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3 years ago

11

The room numbers on one side of a school corridor are consecutive positive even integers. The product of The room numbers for tw

o adjoining rooms on that side is 7224. Find the room numbers.

1 answer:

Vinvika [58]3 years ago

8 0

Numbers are n, n+2 and we have n(n+2)=7224. Or
n^2+2n-7224=0
Using the quadratic equation
n=84. So n+2=86
The numbers are 84, 86

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javier rode his bike for a total of 41 minutes. before lunch he rode 1 minute less than 5 times the number of minutes he rode af

notka56 [123]

Answer:

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Step-by-step explanation:

Let the number of minutes Javier rode the bike after lunch be = x minutes

Then according to question number of minutes he rode the bike after lunch

$= 5x-1$

Total number of minutes he rode bike = 41 min

Therefore,

$x+5x-1 =41$

On solving

$6x= 41+1 =42$

Divide both side by 6 we get

$x= 7$

Number of minutes he ride before lunch

$= 5(7)-1 = 35-1=34$ min

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3 years ago

|x-1|+2<4 solving for x

Ganezh [65]

Answer:

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Step-by-step explanation:

Step 1: Subtract 2 from both sides.

$|x-1| + 2 - 2 < 4 - 2$
$|x-1|$

Step 2: Solve absolute value.

We know x - 1 < 2 and x - 1 > -2.

Condition 1:

$x - 1 < 2$
$x - 1 + 1 < 2 + 1$ (Add 1 to both sides)
$x < 3$

Condition 2:

$x - 1 > -2$
$x - 1 + 1 > -2 + 1$ (Add 1 to both sides)
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Therefore, the answer is x < 3 and x > -1.

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2 years ago

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77julia77 [94]

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Step-by-step explanation:

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3 years ago

Ratios that are equivalent to 7: 6.

Alex

Step-by-step explanation:

21:18=7:6

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2 years ago