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austinwilliams60
16.03.2022 •
Mathematics
A
A rope is fixed between two trees that are
10 metres apart. When a child hangs on to
the centre of the
rope,
it
sags so that the
centre is 2 metres below the level of the
ends. Find the length of the rope.
Solved
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Ответ:
Coupon 1
Step-by-step explanation:
Purchase list :
1/2 lb cheese
3 lbs sliced ham
2 loaves of bread
4 bags of potato chips
1 container of salsa.
Cost of 1 lb cheese = $1.99
So, cost of 1/2 lb =![1.99 \times \frac{1}{2}](/tpl/images/0435/8231/9e02e.png)
=![0.955](/tpl/images/0435/8231/f216c.png)
Cost of 1 lb sliced Ham = $3.29
So, cost of 3 lb Sliced Ham =![3.29 \times 3](/tpl/images/0435/8231/51beb.png)
=![9.87](/tpl/images/0435/8231/0edf3.png)
Cost of 1 loaf of bread = $ 1.59
So, cost of 2 loaves of bread =![1.59 \times 2](/tpl/images/0435/8231/4398b.png)
=![3.18](/tpl/images/0435/8231/a2a65.png)
Cost of 2 bags of potato chips = $ 3
So, cost of 4 bags = $3+$3 = $6
Cost of 1 container of salsa = $1.39
So, total cost of purchase before sales tax =
= ![21.395](/tpl/images/0435/8231/7bce7.png)
Now The food sales tax is 3%.
So, 3% of total =![3% \times 21.395](/tpl/images/0435/8231/70d50.png)
=![\frac{3}{100} \times 21.395](/tpl/images/0435/8231/e29a5.png)
=![0.64185](/tpl/images/0435/8231/1a500.png)
Thus total cost including sales tax =![21.395+0.64185](/tpl/images/0435/8231/9baf0.png)
= $22.036
Coupon 1: $4.00 off if your purchase totals more than $15.00
Since total cost is more than $15
So, $4 is off on total cost
So, total cost after coupon is applied = $22.036-$4 =$18.036
Coupon 2: 10% off if the total is more than $20.00.
So, 10% of total cost =![10\% \times 22.036](/tpl/images/0435/8231/a8194.png)
=![\frac{10}{100} \times 22.036](/tpl/images/0435/8231/8f6f6.png)
=![2.2036](/tpl/images/0435/8231/adeb0.png)
So, total cost after getting 10 % off =![22.036-2.2036](/tpl/images/0435/8231/1b981.png)
=19.8324
So, total cost after coupon 2 is applied = $19.8324
Hence coupon 1 will save the most money .