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elena55 [62]
3 years ago
7

Simplify fractions in equation

Mathematics
1 answer:
Fittoniya [83]3 years ago
5 0
The answer is on the paper

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Value of 3x^2 +4y^2 if x=2, y=1, and z= -3
Dennis_Churaev [7]

3x^2+4y^2\\\\\text{Put the values of x=2, y=1 and z=-3 to the expression:}\\\\3(2^2)+4(1^2)=3(4)+4(1)=12+4=16

4 0
3 years ago
Suppose two rectangles have the same area. Must they have the same length and width? Explain.​
Monica [59]

Answer:

no

Step-by-step explanation:

Two rectangles having the same area do not need to have the same length and width. The length and width of the rectangle are just factor pairs of the number that is the area. For example, if the area was 12, the side lengths would be 1 and 12, 2 and 6, or 3 and 4. As you can see, those aren't the same lengths and widths. A rectangle may be 1x12 and another may be 3x4, but they have the same area.

5 0
2 years ago
Can anyone help me understand this
bagirrra123 [75]

Answer:

(x, y) = (2, 9)

Step-by-step explanation:

For the triangles to be congruent, the hypotenuses must be the same length:

y = x + 7

and the marked leg must be the same length in each triangle:

y -3 = 4x -2

These are two equations in two unknowns (a "system" of equations) that can be solved in any of the usual ways. Since the first equation gives an expression for y, it is convenient to substitute that into the second equation:

(x +7) -3 = 4x -2

x +4 = 4x -2 . . . . . . collect terms

x +6 = 4x . . . . . . . . .add 2

6 = 3x . . . . . . . . . . . subtract x

2 = x . . . . . . . . . . . . divide by 3

y = 2 + 7 = 9 . . . . . .substitute for x in the first equation

The values you're looking for are x = 2, y = 9.

5 0
2 years ago
What are the solutions for the equation x2 +4x +4 = 25
inessss [21]

Answer:

Alright so the Answer to this question is

x = 3, - 7 Why? because you have to move all terms to the left side and set equal to zero, then set each factor equal to zero Hope this helps :)

Step-by-step explanation:


3 0
3 years ago
Lisa opens a savings account with an initial deposit of $453. She deposits an additional $50 each month. Anthony also opens a sa
Wewaii [24]

Answer: Dunno I'm lazy lol T-T

Step-by-step explanation: 123

8 0
2 years ago
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