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4 years ago

Please helpppp meee :(

Mathematics

2 answers:

allsm [11]4 years ago

8 0

Answer:

36.875 inches.

How I got this answer was by first multiplying 8 by 12 to get the measurement of the wall in inches. After finding the measurement of the wall in inches, I then subtracted the measurement of the picture frame ( after converting the fraction into a decimal ) from the length of the wall in inches. After completing this last step, I divided the number I got from subtracting, by 2 to find out the length of each side.

Hope this helps

- Madison Croskey

Step-by-step explanation:

Please mark me the brainliest.

kondor19780726 [428]4 years ago

6 0

Answer:

36.875 inches

Step-by-step explanation:

You might be interested in

Four sisters bought a present for their mother. They received a 10% discount on the original price of the gift. After the discou

Orlov [11]

Answer:

$40

Step-by-step explanation:

x is the original price of the gift

(10% of x) is the value of the discount

(10% of x) = 10/100 . x = 0.1 x

0.1 x is the value of the discount

x - (10% of x) is what was paid, after the discount

x - 0.1 x = 0.9 x

0.9 x is what was paid

4 children paid $9/each

4 times $9 = $36

$36 is the total amount that was paid by the children

$36 = 0.9 x

$36 / 0.9 = x

x = $36 / 0.9 = 360 / 9

x = 40

;-)

4 0

3 years ago

Members of the millennial generation are continuing to be dependent on their parents (either living with or otherwise receiving

Morgarella [4.7K]

Answer:

$\bf H_0:$ The mean of adults aged 18 to 32 that continue to be dependent on their parents is 0.3

$\bf H_a:$ The mean of adults aged 18 to 32 that continue to be dependent on their parents is greater than 0.3

b) 34%

c) practically 0

d) Reject the null hypothesis.

Step-by-step explanation:

Since an individual aged 18 to 32 either continues to be dependent on their parents or not, this situation follows a Binomial Distribution and, according to the previous research, the probability p of “success” (depend on their parents) is 0.3 (30%) and the probability of failure q = 0.7

According to the sample, p seems to be 0.34 and q=0.66

To see if we can approximate this distribution with a Normal one, we must check that is not too skewed; this can be done by checking that np ≥ 5 and nq ≥ 5, where n is the sample size (400), which is evident.

We can then, approximate our Binomial with a Normal with mean

$\bf np = 400*0.34 = 136$

and standard deviation

$\bf \sqrt{npq}=\sqrt{400*0.34*0.66}=9.4742$

Since in the current research 136 out of 400 individuals (34%) showed to be continuing dependent on their parents:

$\bf H_0:$ The mean of adults aged 18 to 32 that continue to be dependent on their parents is 0.3

$\bf H_a:$ The mean of adults aged 18 to 32 that continue to be dependent on their parents is greater than 0.3

So, this is a right-tailed hypothesis testing.

According to the sample the proportion of "millennials" that are continuing to be dependent on their parents is 0.34 or 34%

Our level of significance is 0.05, so we are looking for a value $\bf Z^*$ such that the area under the Normal curve to the right of $\bf Z^*$ is ≤ 0.05

This value can be found by using a table or the computer and is $\bf Z^*$ = 1.645

Applying the continuity correction factor (this should be done because we are approximating a discrete distribution (Binomial) with a continuous one (Normal)), we simply add 0.5 to this value and

$\bf Z^*$ corrected is 2.145

Now we compute the z-score corresponding to the sample

$\bf z=\frac{\bar x -\mu}{s/\sqrt{n}}$

where

$\bf \bar x$ = mean of the sample

$\bf \mu$ = mean of the null hypothesis

s = standard deviation of the sample

n = size of the sample

The sample z-score is then

$\bf z=\frac{136 - 120}{9.4742/20}=16/0.47341=33.7759$

The p-value provided by the sample data would be the area under the Normal curve to the left of 33.7759 which can be considered zero.

Since the z-score provided by the sample falls far to the left of $\bf Z^*$ we should reject the null hypothesis and propose a new mean of 34%.

7 0

3 years ago

Brian’s grandmother offered to give him a gift of 50% of the amount of money he saved in one year. His grandmother gave him $60.

Mice21 [21]

Answer:

$120

Step-by-step explanation:

7 0

3 years ago

Whats the explicit formula sequence

weeeeeb [17]

An explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). It defines the sequence as a formula in terms of n.

6 0

3 years ago

Which represents the inverse of the function f(x) = 4x?

kondor19780726 [428]

Answer:

Step-by-step explanation:

(1) = f(x) = 4x

$y = 4x\\x = 4y\\y = \frac{x}{4}\\f^{-1}(x) = \frac{x}{4}$