Answer: Look below
Step-by-step explanation:
2(2x-4y) = 4
1(-4x+6y)= -4
4x-8y=4
-4x-6y=-4
-14y=0
y=0
(Hopefully that helps!!)
The length of the leg 's' will be equal to 5 units so the correct answer is option A.
<h3>What is trigonometry?</h3>
Trigonometry is the branch of mathematics that set up a relationship between the sides and angle of the right-angle triangles.
Given that the triangle is having two angles of 45 and the hypotenuse is 5√2.
The value of leg s will be calculated as follows:-
Sin 45 = Perpendicular / Hypotenuse
Sin 45 = s / 5√2
s =
s = 5
Therefore the length of the leg 's' will be equal to 5 units so the correct answer is option A.
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The <em>correct answers</em> are:
Top circle: 34
Bottom left: 9
Bottom right: 21
Explanation:
Let the top circle be x, let the bottom left circle be y, and the bottom right circle be z.
Following the diagram, we have the following equaitons:
x+y = 43
y+z = 30
x+z = 55
Taking the first two equations as a system, we will eliminate y:
We will subtract the bottom equation from the top:
We will now take this and the last equation as a system; this time, we will eliminate z by adding the two equations:
Divide each side by 2:
2x/2 = 68/2
x = 34
Substitute this into the first equation:
x+y = 43
34+y = 43
Subtract 34 from each side:
34+y-34 = 43-34
y = 9
Substitute this into the second equation:
y+z = 30
9+z = 30
Subtract 9 from each side:
9+z-9 = 30-9
z = 21
Answer:
7 students have neither blue nor brown hair.
Step-by-step explanation: