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kirill115 [55]
3 years ago
10

Which system of equations is equivalent to the system of equations shown? 2x + 5y = -2 4x + 7y = 8 A) 6x - 12y = 6 and 4x - 10y

= 4 B) 6x - 12y = 6 and 4x + 10y = -4 C) 6x + 12y = 6 and 4x - 10y = 4 D) 6x + 12y = 6 and 4x + 10y = -4
Mathematics
1 answer:
ankoles [38]3 years ago
7 0
The correct anwerr is d
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Please help me with this question???
Serjik [45]
The correct answer is the third option.
5 0
3 years ago
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
Sovle the question l-9l + l-1l ​
Arada [10]

Answer:

10

Step-by-step explanation:

| | means absolute value. Absolute value is always positive, so your equation would be evaluated to 9 + 1 = 10

7 0
3 years ago
Read 2 more answers
4. Which of the following represents the solution set to the inequality
amid [387]
Okay thanks so much for
7 0
2 years ago
Plz help, The graph of y = f(x) is shown below. What are all of the real solutions of f(x) = 0?
8_murik_8 [283]

Answer:

The real solutions of f(x)=0 are: 0, 2, 5, 6

Step-by-step explanation:

We are given:

The graph of y = f(x)

We need to find all of the real solutions of f(x) = 0?

By looking at the graph we need to find the values of y when x =0

Looking at the graph, when x=0 we get

0, 2,5 and 6

So, the real solutions of f(x)=0 are: 0, 2, 5, 6

I am attaching the figure, that determines the answers.

8 0
3 years ago
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