Combine terms: 12a + 26b -4b – 16a

Mathematics

2 answers:

liq [111]3 years ago

7 0

Answer:

Step-by-step explanation:

combine terms: 12a + 26b -4b – 16a

12a - 16a + 26b - 4b
-4a + 22b

Sergeu [11.5K]3 years ago

4 0

Answer:

-4a+22b

Step-by-step explanation:

If you add the terms with "a" (12a and -16a) you get -4a.

If you add the terms with "b" (26b and -4b) you get a positive 22b.

You can write the answer as -4a+22b or 22b-4a.

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The copper content of 18-carat gold was measured by two methods for six different samples collected from a jewelry production pl

Schach [20]

Full question attached

Answer:

Paired t test

Explanation:

The paired sample t test is used to measure or compare the mean of two observations or samples by measuring each subject two times as is seen above with the gold measurement which would result in two sets or pair of samples in a statistical procedure. We observe from the question that we measure each gold with two methods and then compare result of the two methods in terms of their mean error using the paired t test.