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2 years ago

12

The dairy king hold 64 cups of ice cream jerry uses a scoop that hold 1/4.how many scoops of ice cream can jerry get out each bu

cket of ice cream

1 answer:

Setler79 [48]2 years ago

8 0

Answer:

16 cups

Step-by-step explanation:

64 × .25=16

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Write >,< or = explain your choice

Zolol [24]

Answer:

7/4 > 3/4

4/10 < 7/10

2/5 = 4/10

9/10 < 11/10

11/5 > 2/5

6/12 > 1/4

5 0

2 years ago

Simplify: -0.8b+4.1c-(-3.2b)-0.1c

BigorU [14]

[ Answer ]

$\boxed{2.4b \ + \ 4c}$

[ Explanation ]

Simplify: -0.8b + 4.1c - (-3.2b) - 0.1c

-----------------------------------

Apply Rule: - (-a) = a

-0.8b + 4.1c + 3.2b - 0.1c

Group Like Terms

-0.8b + 3.2b + 4.1c - 0.1c

Add Similar Elements: -0.8b + 3.2b = 2.4b

2.4b + 4.1c - 0.1c

Add Similar Elements: 4.1c - 0.1c = 4c

2.4b + 4c

$\boxed{[ \ Eclipsed \ ]}$

8 0

2 years ago

A manufacturing company produces valves in various sizes and shapes. One particular valve plate is supposed to have a tensile st

maxonik [38]

Answer:

$z=\frac{5.0611-5}{\frac{0.2803}{\sqrt{42}}}=1.413$

$p_v =2*P(z>1.413)=0.158$

If we compare the p value and the significance level given $\alpha=0.1$ we see that $p_v>\alpha$ so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can't conclude that the average tensile strength is different from 5lbs/mm at 10% of signficance

Step-by-step explanation:

Data given and notation

$\bar X=5.0611$ represent the sample mean

$\sigma=0.2803$ represent the population standard deviation for the sample

$n=42$ sample size

$\mu_o =5$ represent the value that we want to test

$\alpha=0.1$ represent the significance level for the hypothesis test.

t would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the true mean is different from 5, the system of hypothesis would be:

Null hypothesis: $\mu = 5$

Alternative hypothesis: $\mu \neq 5$

If we analyze the size for the sample is > 30 but and we know the population deviation so is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Calculate the statistic

We can replace in formula (1) the info given like this:

$z=\frac{5.0611-5}{\frac{0.2803}{\sqrt{42}}}=1.413$

P-value

Since is a two sided test the p value would be:

$p_v =2*P(z>1.413)=0.158$

Conclusion

If we compare the p value and the significance level given $\alpha=0.1$ we see that $p_v>\alpha$ so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can't conclude that the average tensile strength is different from 5lbs/mm at 10% of signficance

8 0

2 years ago

George earned $50

abruzzese [7]

Well he earned $50 this week and $25 the following week, so 2/5 of $75 is $30

5 0

2 years ago

How do you do a expression

8090 [49]

1. get rid of your parenthesis
2. in order to do so you must look inside of the parenthesis and check if you have any like terms if so combine them
3. next use the distribution property or otherwise known as the rainbow
4. if you have an exponent to the right of your parenthesis then use the exponent rule
5. combine like terms by adding coefficients
6. finally combine the constants

5 0

2 years ago