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Naddika [18.5K]

3 years ago

7

I need help! Its for math!

1 answer:

makvit [3.9K]3 years ago

8 0

Answer:

What do you need help with?

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What is the solution to the system of equations?

vivado [14]

Solution is in the attachment.

Answer: (5, -2, -3)

7 0

3 years ago

In parallelogram ABCD point K belongs to diagonal

Maksim231197 [3]

Answer:

$\dfrac{BE}{EC}=\dfrac{1}{3}.$

Step-by-step explanation:

Consider triangles BKE and DKA. In this triangles:

$\angle BKE=\angle DKA$ as vertical angles;
$\angle KBE=\angle KDA$ as alternate interior angles (lines BC and AD are parallel and BC is a transversal);
$\angle BEK=\angle DAK$ as alternate interior angles (lines BC and AD are parallel and BE is a transversal).

Thus triangles BKE and DKA are similar by AA theorem. Similar triangles have proportional sides lengths:

$\dfrac{BK}{KD}=\dfrac{BE}{AD}\Rightarrow \dfrac{1}{4}=\dfrac{BE}{AD}.$

Thus, $AD=4BE.$

Since AD=BC and BC=BE+CE, we have that 4BE=BE+EC, EC=3BE. Hence, the ratio BE to EC is

$\dfrac{BE}{EC}=\dfrac{BE}{3BE}=\dfrac{1}{3}.$

3 0

3 years ago

Hey guys I need help simplifying this radical expression please. ASAP please.

fiasKO [112]

Answer:

go on symbolab type the equation in and it gives u anwsers and work

Step-by-step explanation:

=\frac{4}{\left(x+2\right)\left(x+4\right)}

6 0

4 years ago

Solve for<br> y in terms of x. (Isolate y)<br> x-y=6

meriva

Y = x - 6

Please let me know if you need explanation.

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3 years ago

Oil is leaking from a broken pipeline into a lake. In the first 10 minutes, 400 gallons of oil have leaked, covering 8000 square

serg [7]

Answer:

800 square feet per minute

Step-by-step explanation:

7 0

3 years ago