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
ryzh [129]
3 years ago
8

Solve the system of equations and choose the correct ordered pair. 3x + 4y = 38 5x - 5y = -30

Mathematics
1 answer:
faust18 [17]3 years ago
3 0
3x + 4y = 38 ( equation 1) ----> ×5 5x - 5y = -30 ( equation 2) ----> ×3 When you multiply eqn 1 by 5 you get, 15x + 20y = 190 And when you multiply eqn 2 by 3, you get, 15x - 15y = -90 Then you solve both equations by subtracting eqn 2 from eqn 1 15x + 20y = 190 15x - 15y = 90 Then 15x - 15x gets cancelled and 20y - (-15y) gives 35y and 190 - (-90) gives 280. So that gives 35y = 280 y = 8 And when you replace y = 8 in any of the two equations, x = 2
You might be interested in
The spinner below shows 10 equally sized slices. Maya spun the dial 20 times and got the following results. a) From Maya's resul
yKpoI14uk [10]
A) 1/2 bc half of the spinner is white 
B) 1/2, 0.5
C) is the last one, the bottom one to be right
3 0
3 years ago
Read 2 more answers
Which is more, 1 quart or 7 cups?<br><br> A. 1 quart<br> B. 7 cups<br> C. neither; they are equal
cricket20 [7]
1 quart is equal to 4 cups so the answer is B.
5 0
3 years ago
Read 2 more answers
140 + (-122) + (-10), I also need it with work.
Aleks04 [339]

Answer:

8

Step-by-step explanation:

140-122=18

18-10=8

6 0
3 years ago
Read 2 more answers
Help please asapppppppp
Schach [20]

Answer:

see below

Step-by-step explanation:

Order of operations is parenthesis, exponents, multiplication, division, addition, subtraction.

since there are no exponents in this problem the next step is -2(2.2)

Simplify the previous step and you get -4.4

final answer is -7.6 - 4.4 = -12

5 0
3 years ago
Find log1/4 rounded to the nearest hundredth.
erastovalidia [21]

Answer:

-log_4

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • Evaluate the Logarithim<br><br> log6 1/36<br><br> base 6<br><br> I need steps please.
    5·2 answers
  • What is the equivalent expression?
    8·1 answer
  • The ticket price for the hockey match was 14.50. The price has increased by 7%. How much is a ticket after the increase
    6·1 answer
  • Need answers ASAP there’s the question and the graph for support<br> .
    9·1 answer
  • Graph the equation. y=2/3×-8​
    11·1 answer
  • Someone please help me with this
    6·2 answers
  • Please help- help me
    13·1 answer
  • Please someone help???ty!!
    12·1 answer
  • What happens if you subtract the two equations and solve for S5? Can you use this information to come up with a way to find any
    9·1 answer
  • A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!