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
Alex_Xolod [135]
3 years ago
11

Solve by substitution X^2= 2y + 10 3x-y = 9

Mathematics
2 answers:
Viefleur [7K]3 years ago
8 0

Answer:

x=-4\\ x=-2\\ y=-21\\ y=-15

Step-by-step explanation:

x^{2} =2y+10

y=-9+3x

x^{2} =2(-9+3x)+10

x^{2} =-18+6x+10

x^{2} =6x-8

x^{2} -6x+8

x=-4, -2

y=-9+3(-4)

y=-9-12

y=-21

y=-9+3(-2)

y=-9-6

y=-15

love history [14]3 years ago
4 0

Answer:

(4,3) (2,−3)

Step-by-step explanation:

x^2 =2(−9+3x)+10

2(−9+3x)+10

x2 = −18+6x+10

x2=6x−8

x2−6x+8=0

We now have to find integers that find product is 8 and whose sum is −6

= -4 -2 we find this is set to 4 2 as x−4=0

Add 4 to both sides of the equation. x=4

Set the next factor equal to 0

x−2=0 Add 2 to both sides of the equation.x=2

Confirms and proves x = 4,  x = 2

We solve for y

2y+10=(4)2

2y+10=16

2y=16−10

2y = 6

y = 3

We rewrite and solve for y again

(2)^2=2y+10

2y+10=(2)*2

2y+10=4  

2y = 4(-10)

2y = -6

y= -3

You might be interested in
How to graph -x+y=-6 , 3x+5y=2
Grace [21]
Solve for y for both
6 0
3 years ago
Solve for r: C = 2 pi r. (1
katen-ka-za [31]

Answer:

C/2pi = r

Step-by-step explanation:

C = 2 pi r

divide with 2 pi on both sides to solve for r

C/2pi = r

5 0
3 years ago
The price of milk increased from $2 to $2.50. What is the percent of change for the price of milk?
Alina [70]

25.00%

Or

25c

Have a Merry Christmas!

5 0
3 years ago
What is x in the equation 4x - 12 equals -7x - 111
lukranit [14]
4x - 12 = -7x - 111
11x = -99
x = -9
5 0
3 years ago
Read 2 more answers
253,761 In Expanded Form .
Irina18 [472]
2 hundred thousands
5 ten thousands
3 thousands
7 hundreds
6 tens
1 ones
6 0
3 years ago
Other questions:
  • Alan deposits $4000 into an account that pays simple interest at a rate of 5% per year. How much interest will he be paid in the
    5·1 answer
  • what matrix is a result of m x h enter your answer by filling in the boxes enter any fractions as simplified fractions​
    10·1 answer
  • Identify the square root of 3 as either rational or irrational, and approximate to the tenths place.
    7·1 answer
  • Two-thirds of a number is equal to negative one-fifth. what is the number?​
    5·2 answers
  • State whether the two triangles below are congruent?<br> B<br> А<br> С<br> Q<br> S<br> R
    13·2 answers
  • Question in the image
    8·1 answer
  • FIND THE GCF <br> 9k + 12m = ____ ( ____ + _____)
    10·2 answers
  • Also, explain why and how you got it right and the one that's red is wrong
    13·1 answer
  • Evaluate: (9 - 3)2 + 5 = 1 3​
    9·1 answer
  • A fundraiser is being held to raise money for a new school playground. Of every $20 raised, $16 will be spent on playground equi
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!