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Natali5045456 [20]
3 years ago
5

{5x−y=−21 What is the solution of the system?

Mathematics
1 answer:
Montano1993 [528]3 years ago
8 0

Answer:

Step-by-step explanation:

5x - y = -21

y = 5x + 21

Substituting into:

x + y = -3

x + 5x + 21 = -3

6x = -24

x = -4

y = 5(-4) + 21

y = 1

Solution: (-4,1)

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Help please ! Need the answers
son4ous [18]

Answer:

x=\frac{-5+\sqrt{13}}{6} or x=\frac{-5-\sqrt{13}}{6} (decimal: x=-0.23240 , x=-1.43425)

Step-by-step explanation:

a = 3, b = 5, c = 1

plug into quadratic formula

8 0
3 years ago
An item is regularly priced at $70. Keiko bought it on sale for 80% off the regular price. How much did Keiko pay? $
pantera1 [17]

Answer:

$14

Step-by-step explanation:

80% of $70 is $14, saving him $56

8 0
3 years ago
Read 2 more answers
Shenise is a star player for her women's basketball team. She has injured her ankle, and it is doubtful that she will be able to
Sladkaya [172]

Answer:

<u>The correct answer is that it's expected the team will score 72 points.</u>

Step-by-step explanation:

1. This is the information given in the question:

When Shenise can play the team scores 91 points

Without Shenise the team just scores 60 points

Therefore, when Shenise is at her best, her 100%, she scores 31 points by herself. When she's not in conditions, she can't play.

2. For finding out how many points Shenise can score if she plays, we use this formula:

If Shenise is at her 100%, she scores 31 points, how many points can she score if she's at 40% chance of playing?

Points upcoming game = 31 * 40 / 100

Points upcoming game = 1,240 / 100

Points upcoming game = 12.40 = 12 (rounding to the nearest whole number)

3. If Shenise plays, she can score 12 points. Now, we can calculate how many points her team will score.

Points the team scores when Shenise doesn't play = 60

Points the team will score if Shenise plays = 60 + 12 = 72

<u>The team will probably score 72 points with a 40% chance that Shenise will play the upcoming game</u>

4 0
3 years ago
At an apple picking farm, you are allowed to pick up to 25 apples a day and you have already picked 12. Find the possible number
SashulF [63]

Answer:

13

Step-by-step explanation:

25d - 12 = ?

1 day = 25(1) - 12 = 13

12 + 13 = 25

5 0
3 years ago
What is the answer? Please explain.<br><br> (5x^2 -3) + (2x^2 - 3x^3)
ale4655 [162]

Answer:

(5x^2-3) +(2x^2-3x^3)

=3x^3+5x^2+2x^2-3

= 3x^3 +7x^2 -3

Step-by-step explanation:

hope this is correct cuz I'm not an expert...

5 0
3 years ago
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