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Scrat [10]
3 years ago
15

It takes a boat going upstream 3 hours to cover the same distance, as it would cover in 2 hours going downstream. What is the sp

eed of the boat if the speed of the current is 3 kilometers per hour?
Mathematics
1 answer:
enot [183]3 years ago
3 0

Answer:

15 km

Step-by-step explanation:

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There are two less nickels than dimes, and as many quarters, as nickels and dimes together. The total amount of money is $5.25.
katen-ka-za [31]
N=d-2
q=n+d =>q=(d-2)=q=2d-2
25q+5n+10d=525
replace q and n with d
25(2d-2) +5(d-2)+10d=525
50d-50+5d-10+10d=525
65d=585
d=9
n=7
q=16

3 0
2 years ago
A 5-pound bag at Bargain Mart costs $6.45. A 2-pound bag at Food Saver costs $2.50. A 7-pound bag at Grocery Surplus costs $9.45
levacccp [35]

Answer: Food Saver

Step-by-step explanation:

A 5-pound bag at Bargain Mart costs $6.45. The coat per pound will be:

= $6.45 / 5

= $1.29

A 2-pound bag at Food Saver costs $2.50. The cost per pound will be:

= $2.50 / 2

= $1.25

A 7-pound bag at Grocery Surplus costs $9.45. The cost per pound will be:

= $9.45 / 7

= $1.35

A 10-pound bag at Economart costs $12.89. ​The cost ​per pound will be:

= $12.89 / 10

= $1.289

Therefore, the shop which sells flour for the lowest unit price is Food Saver.

5 0
2 years ago
A contestant on a game show wins $100 for answering a question correctly in Round 1. In each subsequent round, the contestant’s
NeTakaya
The correct answer would have
3 0
3 years ago
The radius of a cylindrical water tank is 4.5ft, and its height is 11ft. What is the volume of the tank?
Yanka [14]

Answer:

494.8

Step-by-step explanation:

Volume of cylinder = 2pierh + 2pier^2

= 2*3.14*4.5*13 + 2*3.24*4.5^2

= 494.8

7 0
2 years ago
The perimeter of a right angled triangle, with hypotenuse c=101cm and one side b=20cm, is:​
crimeas [40]

Answer:

220

Step-by-step explanation:

We need to find the 3rd side length

We already know the hypotenuse and one side, so we can use the Pythagorean formula.

101^2 = a^2 + 20^2. A is the third side, and solving for it, we find that it equals 99.

Side 1 = 101

Side 2 = 99

Side 3 = 20

101 + 99 + 20 = 220

3 0
2 years ago
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