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3 years ago

Find the first, fourth, and eighth terms of the sequence. A(n) = -2.54-1

Mathematics

1 answer:

vazorg [7]3 years ago

4 0

Answer:

the second option is correct

Step-by-step explanation:

A(n)=-2.5ⁿ-¹

for first term

let n=1

A(1)=-2.5¹-¹

=-2.5^(0)

=-2(1)=-2

for fourth term

let n=4

A(4)=-2.5⁴-¹

=-2.5³

=-2.125

=-250

for eighth term

let n=8

A(8)=-2.5^(8-1)

=-2.5^7

=-2.78125

=-156,250

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Use the translation (x, y)→(x−4, y+2) to find the preimage of (7, 2)

Bess [88]

Answer:

(11 , 0)

Step-by-step explanation:

x - 4 = 7

x = 7 +4

x = 11

y + 2 = 2

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2 years ago

A town park has two biking trails. Marsh Trail is 5 3/10 miles long. Woodland trail is 2 4/5 Miles long. How much longer is Mari

torisob [31]

Answer:

21/2

Step-by-step explanation:

The answer can be determined by substracting the lengrh of the woodland trail from the Marsh trail

$5\frac{3}{10}$ - $2\frac{4}{5}$

$3\frac{3 - 8}{10}$

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3 years ago

Find the length of x. help please !

andreyandreev [35.5K]

Answer:

x = 10

Step-by-step explanation:

Use CPCTC (Corresponding parts of congruent triangles are congruent).

Set the ratios:

$\frac{6.5}{5} = \frac{6.5 + 6.5}{x}$

First, simplify. Combine like terms:

$\frac{6.5}{5} = \frac{13}{x}$

Next, cross multiply.

$5 * x * \frac{6.5}{5} = \frac{13}{x} * x * 5\\x * 6.5 = 13 * 5\\6.5x = 65\\$

Isolate the variable, x. Divide 6.5 from both sides of the equation:

$\frac{(6.5x)}{6.5} = \frac{(65)}{6.5} \\\\x = \frac{65}{6.5}\\x = 10$

Check:

$\frac{5}{6.5} = \frac{x}{13}$

Plug in 10 for x (Your answer). Cross multiply, then simplify:

$\frac{5}{6.5} = \frac{10}{13}$

$13 * 6.5 * \frac{5}{6.5} = \frac{10}{13} * 13 * 6.5$

$13 * 5 = 10 * 6.5$

$65 = 65$ (True).

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3 years ago

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DanielleElmas [232]

A hotel offers discount rates in the off season so the answer is C.

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3 years ago

An uncooked gingerbread cookie is y centimeters long. After it is baked, the length of the

marusya05 [52]

Answer:

I think the answer is C

Step-by-step explanation:

If you have a normal ginger bread cookie, its full size would be 100%. So, if you add the first 25%, 1.25%

3 0

3 years ago

Read 2 more answers