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
Radda [10]
3 years ago
12

What is 4x+3y= -5 and -3x+4y=12 in elimination?

Mathematics
2 answers:
Aleonysh [2.5K]3 years ago
8 0

Answer:

Step-by-step explanation:

4x+3y=-5   ...(1)

-3x+4y=12   ....(2)

By 3(1)+4(2) gives

12 x+9y-12x+16y=-15+48

25y=33

y=33/25=1.32

from (1)

4x+3(33/25)=-5

4x=-5-99/25=(-125-99)/25=-224/25

x=-224/100=-2.24

andriy [413]3 years ago
3 0
4x+3y=-5 answer 4x+34+5=0 -3x+4y=12 answer 3x-4y+12=0
You might be interested in
What's the unit fraction of 23/138?
Mice21 [21]
1/6 If you have a graphing calculator, it would be simple to type in the fraction as a division equation then type MATH, ENTER, ENTER.
7 0
3 years ago
Read 2 more answers
If the radius of a sphere is 9 cm. What is the height of the sphere?"
pantera1 [17]

Answer:

honda

Step-by-step explanation:

8 0
3 years ago
Pls i need this, it’s due today.<br> i will mark brainliest.
MArishka [77]

Answer:

Step-by-step explanation:

Y intercepts : 5,-1,3,7,1

X- intercepts: 2,3,1,-1

Its decreasing

It is a negative slope

Maximum : 7 for y

Min : -1

8 0
3 years ago
In the sophomore class at Dixon high school the number of students taking French is 2/3 of the number taking Spanish. How many s
Elan Coil [88]
I think it's 104. something
4 0
3 years ago
find the coordinates of the point P on the parabola y=1-x^2 with domain 0≤x≤1 that minimize the area of the triangle enclosed by
coldgirl [10]

Let point P be with coordinates (x_0,y_0). Find the equation of the  tangent line.

1. If y=1-x^2, then y'=-2x.

2. The equation of the tangent line at point P is

y-y_0=-2x_0(x-x_0).

Find x-intercept and y-intercept of this line:

  • when x=0, then y=y_0+2x_0^2;
  • when y=0, then x=\dfrac{y_0}{2x_0}+x_0=\dfrac{y_0+2x_0^2}{2x_0}.

The area of the triangle enclosed by the tangent line at P, the x-axis, and y-axis is

A=\dfrac{1}{2}\cdot (2x_0^2+y_0)\cdot \left(\dfrac{y_0+2x_0^2}{2x_0}\right)=\dfrac{(y_0+2x_0^2)^2}{4x_0}.

Since point P is on the parabola, then y_0=1-x_0^2 and

A=\dfrac{(1-x_0^2+2x_0^2)^2}{4x_0}=\dfrac{(1+x_0^2)^2}{4x_0}.

Find the derivative A':

A'=\dfrac{2(1+x_0^2)\cdot 2x_0\cdot 4x_0-4(1+x_0^2)^2}{16x_0^2}=\dfrac{12x_0^4+8x_0^2-4}{16x_0^2}.

Equate this derivative to 0, then

12x_0^4+8x_0^2-4=0,\\ \\3x_0^4+2x_0^2-1=0,\\ \\D=2^2-4\cdot 3\cdot (-1)=16,\ \sqrt{D}=4,\\ \\x_0^2_{1,2}=\dfrac{-2\pm4}{6}=-1,\dfrac{1}{3},\\ \\x_0^2=\dfrac{1}{3}\Rightarrow x_0_{1,2}=\pm\dfrac{1}{\sqrt{3}}.

And

y_0=1-\left(\pm\dfrac{1}{\sqrt{3}}\right)^2=\dfrac{2}{3}.

Answer: two points: P_1\left(-\dfrac{1}{\sqrt{3}},\dfrac{2}{3}\right), P_2\left(\dfrac{1}{\sqrt{3}},\dfrac{2}{3}\right).

6 0
3 years ago
Other questions:
  • HELP ME IN CIVICS 80 POINTS Which of the following conclusions can be supported by the information in this chart?
    15·1 answer
  • Vincent van Gogh is making one-color versions of all his paintings. He uses colors in the following order from the beginning: re
    14·2 answers
  • What percent of 8 is 32.52?
    6·1 answer
  • Jennifer is leasing a car from a local auto retailer. The terms of the lease include a 9% interest rate for 36 months with a res
    12·1 answer
  • 5<br>X Х please find the answer<br>20​
    5·1 answer
  • Find the volume of a pyramid with a square base, where the side length of the base is 16 in16\text{ in} 16 in and the height of
    9·1 answer
  • Can someone answer this math question
    8·1 answer
  • Liam and Kaiden are brothers who go to different schools. The school day is just as long at Liam's school as at Kaiden's school.
    11·1 answer
  • Help I don’t get it..
    6·1 answer
  • Evaluate. y2 + 2y + 5 for y = -5​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!