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
polet [3.4K]
3 years ago
13

Hello, I'm trying to solve 6x + y = 4, x - 4y = 19. I have found the y but I cant seem to find the x. Plz help and we cant use d

ecimals.
Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
6 0

Answer:

x=\frac{7}{5}

y=-\frac{22}{5}

Step-by-step explanation:

Given:

The given expressions are.

6x+y=4

x-4y=19

We need to find x and y values.

Solution:

Equation 1⇒ 6x+y=4

Equation 2⇒ x-4y=19

First solve the equation 1 for y.

6x+y=4

y = 4-6x --------(3)

Substitute y = 4-6x in equation 2.

x-4(4-6x)=19

Simplify.

x-(4\times 4 - 4\times 6x)=19

x-(16-24x)=19

x-16+24x=19

Add 16 both side of the equation.

25x-16+16=19+16

25x=35

x=\frac{35}{25}

Divide Numerator and denominator by 5.

x=\frac{7}{5}

Substitute x value in equation 3 and simplify.

y=4-6(\frac{7}{5})

y=4-\frac{6\times 7}{5}

y=4-\frac{42}{5}

y=\frac{5\times 4-42}{5}

y=\frac{20-42}{5}

y=-\frac{22}{5}.

Therefore, the value of x=\frac{7}{5} and y=-\frac{22}{5}.

You might be interested in
Is x - 8 a factor of the function f(x) = -2x3 + 17x2 - 64? Explain.
Oduvanchick [21]

we know that

If (x-8) is a factor of the function f(x)=-2x^{3}+17x^{2}-64

then

x=8 is a root of the function f(x)

therefore

For x=8 the value of the function must be zero

Verify

Substitute the value of x=8 in the function

f(8)=-2(8)^{3}+17(8)^{2}-64

f(8)=-2(512)+17(64)-64

f(8)=-1,024+1,088-64

f(8)=-1,088+1,088

f(8)=0

therefore

<u>the answer is</u>

Yes, (x-8) is a factor of the function f(x)

7 0
3 years ago
Read 2 more answers
How many days would it take a construction loan of $548,048 to earn$50,000 exact interest at 9% interest rate?
san4es73 [151]
\bf \qquad \textit{Simple Interest Earned}\\\\&#10;I = Prt\qquad &#10;\begin{cases}&#10;I=\textit{interest earned}\to &50000\\&#10;P=\textit{original amount deposited}\to& \$548048\\&#10;r=rate\to 9\%\to \frac{9}{100}\to &0.09\\&#10;t=years&#10;\end{cases}&#10;\\\\\\&#10;50000=548048\cdot 0.09t\implies \cfrac{50000}{0.09(548048)}=t\implies 1.014\approx t
8 0
3 years ago
Read 2 more answers
How do you know that these mixtures would make the same shade of light blue paint
andre [41]

Answer:

you don't you just try it numnut

Step-by-step explanation:

6 0
3 years ago
FIRST TO ANSWER GETS BRAINLY<br> Subtract and reduce to lowest terms:4 and 1/7 minuse 2 and 4/7
yan [13]

Answer:

It is 1  4/7

Step-by-step explanation:

7 0
3 years ago
Could someone please help me with this
arsen [322]

Hey!

-------------------------------------------------

Point Slope Form: y - 7 = -5/2(x + 4)

Slope-intercept Form: y = mx + b

m = slope

b = y-intercept

We can automatically eliminate Option A and B because they are both written in point slope form when the questions asks for slope-intercept form.

We can also eliminate option C because the slope in the equation doesn't match the slope in the equation above.

-------------------------------------------------

Answer:

y = -5/2x - 3

-------------------------------------------------

Hope This Helped! Good Luck!

8 0
3 years ago
Other questions:
  • write a division problem that can be used to find the number of vans needed to carry the tourists.Then solve
    5·1 answer
  • How many whole numbers are less than n+1
    13·1 answer
  • Mrs.Ruiz bought 5 bags of balloons for a party.Each bag contained 70 balloons.Andy said mrs.Ruiz bough a total of 75.Andy is inc
    13·1 answer
  • Is an isosceles triangle. What is the length of RT? Round to the nearest hundredth.Enter your answer in the box
    5·1 answer
  • The number of dimes in Kiara's collection is 13 more than 5 times the
    13·1 answer
  • Use the rectangle to find x and y
    15·1 answer
  • I really need help please!
    15·1 answer
  • HELP ME PLZ ASAP it is about cylinders and stuff I kinda understand but also I don't just learn today so...yeah, so showing work
    12·2 answers
  • What is the sum of the degrees of the exterior angles of a convex pentagon
    8·1 answer
  • Use the Pythagorean identity
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!