Please help if you know it.

Sarah wants to harvest the wheat in a 20 acre field in two days. If on the first day Sarah harvests 8 acres, what percent of the

bazaltina [42]

12 percent I hope this helped a lot

3 0

4 years ago

After Halloween, Kyle had 4 3/8 bags of candy. If Kyle gives 1 7/8

HACTEHA [7]

Answer:

2 1/2

Step-by-step explanation:

To solve this, we subtract 1 7/8 from 4 3/8 because Kyle "gives" away his candy. The answer to this is 2 1/2.

7 0

2 years ago

Read 2 more answers

An experiment was performed to compare the abrasive wear of two different laminated materials. Twelve pieces of material 1 were

vladimir1956 [14]

Answer:

The calculated value Z= 4.8389> 1.96 at 0.05 level of significance.

The null hypothesis is rejected.

There is significance difference between that the abrasive wear of material 1 not exceeds that of material 2 by more than 2 units

Step-by-step explanation:

Given data the samples of material 1 gave an average (coded) wear of 85 units with a sample standard deviation of 4

Mean of the first sample x₁⁻ =85

standard deviation of the first sample S₁ = 4

Given data the samples of material 2 gave an average of 81 and a sample standard deviation of 5.

Mean of the first sample x₂⁻ =81

standard deviation of the first sample S₂ = 5

<u>Null hypothesis: H₀:</u> there is no significance difference between that the abrasive wear of material 1 exceeds that of material 2 by more than 2 units

<u>Alternative hypothesis :H₁: </u>there is significance difference between that the abrasive wear of material 1 exceeds that of material 2 by more than 2 units

Assume the populations to be approximately normal with equal variances.σ₁² =σ₂²

The test statistic

$Z= \frac{x_{1} -x_{2} }{\sqrt{\frac{S^2_{1} }{n_{1} } +\frac{S^2_{2} }{n_{2} } } }$

Given n₁=n₂=60.

$Z= \frac{85-81 }{\sqrt{\frac{(4)^2 }{60 } +\frac{5^2 }{60} } }$

On calculation, we get

Z = $\frac{4}{\sqrt{0.6833} }$

z = 4.8389

The tabulated value Z =1.96 at 0.05 level of significance.

The calculated value Z= 4.8389> 1.96 at 0.05 level of significance.

The null hypothesis is rejected.

Conclusion:-

there is significance difference between that the abrasive wear of material 1 not exceeds that of material 2 by more than 2 units.

3 0

3 years ago

How were the policies of President Kennedy and President Johnson similar and different?

mart [117]

The ways that the policies of President Kennedy and President Johnson are similar and different is given below:

Both President were similar as they both were from heavily political and big families.
Kennedy and Johnson were known to be similar in a lot of the ways especially in the way that they ran the country.

After the assassination of Kennedy, Johnson was known to have followed the footsteps of his predecessor's and went ahead on implementing some of his programs. Johnson was known to have went ahead with the the anti-poverty program and the Civil Rights Bill.

<h3>What is a difference between John F. Kennedy and Lyndon Johnson?</h3>

The differences between the both presidents were:

President Kennedy was known to be a better public speaker when compared to President Johnson.

President Kennedy has his origin from the North, while that of Johnson was from the South.

President Kennedy was used to be seen in affluent crowd, but Johnson was known to be a simple Texan Man.

Conclusively, these two president were said to be very were similar, and yet they were different.

Learn more about President Kennedy from

brainly.com/question/13721861

4 0

3 years ago

HELP PLEASE DUE IN 3 MINUTES

pentagon [3]

Answer:

6 birds

Step-by-step explanation:

7+11+0=18

18/3=6

6 birds

7 0

3 years ago