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3 years ago

Find the 10th term of the geometric sequence

Mathematics

2 answers:

RUDIKE [14]3 years ago

5 0

Answer:

1835008

Step-by-step explanation:

7,28,112,448,1792,7168,28672,114688,458752,1835008

Irina-Kira [14]3 years ago

5 0

Answer:

1835008

Step-by-step explanation:

The n th term of a geometric sequence is

$a_{n}$ = a $(r)^{n-1}$

where a is the first term and r the common ratio

Here a = 7 and r = 28 ÷ 7 = 4, thus

$a_{10}$ = 7 $(4)^{9}$ = 7 × 262144 = 1835008

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Rudiy27

Answer:

Step-by-step explanation:

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3 years ago

3^x-3^(x-2)=A*3^x solve for A

ale4655 [162]

Answer:

$a=\frac{8}{9}$

Step-by-step explanation:

$3^x-3x^{x-2} =a3^x$

Divide both sides by $3^x$ :

$3^{x-x}-3^{x-x-2}=a$

Simplify:

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3 years ago

79% of 67 miles is what?

KIM [24]

To do it without a calculator:

10% of 67 is 6.7
6.7 x 8 is 53.6 (80%)
1% of 67 is .67
53.6 - .67 is 52.93 (79%)

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4 years ago

Read 2 more answers

Please help i don't understand

alexira [117]

Answer:

Step-by-step explanation:

The diagonals of a parallelogram bisect each other. Hence, the two shorter sides created on diagonal RT ("6x-7" and "x+28" ) are equal.

We can set them equal and solve for x:

$6x-7=x+28\\6x-x=28+7\\5x=35\\x=\frac{35}{5}\\x=7$

So the side length of 6x -7 is:

6(7)-7 = 35

and the side length of x + 28 is:

7 + 28 = 35

THus, the diagonal RT = 35 + 35 = 70 units

Answer choice A is right.

3 0

3 years ago

PLEAS HELP ASAP PLEAS 20 points 1 over 3b = 4 over 5. what equals b in this equation?

White raven [17]

Answer:

b = 5/12

Step-by-step explanation:

You have the proportion

1/(3b) = 4/5

Cross multiply to get rid of the fractions...

5 = 12b now solve for b

5/12 = b (divide by 12 on both sides)

8 0

3 years ago