All categories

3 years ago

3/6 divided by 5/6 because it’s on my revision list but I can’t work it out

Mathematics

1 answer:

Alex_Xolod [135]3 years ago

3 0

3/6 divided by 5/6 is the same as 3/6 times 6/5 which is equal to 3/5

You might be interested in

Brett is performing a hypothesis test in which the population mean is 310 and the standard deviation is 20. his sample data has

vova2212 [387]

The z-statistic for Brett's data is found to be as given by: Option A: -5.30 (approx).

<h3>How to find the value of z-statistic for population mean?</h3>

Suppose we're specified that:

The sample mean = $\overline{x}$
The population mean = $\mu$
The population standard deviation = $\sigma$
The sample size = n

Then the z-statistic for this data is found as:

$Z = \dfrac{\overline{x} - \mu}{\sigma/\sqrt{n}}$

For this case, we've got:

The sample mean = $\overline{x}$ = 295
The population mean = $\mu$ = 310
The population standard deviation = $\sigma$ = 20
The sample size = n = 50

Thus, we get:

$Z = \dfrac{\overline{x} - \mu}{\sigma/\sqrt{n}} = \dfrac{295 - 310}{20/\sqrt{50}} \approx -5.30$

Thus, the z-statistic for Brett's data is found to be as given by: Option A: -5.30 (approx).

Learn more about z-statistic here:

brainly.com/question/1640298

6 0

2 years ago

Read 2 more answers

2 Points

myrzilka [38]

Answer:

Step-by-step explanation:

First find the circumference of the circle with radius of 9 inches:

$C=2\pi r=2\pi \cdot 9=18\pi \ inches$

The full angle has 360°, so, to find the length of the arc DE, you can write:

$360^{\circ}\ - \ 18\pi \\ \\145^{\circ}\ - \ x$

which yields a proportion:

$\dfrac{360}{145}=\dfrac{18\pi}{x}\\ \\360x=145\cdot 18\pi\\ \\x=\dfrac{145\cdot 18\pi }{360}=\dfrac{145\pi}{20}=7.25\pi\approx 22.8\ inches$

6 0

3 years ago

Rewrite the expression with the given base.<br><br> 125^2x with a base of 5

jasenka [17]

Okay so you have to start by working out how many times you multiply 5 by itself to get 125.

5x5x5=125

therefore: (5^3)^2x) is the answer:)

6 0

3 years ago

Read 2 more answers

42° N LATITUDE , 83°W longitude

Andreas93 [3]

Lake Erie

Step-by-step explanation:

7 0

3 years ago

How do i simplify this expression -(f+3g-7)

pogonyaev

Answer:

-f-3g+7

Step-by-step explanation:

The negative sign on the outside of the bracket makes the numbers inside the brackets, the opposite sign. (minus becomes + and vis verser)

Have a nice day!!!!!!!!!!! :-)

7 0

3 years ago