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
Ann [662]
3 years ago
11

Solve each system by substitution.

Mathematics
1 answer:
jek_recluse [69]3 years ago
4 0
-8x + 4y = 20
-8x = 20 - 4y

Subtitute -8x with 20-4y
-8x + 7y = 5
(20-4y) + 7y = 5
20 + 3y = 5
3y = 5 - 20
3y = -15
y = -15/3
y = -5

Find x
-8x = 20 - 4y
-8x = 20 - 4(-5)
-8x = 20 + 20
-8x = 40
x = 40/-8
x = -5
You might be interested in
Rich makes $12.50 an hour. If Rich works 56 hours in one week, how much would he earn for the week?
Roman55 [17]
The answer should be $700

Because $12.50 · 56 = $700
7 0
3 years ago
Why can a problem with extra information be difficult to solve?
solong [7]

A problem with extra information will be difficult to solve because you may not be able to tell what information you might need to use for the problem.

5 0
3 years ago
Read 2 more answers
What is the greatest common factor for the list below?<br> 39, 52, 26
Zanzabum

Answer:

13

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Adrian exercised three days during the past week. He exercised 58 minutes and 45 seconds during the
aniked [119]

Answer:

2h 1' 1"

Step-by-step explanation:

1h = 1 hora

1' = 1 minute

1" = 1 secind

The sum of the three days is:

  58'  45"

+ 40'  40"

  20'  36"

= 118'  121"

118' 121" = 118' + 121"

1' = 60"

121" = 120" + 1"  = (120/60) + 1 = 2' + 1"

Then:

118' + 121" = 118' + 2' ´+ 1" = 120' + 1"

1 h = 60'

(120/60) + 1 = 2h + 1'

then:

118' + 121" = 2h + 1' + 1"

= 2h 1' 1"

3 0
1 year ago
99 POINTS
yan [13]

Answer:

the function given f(x)=x^3

for 4 units up, just add 4 as a constant

4 units up means, every old value will now be 4 more than previous value. at x=0, y=0 in the transformed curse it should x=0 and y=4, so just add it.

f(x)=x^3+4

for 6 units left,

each old value of y should now occur 6 units before the old value of x i.e. X=x+6

for example, the point (0,0) should occur at (-6,0) in the transformed graph,

hence, f(x)=(x+6)^3

so the final curve is

f(x)=(x+6)^3+4

3 0
3 years ago
Other questions:
  • When i shift the graph of y=2x+5
    7·1 answer
  • An obtuse angle measures 180 degrees.<br> always<br> sometimes<br> never
    12·2 answers
  • I need help please show work.
    8·1 answer
  • The sum of two numbers is 250 what is the average of the two numbers
    10·1 answer
  • Simplify -5x(x - 3y)
    7·1 answer
  • 0.17 with a line over 17 as a fraction
    9·2 answers
  • Can someone tell me what x equals
    15·1 answer
  • Mike has $60 dollars to spend. He spent $12.50 to buy a new juicer mixer.
    9·1 answer
  • How to make 1/3 and 1/1/2 into a 1
    13·1 answer
  • Simplify the expression 30x^6/3x^-2​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!