All categories

4 years ago

Convert this to a decimal then a percent

Mathematics

1 answer:

Ahat [919]4 years ago

4 0

9/27=33.3% repeating 3 = 0.3 repeating 3

18/27= 66.6 repeating 6 = 0.6 repeating 6

You might be interested in

Evaluate using the finite geometric sum formula

Sever21 [200]

Answer:

$S_9=-18.703$ .

Step-by-step explanation:

The given series is,

$\sum_{i=1}^9(-\frac{1}{2})^{i-1}$

When we substitute $i=1$ , we get the first term, which is $a_1=-28(-\frac{1}{2})^{1-1}$

This implies that,

$a_1=-28(-\frac{1}{2})^{0}$

$a_1=-28(1)=-28$ .

The common ratio is

$r=-\frac{1}{2}$

The finite geometric sum is given by the formula,

$S_n=\frac{a_1(r^n-1)}{r-1} , -1\:$ .

Since there are 9 terms, we find the sum of the first nine terms by putting $n=9$ in to the formula to get,

$S_9=\frac{-28((-\frac{1}{2})^9-1)}{-\frac{1}{2}-1}$ .

$S_9=\frac{-28((-\frac{1}{512})-1)}{-\frac{3}{2}}$ .

$S_9=\frac{-28(-\frac{513}{512})}{-\frac{3}{2}}$ .

$S_9=-28(\frac{171}{256})$ .

$S_9=-\frac{1197}{64}$ .

$S_9=-18.703$ .

The correct answer is B

4 0

3 years ago

Read 2 more answers

WILL GIVE BRAINLY!!!!!!!!<br> Factor completely 2x2 + 2x − 12.

kipiarov [429]

Step-by-step explanation:

All of these terms have a common factor of 2, and when we take that out we get 2(x² + x - 6). To factor the polynomial in the parentheses, we have to find 2 numbers with a product of -6 and a sum of 1, and these are 3 and -2. Therefore, the final answer is 2(x + 3)(x - 2).

Hope this helps!

8 0

4 years ago

What is the relationship between the base angles of an isosceles triangle?

Mashutka [201]

If the 2 base angles are congruent then the two opposite sides are congruent

4 0

3 years ago

Answer ASAP 15 points

malfutka [58]

A or 5/7, they’re both odd numbers so it cannot be simplified any further

8 0

3 years ago

Heelllpppppp plzzzzzzz

galina1969 [7]

Answer:

-2x-6

Step-by-step explanation:

Distribute -2x -2(3) = -2x-6

4 0

3 years ago