Food mix a contains 2% fat, and food mix b contains 7% fat. a 20-kilogram diet mix of foods a and b is formed. if x kilograms of food a are used, write an algebraic expression that represents the total number of kilograms of fat in the final food mix. simplify the expression.

The required expression is y = 1.4 - 0.05x

Step-by-step explanation:

Consider the provided information.

Food mix A contains 2% fat and food mix B contains 7% fat.

Let x kilograms of food A are used, in a 20-kilogram mixture.

Thus, 20 - x kilograms of food B are used, in a 20-kilogram mixture.

Now It is given that A contains 2% fat and food mix B contains 7% fat.

2% and 7% can be written as 0.02 and 0.07 respectively. Let represent the total fat with y.

Thus, the required expression is:

y = 2% (x) + 7% (20 - x)

y = 0.02 (x) + 0.07 (20 - x)

y = 0.02x + 1.4 - 0.07x

y = 1.4 - 0.05x

Hence, the required expression is y = 1.4 - 0.05x

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

13

step-by-step explanation:

divide the cost of the total of sodas you bought by the cost of one soda, for example:

$24.57 divided by $1.89 is 13 which means you bought 13 sodas