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Strike441 [17]
3 years ago
9

Two lines, C and D, are represented by the following equations: Line C: y = x + 5 Line D: y = −2x − 1 Which of the following opt

ions shows the solution to the system of equations and explains why? (4 points) Group of answer choices (−2, 3), because one of the lines passes through this point (−2, 3), because the point does not lie on any axis (−2, 3), because both lines pass through this point (−2, 3), because the point lies between the two axes
Mathematics
1 answer:
klio [65]3 years ago
5 0

Answer:

(−2, 3), because both lines pass through this point

Step-by-step explanation:

You might be interested in
Solve by using elimtation
Wewaii [24]

Answer:

1. x = 5, y = 13/2

2. x = 15 , y = 24

Step-by-step explanation:

Solve the following system:

{8 y + 6 x = 82 | (equation 1)

{6 y + 9 x = 84 | (equation 2)

Swap equation 1 with equation 2:

{9 x + 6 y = 84 | (equation 1)

{6 x + 8 y = 82 | (equation 2)

Subtract 2/3 × (equation 1) from equation 2:

{9 x + 6 y = 84 | (equation 1)

{0 x + 4 y = 26 | (equation 2)

Divide equation 1 by 3:

{3 x + 2 y = 28 | (equation 1)

{0 x + 4 y = 26 | (equation 2)

Divide equation 2 by 2:

{3 x + 2 y = 28 | (equation 1)

{0 x + 2 y = 13 | (equation 2)

Divide equation 2 by 2:

{3 x + 2 y = 28 | (equation 1)

{0 x + y = 13/2 | (equation 2)

Subtract 2 × (equation 2) from equation 1:

{3 x + 0 y = 15 | (equation 1)

{0 x + y = 13/2 | (equation 2)

Divide equation 1 by 3:

{x + 0 y = 5 | (equation 1)

{0 x + y = 13/2 | (equation 2)

Collect results:

Answer: {x = 5, y = 13/2

_____________________________________

Solve the following system:

{8 y + 3 x = 237 | (equation 1)

{3 y + 5 x = 147 | (equation 2)

Swap equation 1 with equation 2:

{5 x + 3 y = 147 | (equation 1)

{3 x + 8 y = 237 | (equation 2)

Subtract 3/5 × (equation 1) from equation 2:

{5 x + 3 y = 147 | (equation 1)

{0 x + (31 y)/5 = 744/5 | (equation 2)

Multiply equation 2 by 5/31:

{5 x + 3 y = 147 | (equation 1)

{0 x + y = 24 | (equation 2)

Subtract 3 × (equation 2) from equation 1:

{5 x + 0 y = 75 | (equation 1)

{0 x + y = 24 | (equation 2)

Divide equation 1 by 5:

{x + 0 y = 15 | (equation 1)

{0 x + y = 24 | (equation 2)

Collect results:

Answer: {x = 15 , y = 24

3 0
2 years ago
Calvin is 3 years younger than Robert. Which expression below represents how old Calvin is if Robert is y years old? A. y – 3 B.
Dmitry [639]

Answer:

A Y-3

Step-by-step explanation:

We know Robert is Y years old and Calvin is 3 years younger.  Y-3.  For example, Robert is 20, then Calvin would have to be 17.  Y=20.  20-3 = 17

6 0
3 years ago
The first quartile can best be described as ______________________.
Zolol [24]

Answer:

A. the median of the lower half of a data set ordered from least to greatest

Step-by-step explanation:

The first quartile can best described as  the median of the lower half of a data set ordered from least to greatest.

Let us explain this with an example, say you're given a set of numbers: {1, 2, 5, 8, 9, 12, 15, 16, 20, 23, 25, 28, 32, 36, 42}. The median for the set is 16, the first quartile is going to be the median of the first half which is 8.

6 0
3 years ago
Valerie predicts she will be able to hold her breath for 31 second while underwater. If she actually held her breath for 34 seco
Pani-rosa [81]
(predicted value - exact value)/exact value * 100
(31 - 34)/34 * 100 = 8.8%

6 0
3 years ago
Read 2 more answers
I need to find X but I don't know how to do it
klio [65]
I think i am doing this right i am not sure. First you need to add up all the sides (100+38+22+15) it would equal 175 then you need to subtract it from 360 and get the missing value (x) then the answer would be 185
3 0
3 years ago
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