Questions by Alexandru Petrescu

Questions by Alexandru Petrescu

The outer edge of a circular running track is 330m long. If it is widened by 7m all around, find the cost of widening it at 8 per square metre.

asked Oct 26, 2021

1 answer

1 vote

104k views

What are some facts about gold

asked Oct 3, 2021

2 answers

3 votes

173k views

Beryllium-11 is a radioactive isotope of the alkaline metal Beryllium. It decays at a rate of 4.9% every second. Assuming you started with 100%, how much would be left after 45 seconds?\

asked Jun 15, 2021

1 answer

0 votes

20.6k views

Evaluate the expression. 9−32÷4

asked Apr 23, 2021

2 answers

0 votes

30.4k views

1. Saturated steam at 4 bars absolute pressure with a mean velocity of 3 m/s flows through a horizontal SS304 stainless-steel pipe whose inner and outer diameters are 55 and 65 mm, respectively. The heat

asked Apr 22, 2021

1 answer

1 vote

38.2k views

An experiment is carried out 400 times. The possible outcomes are 'VOID', 'FAIL' and 'SUCCESS'. a) Complete the table. Outcome VOID FAIL SUCCESS Frequency 96 60 76.87 Relative frequency 0.24 0.15 0.61

asked Mar 20, 2021

1 answer

5 votes

99.9k views

Cambridge has a job mowing lawns. He mowed 5 lawns last week and earned $82.50. The table shows his earnings for the week. Which coordinate pair represents the unit rate for this situation? A) (0, 0) B)

asked Mar 2, 2020

2 answers

5 votes

173k views

How are medical providers most likely to be grouped in searches? by cost by specialty by availability by competence

asked Feb 3, 2020

2 answers

0 votes

105k views

The amount of $5.40 is 9% of what price?

asked Nov 8, 2019

2 answers

3 votes

131k views

Please help :) have an amazing day

asked Aug 28, 2019

1 answer

4 votes

159k views

Identify the countries that belonged to each of the two European alliances

asked Aug 20, 2019

1 answer

5 votes

119k views

Reﬂect on the argument that ralph and jack have. why does jack suddenly feel empowered to openly challenge ralph and "the rules?" (91).

asked Aug 15, 2019

1 answer

5 votes

21.7k views

What causes jane to question and fear the events of the third floor?

asked Mar 25, 2019

1 answer

4 votes

224k views

What is the algebraic expression for "a number q tripled"?

asked Mar 23, 2019

1 answer

1 vote

55.3k views

What were the treatments for polio in the 1940s and 1950s? What treatments were developed more recently?

asked Feb 1, 2019

1 answer

2 votes

105k views

Please help me. In Figure 13-1, Piston 1 exerts a pressure of 10 Pa on the fluid in the hydraulic lift. What is the fluid pressure on Piston 2? A. 5 pa B. 30 pa C. 1 pa D. 90 pa

asked Aug 11, 2018

1 answer

1 vote

85.6k views

The ancient language of India is called _____. Linear A Sanskrit Linear B Shinto

asked Nov 12, 2017

1 answer

5 votes

90.9k views

What was one of the direct results of the Cuban Missile Crisis? a) the beginning of nuclear arms reduction negotiations b) the weakening of communist control of Cuba c) a plan to allow Cubans to immigrate

asked Mar 25, 2017

2 answers

5 votes

182k views

How do you solve x+5y=-3 3x-2y=8

asked Jan 13, 2016

2 answers

5 votes

211k views

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