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Annette [7]
4 years ago
15

{2.5x−3y=−13 3.25x−y=−14 how do i solve this

Mathematics
2 answers:
lara31 [8.8K]4 years ago
4 0

Answer:

(x=4.0 Y=1.0)

Step-by-step explanation:

Here you go

Kay [80]4 years ago
4 0

Answer:

(- 4, 1 )

Step-by-step explanation:

Given the 2 equations

2.5x - 3y = - 13 → (1)

3.25x - y = - 14 → (2)

Multiplying (2) by - 3 and adding to (1) will eliminate the term in y

- 9.75 + 3y = 42 → (3)

Add (1) and (3) term by term

- 7.25x = 29 ( divide both sides by - 7.25 )

x = - 4

Substitute x = - 4 in either of the 2 equations and solve for y

Substituting in (1)

- 10 - 3y = - 13 ( add 10 to both sides )

- 3y = - 3 ( divide both sides by - 3 )

y = 1

Solution is (- 4, 1 )

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Which list shows these numbers in order from least to greatest
Rainbow [258]

Answer:

B) -5, -2.4, 20%, sqrt(9), 3pi

Step-by-step explanation:

sqrt(9) = 3

3pi = 3 * 3.14 = 9.42

20% = 0.2

Answer: B) -5, -2.4, 20%, sqrt(9), 3pi

4 0
3 years ago
Read 2 more answers
15/23 Marks
olganol [36]

Answer: a) 6, 0, 10       b) yellow/orange line  

Step-by-step explanation:

a) Plug the x in the y functions, y = 2x² + x

when x = -2, y = 2(-2)² + (-2) = 8 - 2 = 6

when x = 0, y = 2(0)² + (0) = 0 + 0 = 0

when x = 2, y = 2(2)² + (2) = 8 + 2 = 10

b) By looking the table, the equation has a point (0,0), only blue and yellow/orange line has the passed the point (0,0), so we delete the red line option.

And we choose a point (1,3), then only yellow/orange line has passed the point (1,3). So the yellow/orange line fits the equation.

3 0
3 years ago
How much should you invest at 2.1% simple interest in order to earn $85 interest in 7 months?​
Natasha_Volkova [10]

Answer:

$6938.78

Step-by-step explanation:

Interest = Principal x Rate x Time (in years)

let 'P' = Principal

85 = P × .021 × \frac{7}{12}

85 = .01225P

85 / .01225 = P

6938.78 = P

3 0
3 years ago
4 over 25 as a decimal ​
BabaBlast [244]

Answer:

0.16

Step-by-step explanation:

Simply divide  4 by 25

4/25=0.16

Hope this helps : )

5 0
3 years ago
7 + (-5) =______ pls help
Nata [24]

the answer would be 2

8 0
4 years ago
Read 2 more answers
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