The formula for the speed of a tsunami in deep water is v=gh−−√ , where g is acceleration due to gravity, 9.8 m/s2 , and h is the depth of the ocean in meters. Use this formula to estimate the speed at which the tsunami that started with an earthquake in Sumatra struck Sri Lanka about 1550 km away. The Bay of Bengal is 4 km (4000 m) deep.

Step-by-step explanation:

This is a common knowledge of equivalent fractions.

Multiplying both the numerator and denominator of a fraction by the same quantity does not change the value of the fraction.

Not only multiplication, but division also works. What ever operation performed on the numerator must also be performed on the denominator.

1/2 = 2/4 = 4/8 = 16/32

Answer:

4x^3 + 18x^2 - 10x.

Step-by-step explanation:

(c.d)(x) = (4x - 2)(x^2 + 5x)

= 4x^3 + 20x^2 - 2x^2 - 10x

= 4x^3 + 18x^2 - 10x.

Answer:

168miles

Step-by-step explanation:

if it travels 126 miles in 3 hours

then in 1 hour it travels 126÷3 = 42miles

4 hours= 4×42= 168 miles

Answer:

At 15:15

Step-by-step explanation:

Given,

the 1st boy can run a lap in 15 minutes

the 2nd boy can run a lap in 25 minutes

the 3rd boy can run a lap in 10 minutes

Now if they start running at 12:45,they will meet after the time which will be equal to the L.C.M. of their time need to run a lap.

[tex]L.C.M.[/tex] of 15,25 & 10 = 150

So,they will pass each other after 150 minutes or 2 hours & 30 minutes.

If we add it with 12:45 we'll get 15:15 or 3:15 pm

=x3−3x2+7x−3

your answer is B

Answer:

a

Step-by-step explanation:

Precision means that a measurement using a particular tool or implement produces similar results every single time it is used. For example, if you step on a scale five times in a row, a precise scale would give you the same weight each time. In math and science, calculating precision is essential to determine if your tools and measurements work well enough to get good data. You can report precision of any data set using the range of values, the average deviation, or the standard deviation.

Hi there! :)

Answer:

[tex]\huge\boxed{v = -5}[/tex]

-8v + 3(v - 3) = 16

Distribute the 3:

-8v + 3(v) + 3(-3) = 16

-8v + 3v - 9 = 16

Combine like terms and simplify:

-5v - 9 = 16

-5v - 9 + 9 = 16 + 9

-5v = 25

Divide both sides by -5:

-5v/(-5) = 25/(-5)

v = -5.

Answer:

θ = 54 - π/10 - (2 π n_1)/5 for n_1 element Z

or θ = -18 - π/10 - (2 π n_2)/5 for n_2 element Z

Step-by-step explanation:

Solve for θ:

sin(90 - 5 θ) = cos(180)

Hint: | Express the right hand side in terms of sine.

Rewrite the right hand side using cos(θ) = sin(θ + π/2):

sin(90 - 5 θ) = sin(π/2 + 180)

Hint: | Eliminate the sine from the left hand side.

Take the inverse sine of both sides:

90 - 5 θ = -180 + π/2 + 2 π n_1 for n_1 element Z

or 90 - 5 θ = 180 + π/2 + 2 π n_2 for n_2 element Z

Hint: | Look at the first equation: Isolate terms with θ to the left hand side.

Subtract 90 from both sides:

-5 θ = -270 + π/2 + 2 π n_1 for n_1 element Z

or 90 - 5 θ = 180 + π/2 + 2 π n_2 for n_2 element Z

Hint: | Solve for θ.

Divide both sides by -5:

θ = 54 - π/10 - (2 π n_1)/5 for n_1 element Z

or 90 - 5 θ = 180 + π/2 + 2 π n_2 for n_2 element Z

Hint: | Look at the second equation: Isolate terms with θ to the left hand side.

Subtract 90 from both sides:

θ = 54 - π/10 - (2 π n_1)/5 for n_1 element Z

or -5 θ = 90 + π/2 + 2 π n_2 for n_2 element Z

Hint: | Solve for θ.

Divide both sides by -5:

Answer: θ = 54 - π/10 - (2 π n_1)/5 for n_1 element Z

or θ = -18 - π/10 - (2 π n_2)/5 for n_2 element Z

Answer:

2.44948974278

sqrt(6)

Answer:

22

Step-by-step explanation:

Answer:

27 Chickens

Step-by-step explanation:

Represent the chicken with A and the cows with B

Given

[tex]A + B = 30[/tex]

A has 2 legs and B has 4; So:

[tex]2A + 4B = 66[/tex]

Required

Determine A and B

Make B the subject of formula in the first equation

[tex]B = 30 - A[/tex]

Substitute 30 - A for B in the second equation

[tex]2A + 4(30 - A) = 66[/tex]

Open the bracket

[tex]2A + 120 - 4A = 66[/tex]

Collect Like Terms

[tex]2A - 4A = 66 - 120[/tex]

[tex]-2A= -54[/tex]

Divide through by -2

[tex]A = 27[/tex]

Hence, the farmer has 27 chickens

Answer:

Hey!

Your answer is that 0.000000000000002 IS WRITTEN LIKE THIS IN SCIENTIFIC NOTATION : 2 × 10^-15  ( ^ means 'to the power of...')

