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3 years ago

Ashley took $20 out of her savings account each week on Friday how many weeks ago did she have at least $250 in her account

Mathematics

2 answers:

Aloiza [94]3 years ago

7 0

She had 250 in about 13 weeks

Vilka [71]3 years ago

6 0

13 weeks ago she would of had $250

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Please answer with steps shown. Thanks!

maks197457 [2]

Answer: q = 40

Step-by-step explanation:

Given the quadratic formula as

x = [-b +/-√(b^2 -4ac)]/2a

b = -14

a = 1

c = q

Difference d between the two roots.

d = [-b + √(b^2 -4ac)]/2a - [-b -√(b^2 -4ac)]/2a

d = 2√(b^2 -4ac)/2a

d = √(b^2 -4ac)/a

And d = 6

Substituting the values of a,b and c. We have;

6 = √[(-14^2) - (4×1×q)]

Square both sides

6^2 = 196 - 4q

4q = 196 - 36

q = 160/4

q = 40

The equation becomes

x^2 - 14x + 40 = 0

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3 years ago

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viva [34]

Answer:

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Step-by-step explanation:

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3 years ago

AB has endpoints at A(2,6) and B(6,8). What are the coordinates of the midpoint

Trava [24]

The answer is (4,7)

look at the attached picture

Hope it helps..

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6 0

3 years ago

2. In what ratio does the point (5, 4) divide the given line joining the points (2,1) and (7,6)

Darya [45]

Answer:

3/2

Step-by-step explanation:

Let it be

C (5;4) , A (2;1) ; B(7;6)

Suppose that C divide the line AB in ratio m/n from point A (AC is m, CB is n)

Use the formula xc=(m*xb+n*xa)/ (m+n)

5=(m*7+2n)/(m+n)

5m+5n= 7m+2n

2m=3n

m/n=3/2

5 0

2 years ago