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mart [117]
3 years ago
8

Which expression is equivalent to 7x + 4x2 – 5x?

Mathematics
2 answers:
rjkz [21]3 years ago
6 0

Answer:

2x+8

Step-by-step explanation:

Reptile [31]3 years ago
4 0

Answer:

4x^{2} +2x

Step-by-step explanation:

I'm not sure what you want, because it says "which expression", but you didn't provide any answer choices.

So all you have to do for this is combine like terms, and the only ones were 7x and -5x, which equals 2x.

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The final exam of a particular class makes up 40% of the final grade, and Moe is failing the class with an average (arithmetic m
amm1812

Answer:

%82.5

Step-by-step explanation:

  1. The final exam of a particular class makes up 40% of the final grade
  2. Moe is failing the class with an average (arithmetic mean) of 45% just before taking the final exam.

From point 1 we know that Moe´s grade just before taking the final exam represents 60% of the final grade. Then, using the information in the point 2 we can compute Moe´s final grade as follows:

FG=0.40*FE+0.60*0.45,

where FG is Moe´s Final Grade and FE is Moe´s final exam grade. Then,

\frac{ FG-0.60*0.45}{0.40}=FE.

So, in order to receive the passing grade average of 60% for the class Moe needs to obtain in his exam:

FE=\frac{ 0.60-0.60*0.45}{0.40}=0.825

That is, he need al least %82.5 to obtain a passing grade.

6 0
3 years ago
Find m < RQP
Helga [31]

Answer:

80°

78% positive

6 0
3 years ago
What is the answer ????
zlopas [31]
I think its c hope this helps sorry if it dont
7 0
3 years ago
What is the reason for each step in the solution of the equation?
MrRa [10]
<span>3(x+2)= 4x+1 |Given
3x+6= 4x+1   |Distributive
−x+6= 1         |SPOE (Subtraction Property of Equality)
−x= −5           |SPOE
x=5                |MPOE (Multiplication Property of Equality)</span>
3 0
3 years ago
A recipe requires 3 cups of flour to make 27 dinner rolls. How much flour is needed to make 9 rolls.
amid [387]
9 rolls* (3 cups of flour/ 27 dinner rolls)= 1 cup of flour.

1 cup of flour is needed to make 9 rolls~
5 0
3 years ago
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