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Snezhnost [94]
3 years ago
9

How do I do this its systems of equations

Mathematics
1 answer:
VLD [36.1K]3 years ago
3 0
Let x the subject of the equation in x-2y=-10 this make it x=2y-10 substitute this in the first equation. 3(2y-10)-2y=-6 solve for y, y=6. substitute y in any of the original equations to get x x= 2
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How to solve for literal equations with multiple variables
myrzilka [38]
<span>See examples for the method to solving literal equations for a given variable: Solve A = bh for b. Since h is multiplied times b, you must divide both sides by h in order to isolate b. Since (c+d) is divided by 2, you must first multiply both sides of the equation by 2</span>
6 0
3 years ago
Simplify this expression 4x^2y^3 x 2x^3y^4
sp2606 [1]

Answer:

8 x^5 y^7

Step-by-step explanation:

Simplify the following:

4×2 x^2 y^3 x^3 y^4

Hint: | Combine products of like terms.

4 x^2 y^3×2 x^3 y^4 = 4 x^(2 + 3) y^(3 + 4)×2:

4×2 x^(2 + 3) y^(3 + 4)

Hint: | Evaluate 3 + 4.

3 + 4 = 7:

4×2 x^(2 + 3) y^7

Hint: | Evaluate 2 + 3.

2 + 3 = 5:

4×2 x^5 y^7

Hint: | Multiply 4 and 2 together.

4×2 = 8:

Answer: 8 x^5 y^7

3 0
3 years ago
Which steps can be used to solve 6/7x+1/2=7/8
xenn [34]

Answer:

The answer after solving is 7/16

Step-by-step explanation:

The solutions involves fraction addition & fraction subtraction.

The solution is attached in the picture:

5 0
3 years ago
Read 2 more answers
6 more than 3 times a number
ankoles [38]

Answer:

3x+6 is the answer

Step-by-step explanation:

Have a good day and stay safe!

3 0
3 years ago
Please help me with this problem
Vesna [10]
Part A: D) x is positive, y is negative.
Part B: C) both x and y are negative.

Part A:
P' is found by rotating P 90° counterclockwise about the origin. This makes the coordinates (x,y) transform to (-y,x). Thus (-2,-1) maps to (1,-2).

Part B:
Q'' is found by rotating Q 90° counterclockwise about the origin, then reflecting across the x axis. This makes the coordinates (x,y) first transform to (-y,x), then makes the new y-coordinate the opposite sign. Thus (1,2) first maps to (-2,1), then to (-2,-1).
6 0
4 years ago
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