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Sidana [21]
2 years ago
7

How many real solutions are there for the quadratic equation below?

Mathematics
1 answer:
olga55 [171]2 years ago
7 0

Answer:

2 solutions

Step-by-step explanation:

2 solutions

3/4 - i\sqrt{47}/4

3/4 + i\sqrt{47}/4

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How many solution 6x-4 = x+6 has
natka813 [3]

Answer:

1 solution

Step-by-step explanation:

This is a linear equation and has one solution

6x - 4 = x + 6 ( subtract x from both sides )

5x - 4 = 6 ( add 4 to both sides )

5x = 10 ( divide both sides by 5 )

x = 10 ← only 1 solution

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I believe that answer is No
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1) Helen is 8 years older than Jane. Twenty years ago Helen was three times as old as Jane. How old is each now and what is the
Mice21 [21]

Answer:

Part 1) Helen's age is 32 years old and Jane's age is 24 years old

Part 2) 13 twenty-dollar bills

Step-by-step explanation:

Part 1) Helen is 8 years older than Jane. Twenty years ago Helen was three times as old as Jane. How old is each now and what is the equation?

Let

x----> Helen's age

y---> Jane's age

we know that

x=y+8 ----> equation A

(x-20)=3(y-20) -----> equation B

substitute equation A in equation B and solve for y

(y+8-20)=3(y-20)

y-12=3y-60

3y-y=60-12

2y=48

y=24 years

Find the value of x

x=y+8

x=24+8=32 years

Part 2)

Let

x-----> the number of five-dollar bills

y----> the number of twenty-dollar bills

we know that

5x+20y=305 -----> equation A

y=x+4 ------> x=y-4 ------> equation B

substitute equation B in equation A and solve for y

5(y-4)+20y=305

5y-20+20y=305

25y=325

y=13 twenty-dollar bills

Find the value of x

x=y-4

x=13-4=9  five-dollar bills

5 0
2 years ago
PLEASE HELP!!!!!
poizon [28]
The awnser is A. hope this helps
3 0
2 years ago
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