Recent activity by Paulo Mattos

Recent activity by Paulo Mattos

A substance, A2B, has the composition by mass of 60% A and 40% B. What is the composition of AB2 by mass?a)40% A, 60% Bb)50% A, 50% Bc)27% A, 73% Bd)33% A, 67% Be)none of these

answered Dec 15, 2023

1 answer 111k views

The box plot represents this data set. 17, 40, 80, 82, 86, 90, 99 What value does the letter A represent on the box plot of the data? Enter your answer in the box. Help ASAP!!

asked Jul 23, 2023

2 answers 199k views

Which ratios can make a proportion. 3/5 and 9/25. 4/10 and 10/25. 4/11 and 6/13. 4/9 and 9/4

asked Jun 9, 2023

1 answer 1.2k views

Please Help! What is 3,198.7 as a fraction

answered Mar 7, 2023

2 answers 60.7k views

The art criticism process that determinies the style portrayed in work of art is

asked Feb 21, 2023

1 answer 88.6k views

I need help please ;) 5. The half-life of 1-131 is 8.07 days. If 25 g are left after 40.35 days, how many grams were in the original sample?

asked Feb 10, 2023

2 answers 88.3k views

Translate into an equation. The sum of seven and a number, x, is five.

answered Jan 28, 2023

1 answer 4.8k views

Absolute value of 4 is

answered Jan 12, 2023

2 answers 164k views

Y=-5x+30 7x+3y=42 1111

answered Nov 25, 2022

1 answer 84.4k views

Write a story about something you accomplished. Describe what you did to achieve success, and how you reached your goal. Were there obstacles you had to overcome? This is a tricky essay topic because sometimes

answered Nov 19, 2022

1 answer 174k views

1 x [4 + 6 x 3} - 9 Hurry solve

asked Nov 5, 2022

1 answer 29.4k views

Find the mode, median, mean, and range for each data set. Round the mean to two decimals places, where necessary.

answered Oct 28, 2022

2 answers 159k views

I NEED HELP ILL MARK!!!

asked Oct 24, 2022

1 answer 104k views

The use of electricity in most of American industry brought economic hardship to the timber industry oil industry hydropower industry coal industry

asked Aug 2, 2022

1 answer 85.4k views

Conflict and Cooperation in Germany During the Reformation • Posting of the Ninety-Five Theses (1517) beginning of the Protestant Reformation • Peasants' War (1524–1525) a war between German peasants and

asked Jun 24, 2022

1 answer 27.8k views

The volume of a square pyramid is given by the formula, V = 13hx2, where h is the height of the pyramid and x is the length of one side of the base. If a pyramid has a height of 15 ft and a volume of 2,

asked Jun 6, 2022

1 answer 160k views

Explain the term majority and minority carriers of a material with respect to the acceptor and donor impurity.

asked May 20, 2022

2 answers 186k views

What theme is supported by this passage?

answered Mar 20, 2022

2 answers 67.5k views

Taxes are often owned on A. Initial investment B.the current value of investment C.the real value of investment D.investment returns

asked Mar 6, 2022

2 answers 38.0k views

1/3 (x -10) = -4 x = ?

answered Jan 19, 2022

2 answers 204k views

Search QAmmunity.org