I need help with my math hw

Answers

Answer 1

Answer: 1. C
2. D I’m I’m not completely sure but it’s the only graph that only had one answer per x value

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The Japanese bullet train takes only three hours to travel from Tokyo to Osaka a distance of 321 miles what is the average speed of the train during this trip

Answers

To find the average of the is your would divide the distance by the time 321/3 which is 107mph. Meaning the train travels an average of 107miles each hour

Factor out the coefficient of the variable: 2.4n + 9.6

Answers

To factor out the coefficient of the variable, you must take away from all parts of the expression. Similar to distribution, except the reverse.

2.4n + 9.6

2.4(n + 4)

consider the numbers 4205 176 and 408 what is the difference in the values of the digit 4 in each number

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The 4 in the first one is in the thousands place, the second one doesn't have a 4 and the 4 in the third one is in the hundreds place. Hope this helped.

Write 408,032,009 in expanded form

Answers

Expanded form means breaking the number into addition.

408,032,009 = 400,000,000 + 8,000,000 + 30,000 + 2,000 + 9

The answer is:

400,000,000 + 8,000,000 + 30,000 + 2,000 + 9

(1 pt) Which answer best describes the solution to the equation 3m – 9 = 9 + 3m?

Answers

3m-9=9+3m
add 9 to both sides
3m=18+3m
minus 3m both sides
0=18
false
no solution

the best discription would be an empty solution set

HELP PLEASE Sam and George both worked hard over the summer. Together they earned a total of $525. George earned$75 more than Sam.
a. Write a system of equations for the situation. Use s for the amount Sam earned and g for the
amount George earned.
b. Graph the equations in the system. Be sure to label all axes and show your scale.
c. Use your graph to determine how much each person earned.

Answers

Answer:

Step-by-step explanation:

g = s + 75

g + s = 525

That's just the answer for (a). You'll have to graph it yourself.

Guide to the methodology:

You need to plot 2 points for each equation and draw a line between the points. Where the two lines intersect gives you the values that solve the equations.

To get your co-ords,

Let g = 0

s = -75

Create a graph with g as one axis and s as the other. Plot a point of (0,-75)

Let s = 0

g = 75

Plot another point (0,75)

Draw a line between the two points. This is your line for g = s +75

You then need to plot a line for the second equation.

Let g = 0. S = 525. First co-ordinate is (0,525)

Let s = 0. G = 525. Second co-ordinate is (525,0)

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