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
BigorU [14]
3 years ago
13

All questions are about this system of equations:

Mathematics
1 answer:
sertanlavr [38]3 years ago
6 0
If we are eliminating x, we would multiply the 2nd equation by -5

5x + 18y = 23
x + 3y = 2....multiply by -5
-----------------
5x + 18y = 23
-5x - 15y = - 10 (result of multiplying by -5)
----------------add
0 + 3y = 13.....bye-bye x :)

You might be interested in
Find the coordinates of the midpoint M of the segment with the given endpoints. Then find the distance between the two points. R
Mrac [35]

Answer:

Midpoint (-2,4)

distance nearest tenth = 8.9

The approximate distance = 9

Step-by-step explanation:

Formulas

PQ midpoint = (x2 + x1)/2, (y2 + y1)/2

distance d = sqrt( (x2 - x1)^2 + (y2 - y1)^2 )

Givens

x2 = -4

x1 = 0

y2 = 1

y1 = 7

Solution

M(PQ) = (-4+0)/2, (1 + 7)/2

M(PQ) = -2, 4

The midpoint is -2,4

The distance = sqrt( (4 - 0)^2 + (1 + 7)^2 )

The distance = sqrt(16 + 64)

The distance = sqrt(80)

The distance = 4√5           exactly

The distance = 8.94    

The distance = 8.9            To the nearest tenth

Question 2

The distance is rounded to the nearest whole number which is 9.

6 0
3 years ago
Please answer correctly !!!!!!! Will mark brainliest !!!!!!!!!!!!!!
Mamont248 [21]

Answer:

y= -x^2+5

Step-by-step explanation:

It normally expontionally goes up, so across the x axis is down so it is negative, and is is all scales up, so the start is 5 up from the origin on the y axis, so it would be y=-x+5

Hope this helped!

7 0
2 years ago
I need help with this please. It’s probability.
Vinvika [58]

Answer:

2/13

Step-by-step explanation:

In a deck of 52 cards, there are 2 sets of red cards. Diamonds and Hearts. In each set of red cards, there are 4 fives. If there are 2 sets, that means that there are 8 red fives in the deck of 52 cards. This means that the probability is 8/52 which is simplified into 2/13.

8 0
3 years ago
Help me guyssssss skeks
monitta

Answer:

19

Step-by-step explanation:

|-8 -11|=19

7 0
2 years ago
Read 2 more answers
How to write 281,480,100 in word form
jeyben [28]
Two hundred and eighty one million,four hundred and eighty thousand and one hundred
3 0
3 years ago
Other questions:
  • During dance practice, Sasha drank 21⁄2 pints of water, and on the way home she drank 1⁄2 cup of water. How much water did she d
    9·1 answer
  • Which best describes the relationship between the lines? 2x – y = −7 2x + 4y = 2
    10·2 answers
  • Rewrite the following equation in the center-radius form of the equation of a circle.
    7·1 answer
  • Rewrite 3/4x+2=9/10 so that it doesn’t have fractions
    13·1 answer
  • What is 16500 rounded to the nearest ten thousand
    14·1 answer
  • Please help!!!!!!!!!!!
    11·1 answer
  • Solve the expression 9.50h+60=460
    12·2 answers
  • Find the missing side of this right
    8·1 answer
  • Please solve 4(3x-2)=52
    10·1 answer
  • Determine the slope of the line that contains the given points <br><br> J(-5, -2), K(5, −4)
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!