MATHEMATICS MIDDLE SCHOOL

The table below shows the distance d(t) in feet that an object travels in t seconds: t (seconds) d(t) (feet) 2 64 4 256 6 576 8 1024 What is the average rate of change of d(t) between 2 seconds and 6 seconds, and what does it represent? 128 ft/s; it represents the average speed of the object between 2 seconds and 6 seconds 80 ft/s; it represents the average speed of the object between 2 seconds and 6 seconds 128 ft/s; it represents the average distance traveled by the object between 2 seconds and 6 seconds 80 ft/s; it represents the average distance traveled by the object between 2 seconds and 6 seconds

Answers

Answer 1
Answer:

Answer:

128 ft/s; it represents the average speed of the object between 2 seconds and 6 seconds

Step-by-step explanation:

The average rate of change is another way to say slope.

slope = (y2-y1)/(x2-x1)

      = (576-64)/(6-2)

      = (512/4)

     =128 ft/s


This represents the change in ft per second, or the  average speed the object is going during the time period.
Answer 2
Answer:

Answer:

it's A

Step-by-step explanation:

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Shen’s mother gave him $10 to go buy groceries. He picked up a gallon of milk for $3.49, three pounds of oranges that cost $1.14 per pound, and a box of cereal for $3.46. Shen used front-end estimation to determine whether he had enough money for the groceries. How much did he estimate the total cost would be?

Answers

Gallon of milk: $3.49
3lbs oranges: $1.14(3) = $3.42
Box of cereal: $3.46

Front end estimation is taking the number in front and the rest of the numbers coming after it will be zeroes.

Using front end estimation:
$3.49 => $3.00
$3.42 => $3.00
$3.46 => $3.00

Add all these up; Shen estimated the total cost of the groceries would be $9.00.

Answer:

B

Step-by-step explanation:

One number is five more than another, and their sum is three less than three times the smaller. Find the numbers.If x represents the smaller number, which equation could be used to solve for X?
x2 + 5 = 3x - 3
2x+ 5 = 3x - 3
2x + 5 = 31x - 3)

Answers

2x+5=3x-3

One number so X and five more than another so addition is the sum so equals and 3 less than so subtraction and the smaller number which is X

Answer:

Answer = 2x+5 = 3x-3

Step-by-step explanation:

1) one number is five more than another

wehavetwonumbershere:xandx+5

2) sum is three less than three times the smaller

sum(x+x+5)=threeless(-3)threetimessmaller(3x)

So,combiningallboldnumbers:

2x+5=3x-3

Solve 3x+4+7x+8+7x3+7x3

Answers

It doesn't have real roots, it has imaginary roots, and I can't remember how to find them right now :(
the answer is ERROR i tried it by hand and by calculator and both answers ended up as ERROR 

Four out of 10 people vote them in a town with 200,000 people how many vote

Answers

4/10 * 200000 =80,000

Answer:

80,000 People Voted

Step-by-step explanation:

4/10 is equal to 40 Percent, this means that %40 of the sample group vote,d with this information you can assume that %40 of the 200,000 people voted as well.


40 Percent x 200,000 is 80000, this allows you to conclude that 80,000 people voted.

What is {30-5][+][-7]

Answers

 [30-5]+[-7]
30−5−7
=25−7
=18

a sales person working for a heating and air-conditioning company earns an annual base salary of$30,000 plus $500 on every system

Answers

Answer:

f(x)=30000+500x

Step-by-step explanation:

x=number of additional systems.
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