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3 years ago

What is the midpoint of (a+2b,b-a) and (a-2b,3a+b)

Mathematics

1 answer:

Sever21 [200]3 years ago

4 0

Answer:

(a, a+b).

Step-by-step explanation:

Midpoint = [(a+2b + a-2b)/2 ], [b-a + 3a+b]/2

= (2a/2, (2a+2b)/2

= (a, a+b).

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Solve each system of equations using substitution. x×y=5 4+y=-x

valina [46]

Answer:

Step-by-step explanation:

$\left \{ {{xy=5} \atop {4+y=-x}} \right.\\\\ \left \{ {{xy=5} \atop {x=-4-y}} \right.\\\\=> \left \{ {{(-4-y)y=5} \atop {x=-4-y}} \right. \\\\ \left \{ {{-y^{2}-4y =5} \atop {x=-4-y}} \right. \\\\ \left \{ {{y^{2}+4y+5 =0} \atop {x=-4-y}} \right.$

because y² + 4y + 5 = (y+2)² + 1 > 0, ∀ y ∈ R

=> y² + 4y + 5 = 0 is unreasonable

=> no solutions

8 0

3 years ago

Pipe A can fill a swimming pool in 12 h. Working with another Pipe B, it only takes 3h How long would it take Pipe B working al

MatroZZZ [7]

My guess is 9 hours, because since pipe a takes 12 hours and with pipe b it takes 9, it's 12-9=3 I think.

5 0

4 years ago

The surface area of the box of cereal displayed below is 2x^2+48x+88.What is the value of x if the box of cereal has an area of

pashok25 [27]

<h2>Value of x is 2 </h2>

Step-by-step explanation:

Surface area is given by 2x²+48x+88

We need to find x when surface area is 192.

A = 2x²+48x+88

2x²+48x+88 = 192

2x²+48x- 104 = 0

x²+ 24x - 52 = 0

( x - 2 ) ( x + 26 ) = 0

x = 2 or x = -26 not possible

Value of x is 2

8 0

4 years ago

What is 30 percent of 30?

Pavel [41]

Multiply 30 by 30%.

=30 * 30%
convert % to decimal (30% ÷ 100)

=30 * 0.30
=9

ANSWER: 9 is 30% of 30.

Hope this helps! :)

8 0

3 years ago

Read 2 more answers

Need Answer ASAP ONLY 5 min.

Verizon [17]

Answer:

b is your answer hope it helps

5 0

3 years ago

Read 2 more answers