The answer is √32 because the triangle is an isosceles triangle meaning two sides are the same length so two sides are 4 and then you use the Pythagorean theorem to find the value of r
Answer:
multiply lol
Step-by-step explanation:
Answer:
Look at the whole numbers and not the tenths hundreds and stuff. 1,2,3.25 and then fraction.
Step-by-step explanation:
Answer:
y = -5/4x -8
Step-by-step explanation:
There is a y-intercept of -8
There is a slope of -5/4
Answer:
x^2 + 5x - 84 = 0
x = 7
Step-by-step explanation:
let the sister's age = y
sister's age (y) = 5 + x equation 1
xy = 84 equation 2
Make y the subject of the formula in equation 2
y = 84/x
equate equation 1 and 2
84/x = 5 + x equation 3
Multiply equation 3 by x
84 = 5x + x^2
x^2 + 5x - 84 = 0
tjis can be solved using quadratic equation
x^2 -7x + 12x -84 = 0
x(x + 12) -7(x + 12)
x = 7 or - 12
age cant be negative so his age is 7