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
True [87]
2 years ago
9

x+4y=17 and -x-6y=-23 what's the x and y I really badly need this I need this so I can play at my basketball game tommorw and I

still have like 8 questions to go

Mathematics
1 answer:
loris [4]2 years ago
7 0

<u>Answer:</u>

  • x = 5
  • y = 3

<u>Solution:</u>

  • => x + 4y = 17

            -x - 6y = -23

  • => -2y = -6
  • => y = 3

<u>Now, let's substitute the value of y into the first equation.</u>

  • x + 4y = 17
  • => x + 4(3) = 17
  • => x + 12 = 17
  • => x = 5

<u>Let's check our answer to make sure it is correct.</u>

<u>Check:</u>

  • -x - 6y = -23
  • => -(5) - 6(3) = -23
  • => -5 - 18 = -23
  • => -23 = -23

Hence, this is proven correct.

Hoped this helped.

BrainiacUser1357

You might be interested in
PLEASE HELP I WILL GIVE BRAINLIEST!!!
Komok [63]

Answer: I got the answer for the 17. question And its D

Step-by-step explanation: Bc i am 100% sure its right.

8 0
3 years ago
Read 2 more answers
You are conducting a study to test whether there is a difference in the mean number of alcoholic drinks consumed per evening bet
salantis [7]

The value of test statistic is 5.45

Data;

  • n1 = 25
  • n2 = 30
  • x1 = 6.2
  • x2 = 3.8
  • s1 = 2
  • s2 = 1

<h3>Test Statistic</h3>

The formula to calculate the test statistic is given as

t = \frac{x_1 - x_2}{\sqrt{\frac{s_1^2}{n_1}+ \frac{s_2^2}{n_2}  } } \\

Let's substitute the values and solve for t

t = \frac{x_1 - x_2}{\sqrt{\frac{s_1^2}{n_1}+ \frac{s_2^2}{n_2}  } } \\t = \frac{6.2 - 3.8}{\sqrt{\frac{2^2}{25} + \frac{1^2}{30}  } } \\t = \frac{2.4}{0.44} = 5.45

The value of test statistic is 5.45

Learn more on test statistic here;

brainly.com/question/15980493

5 0
3 years ago
Brian made a tasty burger . the diameter of the Burger was 5cm. what is the radius of the circle?
4vir4ik [10]

19.625cm squared because you have to divide the diameter by 2 to get the radius.

Area of circle = pi times radius times radius

= 3.14 times 2.5 times 2.5

= 19.625cm squared

6 0
3 years ago
What is the value of the expression of 1.623/100
Masja [62]

Step-by-step explanation:

1.623/100

=1.623×10^-2

or

=0.01623

Hope it helps

8 0
3 years ago
Find the critical points of the surface f(x, y) = x3 - 6xy + y3 and determine their nature.​
Vedmedyk [2.9K]

Compute the gradient of f.

\nabla f(x,y) = \left\langle 3x^2 - 6y, -6x + 3y^2\right\rangle

Set this equal to the zero vector and solve for the critical points.

3x^2-6y = 0 \implies x^2 = 2y

-6x+3y^2=0 \implies y^2 = 2x \implies y = \pm\sqrt{2x}

\implies x^2 = \pm2\sqrt{2x}

\implies x^4 = 8x

\implies x^4 - 8x = 0

\implies x (x-2) (x^2 + 2x + 4) = 0

\implies x = 0 \text{ or } x-2 = 0 \text{ or } x^2 + 2x + 4 = 0

\implies x = 0 \text{ or } x = 2 \text{ or } (x+1)^2 + 3 = 0

The last case has no real solution, so we can ignore it.

Now,

x=0 \implies 0^2 = 2y \implies y=0

x=2 \implies 2^2 = 2y \implies y=2

so we have two critical points (0, 0) and (2, 2).

Compute the Hessian matrix (i.e. Jacobian of the gradient).

H(x,y) = \begin{bmatrix} 6x & -6 \\ -6 & 6y \end{bmatrix}

Check the sign of the determinant of the Hessian at each of the critical points.

\det H(0,0) = \begin{vmatrix} 0 & -6 \\ -6 & 0 \end{vmatrix} = -36 < 0

which indicates a saddle point at (0, 0);

\det H(2,2) = \begin{vmatrix} 12 & -6 \\ -6 & 12 \end{vmatrix} = 108 > 0

We also have f_{xx}(2,2) = 12 > 0, which together indicate a local minimum at (2, 2).

3 0
2 years ago
Other questions:
  • Find the distance BF for the points B(1,-1) and F(-3,5)
    7·1 answer
  • A business has a goal of selling 500 bags of chips with 3 days left they have 332 to go .at least how many do they need to avera
    8·1 answer
  • A construction crew built 3 3/4 miles of road in 1 1/8 days.
    14·1 answer
  • From a group of 7 candidates, a committee of 6 people is selected. In how many different ways can the committee be selected?
    5·1 answer
  • Find the measure of each angle in the isosceles trapezoid WXYZ.
    15·1 answer
  • Peter calculated that the theoretical probability of obtaining exactly two heads when flipping six coins is 23.4%. What number o
    11·1 answer
  • Which investment data is best modeled by an exponential function?
    11·2 answers
  • What is the slope of the line?
    5·1 answer
  • Can anybody help with this?
    8·1 answer
  • 23) Find 12 1/2% of 2 dozen​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!