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3 years ago

Is the sequence Arithmetic or Geometric? -2, 4.-8, 16, ...

Mathematics

1 answer:

Sonbull [250]3 years ago

6 0

Answer:

This is an geometric sequence because the common ratio is -2.

Step-by-step explanation:

-2*-2=4

4*-2=-8

-8*-2=16

So, as we are seeing that the common ratio is -2, so this is an geometric sequence.

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Keiko bought 13 pounds of sugar for $6. How many dollars did she pay per pound of sugar?

stich3 [128]

Step-by-step explanation:

13 pounds of sugar for $6.

for a single pound of sugar we need to divide everything by 13 to keep the same ratio (relationship).

1 pound cost then 6/13 = 0.461538462... ≈ $0.46

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2 years ago

Which of the following can be added without altering any of the fractions?

S_A_V [24]

Answer:

Step-by-step explanation:

$\frac{3x}{x-1}$ + $\frac{8}{x-1}$

These fractions have a common denominator and so do not require to be altered.

The numerators can be added to simplify, that is

= $\frac{3x+8}{x-1}$

The remaining fractions have different denominators and would require to be altered before they could be added.

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2 years ago

Evaluate the expression for v = 8

Iteru [2.4K]

V = 8, because it can’t be simplified any further.

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3 years ago

Write an inequality for each description.

tia_tia [17]

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Let the number be x, so equation becomes : $30-4x>-10$

2: Given equation is $27-2b\leq-6$ this states that the result of 27-2b is less than equal to opposite of six.

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3 years ago