10 is proportional, while 11 is not. The answer for 10 is 1.5.
Answer:
An independent sample.
Step-by-step explanation:
In this scenario, to compare the production techniques used by foreign and local firms in Brazil, a random sample of 80 foreign firms and a random sample of 80 local firms are selected. We can safely conclude that this study uses an independent sample design.
An independent sample design can be defined as a research method that usually involves the use of multiple experimental groups (two or more). The samples or participants are only in one group and as such each group has no relationship with the other. This simply means that, the samples in a particular group is having no relationship with the other samples in another group.
Ultimately this implies, each samples are independent and satisfies only one condition of the independent sample design during the experiment to compare the production technique used by foreign and local firms in Brazil.
<em>Hence, the researcher would use only two variables or conditions: a random sample of 80 foreign firms and a random sample of 80 local firms are selected.</em>
In order to obtain a ratio of boys to girls equal to 3:5, the number of boys has to be written as 3 x and the number of girls as 5 x where x is a common factor to the number of girls and the number of boys. The total number of boys and girls is 600. Hence
<span>3x + 5x = 600 </span>
Solve for x
<span>8x = 600 </span>
<span>x = 75 </span>
Number of boys
<span>3x = 3 × 75 = 225 </span>
Number of girls
<span>5x = 5 × 75 = 375</span>
Answer:
54
Step-by-step explanation:
The square in the middle = 36, as 6x6=36
There are 2 triangles on each side of the center square.
Since the base of the trapezoid is 12, and the base of the square is 6, that leaves 3 for the base of each triangle.
3x6=18x1/2 (As a triangle's area is b (base) x h (height) x (one half) 1/2
18x1/2 is 9.
Each triangle equals 9.
36+9+9=54
The final answer is 54
Answer:
Step-by-step explanation:
he spent 75% of his savings to buy a camera that costs 325....
so 75% of his original savings is 325
let x represent his original savings...." of " means multiply.." is " means equals
75%(x) = 325....turn ur percent into a decimal
0.75x = 325.....divide both sides by 0.75
x = 325 / 0.75
x = 433.33 <=== ur answer
check...
0.75(433.33) = 325
324.99 (rounds to 325) = 325
