20 percent of what number is 14

Answers

Answer 1
Answer:  14 = 20%
  x = 100%

20x = 14 . 100
20x = 1400
   x = 1400 
           20
   x = 70

S = 20% of 70 is 14.
Answer 2
Answer:

20 percent of 70 number is 14.

Here we have to find,

The number of which 20 percent is 14

Le the number = x

Now divide 20 by 100

20% = 20/100

       = 0.20

Now multiply 0.20 with x we get,

⇒ 0.20x

Now equate it tp 14 we get,

⇒ 0.20x = 14

⇒         x = 14/0.20

              = 70

Hence,

The number is 70.

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Using the completing-the-square method, find the vertex of the function f(x) = –2x2 + 12x + 5 and indicate whether it is a minimum or a maximum and at what point.. .

Answers

f ( x ) = - 2 x² + 12 x + 5 = - 2 ( x² - 6 x ) + 5 = - 2 ( x² - 6 x + 9 - 9 ) + 5 =
- 2 ( x² - 6 x + 9 ) + 18 + 5 = - 2 ( x - 3 )² + 23 
f ( x ) = a ( x - k )² + h ( the vertex form ), k = 3, h = 23. 
a = - 2 < 0, that means the vertex coordinates ( 3, 23 ) represents a maximum.

Answer:

3,23 maximum

Step-by-step explanation:

Robert's father is 4 years older than 3 times Robert's age. His father is 40 years old. Write the equation used to determine Robert's age.

Answers

Robert is 12 years old. The equation 40 = 3R + 4 was used to determine Robert's age based on the given information about his father's age being 40 and the age relationship between them.

We can set up an equation to represent the given information. Let's denote Robert's age as "R" and his father's age as "F." According to the information provided, we have:

F = 3R + 4

Given that Robert's father is 40 years old (F = 40), we can substitute this value into the equation:

40 = 3R + 4

Now, solve for Robert's age (R):

3R = 40 - 4

3R = 36

R = 36 / 3

R = 12

Therefore, Robert is 12 years old. The equation 40 = 3R + 4 was used to determine Robert's age based on the given information about his father's age being 40 and the age relationship between them.

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Answer:

robert is 12 years old

Step-by-step explanation:

robert's age=x

40=3x+4

that's the equation

40=3x+4

=36=3x

x=12

a. Find the value of each variable to the nearest tenth. B. Find the perimeter of the triangle to the nearest tenth. 1.A = 30.0, c = 36.6, perimeter = 87.6 2. a = 17.2, c = 36.6, perimeter = 74.8 3. a = 36.6, c = 17.2, perimeter = 74.8 4. a = 36.6, c = 30.0, perimeter = 87.6

Answers

Answer:

a = 30.0, c = 36.6, perimeter = 87.6 - this is what I got for my answer so I hope this helps

Answer:

your answer is A

Step-by-step explanation:

Gradpoint

One year British columbia had 6149 police officers and a total population of 3282000 Nova scotia had 1542 police officers and a total population of 900000 which province had the greater number of people per police officer

Answers

Answer: Nova Scotia

Step-by-step explanation:

British Columbia people per police officer:

= Population number / no. Of policemen

= 3,282,000/6,149

= 534 people per policeman

Nova Scotia

= 900,000 / 1,542

= 584 people per policeman

Tourist: "How many birds and lions do you have in your zoo?" Zookeeper:"There are 30 heads and 100 feet." Find the number of each animal. I need to know how to set this problem up in a system of linear equations. Thank you.

Answers

Each lion has 1 head.  The number of lion heads is L .
Each bird has 1 head.  The number of bird heads is B.
The total number of heads of all species is (L + B) = 30

Each lion has 4 feet.  The number of lion feet is 4L .
Each bird has 2 feet.  The number of bird feet is 2B .
The total number of feet of all species is (4L + 2B) = 100

The system of linear equations is:

         L +   B =  30
       4L + 2B = 100 .

SAT HelpJack can paint a house in 5 days, and Richard can paint the same house in 7 days. Working together, how long will it take them to finish the job?

How do you solve this?

Answers

Well, their speeds are (V_1 is Jack's speed, and V_2 is Richard's.
V_1 = (1)/(5) houses/day \n V_2 = (1)/(7) houses/day \n V = V_1 + V_2 = (1)/(5)+(1)/(7) = (7+5)/(35) = (12)/(35)
They, together, can paint 12 houses in 35 days. To get a single house, we only have to calculate (35)/(12) which is very close to 3 (a bit below)

Answer:

In 7*5 = 35 days, Jack can paint 7 houses.

In 5*7 = 35 days, Richard can paint 5 houses.

So in 35 days, the two of them can paint 12 houses. To paint just one house, they'll need 1/12 the time, or 35/12 = 2 11/12 days.

Step-by-step explanation: