At 5.45p.M .,lixin,khairul and Devil are at the starting point of a 1-km circular path. Lixin Takes 18 minutes to walk one round ,khairul needs 360 seconds to run 1 round ansd Devi cycles 2 rounds in 4 minutes .Find the time when all three of them will next meet

Answer:

[tex] 18 \%\: of \: x = 63 \\ \frac{18}{100} x = 63 \\ x = \frac{63 \times 100}{18} \\ x = 350[/tex]

Answer:

350

Step-by-step explanation:

To figure out the number, divide 63 by 18%

63/0.18 = 350

You can check by doing the opposite operation with your answer:

350 · 0.18 = 63

Answer:

2 looks good  I & IV

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Answer: x=-30

Step-by-step explanation: -1/5x(-5)=6(-5) x=-30

I cant see the image very well. Could you explain your question?

Answer:

The answer is C

I did the quiz on edge

Answer:

Step-by-step explanation:

Let the number of nickels be n and dimes be d.

Consider:

We have equations below:

Multiply the first equation by 10 and subtract the second equation to eliminate d and solve for n:

He has 50 nickels

9514 1404 393

Answer:

  A

Step-by-step explanation:

The law of sines tells you the sine of the angle is proportional to the length of the opposite side. The usual convention is that 'a' is opposite 'A', and the same for other letters.

Answer:

3 1/5 inches

Step by Step Explanation:

4/5 * 4 = 16/5

16/5 as a mixed number is 3 1/5.

The answer is 3 1/5 inches hope this helps!!

Answer:

i would say 3  1/5

Step-by-step explanation

Answer: $3,000.

Step-by-step explanation: The 10% of $15,000 is %1,500, so the value of the car drops by $1,500 each year. So, in eight years (8 years x $1,500), the value will drop by $12,000. Therefore, the price of the car in eight years will be the original amount minus the depreciating amount ($15,000 - $12,000), this will be $3,000.

Answer: 390 miles

Step-by-step explanation:

Reggie ran for half an hour in the morning and half an hour in the evening.

That is a total of 1 hour for the day.

He runs 6.5 miles in one hour.

In 60 days he would have ran;

= 60 * 6.5

= 390 miles

Answer:

The answer is "-21.6".

Step-by-step explanation:

In the given question, there is a mistype in the equation so, its correct equation can be defined as follows:

Given:

[tex]\to (-9) (2 \ and \ 2/5) = (-9)(2+ \frac{2}{5})[/tex]

                              [tex]= (-9 \times 2 )+ (-9\times \frac{2}{5})\\\\= (-18 )+ ( -\frac{18}{5})\\\\= -18 -\frac{18}{5}\\\\= \frac{-90-18}{5}\\\\= - \frac{108}{5}\\\\=- 21.6[/tex]

OR

[tex]\to (-9)(2+ \frac{2}{5})= (-9) (\frac{10+2}{5})[/tex]

                       [tex]= (-9) (\frac{12}{5})\\\\= (-9) (2.4)\\\\=-21.6[/tex]

Answer:

The width of rectangle w = 4 units

Step-by-step explanation:

We are given:

Width of rectangle = w

Length of rectangle = w+ 4

Area of rectangle = 32 units

We need to find width of the rectangle

The formula used is: [tex]Area\:of\:rectangle=Length\times Width[/tex]

Putting values and finding width of rectangle

[tex]Area\:of\:rectangle=Length\times Width\\32=(w+4)\times w\\32=w^2+4w\\w^2+4w-32=0[/tex]

We need to solve this quadratic equation to find width (w)

We will use factorisation and break the middle term.

[tex]w^2+4w-32=0\\w^2+8w-4w-32=0\\w(w+8)-4(w+8)=0\\(w-4)(w+8)=0\\w-4=0\:or\:w+8=0\\w=4\:or\:w=-8[/tex]

Since width of rectangle can't be negative, so rejecting w=-8

Therefore, the width of rectangle w = 4 units

Answer:

B. 13.2 m

Step-by-step explanation:

Using the Pythagorean theorem, which is a^2 + b^2 = c^2, you can substitute in 9 for a and 16 for c. This puts it at 9^2 + b^2 = 16^2, which equals 81 + b^2 = 256. Subtract 81 from both sides to get b^2 = 175. Take the square root of both sides to get b = sqrt 175. The sqrt of 175 rounded to the nearest tenth is 13.2

Answer:

area is 13.7^2

Step-by-step explanation:

7×12=84

84÷2=42

sin(19°)=0.3256

42×0.3256=13.7

Answer:

the area is 13.7^2

Step-by-step explanation:

can you please add me on brainlist

Answer:

it is correct step

Step-by-step explanation:

it has no wrong in it b/c it subtract 1x from both side

Do you mean [tex]f(x)=-3^{\sqrt x}[/tex], as in the negative of 3 to the power of √x ? Or [tex]f(x)=-\sqrt[3]{x}[/tex], as in the negative cube root of x ?

If you mean [tex]f(x)=-3^{\sqrt x}[/tex], then, going through each option:

• no: the square root component is defined only for x ≥ 0, for which we have √x ≥ 0 and hence f(x) < 0 for all x in the domain. √x is an increasing function, so the powers of 3 get successively larger, so f(x) would be always decreasing;

• no: as mentioned above, the domain would be all non-negative numbers;

• no: at minimum, x = 0 which gives f (0) = -3⁰ = -1, and because f(x) is decreasing over its entire domain, the range would be {y | y ≤ -1};

• no: again, a bit of ambiguity, but assuming you mean to say here [tex]y=3^{\sqrt x}[/tex], yes, f(x) would be a reflection of y across the x-axis;

• and finally, no: [tex]f(3)=-3^{\sqrt3}\approx-6.705[/tex]

so that only the fourth option would be true.

