Answer:
area of the circle = 3.14 square units
Step-by-step explanation:
Circumference of the circle formula is 
where r is the radius of the circle
given circumference = 6.28
= 6.28
Value of pi is 3.14
2*3.14 * r= 6.28
6.28 r = 6.28
divide by 6.28 on both sides
r = 1
radius = 1
Area of the circle = 
= 3.14 *1*1 = 3.14
X - the mass of the first alloy (15%)
y - the mass of the second alloy (75%)
x kg of the first alloy contains 15%x=0.15x=(15/100)x=(3/20)x kg of copper
y kg of the second alloy contains 75%y=0.75y=(75/100)y=(3/4)y kg of copper
90 kg of a 51% copper alloy contains 51%*90=0.51*90=45.9 kg of copper
The metal worker should combine 36 kg of the 15% copper alloy and 54 kg of the 75% copper alloy to create 90 kilograms of a 51% copper alloy.
Hello!
5 = 5/1 as a fraction
2/5 × 5/1 = 2
ANSWER:
The product of 2/5 and 5 is greater than 2/5, and less than 5.
Another way you could find out if it's greater or less is by converting the fraction to a decimal and then multiplying it.
You must divide the numerator by the denominator to convert a fraction to a decimal.
2 ÷ 5 = 0.4
0.4 × 5 = 2
Machine K y= 26x
y = 26 (11)
y = 286 candies in 11 minutes from Machine K
Machine J
90 / 3 = 30 candies a minute * 11 minutes = 330 candies
330 - 286 = 44
Machine J can pack 44 more candies than Machine K in 11 minutes.
