Recent activity by Amir Rezaei

Recent activity by Amir Rezaei

Common salt and ammonia are separated by which method? A. Distillation B. Filtration C. Precipitation D. Ion-exchange chromatography

asked Oct 26, 2024

1 answer 62.9k views

The mean height of adult males is 72 inches, with a standard deviation of 2,5 inches. Consider the heights to follow a normal distribution. A. If a man is 71 inches tall, in what percentile does he lie?

answered Jun 12, 2024

1 answer 167k views

You only had enough money to buy three goldfish. The tank's volume is 9,000 cm³. When you added them to the tank, you noticed that the water level rose 1 cm. What is the total volume of the 3 goldfish?

answered Apr 20, 2024

1 answer 107k views

Muchas personas aún prefieren los medios de comunicación de impresión. Los reporteros y las publicaciones escritos se conocen como O los anuncios O los periódicos O los medios O la prensa

answered Mar 24, 2024

1 answer 81.3k views

The average number of customers at the cafe fell by 10% in the month of May. If 140 fewer customers visited the cafe in May, how many customers visited in April?

answered Jan 10, 2024

1 answer 115k views

What was the united states policy to stop the spread of communism

answered Jan 1, 2024

2 answers 167k views

The __________ includes all of the water that is underground, in surface bodies, and in the atmosphere. Group of answer choices lithosphere hydrosphere aquasphere halosphere

asked Dec 23, 2023

1 answer 58.1k views

What is the mean of the data? Select one: 13 1 6 9

answered Oct 8, 2023

2 answers 11.0k views

The value of y varies inversely with the square of x, and y = 4, when x = 5. What is y when x=10

answered Aug 17, 2023

2 answers 99.8k views

What is the median of 0.8, 1.0, 2.7, 2.8, 3.1, 13.3

answered Jul 22, 2023

2 answers 64.3k views

Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (high musical aptitude). This year's results were:Aptitude Score012345Frequency

asked May 14, 2023

1 answer 228k views

Describe in words where the square root of 60 minus 11 would be plotted on a number line.

asked Apr 15, 2023

1 answer 93.2k views

This is algebra 2 I’m confused a little bit, I remember the format but it’s a little wonky I guess!

answered Feb 22, 2023

1 answer 46.4k views

What contribution did John Hancock make to the founding of the United States? A. He drafted the Declaration of Independence. B. He led the Continental Army in the war against Britain. C. He proposed the

answered Nov 30, 2022

1 answer 120k views

What is the area of the shape? (Number only)

answered Nov 26, 2022

2 answers 165k views

Which city is probably closer to Gaborone, Botswana a. Windhoek, Namibia b. Harare, Zimbabwe? c. Cape Town, South Africa d. Mbabane, Swaziland

answered Oct 29, 2022

2 answers 217k views

Please help me i need it it is a true or false

asked Aug 11, 2022

1 answer 223k views

For a raffle, there is a 1st Place Prize of $50, a 2nd Place Prize of $25, and a 3rd Place Prize of $10. If there are 25 total entries, how many different winners can the raffle have?

answered Jul 12, 2022

1 answer 217k views

5 times a number decreased by 18 minus 4 times the same number is -36

asked Jul 7, 2022

2 answers 58.1k views

Write the quadratic equation in standard form: 5x2 + 3 = x

asked Jul 5, 2022

1 answer 111k views

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