First method:
What we can do first is to distribute directly 4.2 to 6 and
0.43, that is:
4.2 (6 + 0.43)
= 4.2 * 6 + 4.2 * 0.43
= 25.2 + 1.806
= 27.006
Second method:
We can add the two numbers 6 and 0.43 then multiply with
4.2, that is:
4.2 (6 + 0.43)
= 4.2 (6.43)
= 27.006
What we see is the Distributive Property of multiplication
which states that multiplying the sum of a number is similar to multiplying
each number and then adding the products.
-5/19 is negative
Which of the results are negative
Remember (-) * (-) = (+)
Solution: B, D, E
The answer to the question
Answer:
7 ft by 17 ft
Step-by-step explanation:
Our goal is to express the actual dimensions of the room in square feet.
The first dimension on the drawing, 4 1/4 in, corresponds to 17 ft of actual length of the room, as seen below:
We write and solve an equation of ratios:
(4 1/4 in) 1/4 in
------------ = ----------- which comes out to (4 1/4 in)(1 ft) = (1/4 in)(x), or
x 1 ft
17 in-ft = x in, or x = 17 ft is the actual room length
and the actual room width is
(3 1/2 in) 1/4 in
-------------- = -------------, which yields room width y = 7 ft
x 1 ft
