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
Contact [7]
3 years ago
9

How to work this problem

Mathematics
2 answers:
In-s [12.5K]3 years ago
5 0
So in order to use the substitution method, you rearrange one to have a variable isolated, so i isolated y. Then you plug in and solve for the other variable, then plug in that to an equation to find the remaining variable.

Mazyrski [523]3 years ago
3 0
7x + 9y = - 27_________eq1
3x - y = 3__________eq2
Multiply eq 2 by 9 and then add the resulting eq with eq1.

eq2 x 9 gives us   27x - 9y = 27___________eq3
 
add eq3 with eq1 we get.
34x = 0.
where x=0/34
x=0.
substitute x into any of the above equations to get y.
substitute x into eq1. we get:
7(0) + 9y =-27
9y = -27
y= -27/9
y = -3.
You might be interested in
AB is the angle bisector of ∠CAD. Solve for x.
Sliva [168]

Answer: x=7

Step-by-step explanation:

Since AB is a bisector, it cuts the angle in half, and since we know that the angle is a right angle, we know it’s 90 degrees, so knowing that you use the equation 7x-4= 45 (since 45 is half of 90), add 4 to both sides so you have 7x=49, the divide 49 by 7 and you get 7, so x= 7

3 0
2 years ago
If a 12 pound turkey cost $24.98 what should 20 pound cost
Viefleur [7K]
Possibly $40.98 hope this helps
6 0
3 years ago
HELP ASAP!!! WILL GIVE BRAINLEST!!!!
allochka39001 [22]

Answer:

This is Conplementary and adjacent

Step-by-step explanation: Complementary means they add up to 90 degrees and they are right next to each other

6 0
2 years ago
Read 2 more answers
What is the graph of 3x + 5y = –15? Image for option 1 Image for option 2 Image for option 3 Image for option 4
saveliy_v [14]
Move x
5y = - 15 - 3x
y = - 3 - 3/5x
y = - 3/5 - 3
-y = 3/5 + 3
6 0
2 years ago
GIVING BRAINIEST!!!!!!!!
Sav [38]

Answer:

look at the horizontal line in the picture. the degree measure of any line is 180° given there's a perpendicular ray through that horizontal line it's therfore split into two sides both with angle measure of 90°.

given f is 71° then g can be found knowing that both g and f must add to 90°. 71+g=90. g=19°

now look at f again. f and d are what's known as vertical angles and that means that they're angle measures are congruent. therfore the measure of d is 71° d=71°

Finally to find e we notice that angle d and e form a straight line which means both angles measures must add to 180°. therefore e can be found by computing d+e=180

aunaitituitmg our information we know 71+e=180 then e must equal 109° e=109°

3 0
3 years ago
Other questions:
  • Why is this 1 and not 0? Steps please? Y^0=1. Why is it equal to 1 and not 0? Please really explain this because I’m still convi
    7·1 answer
  • Rewrite the compound inequality as an absolute value inequality in one variable.
    11·1 answer
  • How do you find the area of a triangle
    14·1 answer
  • Area of shaded region rectangle and semicircle
    14·1 answer
  • Please Help!
    10·1 answer
  • Find the unknown side length, x. Write your answer in simplest radical form.
    13·1 answer
  • What scenario could be modeled by the graph below?
    13·1 answer
  • Fasting for Amazon on the natural ​
    6·1 answer
  • Classify each special right triangle in the length ratio of (Side1 : Side2 : hypotenuse)
    7·1 answer
  • Find the missing probability.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!