3 years ago

0.5 as a repeating decimal to a fraction

Mathematics

1 answer:

nika2105 [10]3 years ago

5 0

Those are just repeating equivalent decimals

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A company makes steel lids that have a diameter of 13 inches what is the area of each lid

harkovskaia [24]

The areas of a. circle is
$\pi r ^{2}$
the diameter is 2 times the radius, therefore
π (13/2)^2=132.665

Answer: about 132.7 in^2

8 0

3 years ago

Find the sum of the series 9+3+1+........+1/27

Elina [12.6K]

Answer:

364/27

Step-by-step explanation:

9, 3, 1, ... is a geometric sequence with common ratio r = 1/3.

The nth term is a1rn-1.

If a1rn-1 = 1/27, then 9(1/3)n-1 = 1/27

32(3-1)n-1 = 3-3

3231-n = 3-3

33-n = 3-3

3-n = -3

n = 6

The sum, Sn, of the first n terms of a geometric sequence is given by Sn = a1(1 - rn) / (1 - r).

So, 9 + 3 + 1 + ... + 1/27 = S6 = 9(1 - (1/3)6) / (1 - 1/3)

= 9(1 - 1/729) / (2/3)

= (27/2)(728/729) = 364/27

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3 years ago

what is the equation of a line in slope-intercept form for a line with slope = 1/4 and y-intercept at (0,-1)

Nadya [2.5K]

Answer:

y = (1/4)x - 1

Step-by-step explanation:

Start with the general slope-intercept form: y = mx + b. Subst. -1 for b and (1/4) for m. Then,

y = (1/4)x - 1

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3 years ago

Francesca obtains a loan of $18.965.00. The loan has a simple interest rate of 3%. How much interest will Francesca owe at the e

marin [14]

Answer:

$568.95

Step-by-step explanation:

Given parameters:

Value of loan = $18965

Interest rate = 3%

Time = 1year

Unknown:

Interest = ?

Solution:

The interest on a particular amount is given as:

I = $\frac{PRT}{100}$

I is the interest

P is the principal

R is the rate

T is the time

I = $\frac{18965 x 3 x 1}{100}$ = $568.95

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3 years ago

Describe the error Sarah made when simplifying the expression shown. -5(x-2)=-5x-10

prisoha [69]

The answer will be 1100283738292

8 0

3 years ago