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Mnenie [13.5K]
3 years ago
10

X=-3y-5 3x+9y=7 how can u solve this?

Mathematics
2 answers:
pentagon [3]3 years ago
5 0

Answer:


Step-by-step explanation:


yulyashka [42]3 years ago
5 0

Answer:

No solution

Step-by-step explanation:

x=-3y-5.....(1)

3x+9y=7.....(2)

from equation (2)

3(-3y-5)+9y=7

combine

-9y-15+9y=7

collect the like terms

-9y+9y=7-15

0=-8

No solution


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Nataly [62]

Answer:

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Step-by-step explanation:

For this question you would follow the BIDMAS rule - (Brackets, Indices, Division, Multiplication, Addition, Subtraction.)

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4 0
4 years ago
Read 2 more answers
How do I find the y value for point I such that DI and EI form a 3:5 ratio.
liraira [26]
3:5 ratio mean there are 8 "parts" (3 + 5 = 8)

The distance between the x-coordinates is |-3 - 5| = 8.
So each "part" is 8/8 = 1 unit long in the x-direction. 
You want I to be 3(1) = 3 units from D, so the x-coordinate of I is -3 + 3 = 0.

Same deal for y.
|2 - 5| = 3 is the distance between D and E
Each part is 3/8.
3(3/8) = 9/8
2 + 9/8 = 25/8

So the point I is (0, 25/8)


6 0
4 years ago
Read 2 more answers
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