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3 years ago

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4-2. For each tile pattern in problem 4-1, draw figures 0, 4, and 5 on graph paper. If it helps, copy figures 1, 2, and 3 obto y

our paper

1 answer:

balu736 [363]3 years ago

5 0

the answer is d and e

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Is either is either x equals 20 or x equals 12 the solution to X -8 = 4

Contact [7]

Answer:

12

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

HELPPPPPPPPPPPP PLZZZZZZZZZZZZ<br> NO LINKS PLEASE AND THANK YOU .

Angelina_Jolie [31]

Let’s choose the first one, and do the proportions.

x/30 = 90/100
Cross multiply and you have
100x = (30)(90)
100x = 2700
x = 27

And the fourth one: multiply by the decimal equivalent of the percent.
90% = 90/100 = 0.9
0.9 x 30 = 27

You chose these because your “online tutor” finds them easiest to explain XD

4 0

3 years ago

1. Ann took out a loan at the Bank of Florida with a principle amount of $12,000, at an interest rate of 5.65% for 4 years. What

fredd [130]

Answer:

1. $2,950.62

2. $93.75

Step-by-step explanation:

Ann took out a loan of = $12,000

At an interest rate of = 5.65%

Time = 4 years

Formula of compound interest = $A=P(1+\frac{r}{n})^{nt}$

= $A=12,000(1+\frac{0.0565}{1})^{1\times 4}$

= $12,000(1.0565)^{4}$

= 12,000 × 1.24588514

Interest = Amount - principal amount

= $14,950.62 - 12,000

= $2,950.62

Amount that Dan borrowed = $1,250

rate of interest = 5%

Time = 18 months or 1.5 years

Formula of simple interest = P(1+rt)

= 1250(1+(0.05 × 1.5))

= 1250(1+0.075)

= 1250 × 1.075

= 1343.75

Interest = Amount - principal

I = 1343.75 - 1250

= $93.75

8 0

3 years ago

80% of all households have a rice cooker. 35% of all households have a rice cookers and an instant pot. What is the probability

zzz [600]

Answer:

A rice cooker, also known as a rice steamer, is a popular small appliance that works like a slow cooker by using moist heat to cook food while trapping the flavors in the pot until it’s ready to enjoy. Modern rice pressure cookers significantly reduce rice-making time and often feature a warming setting so you can be flexible with meal times.

Step-by-step explanation:

3 0

3 years ago

The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airp

ale4655 [162]

Answer:

$6.26-2.01\frac{2.47}{\sqrt{50}}=5.56$

$6.26+2.01\frac{2.47}{\sqrt{50}}=6.96$

So on this case the 95% confidence interval would be given by (5.56;6.96)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

In order to calculate the mean and the sample deviation we can use the following formulas:

$\bar X= \sum_{i=1}^n \frac{x_i}{n}$ (2)

$s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}}$ (3)

The mean calculated for this case is $\bar X=6.26$

The sample deviation calculated $s=2.47$

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=50-1=49$

Assuming a Confidence of 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.025,49)".And we see that $t_{\alpha/2}=2.01$

Now we have everything in order to replace into formula (1):

$6.26-2.01\frac{2.47}{\sqrt{50}}=5.56$

$6.26+2.01\frac{2.47}{\sqrt{50}}=6.96$

So on this case the 95% confidence interval would be given by (5.56;6.96)

6 0

3 years ago