The cost of the printer is $309 and cost of the computer is $618.
Step-by-step explanation:
Let x denote the cost of computer
Let y denote the cost of printer
Total cost of printer and computer OR
x + y = $927
<u>To find the cost of x and y,</u>
Cost of computer = 2 x cost of the planet
x = 2y
x+y = 927
2y+y = 927
3y = 927
y = 309
x = 2y
x = 2(309)
x = 618
Therefore, the cost of the printer is $309 and cost of the computer is $618.
Keyword: Cost, Algebra
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<u>ANSWER: </u>
A scooter travels 18 miles in the same time a bike covers 8 miles.The rates of both scooter and bike are 8 miles per hour and 18 miles per hour
<u>SOLUTION:
</u>
Given, a scooter travels 18 miles in the same time a bike covers 8 miles.
The rate of the scooter is two miles per hour than twice the rate of the bike
We need to find both rates of scooter and bike.
Let the speed of scooter be x and speed of bike be y.
And, time taken to travel be t.
Then,
for scooter:


--- (1)
For bike:


--- (2)
Now, equate both (1) and (2)

On cross-multiplication we get
18y = 8x
4x – 9y = 0 ---- (3)
We also know that, rate of the scooter is two miles per hour than twice the rate of the bike.
x = 2 + 2y ---- (4)
Now substitute (4) in (3)
4(2 + 2y) – 9y = 0
8 + 8y – 9y = 0
9y – 8y = 8
y = 8.
Again substitute y value in (4)
x = 2 + 2(8) = 2 + 16
x = 18.
Hence, the rates of both scooter and bike are 8 and 18 miles per hour
If the equation is
, this is a unsolvable equation.
Answer:
The volume of the sphere with radius 8 cm is 2143.573 centimeters³
Step-by-step explanation:
Given as :
The radius of the sphere = r = 8 cm
Let The volume of sphere = v cm³
<u>Now, According to question</u>
Volume of sphere =
× π × radius³
where r is radius of sphere
π = 3.14
Or, v =
× 3.14 × r³
Or, v =
× 3.14 × 8³
Or, v =
× 1607.68
Or, v = 
∴ v = 2143.573 cm³
So, The volume of the sphere = v = 2143.573 cm³
Hence, The volume of the sphere with radius 8 cm is 2143.573 centimeters³ Answer
Answer: True
The ratio is equivalent to
1 kg = 1000 g