5)&#10;
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4 years ago
Find value of x from the given figure
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  • I an not sure but i hope it will help you.
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