Dawn, the teller, counted

Mathematics

1 answer:

noname [10]3 years ago

5 0

Answer:

$6,619.46

Step-by-step explanation:

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Simplify negative 3 over 2 / 9 over 6

Temka [501]

$\mathrm{Simplify} -\frac{3}2\div\frac{9}6.$

Dividing by a fraction is the same as multiplying by its reciprocal. (flipped version)

$-\frac{3}2\div\frac{9}6=-\frac{3}2\times\frac{6}{9}$

6 and 9 are both divisible by 3, so we can simplify 6/9 = 2/3.

$-\frac{3}2\times\frac{2}3$

We can multiply across right now, but we might as well cross cancel.
Look at the numbers diagonal from one another...-3 and 3 are both divisible by 3, so we can change them to -1 and 1...2 and 2 are both divisible by 2, so we can change them to 1 and 1...

$-\frac{1}1\times\frac{1}1$

Any fraction over 1 can just be expressed as a whole number.

$-1\times1$

Our final answer... $-\frac{3}2\div\frac{9}6=\boxed{-1}$

If you were to multiply across, (maybe you don't like cross cancelling, idk?) you'd get the same answer, of course.

$-\frac{3}2\times\frac{2}3=-\frac{6}6=\boxed{-1}$

6 0

3 years ago

Read 2 more answers

Which of the following is a solution of x2-2x=-8

cupoosta [38]

The last one
You’re completing the square here so you have to find (1/2b)^2. In this case it’s 1. So you have to add 1 to both sides. Then you have to solve for it
It becomes
(x-1)^2 = -7
Then you have to find the square root
(x-1) = √-7
x-1 = √7 √-1
x-1= ± i √7
x= 1 ±i √7
That’s your answer and d is the only one that matches with it

4 0

4 years ago

In 2005, 0.76% of all airline flights were on-time. If we choose a simple random sample of 2000 flights, find the probability th

marissa [1.9K]

Answer:

Step-by-step explanation:

Here X no of flight that reach on time has two outcomes only and each trial is independent of the other.

Since sample size is large we approximate to normal with mean =np and variance =npq

i.e. X is N(152,19.10)

$Z=\frac{x-152}{19.1}$ is used for converting to std normal variate