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
liubo4ka [24]
3 years ago
12

For the following system, use the second equation to make a substitution for y in the first equation. 3x + y = 1 y + 4 = 5x What

is the resulting equation? 1. 3x + 5x - 4 = 1 2. 3x + 4 - 5x = 1 3. 3x + 5x + 4 = 1
Mathematics
1 answer:
Debora [2.8K]3 years ago
7 0

Answer:

The answer is A.

Step-by-step explanation:

So we have the two equations:

3x+y=1\\y+4=5x

To make a substitution of the second equation into the first equation, we need to isolate the <em>y </em>variable in the second equation. Thus:

y+4=5x\\y=5x-4

Now, we can substitute this into the first equation. Therefore:

3x+y=1\\3x+(5x-4)=1\\3x+5x-4=1

You might be interested in
A watch cost $76.00. If the sales tax rate is 7% what is the amount of sales tax? What is the total cost?
sweet [91]

Answer:

Multiply the cost of an item or service by the sales tax in order to find out the total cost. The equation looks like this: Item or service cost x sales tax (in decimal form) = total sales tax. Add the total sales tax to the Item or service cost to get your total cost.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Coordinate Plane Dilation
andrew11 [14]

Answer:

B. (36, -12)

Step-by-step explanation:

4 0
3 years ago
Which expression is equivalent to 1/2- (-8)?
postnew [5]

Answer:

1/2 + 8 is equivalent to 1/2 - (-8)

0.5 - (-8) is ALSO equivalent to 1/2 - (-8)

0.5 + 8 is another equation that is equivalent to 1/2 - (-8)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A motorboat travels Downstream on a river for 5 hours. The speed of the current is 2 km/h. The river flows into a still Lake and
lara [203]

Answer:

I think it is 10 km/hr

Step-by-step explanation:

5 hrs = 40 more with 2 km/hr current

2 hrs= less 40 no current

40-2x5=30

30 without current for three hours

30/3=10 km/hr no current

CHECK

10x2=20

10x5=50+2x5=60

8 0
3 years ago
Find the missing angle<br> Please help need asap
Lerok [7]

Answer:

I dont know the answer but I can help

Step-by-step explanation:

every shape is 360 degrees so the ones with squares in the corner is 90 degrees add all the angles you know and subtract that from 360 then ÷ by the a glass that are missing hope that helps

3 0
3 years ago
Other questions:
  • Can you help me the question please is so hard I was struggling for three hours
    10·2 answers
  • What is the variance of the value 7, 15, 11, 1, 11
    14·1 answer
  • Is −11 a solution of 2x + 3 = −19?
    10·2 answers
  • Is -3/5 greater than, less than, or equal to -0.6
    12·2 answers
  • Which value of x satisfies the equation 5(2x-9)+3=-7
    15·1 answer
  • 4y + 16 &gt; –8 solve the Inequalities help plz
    8·2 answers
  • Steven purchases a car for $25,000. He makes a down payment of 15%. What amount does he finance?
    12·1 answer
  • #2 with an explanation please
    12·2 answers
  • Solve for -5x &lt; 2 step by step
    6·1 answer
  • Find the value of x.​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!