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Sphinxa [80]
3 years ago
14

Simplify the expression: 7x2–5x2 i need the answer quickly

Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
5 0

Answer:

2x^2

Step-by-step explanation:

combine like terms, and do the subtraction!

exis [7]3 years ago
3 0

Answer:

2x^2

Step-by-step explanation:

7x^2-5x^2 is equal to 2x^2 because they have the same degree, they are able to be added and subtracted.

If this has helped you please mark as brainliest

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Determine whether each statement is true or false. if true, explain your reasoning . If false provide a counter example.
Goshia [24]

Answer:

1. False

2. False

3. True

Step-by-step explanation:

1. The diagonals of a rectangle always form four congruent triangles, which is a false statement.

The counter-statement will be, the diagonals of a square always form four congruent triangles.

2. A quadrilateral has perpendicular diagonals. Is this enough to determine what type of quadrilateral it is?

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3. Explain why drawing a diagonal on any parallelogram will always result in two congruent triangles and it is true that the two triangles will be congruent as the opposite sides of the parallelogram are equal and there is a common side which is the diagonal itself.

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LuckyWell [14K]

Answer:

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Step-by-step explanation:

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3 years ago
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Find the value of X! Please help!
nydimaria [60]
ANSWER

x = 8 \sqrt{3}

EXPLANATION

{h}^{2} = {y}^{2} + {4}^{2}
This implies that,

{h}^{2} = {y}^{2} + 16...eqn1

Also,

{h}^{2} + {x}^{2} = {16}^{2} ...eqn2

And

{y}^{2} + {12}^{2} = {x}^{2}

{y}^{2}={x}^{2} - 144 ...eqn3

Put equation 1 into equation 2.

This will give us,

{y}^{2} + 16 + {x}^{2} = {16}^{2}

{y}^{2} +{x}^{2} = {16}^{2} - 16

{y}^{2} +{x}^{2} =16 ( 16 - 1)

{y}^{2} +{x}^{2} =240...eqn4

We put equation 3 into equation 4,

{x}^{2} - 144+{x}^{2} =240

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2 {x}^{2} = 384

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x = 8 \sqrt{3}
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3 years ago
A taxi cab charges $0.55 per mile in addition to a $1.75 flat rate fee. Susie has $10 to spend on a taxi cab ride. The taxi driv
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0.55m + 1.75 < = 10m > 2
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