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blondinia [14]
3 years ago
8

‐4x+7y=‐13 -2x+8y=‐2 Solve the system of equation

Mathematics
2 answers:
timama [110]3 years ago
3 0

Answer: Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form: (5,1)

Equation Form: x=5,y=1

Gala2k [10]3 years ago
3 0

Answer:

(5,1)

Step-by-step explanation:

4x + 7•(x /4-1/4) = -13

   -9x/4 = -45/4

   -9x = -45

Solve equation for the variable  x

 9x = 45

  x = 5

By now we know this much :

x = 5

   y = x/4-1/4

Use the  x  value to solve for  y

   y = (/4)(5)-1/4 = 1

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What is the difference of the polynomials?
Vilka [71]

Answer:

8r^6s^3-5r^5s^4+r^4s^5+5r^3s^6

Step-by-step explanation:

We want to simplify;


(8r^6s^3-9r^5s^4+3r^4s^5)-(2r^4s^5-5r^3s^6-4r^5s^4)


We expand the bracket to obtain;


8r^6s^3-9r^5s^4+3r^4s^5-2r^4s^5+5r^3s^6+4r^5s^4


We now group the like terms to obtain;


8r^6s^3-9r^5s^4+4r^5s^4+3r^4s^5-2r^4s^5+5r^3s^6


We now simplify to get;

8r^6s^3-5r^5s^4+r^4s^5+5r^3s^6


The correct answer is C


3 0
4 years ago
Read 2 more answers
the base of a rectangle has a length of 4 inches and a diagonal has a length of 5 inches, Find the area of the rectangle
Helen [10]
Do you happen to know what the width of the rectangle is?
because the formula to find the area of a rectangle is

A=wl
A is the area
w is the width
l is the length
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6 0
3 years ago
Ian used 2/7 of a box of tissues in 1/3 of an hour. at this rate how much of the box will he use in one hour
Virty [35]

Answer:

6/7 in 1 hour

Step-by-step explanation:

He will use 6/7 in one hours because

1/3 = 2/7

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7 0
4 years ago
Somebody plz plz plz plz tell me how she got divided by 5!!! It’s URGENT
mezya [45]

When we're finding the mean we add all the numbers then we DIVIDE THE AMOUNT OF NUMBERS. In this case, we have to divide by 5 because that's the amount of numbers there are.

5 0
3 years ago
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Molodets [167]

Answer:

7=a

Step-by-step explanation:

look at image for step by step

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3 years ago
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