The equation below can be used to find h, the number of hours it will take abbott and costello to prepare dinner. h/6 + h/18 = 1 how many hours will it take them to prepare dinner? -1 1/2 -4 1/2 -6 -9 == hailey, a chemistry student, is measured samples of a metallic substance for an experiemnt on density, using a balance that measures to 1/10 of a gram. which is the most accurate measurement based on the limitations of the balance that might be found in her recorded data? -9/01 grams -9.2 grams -9.24 grams. -9.244 grams. == students were asked to write a formula for the length of a rectangle by using the formula for its perimeter, p = 2l + 2w. three of their responses are shown below. i. l= 1/2p - w ii. l=(p - 2w) iii. l= p-2w / 2 which responses are correct? - i and ii - ii and iii - i and iii - i, ii, and iii == the first two should be switched, the first question asked is #14 and the second one asked is #13, the last one is #18 i really need with these questions, but if you have all the answers just so i can check my other answers that will be great < 3 i will give brainliest to the person who gives all the right answers (either to the three i asked or all 19 questions, excluding #12 which i have on my own : 3) i know thats alot to ask for but i really, really, need to pass this class so me!

1. 4.5 hour

The equation for time needed to prepare the diner is H/6 + H/18 = 1

To solve this question, you have to equalize the denominator of the equation. The greatest common multiple of 6 and 18 is 18, so you have to change the denominator to 18. The calculation would be:

H/6 + H/18 = 1

H/6 * 3/3 + H/18 = 1

3H/18 + H/18 = 1

4H/18 = 1

H= 18/4= 4.5

2. 9.2 grams

Halley measured samples of a metallic substance for an experiment on density with equipment that has lowest unit 1/10 gram or 0.1 gram. The equipment should not be able to differentiate unit lower than 0.1 gram, so it is not possible to have result such as 9.24 grams. or 9.244 grams.  

3. To find the formula to find length of a rectangle from its perimeter you need to move the length(l) into the left of the equation. The calculation would be:

p = 2L + 2w

p-2w=2L

2L= p-2w

L=1/2p -w

The equation of I is right, but the equation of II and III is not.

I. L= 1/2p - w  > right

II. L=(p - 2w)  ---> wrong, should be 2L=(p - 2w)  

III. L= P-2w / 2---> wrong, should be L= (P-2w)/ 2

its like this, "if i give a plant an unlimited amount of sunlight,then the plant will grow to its largest possible size."

hope it let me know if it does or doesn't =^-^=

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion