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2 years ago

2 1/2 divided by 5 equals?? Options: 25/2 12 1/2 1/2 5/10

Mathematics

1 answer:

aivan3 [116]2 years ago

3 0

Answer:

1/2

Step-by-step explanation:

calculator, i guess I won't improve your skills :(

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What two numbers add up to 6 and multiply to 12?

GuDViN [60]

Erm

x+y=6
xy=12

x+y=6
y=6-x
sub back

xy=12
x(6-x)=12
6x-x^2=12
x^2-6x=-12
x^2-6x+12=0
quadratic formula
for
ax²+bx+c=0
$x= \frac{-b+/- \sqrt{b^2-4ac} }{2a}$

for
x²-6x+12=0
a=1
b=-6
c=12
and remember that √-1=i

$x= \frac{-(-6)+/- \sqrt{(-6)^2-4(1)(12)} }{2(1)}$
$x= \frac{6+/- \sqrt{36-48} }{2}$
$x= \frac{6+/- \sqrt{-12} }{2}$
$x= \frac{6+/- (\sqrt{-1})(\sqrt{12}) }{2}$
$x= \frac{6+/- (i)(2\sqrt{3}) }{2}$
$x= \frac{6+/- 2i\sqrt{3} }{2}$
x=3+/-i√3

the numbers are 3+i√3 and 3-i√3
no real numbers tho

7 0

3 years ago

Please help me! This math is killing me!

ankoles [38]

Answer:C

Step-by-step explanation:

8 0

2 years ago

What is the equivalent of 6x-8y?

liberstina [14]

Plug y=-5 into the equation
6x+8(-5)=-22
6x-40=-22
6x=-22+40
6x=18
x=3

6 0

3 years ago

Maddie tried to divide 160 stickers equally amongst herself and 5 friends. There was some stickers left over, so she kept them.

Nutka1998 [239]

Answer:

well you just get 32

Step-by-step explanation:

but i divide 16 divide 5 and got 3.2 so it might be an extra .2 stickers

8 0

2 years ago

Find mean of the data: 20,50,30,40,60,80.

Effectus [21]

Step-by-step explanation:

Mean= The data points that add up, or, the sum of all data points, divided by the number of data points, will give you the answer,

20+50+30+40+60+80 would be

100+40+60+80 which is

200.

Since there are 6 numbers in the problem, we do

200/6

which will give us

33.33 etc. (33.3333333333 on and on forever)

4 0

2 years ago