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Elanso [62]
3 years ago
10

PLZ SOMEONE HELP ME ON THIS

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
7 0
It just might be the first one,
I may be wrong let me know
Hope it helps
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2. The sum of two times a<br> number squared and four
MaRussiya [10]

Answer:

2·x²+4

Step-by-step explanation:

The sum is an answer to an addition problem and 2 times a number means to multiply by 2.  That number is squared so you it's to the second power.

5 0
3 years ago
Read 2 more answers
To compare the production techniques used by foreign and local firms in Brazil, a random sample of 80 foreign firms and a random
alina1380 [7]

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>

6 0
2 years ago
The length of a side of a square is represented by 2x. The area of the square is
Pavlova-9 [17]
The length of a side is 18.
Here is my work attached:
5 0
2 years ago
Solve similar triangles can someone please answer
Vilka [71]

Answer:

Step-by-step explanation:

\frac{XY}{PQ}=\frac{YZ}{QR}\\\\\frac{19.5}{6.5}=\frac{10.5}{k}\\\\

Cross multiply,

19.5*k = 10.5 * 6.5

k =\frac{10.5*6.5}{19.5}\\\\k=3.5

8 0
2 years ago
One subtacted from the product of 4 and a number is 11​
Sonja [21]

I HOPE IT WILL HELP YOU.

Thank you.

^ - ^

7 0
2 years ago
Read 2 more answers
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