A large chocolate bar has been base of the area of 42.30 square feet in the length is 0.4 foot shorter than twice its width. find the length and the width of the bar

4.7 ft= width

9 ft = length

Step-by-step explanation:

Let w = width

2w - .4 = length

A = lw

42.30  = w(2w - .4)

let's remove the decimals by multiplying thru by 10

(2w + 9)(10w - 47) = 0

2w + 9 = 0    or    10w - 47 = 0

2w = -9     or       10w = 47

w = -9/2 = -4.5     or     w = 47/10 = 4.7

Length cannot be negative, so -4.5 must be ignored

Therefore, w = 4.7 ft= width

                2w - .4 = 2(4.7 -.4) = 9.4 - .4 = 9 ft = length

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step-by-step explanation:

hey there!

if she's saving for six months, let's divide the total number we need for the trip by six, dividing it into the amount that needs to be saved for each month.

500 ÷ 6 =

she needs to save at least this amount each month, so we should use this symbol: ≥

let x be the amount she saves each month.

your final answer is x ≥

hope this !