Which expression forms an equation with the given expression? 8x7-4=

6. rolling a 1, 2, or 3 on the first roll of a 1-6 number cube and

sp2606 [1]

Answer: The probability is 1/4

Step-by-step explanation:

The odds of rolling a 1,2, or 3 on the first roll is 3/6 or 1/2.

The odds of rolling a 4,5, or 6 on the second roll is also 3/6 or 1/2

The odds all together is 1/4 because 1/2 divided by 1/2 is 1/4.

If I’m wrong tell me

7 0

3 years ago

The actual height of a book is 914 inches. Beverly estimates the height of the book and finds her percent error to be less than

s2008m [1.1K]

Answer: 8.88 inches & 9.62 inches

Step-by-step explanation:

i took the test

6 0

2 years ago

In a certain triangle, the hypotenuse is 8 cm longer than the first leg and 1 cm longer than the second. Find the lengths of the

anzhelika [568]

Hyp: 8+x
Leg1: x
Leg2: x+7

Pythagorean triplet 5,12 &13 works

5 cm, 12 cm and 13 cm(Hypotenuse)<span />

7 0

3 years ago

1. Suppose you have a variable X~N(8, 1.5). What is the probability that you have values between (6.5, 9.5)

Natalija [7]

Answer:

0.6826 = 68.26% probability that you have values in this interval.

Step-by-step explanation:

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

X~N(8, 1.5)

This means that $\mu = 8, \sigma = 1.5$

What is the probability that you have values between (6.5, 9.5)?

This is the p-value of Z when X = 9.5 subtracted by the p-value of Z when X = 6.5. So

X = 9.5

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{9.5 - 8}{1.5}$

$Z = 1$

$Z = 1$ has a p-value of 0.8413.

X = 6.5

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{6.5 - 8}{1.5}$

$Z = -1$

$Z = -1$ has a p-value of 0.1587

0.8413 - 0.1587 = 0.6826

0.6826 = 68.26% probability that you have values in this interval.

7 0

3 years ago

Mrs.Fernandez must drive 6 1/9 miles to work every day. How many miles will Mrs.Fernandez have driven after 12 days of work?

Serjik [45]

Well since we know that for one day Mrs. Fernandez drives 6 and 1/9 miles to work what could we do to get 12 days of work driven.
all we have to do here is multiply 12 and 6 and 1/9 :) lets set this up
1 1 12
6 ---- x 12 or lets set this up like this 6 ---- x -----
9 9 1

but lets change that whole fraction into an improper fraction
1
6 ---- so all we do is multiply 6 x 9 and add the 1 so lets try that
9
6 x 9 = 54
54 +1 = 55
hey look we have our numerator!! ( the top number)
and our bottom number would stay the same as 9 so lets try this again:)
55
----- now lets plug it in to our problem
9

55 12
----- x -----
9 1

now lets just multiply across

55 12 = 55 x 12 = 660
----- x -----
<span> 9 1 = 9 x 1 = 9
</span>
so now our fraction look like this
660
-------
9
but lets make it not look so confusing and divide 660 by 9
660/9 = 73.33333333
again it still looks confusing but we can round it out to beeeee
73
so this means that for 12 days Mrs. Fernandez drove 73 miles!
hope this isnt confusing;)
have a good one and mark me brainliest!

3 0

4 years ago