Market researchers were interested in the relationship between the price of bobbleheads and the demand of bobbleheads. Information was collected from a survey and was used to obtain the regression equation ý = -0.277X +
50.455, where x represents the price of a bobblehead (measured in dollars) and ŷ is the predicted demand of
bobbleheads in units). Which statement best describes the meaning of the slope of the regression line?
* For each increase in demand by 1 unit, the predicted price decreases by $0.227.
For each increase in demand by 1 unit, the predicted price decreases by $50.455.
For each increase in price by $1, the predicted demand decreases by 0.227 units.
For each increase in price by $1, the predicted demand decreases by 50.455 units.

30 people weigh 160 pounds or more

explanation:

remove parenthesis:

=

apply rule

=

multiply fractions:

=

=

divide:

=

mordancy.

fabric (square meters)                   cloaks

7                                                           21

4/3                                                         4

step-by-step explanation:

we are told that harry needs 2 square meters of fabric for every 6 wizard cloaks he makes.

1. first of all we will find how many cloaks can be made from 1 square meter of fabric by dividing 6 by 2.

we can see that 3 cloaks can be made from 1 square meter of fabric. now we will multiply 3 by 7 to find number of cloaks made from 7 square meters of fabric.

therefore, harry will make 21 cloaks from 7 square meters of fabric.

2. let us find how many square meters of fabric will be needed to make 4 cloaks.

first of all we will find fabric needed for 1 cloak by dividing 2 by 6.

we can see that fabric needed for 1 cloak is   square meter. now we will multiply   by 4 to find fabric needed for 4 cloaks.

answer: 1.06 km per sec

step-by-step explanation:

39.6 m=63.72 km

60 min in an hour so 63.72/60=1.06