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kykrilka [37]
3 years ago
8

Add the following two fractions. 9/4+5/6=

Mathematics
1 answer:
lara31 [8.8K]3 years ago
5 0
The answer is:
37/12
and if you are looking for a mixed number form it is: 3  1over 12
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The city of Omaha decided to build a new parking garage in hopes of luring more people to the Old Market district.The city will
dimulka [17.4K]

Answer:

Given:

Mean, u = 135

Sample size, n = 42

Sample mean, x' = 126

Standard deviation = 16

Significance level = 0.05

1) The null and alternative hypotheses:

H0 : u = 135 (the revenue per day is $135)

H1 : u < 135 (the revenue per day is less than $135)

2) In this case, we have a left tailed test.

Let's use the formula:

= \frac{x' - u}{s/ \sqrt{n}} = \frac{126 - 135}{16 / \sqrt{42}} = -3.645

t = - 3.645

Critical value: at a significance level of 0.05, left tailed test,

tcritical = -1.683

We reject null hypothesis, H0, since t calculated, -3.645 is less than tcritical, -1.683.

3) Given, a = 0.05, df = 41, left tailed test,

t-value = 2.02

For the corresponding confidence interval, we have:

CI = (x' - \frac{t * \sigma}{\sqrt{n}}, x' + \frac{t * \sigma}{\sqrt{n}})

CI = (126 - \frac{2.02 * 16}{\sqrt{42}}, 126 + \frac{2.02 * 16}{\sqrt{42}})

CI = (121.014, 130.986)

4) Conclusion:

We reject the estimated potential revenue advised by the consultant, H0, as it is too high, because the t-calculated falls in rejection region(i.e, less than critical value), also the upper limit of the confidence interval is less than $135.

5 0
3 years ago
Someone who actually knows what they doing please ‍♀️
Firdavs [7]

Answer:

-2/5

Step-by-step explanation:

2(4a+1)=3a

Expand parentheses:

8a+2=3a \\\\5a=-2 \\\\a=-\dfrac{2}{5}

Hope this helps!

6 0
3 years ago
Read 2 more answers
Subtract 3x²-5x+7from5x²-7x+9​
alexgriva [62]

Answer:

2x^2-2x+9

Step-by-step explanation:

5x^2-7x+9-3x^2+5x\\=5x^2-3x^2-7x+5x+9\\= 2x^2-2x+9

5 0
2 years ago
Find all values of $x$ such that $\sqrt{4x^2} - \sqrt{x^2} = 6$.
artcher [175]

For this case we must solve the following equation:

\sqrt {4x ^ 2} - \sqrt {x ^ 2} = 6

To solve we follow the steps below:

We square both sides of the equation squared:

(\sqrt {4x ^ 2} - \sqrt {x ^ 2}) ^ 2 = 6 ^ 2\\(\sqrt {4x ^ 2}) ^ 2-2 (\sqrt {4x ^ 2}) (\sqrt {x ^ 2}) + (\sqrt {x ^ 2}) ^ 2 = 36\\4x ^ 2-2 (\sqrt {4x ^ 2 * x ^ 2}) + x ^ 2 = 36\\4x ^ 2-2 (\sqrt {4x ^ 4}) + x ^ 2 = 36\\4x ^ 2-2 (2x ^ 2) + x ^ 2 = 36\\4x ^ 2-4x ^ 2 + x ^ 2 = 36\\x ^ 2 = 36\\x = \pm \sqrt {36}\\x = \pm6

We choose the positive value because we talk about $. x = 6

Answer:

$6

8 0
3 years ago
Which is equivalent to sqaure root 10 ^ 3/4x​
Digiron [165]

Answe√1000/2x

Step-by-step explanation:

√10³/4x=√1000/2x

7 0
3 years ago
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