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navik [9.2K]
3 years ago
7

Help me please i need your help

Mathematics
1 answer:
neonofarm [45]3 years ago
6 0
I think the correct answer is A.or if not isD.
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In parallelogram ABCD, the measure of angle ABC is 130, find the measure, in degrees of angle DAB
77julia77 [94]
Angle ABC = 130
Angle ABC = Angle ADC = 130 (Opposite angles are equal)
Angle DAB = 180 - 130 = 50 (consecutive interior angles)

I HOPE IT IS HELPFUL:D
6 0
3 years ago
Read 2 more answers
The sum of the first n terms of an arithmetic sequence is n/2(4n + 20).
lesantik [10]

Answer:

(a).

S_{n} =  \frac{n}{2} (4n + 20) \\  \\S _{n - 1} =  \frac{(n - 1)}{2} (4n - 4 + 20) \\  \\ S _{n - 1} =  \frac{(n - 1)}{2} (4n + 16) \\  \\S _{n - 1} = \frac{(n - 1)(4n + 16)}{2}  \\   \\  { \boxed{S _{n - 1} =  {2 {n}^{2} + 6n - 8}}} \\

(b).

from general equation:

S _{n - 1} =  \frac{(n - 1)}{2} (4n + 16)

first term is 4n

common difference:

16 =  \{(n - 1) - 1 \}d \\ 16 = (n - 2)d \\ d =  \frac{16}{n - 2}

8 0
3 years ago
Please help if you are good at math :( thank you
ValentinkaMS [17]

Answer:

your answer will be

A)(6,10)

B)(2,12)

C)(4,4)

Step-by-step explanation:

hope this helps

have a nice day/night ^_^

7 0
3 years ago
Helppppppppppppppppppp
Ymorist [56]
#9: 1 and 1 seventh

#10:   1.23

#11:   0.35
6 0
4 years ago
Help and show work that will make my day ❤️
kolezko [41]
H equals 30 because 3 times 6 is 18 so 5 times 6 is 30
7 0
4 years ago
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