Answer:
The perimeter is the distance all the way around the outside of a 2D shape. To calculate the perimeter, sum the lengths of all the sides.
Therefore, perimeter of the triangle = (2x - 8) + (2x + 5) + (30 - 3x)
Collect like terms: 2x + 2x - 3x - 8 + 5 + 30
Combine like terms: x + 27
Therefore, perimeter of triangle = x + 27
We are told that the perimeter is 25:
x + 27 = 25
Subtract 27 from both sides: x = -2
If x = -2, then the side with equation 2x - 8 = (2 x -2) - 8 = -12
A length cannot be negative, therefore the perimeter cannot equal 25.
Slope is m=-2/5 y- intercept is b=4 equation is y= 2/5x+4
not proportional
Negative slope
<h3>
Answer: 7/13</h3>
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Explanation:
We know that the marble selected is red, so we don't need to focus on the other colors.
7 red marbles are in urn B out of 2+7+4 = 13 total red marbles.
The probability the red marble came from urn B is therefore 7/13
Answer:
Q and R are complementary which means they add up to give 90°.
so we just need to add both linear equations and equals to 90.
(9x-6)+(8x-1)=90
17x-7=90
17x=97
x=5.7
no we just need to place 5.7 in place of X and find Q and R
9(5.7)-6=45.4° is Q
8 (5.7)-1= 44.6° is R
