Answer:
x = 4 is the solution
Step-by-step explanation:
given = x ( square both sides )
x + 12 = x² ( rearrange into standard form )
x² - x - 12 = 0 ← in standard form
(x - 4 )(x + 3 ) = 0 ← in factored form
equate each factor to zero and solve for x
x - 4 = 0 ⇒ x = 4
x + 3 = 0 ⇒ x = - 3
Insert these values into the original equation, and if both sides are equal, and those are the solutions.
x = 4 : = = 4 = x ← correct
x = - 3 : = = 3 ≠ - 3 ← false
the answer is x = 4
Answer: Hi your answer is
2:2 or 1000:1000
Step-by-step explanation:
Tina should buy 6 packs of aa batteries and 2 packs of d batteries. the cost of each is given as.
6 packs of aa batteries = 6x3 = $18
2 packs of d batteries = 2x4 = $8
total cost = 18 +8 = $26
and aa batteries pack are 3 times greater than d batteries.
Answer:
Perimeter = 78.7 inches
Step-by-step explanation:
From the given question, applying the Pythagoras theorem to one of the congruent triangles formed, we have;
= 
+ 
= 
+ 
=841 + 81
= 922
hyp = 
= 30.3645
The perimeter of the triangle can be determined as;
perimeter = 
+ 
+ 
= 30.3645 + 18 + 30.3645
= 78.729
The perimeter of the triangle = 78.7 inches
Earl runs 1.5 meters per second.................
