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Pavel [41]
4 years ago
7

20 points!! I need help

Mathematics
1 answer:
zaharov [31]4 years ago
4 0

Answer:

11.33 * 16.33 meters to the nearest hundredth.

Step-by-step explanation:

Let the width of the pool be x meters, then the length is x+5 meters.

The length of whole area = x + 5 + 2(3)  = x + 11 meters and the width is

x + 2(3) = x + 6 meters.

So we have the equation (x + 6)(x + 11) = 387.

x^2 + 17x + 66 = 387

x^2 + 17x - 321 = 0

x =  [-17 +/- sqrt (17^2 - 4*1*-321)] / 2

x = 11.33 meters

So the width is 11.3 m and the length is 16.33 meters.

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HELP. NEED HELP FAST
Zielflug [23.3K]

Answer:

C.   3

Step-by-step explanation:

8 / 1/3

When dividing fractions, do CCF (Copy, Change, Flip)

You keep the first number:  8

Change the division sign to multiplication:   X

Flip the fraction to make it its reciprocal:   3/1

New expression:

8 X 3/1     or     8 X 3

5 0
3 years ago
SOMEONE HELP PLEASE!!! BRAINLY TO FIRST PERSON TO ANSWER CORRECTLY
Anarel [89]

Answer:

<h2>3\ in.^{3}</h2>

I think the answer is 3\ in.^{3} <em>because the math adds up easily for this equation.</em>

#TeamTrees

<em>Hope this helps! <3</em>

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3 years ago
PLEASE HELP ASAP!!!!!!!!!!!!!!!!!
Kamila [148]

Answer:

Twelve tickets cost $30 --> True

Thirty tickets cost $12 --> False

Each additional costs $2.50 --> True

The table is a partial rep --> True

ordered pairs --> False

Step-by-step explanation:

Twelve tickets cost $30 --> True, you can literally see that in the table

Thirty tickets cost $12 --> False, 30 is not in the table so you don't have that information. Besides, $12 is an unlikely low value for so many tickets.

Each additional costs $2.50 --> True, you can see the difference in the TotalCost column to be consistently 2.50.

The table is a partial rep --> True, values below 11 are not shown for example.

ordered pairs --> False --> Then the x value should be first, e.g., (11, 27.50), since the cost y is a function of the number x.

3 0
3 years ago
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ddd [48]

Answer:

\frac{0.04}{n}, or \frac{1}{25n}

Step-by-step explanation:

To divide, we can use fractions. So we can say that 0.04 divided by n is \frac{0.04}{n}, or \frac{1}{25n}.

8 0
4 years ago
Liana's class was going on a very exciting school trip, but when Liana got to school, the school bus had already left! Frantic,
Llana [10]

Answer:

  • <u>They can catch up with the bus at 10:40 am.</u>

Explanation:

1. Set the time when Liana and her mother can leave (8:40 am) as t₀ = 0; thus the time of driving for them will be t.

2. The average speed at whic Liana's mother drive: 60 miles/hour

3. Thus, the distance they will have driven will be:

  • distance = average speed × time = 60t

4. The time the bus left was 8:00 am, which is 40 minutes before Liana and her mom can leave.

Thus, the time wil have driven when Liana and her mom have driven t hours  minutes will be: t + 40 min / 60 min/ hour = t + 2/3

5. The average speed of teh bus is 45 miles / hour

6. The distance the bus will have driven will be:

  • distance = average speed × time = 45(t + 2/3)

7. When Liana and her mother catch up with the bus, the distances driven by both of them are equal:

  • 60t = 45(t + 2/3)
  • 60t = 45t + 30
  • 60t - 45t = 30
  • 15t = 30
  • t = 30/15 = 2

Thus, Liana and her mom can catch up with the bus after 2 hours, since 8:40 am; this is, 10:40 am.

5 0
4 years ago
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