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Arlecino [84]
3 years ago
9

Keisha swims 18 ft from one side of her circular pool to the other, swimming straight through the center. She then swims one tim

e around the entire edge of her swimming pool.
Use 3.14 for π

Round your answer to the nearest tenth.

____ ft
Mathematics
1 answer:
elena-s [515]3 years ago
6 0

Answer:

Swimming one time around the pool is 56.5 ft

Step-by-step explanation:

Swimming 18 ft from one side of her circular pool to the other, swimming straight through the center means the circular swimming pool has a diameter of d=18 ft.

The circumference of the circle is calculated using:

c = \pi \: d

where d=18 is the diameter and π=3.14 as given.

We substitute the values to get:

c = 3.14 \times 18

c = 56.52

We approximate to the nearest tenth to get:

c = 56.5ft

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Answer:

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C. because it is not precise

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Step-by-step explanation:

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3 years ago
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Naily [24]
The answer is x = 6

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7 0
3 years ago
IN (3)
svetoff [14.1K]

Answer:

(a) Rule: Multiply the input (x) by 2 and add 5 to the result of the product

(b) y  =2x +5

Step-by-step explanation:

Given

The attached table

Solving (a): The rule of the table in words

First, we calculate the slope (m)

m = \frac{y_2 - y_1}{x_2 - x_1}

Using:

(x_1,y_1) =  (2,9)

(x_1,y_1) =  (10,25)

So, we have:

m = \frac{25 - 9}{10 - 2}

m = \frac{16}{8}

m=2

The equation is calculated using:

y - y_1 =m(x - x_1)

Using:

(x_1,y_1) = (6,17)

We have:

y - 17 =2(x - 6)

y - 17 =2x - 12

Make y the subject

y  =2x - 12+17

y  =2x +5

Hence, the rule is:

Multiply the input (x) by 2 and add 5 to the result of the product

(b): The rule, in algebra

As solved in (a), the rule is:

y  =2x +5

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3 years ago
Solve.<br><br><br> k<br> 5<br> + 9 = 22<br><br> k =
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Answer:

Step-by-step explanation:

Here you go mate

Step 1

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Step 2

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-3x<3

Step 3

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3 years ago
Find the value of x that make it true
lesantik [10]

Answer:

Step-by-step explanation:

1). 10 = \frac{1+7x}{7+x}

   10(7 + x) = 1 + 7x

   70 + 10x = 7x + 1

   10x - 7x = 1 - 70

   3x = -69

   x = -23

2). 0.2 = \frac{6+2x}{12+x}

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3). 0.8 = \frac{x}{x+0.5}

    0.8(x + 0.5) = x

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    -3.5x - 2x = 4 - 1.75

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     x = -\frac{2.25}{5.5}

     x = - \frac{9}{22}

6 0
2 years ago
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