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MATH SOLVE
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Amelia, Luis, Shauna, and Clarence used different approaches to solve the inequality 7.2b + 6.5 > 4.8b – 8.1. Amelia started by subtracting 7.2b from both sides to get 6.5 > –2.4b – 8.1. Luis started by subtracting 4.8b from both sides to get 2.4b + 6.5 < – 8.1. Shauna started by subtracting 6.5 from both sides to get 7.2b > 4.8b – 14.6. Clarence started by adding 8.1 to both sides to get 7.2b + 14.6 > 4.8b. Which student’s first step was incorrect, and why? Amelia’s, because the variable term must be isolated on the left side Luis’s, because he flipped the inequality sign when he subtracted Shauna’s, because she did not apply the subtraction property of equality properly Clarence’s, because the terms he added together were not like terms
General
2 months ago
Which of the following represents the sum of the series?6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24 + 26
General
2 months ago
Colinda has just purchased her first home for $125,000. She put down a 20 percent down payment of $25,000 and took out a 5 percent mortgage for the rest. Her mortgage payment is $477 per month. How much of her first monthly mortgage payment is amortization?
General
2 months ago
Jim Tree borrowed $1,000 at 10 percent for one year. He paid a $45 processing fee and $100 in interest. He calculated the APR to the nearest tenth. What was the APR?
General
2 months ago
Which statement is true about the graphs of exponential functions? A. The graphs of exponential functions never exceed the graphs of linear and quadratic functions. B. The graphs of exponential functions always exceed the graphs of linear and quadratic functions. C. The graphs of exponential functions eventually exceed the graphs of linear and quadratic functions. D. The graphs of exponential functions eventually exceed the graphs of linear functions, but not quadratic functions.
General
2 months ago
Jenny has just started working on a 250 piece jigsaw puzzle. She usually takes 3 hours to work a puzzle of that size. Her little brother wants to help. He could put the puzzle together in 6 hours. How much time would the two need to work the puzzle together? (Round your answer to the nearest tenth.)
General
2 months ago
Holly throws a 12-sided number solid with faces labeled 1 through 12. What is the probability that Holly will roll a number greater than 12?
General
2 months ago
Landon is standing in a hole that is 6.5 m deep. He throws a rock, and it goes up into the air, out of the hole, and then lands on the ground above. The path of the rock can be modeled by the equation y equals negative 0.05x^2+4.5x-6.5, where x is the horizontal distance of the rock, in meters, from Landon and y is the height, in meters, of the rock above the ground. How far horizontally from Landon will the rock land? Round your answer to the nearest hundredth of a meter.
General
2 months ago
Vladimir says that the equation of the line that passes through points (-5,-3) and (10,9) is y=4/5x+1. Robyn says that the line passes through the points (-10,-7) and (-15,-11). Who is correct? a)only Vladimir b)only Robyn c)both Vladimir and Robyn d)neither Vladimir nor Robyn
General
2 months ago
Caleb made the table below to show the number of hours he works and the amounts he earns over a four-week period. Caleb’s Earnings Hours 12 15 18 21 Earnings (in dollars) 140 170 200 230 Which describes whether the relationship between the earnings and the number of hours represents a direct variation?
General
2 months ago
Expand the logarithmic expression: log3 d/12The answer should not be a number!(it should be a different expression).
General
2 months ago
Steve ordered Plastic case of storing his baseball cards. Each case has A length Of 12 Centimeters, A width Of 6.5 cm, and a height of 1.25 centimeters What is the volume , In cubic centimeters, of one baseball Cards case
General
2 months ago
how to solve this cause I was gone for 1/2 of my class and missed stuff.
General
2 months ago
Write the number 40/100 as tenths in fraction form and decimal form.
General
2 months ago
A toy rocket launched straight up from the ground with an initial velocity of 80 ft/s returns to the ground after 5 s. The height of the rocket t seconds after launch is modeled by the function f(t)=−16t^2+80t . What is the maximum height of the rocket, in feet? Enter your answer in the box.
General
2 months ago
Suppose two drugs are routinely used for the treatment of thyroid dysfunction. Drug X is known to cure the disorder 75% of the time and costs $88. Drug Y is known to cure the disorder 60% of the time and costs $75. The two drugs work independent of each other. The two treatment plans are as follows:Plan A: Treatment with Drug X—if not effective, treatment with Drug YPlan B: Treatment with Drug Y—if not effective, treatment with Drug XFor what part of the population is Plan B NOT effective?40%30%15%10%
General
2 months ago
If you know the number of yards for a measurement, you can change that measure to meters by multiplying the number of yards by 0.9144 **Please Answer all 3**1) Write a function rule that relates meters to yards.2) How many meters are equivalent to 7,200 yards? Round the answer to the nearest hundredth, if necessary.3) How many yards are equivalent to 2,500 meters? Round to the answer to the nearest hundredth, if necessary.
General
2 months ago
which of the following expressions are equivalent to 2/x^8-y^8? choose all that applyA.2/(x^4-y^4)*1/(x^4+y^4)B.2/(x^4)^2-(y^4)^2C.2/(x4-y^4)*1/(x^4-y^4)D.1/(x^4-y^4)*1/(x^4+y^4)
General
2 months ago
Cory is lining the top of a table with clear plastic. The table has a circumference of 4.71 feet. How many square feet of plastic will he need to cover the tabletop? Use 3.14 for π and round to the nearest tenth.
General
2 months ago
Carrie is finding the set of even numbers within the set of prime numbers. She starts by considering only positive numbers.Of the sets described, which is the universal set?all real numberspositive numbersprime numberseven numbers
General
2 months ago
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