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3 years ago

What is 3×1/8,what is 5×2/3

Mathematics

2 answers:

victus00 [196]3 years ago

4 0

1. 3/8 2. 10/3 which you can simplify to 3 1/3

maksim [4K]3 years ago

3 0

The answers above me are wrong you have to find a common denominator first
1. 3/8
2. 3 1/3

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An experiment consists of flipping a fair coin 4 times. What is the probability of obtaining at least one head?

bazaltina [42]

1/2 * 1/2 * 1/2 * 1/2 = 1/8

5 0

3 years ago

The triangle shown below has an area of 12.<br><br> find x

Gnoma [55]

Step-by-step explanation:

$area \: of \: triangle = \frac{1}{2} \times 6 \times x \\ \\ \therefore \: 12 = 3 \times x \\ \\ \therefore \: x = \frac{12}{3} \\ \\ \: \: \: \: \: \: \: \: \huge \purple{ \boxed{\therefore \: x = 4}}$

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3 years ago

A university with a high water bill is interested in estimating the mean amount of time that students spend in the shower each d

Bas_tet [7]

Answer: $(4.0845,\ 6.5755)$

Step-by-step explanation:

As per given , we have

n = 11

$\overline{x}=5.33\\\\ s=1.33$

Since population standard deviation is missing, so we use t-test.

Critical t-value for 99% confidence :

$t_{\alpha/2,\ n-1}=3.106$ [using two-tailed t-value table]

Confidence interval :

$\overline{x}\pm t_{\alpha/2}\dfrac{s}{\sqrt{n}}\\\\= 5.33\pm (3.1060)\dfrac{1.33}{\sqrt{11}}\\\\\approx5.33\pm1.2455\\\\=(5.33-1.2455,\ 5.33+1.2455)\\\\=(4.0845,\ 6.5755)$

Hence, 99% confidence interval for the mean amount of time that students spend in the shower each day.= $(4.0845,\ 6.5755)$

7 0

3 years ago

Can someone help me on this with the steps? thanks!

soldi70 [24.7K]

Answer:

8h + 15 = 39

Step-by-step explanation:

The base fee is 15 so you shouldn't multiply the hours by it.

The question states 8 per hour which means that you should multiply the 8 by hours and add on the base fee which is 15.

8 0

3 years ago

Read 2 more answers

Can someone solve this? The answer needs to be in fraction form so can't be done by a calculator.

Lesechka [4]

Answer:

9 1/6

You may use a fraction calulator for this question by the way!

Hope this helps!

Sorry if its wrong!

Have a nice day!

7 0

3 years ago