Answer:
A. −2(x − 7)2 + 118; x = $7
Step-by-step explanation:
The expression −2x² + 28x + 20 represent the store weekly profit in dollars, where x represents the price of a new video game.
let f(x) = −2x² + 28x + 20
We need to rewrite this quadratic function in the vertex form.
f(x) = −2(x² - 14x) + 20
f(x) = −2(x² - 14x +49) - {-2(49) + 20}
f(x) = −2(x² - 14x +49) + 98 + 20
f(x) = −2(x² - 7)² + 118
The equivalent expression that reveals the video game price that produces the highest weekly profit is -2(x-7)^2+118 and the price is $7
4,6 is what I think, see if you have a plain that has a90 deg around c.
Answer:
The final balance is $113,645.52.
The total compound interest is $104,195.52.
Step-by-step explanation:
Answer:
809.4cm²
Step-by-step explanation:
Given the following :
Systematic error = 3.8cm (The measured length is always more than the actual length.)
Most probable dimension :
Width = 85.7 cm
Length = 123.5 cm
Hence most probable area of Rectangle :
Area = Length × Width
Area = 85.7cm × 123.5cm = 10583.95 cm²
Dimension due to Systematic error :
Length = (85.7cm + 3.8cm) = 89.5cm
Width = (123.5cm + 3.8cm) = 127.3cm
Area = Length × width
Area = ( 89.5cm × 127.3) = 11393.35cm²
Systematic error of the area :
value of area with Systematic error - Probable value of area :
11393.35cm² - 10583.95 cm² = 809.4cm²