Recent activity by Paulo Costa

Recent activity by Paulo Costa

I need help answering this question in math

answered Dec 1, 2023

1 answer 149k views

A fire truck emits sound waves at a constant frequency. An observer stands several blocks away. Which statement best describes the sound waves perceived by the observer as the fire truck approaches? The

asked Aug 9, 2023

1 answer 134k views

Which ratios are equivalent to the given ratio? 15 to 30 Select each correct answer. 07:15 0 10:20 4 to 2 U 11 / 1 6 3

answered Aug 4, 2023

2 answers 56.5k views

The average distance from the center of the Earth to the center of the Moon is 384,400 km. Write this number in scientific notation O A. 3.844 x 102 OB. 3.844 x 105 O C. 38.44 x 104 OD. 3.844 x 10-5

answered May 25, 2023

1 answer 69.2k views

How many liters are in 2.3 moles of Naat STP?

answered Apr 20, 2023

1 answer 18.2k views

Why is there not much known about the history of Bhutan?

answered Apr 1, 2023

1 answer 4.9k views

Put words in order : time/from/is/King Charles II's/The/ghost

answered Feb 14, 2023

2 answers 176k views

Why is our legal system and imperfect

asked Feb 12, 2023

1 answer 228k views

If O is an angle in standard position and its terminal side passes through the point (8,-7), find the exact value of csc 0 in simplest radical form.

answered Jan 5, 2023

1 answer 37.6k views

RED SIDE OR BLUE SIDE

answered Dec 28, 2022

2 answers 199k views

Which expression represents the length, in inches, of the framed picture?

answered Oct 18, 2022

2 answers 139k views

If f′(x) = 3x^2 + 2x and f(2) = 3, then f(1) =

asked Oct 6, 2022

1 answer 194k views

Across which axis the two points are reflections of eachother (2,7) and (-2,7) Choices : A: x-axis B; y-axis

answered Sep 29, 2022

1 answer 28.6k views

A- which plant uses the wind to spread its seed

answered Sep 22, 2022

2 answers 171k views

What is 4( indicie-2) divided by 4 indicie 3

answered Sep 22, 2022

1 answer 64.1k views

Find the area of the shape below

answered Aug 23, 2022

1 answer 39.5k views

Define and explain the impact of strip mining.

asked Jul 21, 2022

1 answer 55.6k views

The Chromebook has 25% battery at the beginning of getting charged. An additional 1 percent is gained every 4 minutes. IPhone Answer this questions 1)which is charging faster 2)how much faster? 3)which

answered Jul 8, 2022

1 answer 45.0k views

Cesca measured the temperatures of the three different liquids in her Science Class . The temperature of the soft drink was 7 C. The temperature of the vinegar was 8 C higher than the temperature of the

asked Jun 2, 2022

2 answers 158k views

What effect did Martin Luther King jr. have on his world?

asked May 18, 2022

1 answer 181k views

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