Mathematics, 01.04.2021 23:00 dbag1162
At midnight, the temperature in a city was 5 degrees Celsius. The temperature was dropping at a steady rate of 2 degrees Celsius per hour.
Write an inequality that represents t, the number of hours past midnight, when the temperature was colder than -4 degrees Celsius. Explain or show your reasoning.
2.
Tyler is simplifying the expression 6β2x+5+4x.
Here is his work:
6β2x+5+4x
(6β2)x+(5+4)x
4x+9x
13x
His work is incorrect. Explain the error he made.
3.
Simplify the expression 6β2x+5+4x. Hint: Your final expression shoul donly have two terms.
4.
Factor to write an equivalent expression:
36aβ16
5.
Expand to write an equivalent expression:
β14(β8x+12y)
6.Diego's family car holds 14 gallons of fuel. Each day the car uses 0.6 gallons of fuel. A warning light comes on when the remaining fuel is 1.5 gallons or less.
Starting from a full tank, can Diego's family drive the car for 14 days without the warning light come on?
Please help me thank you
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