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
dimulka [17.4K]
3 years ago
6

Solve using substitution y=1/2x x+4y=18

Mathematics
1 answer:
Aleks [24]3 years ago
7 0

Answer:

The solution set is (6,3)

Step-by-step explanation:

Begin by multiplying equation 1 by 2. You'll see why in a moment

2y = 2*(1/2) x

2y = x

Substitute this value into equation 2.

2y + 4y = 18                  Combine like terms on the left

6y = 18                          Divide both sides by 6

6y/6 = 18/6                    Do the division

y = 3

To solve for x just use the top equation

y = 1/2x

3 = 1/2x                          Multiply by 2

3*2 = x

x = 6


You might be interested in
Help me please answer this question
vichka [17]

Answer:

y = 7x + 12

Step-by-step explanation:

Slope (m) = 7

Line is passing through the point (0, 12)

y-intercept (b) = 12

Equation of line in slope-intercept form is given as:

y = mx + b \\  \\ y = 7x + 12

5 0
3 years ago
I WILL GIVE BRAINLIEST AND POINTS PLEASE I NEED TO PASS !!!!!!
WITCHER [35]
The answer is D, 14...
7 0
3 years ago
In AVWX, XV<br> W X and mW<br> - 27°. Find m_X.
SashulF [63]

Answer:

m<X = 126^{o}

Step-by-step explanation:

From the given isosceles triangle, we have;

<W and <V as the base angles

So that,

m<W = m<V = 27 (base angles of an isosceles triangle are equal)

Thus,

m<X + m<V + m<W = 180 (sum of angles in a triangle)

m<X + 27 + 27 = 180

m<X + 54 = 180

m<X = 180 - 54

       = 126

m<X = 126^{o}

8 0
3 years ago
There are 84 jars of jelly on a shelf at the store. Of these, 21 are grape. What percent of the jars of jelly are grape?​
Vladimir79 [104]

Answer:

25%

Step-by-step explanation:

Start by dividing 84 by 4 and you get 21. Then take 100 and divide that number by 4, and you get 25. There is your answer. The 21 jars of grape jelly are equal to 25% of the number 84. Hope this helps!

5 0
3 years ago
Can you answer this question ?
Elden [556K]

Answer:

k = -14

Step-by-step explanation:

We should cross-multiply

9/(k -  7)  =  6 / k

9*k  = 6 * (k - 7)

9k = 6k  - 42

9k - 6k = -42

3k = -42

k = -14

7 0
3 years ago
Other questions:
  • The perimeter of a triangle is 19z-7. One side is 5z-9 and one side is 8z+3. What is the remaining side ?
    8·1 answer
  • A tank containing 64 gallons lost 6 1/4% of this through leakage how much is remaining is the tank
    13·2 answers
  • A cup of tea with initial temperature of I = 85C^(circ) is left in the room with a constant temperature A = 21^(circ). In one mi
    11·1 answer
  • i have a number line the second line has -27 my 3rd and 4th line don't have any numbers but, my 5th line has 0
    6·1 answer
  • PLEASE HELP DUE TODAY! GIVING BRAINLIEST!!
    15·1 answer
  • PLEASE HELP ME IM GIVING 45 POINTS AND BRAINLEST!!!!! HELP NOW
    12·1 answer
  • On each trial of a digit span memory task, the participant is asked to read aloud a string of random digits. The participant mus
    14·1 answer
  • Please help!!! it’s due at 10:00am
    7·2 answers
  • Compare using &lt;, &gt;, or =. <br> 4 × 102 ___ 9 × 10
    12·1 answer
  • A box contains orange balls and green balls. The number of green balls is seven more than three times the number of orange balls
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!