(6a-blank)5ablanka^2-35a

Kevin is 3 times as old as Daniel. 4 years ago, Kevin was 5 times as old as Daniel.

DochEvi [55]

X is Kevin; Y is Dan

X = 3Y

X - 4 = 5(Y - 4)

3Y - 4 = 5(Y - 4)
3Y - 4 = 5Y - 20
   + 4 +4
4 cancels each other out.
3Y = 5Y - 16
   - 5 -5
5 cancels each other out.
-2Y = -16
/2 /2
   Y = 8

X = 3Y;
X = 3 x 8;

Thus,
X = 24;
Kevin(x) is 24

8 0

4 years ago

Please help me on #37. I know for A you would use the quadratic equation but I got the wrong answer.

ozzi

Δ = (8i)^2 - 4*(-25) => Δ = -36 +100 => Δ = 64 => x1 =(-8i + 8)/2 => x1 = -4i +4;
x2 = (-8i - 8)/2 => x2 = -4i-4; in this case, your solutions are complex conjugates.

6 0

3 years ago

Explain the Error: Jayme tells her friend that ordered pairs that have an x-coordinate of O lie on the x-axis. She uses the orig

Paul [167]

Answer:

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Step-by-step explanation:

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4 0

3 years ago

Solve the inequality for the missing variable<br> 24 -1t<br> 1/5

Scorpion4ik [409]

Answer:

−t+24

Step-by-step explanation:

8 0

3 years ago

How many times does 6 go into 24?

Sunny_sXe [5.5K]

Answer:

4

Step-by-step explanation:

4 0

4 years ago

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