Answer:
−2x^2 − 9x + 3
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Answer:
x - = answer: x = +
x - = - answerx = - +
x + = - answer x = -
+x = answer x =
x - = - answer x = - +
the only equation is x + = -
Step-by-step explanation:
2×length + 2×width = 45
length = 4×width
now, we are using the second equation (a variable identity) in the first equation
2×4×width + 2×width = 45
8×width + 2×width = 45
10×width = 45
width = 45/10 = 4.5 in
length = 4×width = 4×4.5 = 18 in
the area of the rectangle is
length × width = 18 × 4.5 = 81 in²
Answer:
f(d) = 2900 - 20d
Step-by-step explanation:
We start with 2,900 and each week 20 is deducted from the account.
f(d) = 2900 - 20d
