Answer:
Step-by-step explanation:
1) y = 2x ----------(I)
x + y = 6 -----------(II)
Plug in y =2x in equation (II)
x + 2x = 6 {Add like terms}
3x = 6
x = 6/3
x = 2
Plugin x = 2 in (I)
y = 2*2
y = 4
<u>Check: </u>
LHS = x +y
= 2 + 4
= 6 = RHS
2)5x + 10y = 3 ------------(I)
x = (-1/2) y ------------(II)
Substitute x = (-1/2)y in (I)
Substitute y = (2/5) in equation (II)
<u>Check:</u>
Substitute x and y value in equation (I)
3) y - x = 3x + 2
y = 3x + 2 + x
y = 4x + 2 ---------------(I)
2x + 2y = 14 - y
2x + 2y +y = 14
2x + 3y = 14 ------------------(II)
Substitute y = 4x + 2 in equation (II)
2x + 3(4x +2) = 14
2x + 3*4x + 3*2 = 14
2x + 12x + 6 = 14
14x + 6 = 14
14x = 14 - 6
14x = 8
x = 8/14
x = 4/7
Substitute 'x' value in (I)
<u>Check:</u>
<u /><u />
Answer:
my school is starting from this tuesday,but i cant understand online classes. i really want physical class to start but it is not safe :(
Answer:The side opposite to the obtuse angle in a obtuse triangle is the largest side of that triangle.
Step-by-step explanation:
- The obtuse angle is an angle that is more than 90° and less than 180°.
- Any triangle cannot have two angles equal to or more than 90° .
So if a triangle has an obtuse angle then it will be the only obtuse angle in the triangle, rest of the other two angles must be smaller than that.
Also, we know that the side opposite to the lager angle is larger.
Therefore, the side opposite to the obtuse angle in a obtuse triangle is the largest side of that triangle.
Answer:
The probability that a site has no problem when the machine says that the pipe at the site has no issue is
0.905
Step-by-step explanation:
Confidence level = 95%
Error level = 5% (1 - 95%)
Since the probability that the machine says the pipe has a problem for a site that in fact has an issue = 95% and the pipe has a problem in 10% of the case, this means that the pipe has a problem in exactly 0.095 (10% * 95%).
Therefore, the probability that a site has no problem when the machine says that the pipe at the site has no issue = 0.905 (1 - 0.095).
Answer: 900$
Step-by-step explanation: