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3 years ago

How to do that problem?

Mathematics

1 answer:

maksim [4K]3 years ago

4 0

Its algebra.. try making a statement with x or ys. Ex: if i wanna know for every 4 cookies in how many pack or sumthing.. i do 4x=how many packs they need

You might be interested in

What number is equivalent to 6.75×10^-4

Leni [432]

Not sure what your asking but:
0.000675 is equivalent to 6.75x10^-4

hope this helps

4 0

3 years ago

The difference between two numbers is 3. The sum of the same tow numbers is 13. What is the

Ber [7]

Answer: 40

Step-by-step explanation:

Let the two numbers be a and b.

Therefore,

a - b = 3 ....... i

a + b = 13 ....... ii

From equation I, a = 3 + b

Put a = 3+b into equation ii

a + b = 13

3 + b + b = 13

3 + 2b = 13

2b = 13 - 3

2b = 10

b = 10/2

b = 5

Since a = 3 + b

a = 3 + 5

a = 8

The product of the numbers will be:

= 8 × 5

= 40

6 0

3 years ago

Multiply (x - 4)(2x + 3) using the foil method show the foil method products

AVprozaik [17]

(x - 4)(2x + 3)

Using foil:

2x^2 + 3x - 8x - 12

Simplify.

2x^2 - 5x - 12 is the product after using FOIL.

8 0

4 years ago

Read 2 more answers

Consider the following hypothesis test:

Gnom [1K]

Answer:

a. z=3.09. Yes, it can be concluded that the population mean is greater than 50.

b. z=1.24. No, it can not be concluded that the population mean is greater than 50.

c. z=2.22. Yes, it can be concluded that the population mean is greater than 50.

Step-by-step explanation:

We have a hypothesis test for the mean, with the hypothesis:

$H_0: \mu\leq50\\\\H_a:\mu> 50$

The sample size is n=55 and the population standard deviation is 6.

The significance level is 0.05.

We can calculate the standard error as:

$\sigma_M=\dfrac{\sigma}{\sqrt{n}}=\dfrac{6}{\sqrt{55}}=0.809$

For a significance level of 0.05, the critical value for z is zc=1.644. If the test statistic is bigger than 1.644, the null hypothesis is rejected.

a. If the sample mean is M=52.5, the test statistic is:

$z=\dfrac{M-\mu}{\sigma_M}=\dfrac{52.5-50}{0.809}=\dfrac{2.5}{0.809}=3.09$

The null hypothesis is rejected, as z>zc and falls in the rejection region.

b. If the sample mean is M=51, the test statistic is:

$z=\dfrac{M-\mu}{\sigma_M}=\dfrac{51-50}{0.809}=\dfrac{1}{0.809}=1.24$

The null hypothesis failed to be rejected, as z<zc and falls in the acceptance region.

c. If the sample mean is M=51.8, the test statistic is:

$z=\dfrac{M-\mu}{\sigma_M}=\dfrac{51.8-50}{0.809}=\dfrac{1.8}{0.809}=2.22$

The null hypothesis is rejected, as z>zc and falls in the rejection region.

8 0

4 years ago

Explain how to determine the diameter of any circle given the circumference.

Murrr4er [49]

Answer:

circle of diagram (89).&"71

3 0

3 years ago