Mathematics
23.12.2020 13:38
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Two more than four times the sum of yesterday s high temperatures in degrees fahrenheit
Two more than four times the sum of yesterday's high temperatures in degrees fahrenheit and 7 is equal to the current temperature in degrees fahrenheit. a. write an expression for the current temperature using t as yesterday's high temperature in your expression. b. simplify the expression c. if yesterday's high temperature was 3 degrees fahrenheit, what is the current temperature?
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lilyrockstarmag
4,6(42 marks)
4(t + 7) + 2 <== current temp expression
4t + 28 + 2 =
4t + 30 <=== simplified
if yesterdays high temp is 3...
4t + 30 =
4(3) + 30 =
12 + 30 =
42 Fahrenheit <=== current temp
4t + 28 + 2 =
4t + 30 <=== simplified
if yesterdays high temp is 3...
4t + 30 =
4(3) + 30 =
12 + 30 =
42 Fahrenheit <=== current temp
deasiamonay14
4,5(74 marks)
part a:
9x2 + 24x + 16 =
(3x + 4)^2
each side measures (3x + 4) units.
part b:
16x^2 - 25y^2 =
= (4x + 5y)(4x - 5y)
the dimensions of the rectangle are (4x + 5y) units and (4x - 5y) units.
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