Answer: 20 cm
Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain a variable.
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Hi my lil bunny!
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Lets do this step by step.
This is the trigonometric form of a complex number where
is the modulus and
is the angle created on the complex plane.

The modulus of a complex number is the distance from the origin on the complex plane.
where 
Substitute the actual values of a = -5 and b = -5.

Now Find
.
Raise - 5 to the power of 2.

Raise - 5 to the power of 2.

Add 25 and 25.

Rewrite 50 as 5^2 . 2 .

Pull terms out from under the radical.

The angle of the point on the complex plane is the inverse tangent of the complex portion over the real portion.

Since inverse tangent of
produces an angle in the third quadrant, the value of the angle is
.

Substitute the values of
and
.

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Hope this helped you.
Could you maybe give brainliest..?
❀*May*❀
Answer:
-5.6k-7
Step-by-step explanation:
you'd start by multiplying 6 by everything in the first pair of parentheses:
6(-2.1k-2)= (-12.6k-12)
then you'd add the like terms together:
(-12.6k-12)+(7k+5)= -5.6k-7
The rate of each train of the northbound train traveled 10 miles per hour faster than the southbound train 26 miles per hour.
<h3>what is speed?</h3>
Speed is the time rate at which an object is moving along a path
Let the speed of southbound train is x miles/hour
so, northbound train has speed of x+10 miles/hour.
then, Speed of both train = Total distance/ total time
(x+10+x)=210/5
2x+10= 210/5
2x+10= 42
2x= 32
x= 16 miles per hour (southbound train)
northbound train: 16+10=26 miles per hour
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The solution of simultaneous equations is x=4 and y = -1.
<h3>What are
Simultaneous equations?</h3>
Simultaneous equations are two or more algebraic equations with the same unknown variables and the same value of the variables satisfies all such equations.
We can solve simultaneous equations by various methods. here we will solve it by elimination method.
Here we have two simultaneous equations
3x -2y = 14 --- (i)
and 4x + 3y = 13---(ii)
Now multiplying (i) by 3 and (ii) by 2 we get
9x -6y = 42 and 8x + 6y = 26.
Now adding both we get
17x = 68 ⇒ x = 68/17 ⇒ x = 4.
Substituting the value of x in (i), we get
3*4 - 2y = 14 ⇒ -2y = 14-12 = 2 = -2/2 ⇒ y = -1.
Therefore, the values of x and y are 4 and -1 respectively .
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<u>NOTE</u> : The question given here is not complete. The complete question is given below.
Question: What is the solution of the simultaneous equations 3x- 2y= 14 and 4x+ 3y= 13?.