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lesya692 [45]
3 years ago
11

Solve the simultaneous equationx + y = 4,3x + y = 8​

Mathematics
1 answer:
worty [1.4K]3 years ago
7 0

Answer:

x=2, y=2

Step-by-step explanation:

x+y=4

3x+y=8

3x-x=4

2x=4

x=4/2

=2

2+y=4

y=4-2

=2

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Find the values of a and b such that x^2-2x+2=(x-a)^2+b
vekshin1

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a = 1, b = 1

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6 0
2 years ago
The formula to find the area of the walls of a rectangular room is A=2h (l+b), h is wall height, l is room length, and b is room
Allisa [31]
Problems are very often written in a confusing way. This one couldn't possibly have been
written any more clearly.  Sooner or later, you have to stop telling yourself that you have
no clue, settle down, and carefully read the words that are right there on the page.

I'll tell you one more detail that's not in the problem:  "breadth" means "width".
 
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=>  Area of the walls = (2 x height) x (length + width)

=>  length = 8m
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Area = (2 x height) x (length + width)

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Do the arithmetic inside the parentheses:

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Do the multiplication:

Area = <u>70 m² .</u>

You will never see a problem that comes any closer to answering itself <em>for </em>you.
8 0
3 years ago
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