Step-by-step explanation:

THERE ARE OTHER WAYS TOO!

2e-15 (scientific e notation)

BUT THE FIRST ONE I GAVE TO YOU WILL BE THE BEST!!

HOPE THIS HELPS!!

Answer:

2 × 10^-15

Step-by-step explanation:

Answer:

The answer is B(s*12=96)

Answer:

Step-by-step explanation:

The first thing you have to do, is rewrite the given expression

[tex]Ar^{-2} = \frac{A}{r^{2} }[/tex]

Then you plug in the given values

[tex]\frac{A}{r^{2} } = \frac{50.265}{4^{2} }[/tex]

Finally you simplify

[tex]\frac{50.265}{4^{2} }=\frac{50.265}{16} = 3.142[/tex]

Answer:

-4

Step-by-step explanation:

We are given the expression:

[tex]x-5[/tex]

and asked to evaluate for x=1. Therefore, we must substitute 1 in for x.

[tex]x-5, x=1[/tex]

[tex]1-5[/tex]

Perform the operation. Subtract 5 from 1.

[tex]-4[/tex]

The expression x-5 when evaluate for x=1 is equal to -4.

Answer:

A) x = -4

Step-by-step explanation:

[tex]3x-2\left(6-x\right)=7x+2\left(5+x\right)-6\\\\\mathrm{Expand\:}3x-2\left(6-x\right):\quad 5x-12\\\\\mathrm{Expand\:}7x+2\left(5+x\right)-6:\quad 9x+4\\5x-12=9x+4\\\\\mathrm{Add\:}12\mathrm{\:to\:both\:sides}\\5x-12+12=9x+4+12\\\\Simplify\\5x=9x+16\\\\\mathrm{Subtract\:}9x\mathrm{\:from\:both\:sides}\\5x-9x=9x+16-9x\\\\Simplify\\-4x=16\\\\\mathrm{Divide\:both\:sides\:by\:}-4\\\frac{-4x}{-4}=\frac{16}{-4}\\\\Simplify\\x=-4[/tex]

Answer:

2

Step-by-step explanation:

First let’s add the x, y into the fraction.

16/4(2)

Now simplify,

16/8=

2/1=

2

Answer:

C. Circle X, circle Z, circle Y

Step-by-step explanation:

Given

Circles X, Y and Z

Required

Order from greatest to highest

First, we need to simplify the given areas;

For Circle X

[tex]A = 9\pi[/tex]

Take [tex]\pi[/tex] as 3.14

[tex]A = 9 * 3.14[/tex]

[tex]A = 28.26[/tex]

For Circle Y

[tex]A = \frac{\sqrt3}{2}[/tex]

This gives

[tex]A = \frac{1.732}{2}[/tex]

[tex]A = 0.866[/tex]

For Circle Z

[tex]A = 27.5[/tex]

By comparing the above areas;

X has the largest area; followed by Z and then Y

Hence,

option C answers the question

Answer:

x,z,y

Step-by-step explanation:

Answer:

1728

Step-by-step explanation:

[tex]3 \times 3 \times 3 \times 4 \times 4 \times 4 \\ [/tex]

[tex] = > {3}^{3} \times {4}^{3} [/tex]

As both 3 & 4 have same exponent , the bases will get multiplied with exponent as 3.

[tex] = > {(3 \times 4)}^{3} [/tex]

[tex] = > {12}^{3} = 1728[/tex]

1728 is the value of  3x3x4x4x3x4

A number system is defined as a system of writing to express numbers.

The given expression is  3x3x4x4x3x4

The operator in the given expression is multiplication.

Which is also know as product

Multiplication is a method of finding the product of two or more numbers

3x3x4x4x3x4 can be written in exponent form.

As three is multiplied three times we can take as 3³

four  is multiplied three times we can take as 4³

So 3³×4³

27×64

1728

Hence, 1728 is the value of  3x3x4x4x3x4

To learn more on Number system click:

https://brainly.com/question/22046046

#SPJ2

Answer:

-2

Step-by-step explanation:

Answer:

k=-2

Step-by-step explanation:

isolate the viarable by dividing each side by factors that  contain the  variable

Answer:

A: irrational

B: whole number

C: rational

D: irrational

E: natural

F: irrational

G: integer

H: irrational

I: rational

J: irrational

K: rational

Answer:

The correct answer is C hope this helps :)

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

all is correct but from 2 to 3 you add +4 to both sides

Answer:

The anwser I got was 59.7

Step-by-step explanation:

I am in 7th grade so I most likley got the wrong anwser but Multipled 3.98 by 15 and got 59.7

Answer:

[tex]-2\sqrt{3}[/tex]

Step-by-step explanation:

[tex]5\sqrt{27} -17\sqrt{3} =5*3\sqrt{3} -17\sqrt{3}[/tex]

[tex]=15\sqrt{3} -17\sqrt{3}[/tex]

=[tex]-2\sqrt{3}[/tex]

Answer:

35

Step-by-step explanation:

Order of Operations: BPEMDAS

Step 1: Write out expression

3 + 2(13 - 17)²

Step 2: Parenthesis subtraction

3 + 2(-4)²

Step 3: Exponent

3 + 2(16)

Step 4: Parenthesis multiplication

3 + 32

Step 5: Add

35