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2 years ago

Hi please can you help me this is a new topic and I’m very confused

Mathematics

1 answer:

olchik [2.2K]2 years ago

8 0

Answer: the large jar is cheaper

Step-by-step explanation:

If you divide the £1.54 by 440g and £1.26 by 340g, you'll find which one is cheaper per gram :

1.54/440 = 0.0035

1.26/340 = 0.0037

So, by comparing both prices/gram, you've found that the large jar is cheaper.

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We wish to construct a 90% confidence interval on the mean of a population known to be normally distributed based on a sample of

sergiy2304 [10]

Answer:

Margin of error = 0.773

Step-by-step explanation:

We are given the following information in the question.

Sample size, n = 20

Sample mean = 8

Sample standard deviation = 2

90% Confidence interval

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 19 and}~\alpha_{0.10} = \pm 1.729$

Margin of error:

$t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$1.729(\frac{2}{\sqrt{20}} ) = 0.773$

7 0

3 years ago

A 9 B 18 C 4.5 D 19 Thanks

irina1246 [14]

Answer:

The answer is C. 4.5. Hope that helps.

Step-by-step explanation:

7 0

3 years ago

The Pythagorean theorem can only be used with witch type of triangle

HACTEHA [7]

Answer:

Right Triangles

Step-by-step explanation:

3 0

2 years ago

The graph of the function f(x)=4/5 sqrt x is shown. What is the domain of the function?

S_A_V [24]

Answer:

All real number greater than equal to zero.

Step-by-step explanation:

The function is given by

$f(x) = \frac{4}{5}\sqrt x$

The domain is defined as the input values so that the function is well defined.

here, the values of x should be all real number and zero also.

So, the correct option is (d).

5 0

2 years ago

Factor the following expression. x squared plus 14 x plus 48x2+14x+48

ASHA 777 [7]

Are you sure this is written correctly. It is not factorable as it is

5 0

3 years ago