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AleksAgata [21]

3 years ago

8

Last week, Saul ran more than one-fifth the distance that his friend Omar ran. If Saul ran 14 mile last week, how far did Omar r

un?

1 answer:

navik [9.2K]3 years ago

5 0

Im guessing here but... Omar ran 11.2 Miles

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if you can do any of these that would be great, just please tell me which ones you did and the more questions you do the more po

Oduvanchick [21]

Answer:

14. a = 16 14. b = No she doesn't have enough money to buy it

Step-by-step explanation:

14. a = 45 - 17 - 8 - 4 = 16

14.b she only got 16 dollars left and the T-shirt cost 19 dollar

3 0

2 years ago

A group of 59 randomly selected students have a mean score of 29.5 with a standard

algol [13]

Answer:

$29.5-1.671\frac{5.2}{\sqrt{59}}=28.37$

$29.5+1.671\frac{5.2}{\sqrt{59}}=30.63$

And we can conclude that the true mean for the scores are given by this interval (28.37; 30.63) at 90% of confidence

Step-by-step explanation:

Information given

$\bar X = 29.5$ represent the sample mean

$\mu$ population mean

s= 5.2 represent the sample standard deviation

n=59 represent the sample size

Confidence interval

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

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

The degrees of freedom are given by:

$df=n-1=59-1=58$

The Confidence interval is 0.90 or 90%, the significance is $\alpha=0.1$ and $\alpha/2 =0.05$ , and the critical value is $t_{\alpha/2}=1.671$

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

$29.5-1.671\frac{5.2}{\sqrt{59}}=28.37$

$29.5+1.671\frac{5.2}{\sqrt{59}}=30.63$

And we can conclude that the true mean for the scores are given by this interval (28.37; 30.63) at 90% of confidence

8 0

2 years ago

Heron's Formula:

zlopas [31]

Answer:

√s(s-a) (s-b) (s-c)

Step-by-step explanation:

123456

herons formula

6 0

1 year ago

If the map ratio of a map is 1:100000 and the distance between two

dsp73

Answer:

Given that,

Map scale = 1:100000

Map distance = 8cm

Therefore,

MD ÷ AD = 1 ÷ 100000

8 ÷ AD = 1 ÷ 100000

AD = 8 × 100000

AD = 800000

8 0

2 years ago

Solve for xxx. Your answer must be simplified. \dfrac x{-6}\geq-20 −6 x ≥−20

Tems11 [23]

Answer:

x ≤ - 27

Step-by-step explanation:

$\frac{x}{-9}\ge \:3\\\\\mathrm{Multiply\:both\:sides\:by\:-1\:\left(reverse\:the\:inequality\right)}\\\\\frac{x\left(-1\right)}{-9}\le \:3\left(-1\right)\\\\Simplify\\\\\frac{x}{9}\le \:-3\\\\\mathrm{Multiply\:both\:sides\:by\:}9\\\\\frac{9x}{9}\le \:9\left(-3\right)\\\\\mathrm{Simplify}\\\\x\le \:-27$

7 0

2 years ago