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andreyandreev [35.5K]
2 years ago
5

The 15th term of an arithmetic series is

Mathematics
1 answer:
RSB [31]2 years ago
7 0

Answer:

-1557

Step-by-step explanation:

a+14d=143

a+12d=183

--------------------

2d= -40

d= -20

a=183+240=423

a(100th)= 423+99*-20=423-1980= -1557

I hope that help =)

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30. 3 x (5 + 6) = 33<br>33. 14 - (8 - 2) - 1 =<br>36. (3 + 2) × (4 + 6) =<br>39. 6 x 4 + 5) =​
Vanyuwa [196]

Answer:

39. 29

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Step-by-step explanation:

39. According to the Order of Operations, in this case, Subtraction & Addition are evaluated after Division & Multiplication:

6 \times 4 + 5 = 24 + 5 = 29

36. Evaluate everything since everything is wrapped in parentheses:

(3 + 2) \times (4 + 6) = 5 \times 10 = 50

33. Evaluate everything inside of parentheses FIRST:

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I am joyous to assist you anytime.

7 0
3 years ago
49.5 is what percent of 33
Svet_ta [14]



  49.5 over 33 and X over 100 cross multiply so multiply 33 by x you get 33x then multiply 100 by 49.5 you get 4,950 then divide 4,950 by whatever is in front of X so 33 4,950 divided by 33 equals 150%
49.5/33   X/100   49.5x100= 4,950    33* x = 33x  4,950/33=150
                               -HOPE THIS HELPED<3



6 0
3 years ago
Consider the two linear expressions. 2+3x+1/2 and 2.5+3x Are the two linear expressions equivalent? HELP!
Marina86 [1]

Answer21

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7 0
3 years ago
Plz help this is due in 1 hour. 56a = 7/4. What is a?
elena-s [515]
To get a you have to have a on its own side
56a=7/4
divide 56 on both sides
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Hope this helped

5 0
3 years ago
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3 years ago
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