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3 years ago

What is 4 ÷ 1 1/8 please tell me

Mathematics

1 answer:

kogti [31]3 years ago

7 0

When dividing fractions, theres this thing you do call "keep, change, flip"

You keep the first fraction the same, change the division to a multiplication, and change the fraction to have the numbers flipped.

4 = 4/1

1 1/8 = 9/8

4/1 * 8/9 = 32/9

32/9 = 3 5/9

3 5/9 is the final answer

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A classic counting problem is to determine the number of different ways that the letters of "embarrass""embarrass" can be arrang

tamaranim1 [39]

Total number of letters in word "embarrass" = 9
Following letters are repeated:
Letter a occurs 2 times
Letter r occurs 2 times
Letter s occurs 2 times

The number of different ways the letters of word embarrass can be arranged can be calculated using permutations. The total number of different ways the letters of "embarrass" can be arranged will be:

$\frac{9!}{2!*2!*2!}=45360$

Thus there are 45360 different ways to arrange the letters of the word embarrass.

4 0

3 years ago

2 1. l = 8 feet w = 32 feet Find the are

Nonamiya [84]

Answer:

3 is 32 feet

Step-by-step explanation:

3 0

3 years ago

An article titled "Teen Boys Forget Whatever It Was" appeared in the Australian newspaper The Mercury (April 21, 1997). It descr

Step2247 [10]

Answer:

We conclude that the average attention span for teenage boys is less than 5 minutes.

Step-by-step explanation:

We are given that the mean time to distraction for teenage boys working on an independent task was 4 minutes.

Suppose that this mean was based on a random sample of 50 teenage Australian boys and that the sample standard deviation was 1.4 minutes.

Let $\mu$ = average attention span for teenage boys

SO, Null Hypothesis, $H_0$ : $\mu \geq$ 5 minutes {means that the average attention span for teenage boys is more than or equal to 5 minutes}

Alternate Hypothesis, $H_A$ : $\mu$ < 5 minutes {means that the average attention span for teenage boys is less than 5 minutes}

The test statistics that will be used here is One-sample t test statistics as we don't know about the population standard deviation;

T.S. = $\frac{\bar X -\mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample mean attention time span for teenage boys = 4 min

s = sample standard deviation = 1.4 min

n = sample of teenage boys = 50

So, the test statistics = $\frac{4-5}{\frac{1.4}{\sqrt{50} } }$ ~ $t_4_9$

= -5.051

Now at 0.01 significance level, the t table gives critical value of -2.405 at 49 degree of freedom for left-tailed test. Since our test statistics is less than the critical value of t as -2.405 > -5.051, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.

Therefore, we conclude that the average attention span for teenage boys is less than 5 minutes.

8 0

4 years ago

Speed of light is about 3.00x10^8 meters/seconds convert to meters/hours

mario62 [17]

3.00 X 10^8 m/s...
so, the light travels 1.08 X 10^12 m/h , 3.00 X 10^5 km/s and
8.33 X 10^7 km/h.

[ 3.00 X 10^8 * 3600 ; (there are 3600 seconds in an hour)
= 10800 X 10^8 m/s
= 1.08 X 10^12 m/h ]

4 0

3 years ago

plz help I will give the brainlist David drew this diagram of a picture frame he is going to make. Each square represents 1 squa

IRISSAK [1]

Answer:

Step-by-step explanation:

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3 years ago

What is 4 ÷ 1 1/8 please tell me ​

What is 4 ÷ 1 1/8 please tell me