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OleMash [197]
3 years ago
9

MATH EASY POINTS: the volume of water y (in cubic meters) that flows over niagara falls during peak daytime tourist hours in x m

inutes can be approximated by the equation y=168,000x. Approximately how many cubic meters of water flow over the falls in one hour
Mathematics
1 answer:
andrew-mc [135]3 years ago
7 0

Answer:

10,080,000 cubic meters is the answer.

Step-by-step explanation:

For every minute (x), 168,000 cubic meters (y) of water are added. 1 hour has 60 minutes, so 60 x 168,000. That gives 10,080,000.

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Round each number to the nearest ten.
Bezzdna [24]
552.17 rounds to 550
48.35 rounds to 50
550-50=500
5 0
3 years ago
Simplify:<br><br> √27x^2y^2<br><br> A) 27xy<br> B) 3xy<br> C) 3xy√3<br> D) xy√27
iren2701 [21]

Answer:

\sqrt{27x^2y^2}=3xy\:\sqrt{3}

Hence, option C is correct.

Step-by-step explanation:

Given the expression

\sqrt{27x^2y^2}

simplifying the expression

\sqrt{27x^2y^2}=\sqrt{27}\sqrt{x^2}\sqrt{y^2}

Apply radical rule: \sqrt{a^2}=a,\:\quad \mathrm{\:assuming\:}a\ge 0

               =\sqrt{27}x\sqrt{y^2}

Apply radical rule: \sqrt{a^2}=a,\:\quad \mathrm{\:assuming\:}a\ge 0

                =\sqrt{27}xy

                =xy\sqrt{3^3}

                 =xy\sqrt{3^2\cdot \:\:3}

Apply radical rule: \sqrt{a^2}=a,\:\quad \mathrm{\:assuming\:}a\ge 0

                  =3xy\:\sqrt{3}

Therefore,

\sqrt{27x^2y^2}=3xy\:\sqrt{3}

Hence, option C is correct.

6 0
3 years ago
Which graph represents a quadratic function that has one real zero?
Naddika [18.5K]

Answer:

Step-by-step explanation:

Next time, please share the possible answer choices.

A quadratic function with one real zero actually has TWO real, identical zeros.  The vertex of the graph lies on the x-axis (touching it in only one place).

6 0
4 years ago
Kevin is 4 times as old as Daniel and is also 6 years older than Daniel
MAXImum [283]

Answer:

Part a) Daniel's age is 2 years

Part b) Kevin's age is 8 years

Step-by-step explanation:

<u><em>The question is </em></u>

Part a) How old is Daniel?

Part b) How old is Kevin?

Let

x ----> Kevin's age

y ----> Daniel's age

we know that

x=4y-----> equation A

x=y+6 ----> equation B

Equate equation A and equation B

4y=y+6

solve for y

4y-y=6

3y=6

y=2

therefore

Daniel's age is 2 years

<em>Find the value of x</em>

substitute the value of y in any of the two equations

x=4(2)=8\ years

x=2+6=8\ years

therefore

Kevin's age is 8 years

6 0
3 years ago
Factor 2x+2<br> PLEASE HELP
Alexandra [31]
If it’s a factor then it’s 2 but if your doing a expression then it is just 2x+2
7 0
3 years ago
Read 2 more answers
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