Answer:
x = 9
Step-by-step explanation:
Since you have a equilateral triangle all angles are 60°.
7x - 3 = 60
7x = 60+3
7x = 63
x = 63/7
x = 9
Answer:
my best answer is D
Step-by-step explanation: plant keep the soil in place to decrease runoff and infiltration
The equation representing the minimum and maximum scores |x-87| = 1.8
Given that the average score on a lab report is 87 points. All students score within 1.8 points of the average.
Let 'x' be the score of student. The maximum and minimum score of a student lies within 1.8 points of the average.
Then, maximum score of a student, x = 87+1.8
and minimum score of a student, x = 87-1.8
Combining these two equations, we get, x = 87 ±1.8
Or, more conveniently, |x-87| = 1.8 represents the minimum and maximum scores obtained by a student.
Learn more about average at brainly.com/question/20118982
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(x+3)(x+3) = x^2 -3 + 3x
x^2 + 3x + 3x + 9 = x^2 + 3x - 3
x^2 + 6x + 9 = x^2 + 3x - 3
6x + 9 = 3x - 3
3x + 9 = -3
3x = -12
x = -4
Check:
(-4+3)^2 = (-4)^2 - 3(1+4)
(-1)^2 = 16 - 3(5)
1 = 16-15
1 = 1 :)
Answer:
7
Step-by-step explanation:
The median is the number in the middle of a data set.
For example, in this question 7 is in the middle of the data set, thus making it the median.
