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3 years ago

Rewrite 0.55 as a percent

Mathematics

2 answers:

valentinak56 [21]3 years ago

5 0

It is 55% because just multiply it by 100.

mixas84 [53]3 years ago

3 0

The answer to this is 55%

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In an effort to estimate the mean of amount spent per customer for dinner at a major Lawrence restaurant, data were collected fo

larisa86 [58]

Answer:

The 99% confidence interval for the population mean is 22.96 to 26.64

Step-by-step explanation:

Consider the provided information,

A sample of 49 customers. Assume a population standard deviation of $5. If the sample mean is $24.80,

The confidence interval if 99%.

Thus, 1-α=0.99

α=0.01

Now we need to determine $z_{\frac{\alpha}{2}}=z_{0.005}$

Now by using z score table we find that $z_{\frac{\alpha}{2}}=2.58$

The boundaries of the confidence interval are:

$\mu-z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80-2.58\times \frac{5}{\sqrt{49}}=22.96\\\mu+z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80+2.58\times \frac{5}{\sqrt{49}}=26.64$

Hence, the 99% confidence interval for the population mean is 22.96 to 26.64

3 0

3 years ago

How are angles 1,2,3,4 related in the trapezoid

Alex

Answer:

The degree measure of the four add up to 360 degrees. This is actually true of any quadrilateral. Let lower case letter a,b,c and d represent the angle of trapezoid ABCD. Then a+b+c+d= 360 degreees.

5 0

2 years ago

6x squared plus 12x plus 13 equals 2x squared plus 4

Andrews [41]

$12x^2+12x+3=2x^2+4\\\\12x^2-2x^2+12x+3-4=0\\\\10x^2+12x-1=0\\\\a=10;\ b=12;\ c=-1\\\\\Delta=12^2-4\cdot10\cdot(-1)=144+40=184\\\\x_1=\frac{-b-\sqrt\Delta}{2a};\ x_2=\frac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{184}=\sqrt{4\cdot46}=2\sqrt{46}\\\\x_1=\frac{-12-2\sqrt{46}}{2\cdot10}=\frac{-6-\sqrt{46}}{10};\ x_2=\frac{-12+2\sqrt{46}}{2\cdot10}=\frac{-6+\sqrt{46}}{10}$

6 0

2 years ago

Expand and simplify each expression. 3(m + 2) + 4(6 + m) = Response area 5(2p + 5) + 4(2p −3) =

SVEN [57.7K]

Answer:

Step-by-step explanation:

3(m+2)+4(6+m)

3m+6+24+4m

3m+4m+6+24

7m+30

--------------------

5(2p+5)+4(2p-3)

10p+25+8p-12

10p+8p+25-12

18p+13

6 0

2 years ago

Is this a function Yes Or No

Llana [10]

Answer:

Step-by-step explanation:

Because i said so.

7 0

3 years ago

Read 2 more answers