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Mumz [18]
4 years ago
15

If x+y=4 and x-y=a then what does x equal ​

Mathematics
1 answer:
pickupchik [31]4 years ago
3 0

Answer:

x = 2 + a/2

Step-by-step explanation:

You might be interested in
What is the range of the following set? 48, 47, 54, 55, 52, 48, 46, 53, 45
umka2103 [35]

Answer:

10

Step-by-step explanation:

the range is the difference between the biggest and the smallest number

55-45=10

8 0
4 years ago
Please help
user100 [1]

Answer:

Length of garden will be 30 metres.

Step-by-step explanation:

Let the Width of garden be x metres.

then,

Length of garden will be (x+6) metres.

Area = Length × Breadth

720 = x X (c+6)

720 = x²+6x

0 = x²+6x-720

As we can see above equation is a quadratic equation in the form of ax²+bx+C.

so,

=  \frac{ - b ±  \sqrt{{b}^{2} - 4ac}  }{2a}  \\ =   \frac{ - 6 ±   \sqrt{{6}^{2} - 4 \times 1 \times  - 720}  }{2}  \\ =    \frac{ - 6 ±  \sqrt{36 + 2880} }{2}  \\  =   \frac{ - 6 ±  \sqrt{2916} }{2}  \\  =   \frac{ - 6 ± 54}{2}\\= \frac{-6+54}{2} ... \frac{ - 6 - 54}{2}  \\  =  \frac{48}{2} ... \frac{ - 60}{2}  \\  = 24... - 30

One of the Roots of the Quadratic equation is 24 and other is -30.

And as we know width of any garden cannot be negative so the width of garden will be 24 metres.

As we got the width,

adding 6 to it will give us the Length,

So,

24 metres + 6 = 30 metres.

Length of the garden is 30 metres.

Hope It Helped You ;)

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@khuturr_

8 0
4 years ago
If the probability of a certain event is 63/92, what are the odds against the event happening?
Deffense [45]
29/92 you minus sixty three by ninety two to get the probability of the event not to occur.  
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3 0
4 years ago
Every year Ethan ears 38,428. Every year he spends 21,728 on expenses. How much money should Ethan have leftover?
svlad2 [7]

Answer:

16,700

Step-by-step explanation:

38,428

_

21,728

=

16,700

4 0
3 years ago
Solve by factoring. Check your answer.
Virty [35]
To factor, you split the equation so the factors multiply to get the whole equation.
(x-2)(x+2)

Then, interpret the factors.
The zeros can be found at (2,0) and (-2,0).
x=2, x=-2
3 0
3 years ago
Read 2 more answers
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