14.4% of what number is 10.4

Answers

Answer 1
Answer: First, convert "of" to x and put this info into an equation:

Let n represent the unknown number.  

14.4 % x n= 10.4
              n = 10.4 / 14.4%
              n = 72.22222
              n = ~72

Hope this helps!

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265000 in standard form

Answers

Answer:

2.65×10^5

Step-by-step explanation:

Answer:

2.65 \cdot 10^5

Step-by-step explanation:

265000 can be rewritten as 2.65 \cdot 10^5, since the decimal place moved 5 to the left. Hope this helps!

Solve the following equation: 3x - 7 = 9 + 2x.
A)12
B)16
c)20
d)24

Answers

answer:
B

the equation:
3x-7=9+2x

step 1: subtract 2x from both sides
x-7=9

step 2: add 7 to both sides
x=16

Answer:

Option B

Step-by-step explanation:

3x - 7 = 9 + 2x\n\n3x-7+7=9+2x+7\n\n3x = 9 + 7 + 2x\n\n3x=16+2x\n\n3x-2x=16+2x-2x\n\n\boxed{x=16}

Hope this helps!

The length of a square is 16m, what is the breadth of the square​

Answers

Answer:

The breadth is 16m because a square is a quadrilateral (four sided shape) that has all its side to be of equal measure.

Identify the number that is 9.5 units from 2 on a number line

Answers

There are two such numbers.

One of them is 2 + 9.5 = 11.5.

The other one is 2 - 9.5 = -7.5.

_____

If we consider "9.5 units from 2" to be 9.5 units in the positive direction, then the appropriate choice is 11.5.

\boxed{\large{\bold{\blue{ANSWER~:) }}}}

we have to find the number that is 9.5 units from 2 on a number line

Ithas2typesofnumber

such as:

  • 2+9.5=11.5
  • 2-9.5=-7.5

we can represented it on the number line

(See this attachment)

Simplify: (3²-4)/5
A. 1
B. 1.25
C. 1/5
D. 5​

Answers

Answer:

A is the correct answer

Step-by-step explanation:

(9 -4)/ 5

5/5

=1

the answer to this question is A. 1

A rocket is launched upward so that its distance, in feet, above the ground after t seconds is represented by the function below. What is its maximum height? h(t)=−16t2+320t

Answers

Answer: 1600 feet.

Step-by-step explanation:

Given : A rocket is launched upward so that its distance, in feet, above the ground after t seconds is represented by the function h(t)=-16t^2+320t

To find : its maximum height.

First we differentiate the given function , we get

h'(t)=(2)(-16)t+320=-32t+320

Put  h'(t)=0, we get

-32t+320=0\n\n\Rightarrow\ t=(-320)/(-32)=10

Hence, at t=10 , rocket achieves its maximum height.

\text{Maximum Height =}h(t)=-16\left(10\right)^(2)+320\left(10\right)\n\n=-1600+3200=1600

Hence, its maximum height = 1600 feet.

Answer:

1600 ft

Step-by-step explanation:

We are given that a rocket is a launched upward so that its distance(feet) above the ground after t seconds is represented by the function

h(t)=-16t^2+320t

We have to find the maximum height.

Substitute h(t)=0

-16t(t-20)=0

t=0,t-20=0\implies t=20

When t=0 it means the rocket is at ground launch.

When t= 20 s.

Total time taken by rocket=20 s.

Half of the time taken to reach maximum height and half of the time taken to reach ground  back.

Therefore, time taken by rocket to reach maximum height=(20)/(2)=10s

Substitute t=10 in given function

Then we get

h(10)=-16(10)^2+320(10)=-1600+3200=1600 ft[/tex]

Hence, the maximum height=1600 ft