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
Nikitich [7]
3 years ago
13

How do you do this simultaneous equation?

Mathematics
1 answer:
tatiyna3 years ago
5 0
The y is the same for both equations. Equate them
-x - 5 = 2x + 4 Add x to both sides
- 5 = 3x + 4 Subtract 4 from both sides.
- 9 = 3x Divide by 3
x = -9 / 3
x = - 3

y = - x - 5
y = -(-3) - 5
y = - 2

So that point is where the two equations meet.

To see the graph of your question on the internet, go to 
Wolframalpha.com 
and put this string in the question space.
y = -x - 5; y  = 2x + 4  Note the semi colon in the middle.

To the moderator: This is my own work. I'm using Wolfram to get the answer.
You might be interested in
A bank quotes an interest rate as 0.06341 annual effective yield. What interest rate, compounded monthly, will provide that
Leviafan [203]

9514 1404 393

Answer:

  0.06164

Step-by-step explanation:

The effective annual rate obtained by compounding nominal annual rate r monthly is ...

  eff rate = (1 +r/12)^12 -1

Then the value of r is ...

  r = 12×((eff rate) +1)^(1/12) -1)

For the given effective rate, that is ...

  r = 12×(1.06341^(1/12) -1) ≈ 0.06164 . . . . nominal annual interest rate

4 0
3 years ago
15. Apply Mathematics (1)(A) Suppose you have a box with a 4 X 4-in.
erastova [34]

Answer:

Step-by-step explanation:

Formula for calculating the surface area of the box S = 2(LW+LH+WH) where

L is the length of the box

W is the width of the box

H is the height of the box

If the box is square based with dimension 4 * 4in, then L = W = 4in. substituting this values given into the formula we will have;

S = 2(4(4)+4H + 4H)

S = 2(16+8H)

S = 32+16H

<em>Hence, The function that represents the surface area of this box as a </em>

<em>function of its height is S = 32+16H where H is the height of the box</em>

<em></em>

Given H = 6.5in, to evaluate the function, we will substitute h = 6.5in into the modeled equation;

S = 32+16H

S = 32+16(6.5)

S = 32+106

<em>S = 138in²</em>

<em>Hence the total surface area of the box is 138in²</em>

5 0
3 years ago
What value of "a" makes the system 3x-y=17 and ax+y=-7 have no solution?
Norma-Jean [14]

Answer:

y=-7-ax

3x-(-7-ax)=17

3x+7+ax=17

3x+ax=10

x(3+a)=10

x=10,3+a=10 a=10-3 a=7

5 0
3 years ago
Graph then line that represents the equation y=-2/3x +1 ?
Aleksandr [31]
First, you would start on the orgin (0,0), and move up 1. You should now be at (1,0) make a point here
Next, you will move down 2. You should now be at (-1,0)
Finally, you move right 3.

You should now be at (-1,3)
Make a point

Hope this helps!
7 0
3 years ago
5. Find the area of a triangle with sides a = 5, b = 8, and c = 11.
earnstyle [38]
Um i think that the answer is c.12.46

4 0
3 years ago
Other questions:
  • Find the mileage for a car that travels 576 miles on 18 gallons of gas.
    13·2 answers
  • What is the product written in scientific notation?
    12·1 answer
  • Line JK passes through points J(–3, 11) and K(1, –3). What is the equation of line JK in standard form?
    13·1 answer
  • Fill in the missing monomials: a 100x2= (_____)2
    15·2 answers
  • A graph is shown below: A graph is shown. The values on the x axis are 0, 2, 4, 6, 8, and 10. The values on the y axis are 0, 4,
    11·1 answer
  • The probability of observing a particular value of a continuous random variable​ _______.
    8·1 answer
  • What is the algebraic expression for "the difference between seven times a number and three times that number"?
    11·2 answers
  • Factor:<br> 4tan^2x-(4)/(cotx)+sinx(cscx) ...?
    7·1 answer
  • There are 4.5 litres of milk in a pot. The chef stirs in 2.5 g of salt and 1.2 litres of water. How much liquid is in the pot?
    12·1 answer
  • A rectangular portrait is 2 yards wide and 2 yards high. It costs $7.61 per yard to put a gold frame around the portrait. How mu
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!