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Marianna [84]
4 years ago
10

Question Of The Day: If Margaret took a quiz and got a 72% on it, and then she got a 80 on the second one, what is her average g

rade?
Mathematics
2 answers:
topjm [15]4 years ago
3 0
Well first you add them together so 72+80=152 and then you devide by two which would make the average grade 76. hope this helps:)
Vinil7 [7]4 years ago
3 0
Her Average Is A 76%. You Would Need To Add The 2 Percentages Together & Come Up With 152%. You Would Then Divide That 152% By 2 (Representing The 2 Previous Percentages). You Would Then End Up With 76% As An Average Percentage
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Help please??????????
marishachu [46]
MachineA: y=120x

MachineA could pack in 12 min
y=120(12)
y=1440

MachineB could pack in 12 min
y=150(12)
y=1800

MachineB pack than MachineA
1800-1440
=360 candies
5 0
3 years ago
Which problem could be solved with the expression 32 divided (3+1)
ExtremeBDS [4]

Answer:

Pepepopo check

Step-by-step explanation:

6 0
3 years ago
Which of these strategies would eliminate a variable in the system of equations?
gtnhenbr [62]

Answer:

option A

Step-by-step explanation:

8 0
3 years ago
What is the value of c such that the line y=2x+3 is tangent to the parabola y=cx^2
satela [25.4K]

The value of c such that the line y = 2\cdot x + 3 is tangent to the parabola y = c\cdot x^{2} is -\frac{1}{3}.

If y = 2\cdot x + 3 is a line <em>tangent</em> to the parabola y = c\cdot x^{2}, then we must observe the following condition, that is, the slope of the line is equal to the <em>first</em> derivative of the parabola:

2\cdot c \cdot x = 2 (1)

Then, we have the following system of equations:

y = 2\cdot x + 3 (1)

y = c\cdot x^{2} (2)

c\cdot x = 1 (3)

Whose solution is shown below:

By (3):

c =\frac{1}{x}

(3) in (2):

y = x (4)

(4) in (1):

y = -3

x = -3

c = -\frac{1}{3}

The value of c such that the line y = 2\cdot x + 3 is tangent to the parabola y = c\cdot x^{2} is -\frac{1}{3}.

We kindly invite to check this question on tangent lines: brainly.com/question/13424370

3 0
2 years ago
What is the value of x in the equation 4x + 8y = 40, when y = 0.8?
Alona [7]
4x+8y=40\\\\ \ \ \ \ when\ y=0.8:\\\\4x+8\cdot0.8=40\\4x+6.4=40\ \ \ \ |subtract\ 6.4\\4x=40-6.4\\4x=33.6\ \ \ |:4\\\boxed{x=8.4}
8 0
3 years ago
Read 2 more answers
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