1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mixer [17]
2 years ago
9

PLS HELP QUICK!!!

Mathematics
2 answers:
Trava [24]2 years ago
8 0

Answer:

The answer is (5,4)

Step-by-step explanation:

AleksandrR [38]2 years ago
3 0
<h3>Answer:  Choice B.   (5, 4)</h3>

===========================================================

Explanation:

Note the matching 4y terms in each equation. The top 4y adds with the -4y down below to get 4y+(-4y) = 0y = 0. This tells us that the y terms go away entirely.

The x terms add to 3x+2x = 5x

The constants on the right hand sides add to 31+(-6) = 25

After adding the equations straight down, we end up with this new equation of 5x = 25

Dividing both sides by 5 leads to x = 5

The answer so far is between B and D.

----------------------------

Let's use this x value to find y

Plugging x = 5 into the first equation leads to...

3x+4y = 31

3(5) + 4y = 31

15 + 4y = 31

4y = 31-15

4y = 16

y = 16/4

y = 4

Or you could use the second equation

2x - 4y = -6

2(5) - 4y = -6

10 - 4y = -6

-4y = -6-10

-4y = -16

y = -16/(-4)

y = 4

Either way, we get the same y value when x = 5.

So x = 5 and y = 4 pair up together.

Overall, the solution is (x,y) = (5, 4)

You might be interested in
Suppose that salaries for recent graduates of one university have a mean of $25,700 with a standard deviation of $1350. Using Ch
sergeinik [125]

Answer:

75% of the data will reside in the range 23000 to 28400.

Step-by-step explanation :

To find the range of values :

We need to find the values that deviate from the mean. Since we want at least 75% of the data to reside between the range therefore we have,

1 - \frac{1}{k^2} =\frac{75}{100}

Solving this, we would get k = 2 which shows the value one needs to find lies outside the range.

Range is given by : mean +/- (z score) × (value of a standard deviation)  

⇒ Range : 25700 +/- 2 × 1350

⇒ Range : (25700 - 2700) to (25700 + 2700)

Hence, 75% of the data will reside in the range 23000 to 28400.

3 0
3 years ago
What transformation maps the preimage (red) onto the image (blue)?
Dominik [7]

Answer:

Rotate counter clockwise about the center point 180 degrees

Step-by-step explanation:

You can use transformations to preserve shape and size but move a shape or change its position. Transformations include:

  • reflection - a flip across an axis
  • rotation - a turn around a point
  • translation - a slide a specific distance and direction

To map the red into the blue, you can rotate it counter clockwise about the center point which the red and blue shapes share 180 degrees. It will land exactly on the red.

8 0
3 years ago
Read 2 more answers
F(x) = x2 - 5
marysya [2.9K]

Answer:

[-1, 3, 9]

Step-by-step explanation:

when x = 2: 4-5 = -1

when x = 4: 8-5 = 3

when x = 7: 14-5 = 9

5 0
3 years ago
Read 2 more answers
The total cost in dollars to buy uniforms for the players on a volleyball team can be found using the function c= 34.95u +6.25,
Radda [10]
The domain will be the integer numbers between 8 and 12 using the limits in other words 8 ≤ u ≤ 12

this is considering every player will bought only one uniform for the season
8 0
3 years ago
Read 2 more answers
Alexis drove 1200 miles in 30 h. What was her rate of travel in miles per hour
kari74 [83]

The answer is 40 miles per hour. If you divide 1200/30 you would get 40. Hope this helps!

7 0
3 years ago
Other questions:
  • 1. The edge lengths of a right rectangular prism are
    10·1 answer
  • How do you write seven hundred thirty one in standard form
    7·2 answers
  • After paying $5.12 for a salad, Norachai has $27.10. How much money did he have
    9·2 answers
  • Help with my geometry hw please :/
    12·1 answer
  • Please help with 7 and 8
    14·2 answers
  • What is the factors for x squared plus 5x - 6
    13·1 answer
  • What is the 2nd step when simplifying this expression
    15·2 answers
  • For the following line, one endpoint and midpoint is given. Find the
    15·1 answer
  • Find the slope of the line that contains the following ordered pairs (4,2) (7,6.5)
    10·1 answer
  • Find the area of the parallelogram with a base of 12 units and height of 8 units. Use your rectangle from the previous question
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!