How can I work out 30% of (blank) is 60?

You and your friend are baking some cookies for your classmates. The recipe you have called for ½ cup of sugar. If you don’t hav

Vanyuwa [196]

Answer:

just need points

Step-by-step explanation:

7 0

3 years ago

Javier designs leather shoes at his workshop. He charges $45 for women's shoes and $50 for men's shoes. He needs to make $2,500

Molodets [167]

It total Javier is gonna need to sell at least 50 shoes in that week that are only mens shoes if he doesnt get any female customers

6 0

3 years ago

What is length weight height and value mean

mash [69]

Oh don't worry it means length,width and height so you multiply LxWxH

3 0

3 years ago

Past experience has indicated that the breaking strength of yarn used in manufacturing drapery material is normally distributed

vlabodo [156]

Answer:

95% two-sided confidence interval on the true mean breaking strength is (94.8cm, 99.2cm)

Step-by-step explanation:

Our sample size is 11.

The first step to solve this problem is finding our degrees of freedom, that is, the sample size subtracted by 1. So

$df = 11-1 = 10$ .

Then, we need to subtract one by the confidence level $\alpha$ and divide by 2. So:

$\frac{1-0.95}{2} = \frac{0.05}{2} = 0.025$

Now, we need our answers from both steps above to find a value T in the t-distribution table. So, with 10 and 0.025 in the two-sided t-distribution table, we have $T = 1.812$

Now, we find the standard deviation of the sample. This is the division of the standard deviation by the square root of the sample size. So

$s = \frac{4}{\sqrt{11}} = 1.2060$

Now, we multiply T and s

$M = Ts = 1.812*1.2060 = 2.19/tex]For the lower end of the interval, we subtract the sample mean by M. So the lower end of the interval here is[tex]L = 97 - 2.19 = 94.81 = 94.8$ cm

For the upper end of the interval, we add the sample mean and M. So the upper end of the interval here is

$L = 97 + 2.19 = 99.19 = 99.2$ cm

So

95% two-sided confidence interval on the true mean breaking strength is (94.8cm, 99.2cm).

7 0

3 years ago

Which of the following will form the composite function?

zhuklara [117]

Answer:

B

Step-by-step explanation:

In the composition of f and g, the equation is telling us to place the function f inside g. Observing in B that f is (x + 4), then this can be put in place of the x in 3x^2, making it 3(x + 4)^2 and finally the minus 5.

5 0

3 years ago