Questions by David Hol

Questions by David Hol

A plumber charges $50 to visit a house plus $40 for every hour of work. Define a variable to represent the unknown quantity. Then write an expression to represent the total cost of hiring a plumber.

asked Sep 3, 2023

1 answer

19 votes

26.2k views

Which change to an object would reduce its kinetic energy by half

asked Apr 5, 2023

1 answer

17 votes

47.3k views

A _______________________ is a land- or sea-based control center that provides the facilities for human control of unmanned vehicles in the air or in space

asked Mar 26, 2023

1 answer

25 votes

30.5k views

What are the two main reasons doctors and scientists believe some people get cancer

asked Feb 28, 2023

1 answer

22 votes

10.2k views

20 POINTS: Why does the initial hill of a roller coaster need to be steep?

asked Dec 28, 2022

2 answers

3 votes

131k views

Citizens in (blank) receive 1.4 years of education on average. Citizens in (blank) earn $906 annually on average. This chart suggests that countries with a short life expectancy and low income have a (blank)

asked Dec 5, 2022

2 answers

5 votes

197k views

What are the products of Photosynthesis? in numbers and subscripts

asked Feb 23, 2022

1 answer

0 votes

185k views

How do I explain that c^2=b^2+a^2 is a right triangle?

asked Nov 28, 2021

1 answer

0 votes

76.0k views

Why do some compound have 1 hydrogen, some have 2 hydrogens, and some have 3 hydrogens?

asked Nov 28, 2021

1 answer

3 votes

95.8k views

8. You can use the Quick Styles drop-down menu to add a visual style to a shape or line. * True False

asked Oct 26, 2021

2 answers

2 votes

179k views

A circular gift has a 4.75 inch radius. Ilyssa wants to wrap a ribbon that costs $0.50 per inch around the gift. How much money will she spend?

asked Jul 9, 2021

1 answer

5 votes

18.5k views

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