Slope = (10 - 1)/(-2-1) = 9/-3 = -3
pass thru (1,1)
y = mx + b
1 = -3(1) + b
1 + 3 = b
so b = 4
equation: y = -3x + 4
Answer:
c) 4x = 20
x = 5
Step-by-step explanation:
Let the number of people in a van = x
Number of people in 4 vans = 4 *x = 4x
4x = 20
Divide both sides by 4
x = 20/4
x = 5
Answer:
A. 5 < AC < 10
Step-by-step explanation:
If ∆ABC is a right angled triangle, we use the Pythagoras formula:
c² = a² + b²
Where c = longest side
When given sides AB, AC and BC, the formula becomes:
AB² = AC² + BC²
Where AB = Longest side
In the question,
AB = 10 and BC = 5.
10² = AC² + 5²
AC² = 10² - 5²
AC² = 100 - 25
AC² = 75
AC = √75
AC = 8.6602540378
Therefore, the expression that is always true = A. 5 < AC < 10
Answer:
All of the above
Step-by-step explanation:
In Pythagorean Theorem, a and b are the short and long leg, and c is the hypotenuse.
