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Sergio [31]
3 years ago
10

Solve for x: (x - 1)(3x + 1) = 0

Mathematics
1 answer:
sleet_krkn [62]3 years ago
6 0

Answer:

x=1 and x=-1/3

Step-by-step explanation:

By the zero product property, we have two separate equations, x-1=0 and 3x+1=0

x-1=0

x=1

3x+1=0

3x=-1

x=-1/3

So x=1 and x=-1/3

Hope this helped!

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If HJ=2x+5, JK=3x-7, and KH=18 what is the value of x
weqwewe [10]

Answer:

  • x = 4

Step-by-step explanation:

<u>Given</u>

  • HJ=2x+5
  • JK=3x-7
  • KH=18

<u>We see J is between H and K, so </u>

  • KH = HJ + JK
  • 2x + 5 + 3x - 7 = 18
  • 5x - 2 = 18
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3 years ago
A map has a scale of 3 cm and 20 cm which statement is true or false two cities are actually 66 cm part are9.9 cm part
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Answer:
Answer options
A. Two cities that are 7.5 cm apart on the map are actually 50 km apart.
D. Two cities that are actually 66 km apart are 9.9 cm apart on the map.
Step-by-step explanation:
Step 1
Indicate the scale as shown;
3 cm : 20 km, meaning 3 cm on the map represents 20 km on the ground
A). what does 7.5 cm represent on the ground
Distance on ground=(7.5×20)/3=50 km
B). what does 4 cm represent on the ground
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C). what does 45 km on ground represent on the map
Distance on map=(45×3)/20=6.75 cm
D). what does 66 km on ground represent on the map
Distance on the map=(66×3)/20=9.9 cm
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B one is the is the answer bcoz it is positive

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