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3 years ago

What is the answer? -4 + x = -26

Mathematics

2 answers:

algol133 years ago

3 0

Answer:

x = -30

Step-by-step explanation:

Pavel [41]3 years ago

3 0

Answer: x = -22

Step-by-step explanation:

1) -4 + x = -26

2) Carry the -4 to the other side. It will turn the -4 into a +4.

You will end up with x = -26 + 4.

Remember that variables go to the left side of the "=" and numbers stay to the right.

3) x = -22

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3 years ago

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Illusion [34]

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2 years ago

Read 2 more answers

22. Use your model to determine when the volume of oil will get down to 500 gallons.

Helen [10]

Answer:

21. y = 75000·0.935^t

22. after 74.6 days

23. y = 27.8112·1.18832^t

24. 18.8% per month

25. 1748

Step-by-step explanation:

22. It is convenient to use the graphing calculator to solve this problem. The number of days is where the exponential curve has the value 500. It is about 74.55 days. (see the first attachment)

23. y = 27.8112·1.18832^t (see the second attachment)

24. The rate of change is the difference between the base of the exponential and 1, often expressed as a percentage. The time period is the units of t.

(1.18832 -1) × 100% ≈ 18.8% . . . . per month

25. Evaluating the function for t=24 gives y ≈ 1748.30425259 ≈ 1748.

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<em>Comment on graphing calculator</em>

A graphing calculator can make very short work of problems like these. It is worthwhile to get to know how to use one well.

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3 years ago