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2 years ago

How can you write repeating decimals as fractions

Mathematics

2 answers:

Ghella [55]2 years ago

6 0

By using 9 in the equation

Oduvanchick [21]2 years ago

5 0

Answer:

write the repeating number with 9 in the denominator

Step-by-step explanation:

Just write the repeating number over 9

i.e.

0.11111111... = 1/9
7.22222222... = 7 2/9 or 65/9
1234.555555... = 1234 5/9 or 11111/9
etc.

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4(5+ab) where a=-3.5 and b-0.8

lozanna [386]

Answer:

31.2

Step-by-step explanation:

4(5 + (- 3.5 × - 0.8)

4(5 + 2.8)

4(7.8)

31.2

6 0

2 years ago

if you deposit $8000 into an account paying 9% annual interest compunded semi anually how long will it take for your money to do

Anna007 [38]

Answer:

7.87 years

Step-by-step explanation:

#First we determine the effective annual rate based on the 9% compounded semi annual;

$i_m=(1+i/m)^m-1\\\\=(1+0.09/2)^2-1\\\\=0.09203$

#We then use this effective rate in the compound interest formula to solve for n. Given that the principal doubles after 2 yrs:

$A=P(1+i)^n\\\\A=2P, i=i_m\\\\16000=8000(1.09203)^n\\\\2=1.09203^n\\\\n=\frac{log \ 2}{log \ 1.09203}\\\\=7.87324\approx7.87 \ yrs$

Hence, it takes 7.87 years for the principal amount to double.

4 0

2 years ago

One mile is approximately<br> kilometres

allsm [11]

Answer:

1 mile ~ 1.60934 kilometers

Step-by-step explanation:

Hope this helps

Have a great day!

5 0

2 years ago

Read 2 more answers

Rubin has 6 rolls of pennies containing 50 coins each, 5 rolls of nickels

MArishka [77]

Answer:

C. $63.00

Step-by-step explanation:

$(6*50*0.01)+(5*40*0.05)+(4*50*0.10)+(3*40*0.25)=\\(300*0.01)+(200*0.05)+(200*0.10)+(120*0.25)=\\3+10+20+30=\\13+20+30=\\33+30=\\63$

He has C. $63.00.

7 0

2 years ago

Read 2 more answers

Note: picture not drawn to scale

Fantom [35]

Answer: C. 314 cm2

Step-by-step explanation:

The equation for the area of a circle is: pi * radius squared. First, 10 squared is 100. 100 times 3.14 is 314.

6 0

2 years ago