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Norma-Jean [14]
3 years ago
12

Please help with number 20

Mathematics
1 answer:
Over [174]3 years ago
5 0

Answer:

6x

2

−3−7x

=6x

2

−7x−3

=6x

2

−9x+2x−3

=3x(2x−3)+1(2x−3)

=(2x−3)(3x+1).

Then, f(x)=0⟹2x−3=0 and 3x+1=0.

Therefore, 2x=3 and 3x−−1.

That is, x=

2

3

, x=

3

−1

.

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Choose the statement that is not always true. for a rhombus
andreev551 [17]

Answer:

equal sides


Step-by-step explanation:


the side aren't always the same



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Reil [10]

Answer:

- 3rs

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5 0
4 years ago
3-x=5x+21
vlada-n [284]

Answer:

<h3>\boxed{ \sf{ \bold{- 3}}}</h3>

Step-by-step explanation:

\sf{3 - x = 5x + 21}

Move 5x to left hand side and change it's sign

⇒\sf{  - x - 5x  + 3 = 21}

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Collect like terms

⇒\sf{ - 6x = 21 - 3}

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Hope I helped!

Best regards!!

3 0
3 years ago
Read 2 more answers
Find the length of the third side. If necessary, round to the nearest tenth. 10 14 ​
abruzzese [7]

Answer:

9.8 units

Explanation:

According to Pythagoras theorem, the square of length of the hypotenuse is equal to the sum of squares of lengths of other two sides.

Let the third side be x units.

Then,

x² + 10² = 14²

=> x² + 100 = 196

=> x² = 196 - 100

=> x² = 96

=> x = √96

=> x = 4√6

=> x = 9.79....

=> x = 9.8 (Rounding to the nearest tenths)

So, the length of the third side is 9.8 units.

5 0
3 years ago
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