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
Is -3.45 closer to -3 or -4 on a number line please i really need help
oksano4ka [1.4K]

Answer:

<u>-3.45</u> is closer to -3

Step-by-step explanation:

because, since it's negative the closer the negative number is closer to 0 its number is lower (-) like -4 is farther away from the 0 than -3.

5 0
3 years ago
Write an equation in point-slope form of the line that passes through the given point and has the given slope. (3, –8); m = –5
Paraphin [41]

Answer:

y+8=-5(x-3)

Step-by-step explanation:

The formula for point-slope form is y-y1=m(x-x1)

The points for (x1, y1) are (3, -8), meaning that 3 is x1 and -8 is y1.

So, start by writing your equation like this: y--8=m(x-3)

For the equation y--8=m(x-3), the y--8 will change to a + sign because two negatives make a positive, right? So, the equation should now look like this: y+8=m(x-3).

We know that the slope (m) is -5. Plug that into the equation to get this: y+8=-5(x-3)

And there you have it!! The equation is now in point-slope form!!

y+8=-5(x-3) is the final answer!!

Hope that helps you!! Please give me brainliest!!

7 0
3 years ago
PLEASE HELP ASAP!!!!! i’ll mark brainlest
hoa [83]

Answer:

It would be hundreds

Step-by-step explanation:

I hope it is right :I

4 0
3 years ago
Solve for c of the right triangle
Ede4ka [16]
In order to solve this triangle we must use cosine law:
c^{2} = a^{2} + b^{2} - 2ab*cosC

Now let's plug in the values we are given:
c^{2} = 5^{2} + 8^{2} - 2(5)(8) * cos 67
c^{2} = 25 + 64 - 80*cos67
c =  \sqrt{80-cos67}

5 0
4 years ago
Read 2 more answers
Angela has a credit score of 800 describe reasons why her score might be so high
Lapatulllka [165]
She does not use her creator card a lot or she does not purchase many expensive items
6 0
3 years ago
Other questions:
  • Can someone pls help me on this ASAP
    5·1 answer
  • URGENT NEEDS TO ME SUBMITTED BY MIDNIGHT!! The ratio of girls to boys in Mr. Hansen’s class is 4:5. The ratio of girls to boys i
    11·1 answer
  • What is the difference between composition and decomposition? Can you use them to find the area of a polygon?
    12·1 answer
  • Part A: For each problem, write an expression using parenthesis, and then solve.
    12·1 answer
  • Given: measure of arc PIV = 7/2 times measure of arc PKV<br><br> PKV<br><br> Find: m∠VPJ
    13·1 answer
  • Looking for code for the great escape
    14·1 answer
  • HEEEEELLLPPP PLEEEAASSEEE
    9·1 answer
  • Find the difference: -2/5-(-4/5)
    6·1 answer
  • Billy owns a painting that is valued at $39,113. If the value of the artwork increases by 10%
    14·1 answer
  • Explain how solving 4x &lt; -16 is different from solving -4x&lt; 16.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!