subject
Mathematics, 23.09.2021 18:50 pedro48

Cho had $2.85 in nickels and $3.40 in dimes. Then she gave an equal number of her nickels and dimes to her brother. Now Cho has the same amount of money in nickels as in dimes.

The equation 285 -5x = 340 - 10z represents the situation.

Which does the variable x represent?

A

number of dimes Cho had

B

number of nickels Cho gave her brother

C

value of the dimes Cho gave her brother

D

how many more nickels than dimes Cho had

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 15:00
The lee family bought their home for $220,000 this year. the equation =220,000(1.038) v = 220 , 000 ( 1 . 038 ) x can be used to find the value, v, of their home after x years. which will be the value of the lee family's home in 5 years?
Answers: 1
question
Mathematics, 21.06.2019 16:20
Browning labs is testing a new growth inhibitor for a certain type of bacteria. the bacteria naturally grows exponentially each hour at a rate of 6.2%. the researchers know that the inhibitor will make the growth rate of the bacteria less than or equal to its natural growth rate. the sample currently contains 100 bacteria.the container holding the sample can hold only 300 bacteria, after which the sample will no longer grow. however, the researchers are increasing the size of the container at a constant rate allowing the container to hold 100 more bacteria each hour. they would like to determine the possible number of bacteria in the container over time.create a system of inequalities to model the situation above, and use it to determine how many of the solutions are viable.
Answers: 1
question
Mathematics, 21.06.2019 17:20
Two language majors, anna and megan, took exams in two languages. anna scored 85 on both exams. megan scored 74 on the first exam and 85 on the second exam. overall, student scores on the first exam had a mean of 82 and a standard deviation of 4, and the second exam scores had a mean of 71 and a standard deviation of 13. a) to qualify for language honors, a major must maintain at least an 85 average across all language courses taken. so far, which of anna and megan qualify? b) which student's overall performance was better?
Answers: 2
question
Mathematics, 21.06.2019 18:50
Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.
Answers: 2
You know the right answer?
Cho had $2.85 in nickels and $3.40 in dimes. Then she gave an equal number of her nickels and dimes...
Questions
question
History, 25.01.2021 09:40
question
Mathematics, 25.01.2021 09:40
question
Biology, 25.01.2021 09:40
question
Mathematics, 25.01.2021 09:40
question
Mathematics, 25.01.2021 09:40
question
Mathematics, 25.01.2021 09:40