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stiks02 [169]
3 years ago
12

Look at this system of equations. 2x +5 =9.5 3x + 5y =10.5 What is the value of x+y

Mathematics
1 answer:
stiv31 [10]3 years ago
6 0

Answer:

x = 2.25 y = 0.75

Step-by-step explanation:

2x = 9.5- 5

2x = 4.5

x = 4.5 ÷ 2

x = 2.25

know we now what is x so in the second one we evaluate x

3(2.25) + 5y = 10.5

6.75 + 5y = 10.5

5y = 10.5- 6.75

5y = 3.75

y = 3.75 ÷ 5

y = 0.75

that's it !

if you want to check your answer you can evaluate x and y so it will be like

2×2.25 + 5

= 4.5 + 5 = 9.5

and

3× 2.25 +5×0.75

= 6.75 + 3.75 = 10.5

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natali 33 [55]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
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inysia [295]

Answer:

The length of rectangle is 7 cm and width is 2 cm.

Step-by-step explanation:

Given that:

Area of rectangle = 14 square centimeters

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L = 5W - 3

Area of rectangle = Length * Width

14 = (5W-3)*W

14=5W^2-3W\\5W^2-3W-14=0

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The length of rectangle is 7 cm and width is 2 cm.

4 0
3 years ago
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Dmitriy789 [7]

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From the data above:

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From the data above:

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5 0
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