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2 years ago

A swimming pool is 30 yards wide. The pool has lanes for swimming laps. Each lane is 9 feet wide. How many lanes are there?

Mathematics

2 answers:

alexandr402 [8]2 years ago

5 0

Answer:

Step-by-step explanation:

30/9 = 3.33333333333

Since there the maximum amount of lanes there can be is 3 without having a remainder, the answer is three.

katovenus [111]2 years ago

3 0

3!
30 divided by 9 is 3.333+ and if u round it, it’ll be 3:)
Hope this helps!

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What is the equation of a circle with a center (-2, 3) and a radius r = 5?

qwelly [4]

The formula for the equation of a circle is:
(x - h)^2 + (y - k)^2 = r^2

(h, k) is the center.

So the equation would be:
(x + 2)^2 + (y - 3)^2 = 5^2
or
(x + 2)^2 + (y - 3)^2 = 25

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3 years ago

Use the quadratic formula to find the solutions for..<br> y = 2x^2 - 9x + 5.

Yakvenalex [24]

Answer: $x=\frac{9}{4}-\frac{\sqrt{41} }{4} \\x=\frac{9}{4}+\frac{\sqrt{41} }{4}$

Step-by-step explanation:

$2x^2-9x+5$

a=2

b=-9

c=5

$x=\frac{-b\frac{+}{}\sqrt{b^2-4ac} }{2a}$

$x=\frac{-(-9)\frac{+}{}\sqrt{(-9)^2-4(2)(5)} }{2(2)}$

$x=\frac{9\frac{+}{}\sqrt{81-40} }{4}$

$x=\frac{9\frac{+}{}\sqrt{41} }{4}$

$x=\frac{9}{4}-\frac{\sqrt{41} }{4} \\x=\frac{9}{4}+\frac{\sqrt{41} }{4}$

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3 years ago

Mick dropped 2 pennies and he had 7 how many does he have left

sesenic [268]

Answer:

Step-by-step explanation:

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3 years ago

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9.8j - 6 = 36<br> solve the equation, round to the nearest hundredth

Lady_Fox [76]

Answer:

j = 4.29

Step-by-step explanation:

9.8j - 6 = 36

+ 6 +6

9.8j = 42

9.8j/9.8 = 42/9.8

j = 4.29

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2 years ago

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Evaluate the expression

larisa86 [58]

Answer:

$12-[20-2(6^2\div3\times2^2)]=88$

Step-by-step explanation:

So we have the expression:

$12-[20-2(6^2\div3\times2^2)]$

Recall the order of operations or PEMDAS:

P: Operations within parentheses must be done first. On a side note, do parentheses before brackets.

E: Within the parentheses, if exponents are present, do them before all other operations.

M/D: Multiplication and division next, whichever comes first.

A/S: Addition and subtraction next, whichever comes first.

(Note: This is how the order of operations is traditionally taught and how it was to me. If this is different for you, I do apologize. However, the answer should be the same.)

Thus, we should do the operations inside the parentheses first. Therefore:

$12-[20-2(6^2\div3\times2^2)]$

The parentheses is:

$(6^2\div3\times2^2)$