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astraxan [27]
3 years ago
12

How do I find the sum of this series?Question D

Mathematics
1 answer:
raketka [301]3 years ago
8 0
Sum of an infinite geometric sequence with the common ratio r, and the first term a1 is \frac{a_1}{1-r}

we notice
-2 times -1/4=1/2,
1/2 times -1/4=-1/8
so a1=-2
r=-1/4 or -0.25

so the sum is
\frac{-2}{1-(-0.25)}=
\frac{-2}{1+0.25}=
\frac{-2}{1.25}=
\frac{-8}{5}=
the sum is -8/5 or -1.6
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An abscissa point equal to the opposite of three quarters and ordinate equal to two
klemol [59]

Answer:

P(- 3/4, 2)

Step-by-step explanation:

Translating statement

3/4 ... opposite = - 3/4

ordered 2

P(- 3/4, 2)

8 0
3 years ago
A four-pack of 4242-ounce ink cartridges sells for $85.99$85.99. The expression 42c42c represents the amount of ink in a number
masya89 [10]
The variable cc refers to how much ink is in a certain number of cartridges. If the box says 42cc, that means the amount of ink in those particular cartridges is 42. If a box said 12cc, the amount would be 12. The variable cc just states the amount of ink you can expect from a particular amount of cartridges.
8 0
3 years ago
EOC Review
lana [24]

Answer:

0ft and 60ft

Step-by-step explanation:

Given

The attached function

Required

Determine the valid values of the domain of the function

To do this, we simply consider the starting point and the end point of the trajectory on the x-axis (i.e. the horizontal distance).

From the attached graph, the horizontal distance starts from 0 and ends at 180.

This implies that the domain is: 0 \le x \le 180

From the options, the values that fall in this bracket are 0ft and 60ft

3 0
2 years ago
Can I get help on this problem showing my work?
Evgen [1.6K]
cost \: of \: 1 \:bracelet \\(no\:shipping): \\72 \: dollars - 9 \: dollars \: shipping = \\ 63 \: \div 9 \: = cost \: of \: 1 \: bracelet \: \\ = 7 \: dollars
\\cost \: of \: shipping: \\ 9 \: dollars \: \div 9 \: bracelets \: = \\ 1 \: dollar\: per\:bracelet \\ \\ formula \: for \: cost \: overall: \\ 7y \: + y

y = quantity, for example:

I want to buy 1 bracelet =
1×7 = 7 + 1 = 8$ per bracelet
6 0
3 years ago
Read 2 more answers
Plsssss help ASAP ;-;
lorasvet [3.4K]

Answer:

3x+2

Step-by-step explanation:

6x^{2} - 11x - 10 = (2x - 5)(3x+2)

So, \frac{6x^{2} - 11x - 10}{2x-5} = \frac{(2x-5)(3x+2)}{2x-5}

= 3x + 2

Hope this helps :)

5 0
3 years ago
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