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deff fn [24]
3 years ago
14

PLEASE ANSWERRRRRRRRRR

Mathematics
2 answers:
Alecsey [184]3 years ago
7 0

Answer:

True

Step-by-step explanation:

Semenov [28]3 years ago
6 0

Answer: True

Step-by-step explanation:

In electromagnetic waves, the more the work, the greater the energy expended.

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Which word sentence represents the equation?
sashaice [31]
I think the answer is )Fifteen less than 2 times some number is 9

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6 0
3 years ago
Read 2 more answers
Please help explanation if possible
hram777 [196]

Answer:

y = 1/7x + 0

Step-by-step explanation:

3x + 21y = 21

21y = -3x + 21

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3 0
3 years ago
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
Mallorie has $5 in her wallet.if this is 10% of her monthly allowance what is her monthly allowance
marta [7]
5=.1*x
divide both side by .1
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4 0
3 years ago
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Emma earns $12 an hour babysitting. She wants to save at least $180. Write and solve and inequality to find the minimum number o
zaharov [31]

Answer:

15 hours

Step-by-step explanation:

180 ÷ 12 = 15

^-^

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6 0
3 years ago
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