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yuradex [85]
3 years ago
12

The length of rectangle PQRS is expressed as 2x+7. The width of rectangle PQRS is expressed as 3x−4. Which expression describes

the area of rectangle PQRS?
A.6x^2
B.6x^2-29x-28
C.6x^2-15
D.6x^2+13x-28
Mathematics
1 answer:
dalvyx [7]3 years ago
3 0

Answer:

area = length \times width \\  = (2x + 7)(3x - 4) \\  = (6 {x}^{2}  - 8x + 21x - 28) \\  = (6 {x}^{2}  + 13x - 28) \: sq \: units

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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A savings account is started with an initial deposit of $700. The account earns 1.5% interest compounded
marusya05 [52]

Answer:

  (a)  A = 700×1.015^t

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Step-by-step explanation:

(a) Each year, the account value is multiplied by (1 + 1.5%) = 1.015. Repeated multiplication is signified using an exponent. In t years, when the account has been multiplied by 1.015 t times, the account value will be ...

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(b) You want to find t when A=$1200. Logarithms are involved.

  1200 = 700×1.015^t . . . . use 1200 for A

  1200/700 = 1.015^t . . . . . divide by 700

  log(12/7) = t×log(1.015) . . . . . take logarithms

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It will take about 36.2 years for the account balance to reach $1200.

4 0
3 years ago
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shusha [124]

Answer:

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Step-by-step explanation:

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