<h2>
Explanation:</h2>
The explicit formula for the general nth term of the arithmetic sequence is given by:
Here we know that:
So, our goal is to find the common difference substituting into the formula:
Finally, we can write the explicit formula as:
<h2>Learn more:</h2>
Geometric series: brainly.com/question/1509142
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The answer is 108 48 divided by 4 is 12 and 9x12 = 108
Answer:
3x+27
Step-by-step explanation:
3(x+4+5)=
3x+12+15=
3x+27
Answer:
Is this in Pearson Easybridge?
Step-by-step explanation:
Answer:
A = 73.33
B = 53.33
C = 53.33
Step-by-step explanation:
Mathematically, adding the 3 angles would equal 180
Thus;
A + B + C = 180 •••••(i)
Since B and C are congruent, that means they are equal ( we are looking at isosceles triangle)
B = C •••••••••(ii)
Lastly;
B = A -20 ••••••••(iii)
Make a substitution in equation 1;
A + A -20 + A -20 = 180
Since B = C ; C also is A-20
3A -40 = 180
3A = 220
A = 220/3 = 73.33
B = C = A -20 = 73.33 -20 = 53.33
