Answer:
25% decrease
Step-by-step explanation:
Answer:
-
Step-by-step explanation:
This is not solvable, because there is only one equation without an inequality or equal sign.
First of all u draw a number line, then u labbel it, then go to zero, n count 6 negative steps, ok in simple terms move backwards thrice
Answer:
r=1 and t= -21/2.
Step-by-step explanation:
Two vectors are parallel if both are multiples. That is, for a vector (x,y), the parallel vector to (x,y) will be of the form k(x,y) with k a real number. Then,
a) (8r, -2) = 2(4r,-1). Then, we need to have that r=1, in other case the first component wouldn't be 4 or the second component wouldn't be -1 and the vector (8r,-2) wouldn't be parallel to (4, -1).
b) for the case of (8t, 21) we need -1 in the second component and 4 in the first component, then let t= -21/2 to factorize the -21 and get 4 in the fisrt component and -1 in the second component.
. In other case, the vector (8t, 21) wouldn't be parallel to (4,-1).
This is where you would use the pythagorean theorem
a² + b² = c²
remember that a and b are the 2 legs, and c is the hypotenuse
18² + 80² = c²
324 + 6400 = c²
6724 = c²
√6724 = c
82 = c
the length of the hypotenuse is 82cm