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2 years ago

PLS HELP ME ON THIS QUESTION I WILL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER PLS GIVE ME A STEP BY STEP EXPLANATION!!

Mathematics

2 answers:

Alona [7]2 years ago

6 0

Answer:

B. 46:31

Step-by-step explanation:

lapo4ka [179]2 years ago

4 0

Answer:

46:31

Step-by-step explanation:

There are 46 beads in total (31 pink and 15 purple).

So, the ratio of the total number of beads to the number of pink beads is 46:31.

Hope this helps :)

You might be interested in

Y=x+2 y=-3X solve system of equations algebraically

goblinko [34]

Answer:

(x,y) = -1/2 , 3/2

Step-by-step explanation:

Let y = x +2 ----- (1)

y = -3x ------ (2)

Put equal both sides x +2 = -3x

x = -3x -2

x +3x = -2

4x = -2

x = -1/2 Put it in 2nd equation

Y = -3 (-1/2)

y = 3/2

so (x,y) = -1/2 , 3/2

Hope you got it.

Please Mark as Brainliest.

8 0

2 years ago

Help me plzzzzzzzzzzzzzzzzzzz

Shkiper50 [21]

Answer:

$5^8/5^6=5^2$

Step-by-step explanation:

When dividing numbers with powers, it is handy to remember that

$x^y/x^z=x^y^-^z$

$5^8/5^6=5^8^-^6 = 5^2$

4 0

2 years ago

Read 2 more answers

You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estim

pogonyaev

Answer:

$n=\frac{0.5(1-0.5)}{(\frac{0.025}{1.28})^2}=655.36$

And rounded up we have that n=656

Step-by-step explanation:

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 80% of confidence, our significance level would be given by $\alpha=1-0.80=0.20$ and $\alpha/2 =0.10$ . And the critical value would be given by:

$z_{\alpha/2}=\pm 1.28$

Solution to the problem

The margin of error for the proportion interval is given by this formula:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

Since we don't have prior info for the proportion of interest we can use $\hat p=0.5$ as estimator. And on this case we have that $ME =\pm 0.025$ and we are interested in order to find the value of n, if we solve n from equation (a) we got: