Tina is saving to buy a notebook computer. She has two options. The first option is to put $400 away initially and save $20 ever
2 answers:
Answer:
The first option is to put $400 away initially and save $20 every month. Let she saves for x months. Equation becomes;
The second option is to put $100 away initially and save $40 every month. Let she saves for x months. Equation becomes;
Equating both as equal we will get the number of months.
=>
=>
x = 15
Hence, it will take 15 months to save the same amount.
And amount saved will be =
= $700
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Answer:
Step-by-step explanation:
An apothem is a perpendicular drawn from the centre of the triangle to one of its sides.
The three apothems OD, OE, and OF divide ∆ABC into six smaller congruent triangles.
1. Area of ∆OCD
CotOCD = OD/OC
cot30 = CD/6
√3 = CD/6
CD = 6√3
A= ½bh
A = ½ × 6√3 × 6 = 18√3 in²
2. Area of ∆ABC
A = 6 × area of ∆OCD = 6 × 18√3 = 108√3 in²