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4 years ago

Reduce to simplest form

Mathematics

2 answers:

Sophie [7]4 years ago

6 0

Answer:

4/15

Step-by-step explanation:

When subtracting a negative, the negatives cancel and make a positive.

-1/3 - (-3/5)

-1/3 + 3/5

Now, you have to make the fractions have common denominators. Do this by multiplying the bottom number to get the least common multiple. Multiply the numerator by the same number you multiplied the denominator.

(-1/3)(5/5) + (3/5)(3/3)

-5/15 + 9/15

4/15

The simplest form is 4/15.

lisov135 [29]4 years ago

3 0

Answer: 4/15

Step-by-step explanation:

-1/3 - -3/5

Two negative signs become positive so it's

-1/3+3/5

Taking the LCM as 15,

-1/3= -5/15

3/5= 9/15

-5/15 + 9/15

= (-5+9)/15

= (9-5)/15 ( just changing the order without changing the sign)

= 4/15

This is the simplest form

(If you need it in decimal form is 0.26666... or 0.267)

Hope it helps

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erastovalidia [21]

Answer:

I am pretty sure it is D.

Step-by-step explanation:

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3 years ago

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Vinil7 [7]

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3 years ago

Kristen invests $ 5745 in a bank. The bank 6.5% interest compounded monthly. How long must she leave the money in the bank for i

podryga [215]

Answer:

1. 10.7 years

2. 17.0 years

3. 2nd option

Step-by-step explanation:

Use formula for compounded interest

$A=P\cdot \left(1+\dfrac{r}{n}\right)^{nt},$

where

A is final value, P is initial value, r is interest rate (as decimal), n is number of periods and t is number of years.

In your case,

1. P=$5745, A=2P=$11490, n=12 (compounded monthly), r=0.065 (6.5%) and t is unknown. Then

$11490=5745\cdot \left(1+\dfrac{0.065}{12}\right)^{12t},\\ \\2=(1.0054)^{12t},\\ \\12t=\log_{1.0054}2,\\ \\t=\dfrac{1}{12}\log_ {1.0054}2\approx 10.7\ years.$