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S_A_V [24]
3 years ago
11

-81, 108, -144, 192, ...

Mathematics
1 answer:
noname [10]3 years ago
8 0

Answer:

C

Step-by-step explanation:

The terms form a geometric sequence with common ratio r

r = \frac{a_{2} }{a_{1} } = \frac{a_{3} }{a_{2} } = ......

r = \frac{108}{-81} = \frac{-144}{108} = - \frac{4}{3}

The n th term formula of a geometric sequence is

a_{n} = a (r)^{n-1} ← a is the first term

here a = - 81, hence

f(x) = - 81(-\frac{4}{3}) ^{x-1} → C

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Estimate the sum 8/10 + 1/9
RideAnS [48]

Answer:

41/45

Step by Step Explanation:

Add: 8/

10

+ 1/

9

= 8 · 9/

10 · 9

+ 1 · 10/

9 · 10

= 72/

90

+ 10/

90

= 72 + 10/

90

= 82/

90

= 2 · 41/

2 · 45

= 41/

45

For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(10, 9) = 90. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 10 × 9 = 90. In the following intermediate step, cancel by a common factor of 2 gives 41/

45

.

In other words - eight tenths plus one ninth = forty-one forty-fifths.

8 0
2 years ago
Ms. Chu needs to buy hot dogs and buns for the school picnic. She needs at least one hot dog and bun for each of the 40 students
PtichkaEL [24]
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6 0
2 years ago
What is the solution for the following system of equations? x +2y= 6
salantis [7]

Answer: The answer to your question is infinitely many solutions

Step-by-step explanation: There is two solutions to the system of equations, which means there is complex solutions, or in other words many solutions. And when you have more than one solution, you have infinitely many solutions. Hope this helps:)

And please mark my answer the brainliest

7 0
3 years ago
What is (-4,-2) reflection on a coordinate plane across the y-axis?
liq [111]
(4,-2) because you would transfer the point the same distance away from the y axis just on the other side of it
8 0
2 years ago
Evaluate 9^-45 divided by 5+8=
gladu [14]

well this is a mind game all you had to do was add 5+8 together

in reality the question is simple its

9^-45 divided by 13

because 5+8=13

your answer is 8 in decimal form

the fraction form is

1/5*9^45+8

7 0
2 years ago
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