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Mila [183]
3 years ago
11

Sum to n terms the series 7 +77 +777​

Mathematics
1 answer:
julia-pushkina [17]3 years ago
4 0

Answer:

Step-by-step explanation:

=7 (1+11+111+1111......n)

=7/9 (9+99+999+9999....n)

=7/9 ((10-1)+(10^2-1)+(10^3-1)+....n)

=7/9 ((10+10^2+10^3...n)-(1+1+1+1.....n))

=7/9 ((10 (10^n-1)/(10-1))-n)

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Which statement best describes why the sale price is a function of the original price?
stich3 [128]

Answer:

  see below

Step-by-step explanation:

A relation is a <em>function</em> when there is exactly one output for each input. That is the case in this table, so the relation between the original price and sale price is a function.

5 0
3 years ago
what is the inverse of the conditional statement? If a polygon the has five angles, then it is a Pentagon
den301095 [7]

Answer:  The inverse f the given statement is

"If a polygon is not a Pentagon, then it does not have five sides".

Step-by-step explanation:  We are given to write the inverse of the following conditional statement:

"If a polygon the has five angles, then it is a Pentagon".

<u>INVERSE of a conditional statement :</u>

If the conditional statement is

"If p, then q",

then its inverse statement is given by

"If not q, then not p".

Therefore, the inverse of the given statement is

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9 0
3 years ago
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Can you plz answer this for me its graded
KengaRu [80]

Answer:

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Step-by-step explanation:

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5 0
2 years ago
There are 100 sheets of paper in the printer, and the number of sheets of paper, p, left after ,t, minutes of printing is given
zalisa [80]
P(t)=number of sheet of paper after t minutes.
p(t) will have to be equal to 0, wnen the printer use  all 100 sheets of paper;
Therefore;
if p(t)=0
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We solve this equation.
-8t+100=0
8t=100
t=100/8
t=12.5

Answer: the printer prints 100 sheets of paper in 12.5 minutes.
7 0
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hury!!!! Which system is equivalent to StartLayout Enlarged left-brace 1st row y = negative 2 x squared 2nd row y = x minus 2 En
jeka57 [31]

Answer:

3rd Option

Step-by-step explanation:

Which equation is the inverse of y = 7x2 – 10?

y = StartFraction plus-or-minus StartRoot x + 10 EndRoot Over 7 EndFraction

y = plus-or-minus StartRoot StartFraction x + 10 Over 7 EndFraction EndRoot

x = plus-or-minus StartRoot StartFraction x Over 7 EndFraction + 10 EndRoot

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8 0
3 years ago
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