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3 years ago

I need help with this

Mathematics

1 answer:

asambeis [7]3 years ago

6 0

Answer:

Step-by-step explanation:

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How many solutions will each system of linear equations have? Match the systems with the correct number of

JulsSmile [24]

Answer:

Step-by-step explanation:

Given that,

y = x + 6 equation 1

3x - 3y = -18. Equation 2

Substitute equation 1 into equation 2

3x-3(x+6) = -18

3x - 3x - 18 = -18

-18 = -18

Therefore, it has no solution. Check attachment for echelon matrix solution

B. y = -2x + 5 equation 1

2x + y = -7. Equation 2

Substitute equation 1 into 2

2x -2x + 5 = -7

5 = -7

Since the equation is not balance, then, it has infinite numbers of solution.

C. y = -4x + 11. Equation 1

6x + y = 11. Equation 2

Substitute equation 1 into 2

6x - 4x + 11 = 11

2x = 11 - 11

2x = 0

x = 0

Also, y = -4x + 11

y = 0 + 11 = 11

Then, this has a unique solution I.e. one solution.

5 0

3 years ago

To compute a student's Grade Point Average (GPA) for a term, the student's grades for each course are weighted by the number of

Liula [17]

Okay, here we have this:

Considering the provided information and grades, we are going to calculate the requested GPA, so we obtain the following:

Then we will substitute in the following formula:

$GPA=\frac{Grades\ast Credits}{Total\text{ credits}}$

Then:

$\begin{gathered} GPA=\frac{3.8\cdot5+1.9\cdot2+3.0\cdot5+2.8\cdot4}{16} \\ GPA=\frac{19+3.8+15+11.2}{16} \\ GPA=\frac{49}{16} \\ GPA=3.06 \end{gathered}$

Finally we obtain that the student's GPA for that term is approximately 3.06.

7 0

2 years ago

MULTIPLYING COMPLEX NUMBERS

Elenna [48]

Answer:

(3 - 2i)(4 + 1)

=3(4 + 1 ) +(-2i)(4 + 1)

=3(4 + 1 ) -2i(4 + 1)

=12 + 3 -8i - 2i

= 15 - 10i

5 0

3 years ago

I NEED HELP!!!!! PLEASE

lys-0071 [83]

Answer:

I don't know

Step-by-step explanation:

your image is blocked on my computer. sorry

7 0

3 years ago

Let’s figure out one more adjustment for the butterscotch chip cookies. The butterscotch chip cookie recipe calls for 12 ounces

Anni [7]

I believe it would 18 ounces of chips for 3 cups of flour. If you take half of 12 ounces then you get 6 ounces per cup of flour. Adding 6 ounces to the 12 would get us the total of the 18 ounces.

8 0

3 years ago