On the other hand, if you mean [tex]f(x)=-\sqrt[3]{x}[/tex], then:

• no: the function is always decreasing;

• yes: the domain is all real numbers;

• yes: the range is {y | -∞ < y < ∞};

• yes: f(x) is a reflection of y=∛x, also about the x-axis; and

• no: f (3) = -∛3 ≈ -1.442

I suspect you mean the second case, since it's a bit simpler to approach.

Answer:

b,c,d

Step-by-step explanation:

Just took the test

Answer:

happy new year

Answer:

1a. y = $10 + $5x (With $10 as the flat fee, Company A charges $5 an hour, so the equation should be $10, base, plus $5x, the amount charged after you paid the flat fee.)

1b. y = $7x (Every hour $7 translates to $7x as the total. Nothing more, nothing less.)

1c. Substitution (This will allow us to substitute in one of the equations with y, since the question asks for the same amount charged, with the other equation.)

1d. $10 + $5x = $7x

    $7x - $5x = $10

    $2x = $10

    x = [tex]\frac{\$10}{\$2}[/tex]

    x = 5

Therefore, after 5 hours, both companies charge $35 dollars.

1e. To check whether this is correct, let's sub in the amount of hours for both equations.

For Company A:

y = $10 + $5x

y = $10 + $5(5)

y = $35

For Company B:

y = $7x

y = $7(5)

y = $35

Since both are equal to $35, we can definitively say the answer is 5 hours.

Step-by-step explanation:

Hope this helped!

Answer:

768 numbers

Step-by-step explanation:

Given

[tex]Digits = \{0,1,2,3,4,5,6,7,8,9\}[/tex]

Required

Number of digits between 0 ad 9999 that have one 1 and one 3

There are a total of 4 digits that make up any of the numbers in 0 to 9999 with the given condition

This can be represented as WXYZ

The remaining 8 digits will occupy the last 2 positions in the following ways:

So, the total number of selection is:

[tex]Total = 4 * (4 - 1) * 8 * 8[/tex]

[tex]Total = 4 * 3 * 8 * 8[/tex]

[tex]Total = 768[/tex]

Answer:

p < 16

Step-by-step explanation:

-3p > -48

Divide both sides by -3. Remember to change the direction of the inequality sign when you multiply or divide by a negative number.

-3p/(-3) < -48/(-3)

p < 16

Answer: p < 16

Answer:

X=9

Step-by-step explanation:

X/ Y=X/Y

3/18=x/54

next is simple math

X=9

Answer: 3 - 7 x 4

Step-by-step explanation:

7 - 3 = 4 x 4 = 16

Answer:

dividend

Step-by-step explanation:

Answer:

104.7 in^3

Step-by-step explanation:

Step one:

given data

The ball has a radius of 5 inches and

the cylinder has a height of 8 inches

Step two:

The volume of the cylinder

[tex]v= \pi r^2 h[/tex]

substitute our data

[tex]v= 3.142*5^2*8\\\\v=628.4in^3[/tex]

The volume of the ball

[tex]v=4/3 \pi r^3[/tex]

substitute our data

[tex]v= 4/3 *3.142*5^3\\\\v= 523.7 in^3[/tex]

The space will have a volume of

=628.4-523.7

=104.7 in^3

Answer:

(3,2)

Step-by-step explanation:

3,2 is the answer...hope you can understand

The point which is the solution of the inequality y ≤ 2x - 4 is,

⇒ (3, 2)

A pair of numbers which describe the exact position of a point on a cartesian plane by using the horizontal and vertical lines is called the coordinates.

We have to given that;

The inequality is,

⇒ y ≤ 2x - 4

Now, From the options;

Option 3;

Point = (3, 2)

Put x = 3, y = 2;

⇒ y ≤ 2x - 4

⇒ 2 ≤ 2 × 3 - 4

⇒ 2 ≤ 6 - 4

⇒ 2 ≤ 2

Thus, The point which is the solution of the inequality y ≤ 2x - 4 is,

⇒ (3, 2)

Learn more about the coordinate visit:

https://brainly.com/question/24394007

#SPJ7

0.048

If i am wrong let me know

Note: I am assuming you meant to write the value of y = 12 instead of w = 12.

So, I am assuming y = 12

Answer:

The value of 13 - 0.75y + 8x when we substitute y = 12 and x = 1/2 will be: 8

Step-by-step explanation:

Given the expression

[tex]13\:-\:0.75y\:+\:8x[/tex]

Given

substituting y = 12 and x = 1/2 in the expresion

[tex]13\:-\:0.75y\:+\:8x=13\:-\:0.75\left(12\right)\:+\:8\left(\frac{1}{2}\right)[/tex]

                            [tex]=13-0.75\cdot \:12+8\cdot \frac{1}{2}[/tex]

                             [tex]=13-9+4[/tex]

                             [tex]=8[/tex]

Therefore, the value of 13 - 0.75y + 8x when we substitute y = 12 and x = 1/2 will be: 8