393 dollups
no
21×2=42
42×4=168
168+225=393
there ya go dude
Answer:
The answer to your question is Tree's height = 26.8 ft
Step-by-step explanation:
Data
Person Tree
height = 6 ft height = x
shadow = 8.5 ft shadow = 38 ft
Process
1.- Use the Thales' theorem to solve this problem
Person's height/ Person's shadow = Tree´s height / Tree's shadow
Solve for Tree's height
Tree's height = Person's height x Tree's shadow / Person's shadow
Substitution
Tree's height = 6 x 38 / 8.5
Simplification
Tree's height = 228 / 8.5
Result
Tree's height = 26.8 ft
Answer:
-12x = 60
Step-by-step explanation:
This is the type of problem that you just have to do a bunch of times until you get it right -- I don't think there's anything I can tell you that'll help you immediately. Ask for your teacher for more exercises of this sort or look it up online.
Good luck!
The numbers are (-8, 3) or (3, -8).
Step-by-step explanation:
- Step 1: Given the product of the numbers are -24 and their sum are -5. Let the numbers be a and b. Form equations out of these details.
⇒ a + b = -5 ⇒ b = -5 - a
⇒ a × b = -24 -------- (1)
- Step 2: Substitute the value of b in eq(1)
⇒ a × (-5 - a) = - 24
⇒ -5a - a² = -24
⇒ a² + 5a - 24 = 0
- Step 3: Solve the quadratic equation for a.
a = (-5 ± √25 - 4 × 1 × -24)/2
= (-5 ± √121)/2
= - 16/2, 6/2 = -8 or 3
- Step 4: For each value of a, find b.
When a = -8, b = -5 +8 = 3
When a = 3, b = -5 - 3 = -8.
