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Ostrovityanka [42]
3 years ago
7

Pauline withdrew $7.50 from her savings account every day for 3 days. Which expression is the best choice to help her determine

the total amount of money she withdrew? A.(7.50)(−3) = −22.50; she withdrew $22.50 B.(−7.50)(3) = −22.50; she withdrew $22.50 C.(−7.50)(−3) = 22.50; she withdrew $22.50 D.(7.50)(3) = 22.50; she withdrew $22.50
Mathematics
2 answers:
pishuonlain [190]3 years ago
6 0

Answer:

b

Step-by-step explanation:

i took the test trust

blsea [12.9K]3 years ago
3 0
B; (-7.50)(3) = -22.50
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Vedmedyk [2.9K]

Answer:

The length of the rectangle (l) = 10 cm

The width of the rectangle (w) = 7 cm

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Let 'x' be the length of the rectangle

Given that the width is 3 feet shorter than the length

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Area of the rectangle = length × width

<u><em>Step(ii):-</em></u>

Area of the rectangle = length × width

                                  = x ( x-3)

Given that the area of the rectangle = 70 square feet

                       x ( x-3) = 70

              ⇒   x² - 3x - 70 =0

              ⇒  x² - 10 x + 7 x - 70 =0

             ⇒  x (x -10) +7( x-10) =0

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<u><em>Final answer:</em></u>-

we choose x=10

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