Please help me on 12 and 13 thanks :)

2 answers:

4 0

Number 12 is 15 that was easy for me

Crank3 years ago

4 0

Problem 12 is an increase. The percent of change is +21%.

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rosijanka [135]

4x²-12x+9=5
4x²-12x+4=0

x= 12±√(144-4*4*4) / 2*4

x= 12 ± √(144-64) / 8

x=12±√80. /. 8

x= 12+4√5. /8

x=3±√5 / 2. C and E

4 0

4 years ago

dezoksy [38]

Answer:

x = 2

Step-by-step explanation:

These are known as alternate exterior angles. These types of angles are equal to each other.

$8x-7=2x+5\\6x-7=5\\6x=12\\x=2$

8 0

3 years ago

LekaFEV [45]

16t^2=400
t^2=25
t=5
5 seconds=B

6 0

3 years ago

sergey [27]

Answer:

men = 12

women = 8

Step-by-step explanation:

COuld i have branliest and heart with 5 star rating thanks!

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3 years ago

liubo4ka [24]

Answer:

Step-by-step explanation:

7 0

4 years ago