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
harkovskaia [24]
3 years ago
10

Substitutions 1.x + 4y = 6 y = -x + 3 2.x + 2y = 6 x - y = 3

Mathematics
1 answer:
SOVA2 [1]3 years ago
3 0
1x + 4 (-×+3) = 6
1× -4× + 12 = 6
-3× = -6
× = 2

2× +2y = 6
× - y = 3
multiply second equation by 2x - 2y = 6
now add equations
4x = 12 so x = 3. substitute 3 - y = 3 so y is 0. check in first equation 2×3 + 2×0 = 6. 6+0= 6
You might be interested in
The sum of a number xx and 4 equals 12. an equation that represents this sentence is
lora16 [44]
X + 4 = 12

This is because the question gives you everything you require for this sentence to be formed. 12 is the final answer. 4 is added on and x is basically the number that is to be found.
5 0
3 years ago
What ordered pair is a solution of the equation?<br><br> y=-2x-5
ioda

\sf \underline{Answer:}

Pick any value for x, like x = 0, plug it into the equation, and get the value for y. For x = 0,

2(0) + y = 5

y = 5

The ordered pair is (0,5). Find other ordered pairs using the same reasoning.

3 0
1 year ago
Read 2 more answers
Bella measured these outside temperatures for each of four days.
kap26 [50]
What is the complete question and what are the choices??
4 0
3 years ago
Help easy math question!!!
bogdanovich [222]

Answer:

The length of the third side of the triangle is 30.

Step-by-step explanation:

Here is the formula for the Pythagorean Theorem:

a^{2} + b^{2} = c^{2}

The hypotenuse, based on the problem, is 50. Anyways, let's get back to calculating!

We need to multiply 40 times 40 and 50 times 50.

40 times 40, or 40 squared, equals to 1600.

50 times 50, or 50 squared, equals to 2500.

c^{2} - b^{2}  = a^{2}

Now, let's subtract. 2500 - 1600 = 900. We need to find the square root of 900--which is 30, because 30 times 30, or 30 squared, equals to 900.

8 0
3 years ago
If money in a savings account earned 8% interest per annum, how much nterest would be earned on $150.00 over three years?
Pani-rosa [81]

Answer:

$36

Step-by-step explanation:

Given :

Interest rate, r = 8% = 0.08

Principal, P = 150

Time, t = 3 years

Simple interest = (principal * rate * time)

Simple interest = (150 * 0.08 * 3)

Simple interest = $36

7 0
3 years ago
Other questions:
  • Given the function f(x) x-5 all over 3 solve for f^-1(3)
    15·1 answer
  • -8x+4y=-3
    8·2 answers
  • F(x)= x^3 - 9xf(x)=x
    11·2 answers
  • If a famer plows 2 acres every 3 hours how long will it take to plow 60 acres
    7·1 answer
  • Two right triangles are graphed on a coordinate plane. One triangle has a vertical side of 2 and a horizontal side of 6. The oth
    13·1 answer
  • Jack bought 4 bagels for 3.00. how many bagels can he buy for 4.50?
    5·2 answers
  • Which graph represents the function f(x)=-|x|-2?
    10·1 answer
  • What is the circumference of the circle below?​
    6·1 answer
  • Dr. W Sweet Rides Car Rental charges a flat fee of $24 and an additional $0.35 for every mile the car is driven. Which function
    8·1 answer
  • Amari pays $7,440 in taxes on his income of $46,500. What percentage of his income is going toward taxes???
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!