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2 years ago

What % of 15 = 12?????????????????

Mathematics

2 answers:

olga2289 [7]2 years ago

7 0

Answer:

Step-by-step explanation:

15 percent of what number is 12?

12 is 15% of 80

Steps to solve "12 is 15 percent of what number?"

We have, 15% × x = 12

or,

100

× x = 12

Multiplying both sides by 100 and dividing both sides by 15,

we have x = 12 ×

100

x = 80

If you are using a calculator, simply enter 12×100÷15, which will give you the answer.

Ivan2 years ago

7 0

Answer:

80.

Step-by-step explanation:

Hope it helps

my first answer was 125% but then I realised I seen the wrong number sorry my eyes are not very good lol

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Solve the equation below for x. 100 = 25e3 In4 O A. 4 B. 3 e O C. X=In4 - 3 c In100 3. In25 O D.

Ray Of Light [21]

Dividing the given equation by 25 we get:

$\begin{gathered} \frac{100}{25}=\frac{25e^{3x}}{25}, \\ 4=e^{3x}\text{.} \end{gathered}$

Applying the natural logarithm to the above equation we get:

$\ln (4)=\ln (e^{3x})=3x\ln (e)=3x\text{.}$

Finally, solving for x we get:

$x=\frac{\ln (4)}{3}\text{.}$

Answer: Option A.

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1 year ago

The function g is given in three equivalent forms. Which form most quickly reveals the vertex?

Nadusha1986 [10]

Answer:

Option A. $g(x)= \frac{1}{2}(x-8)^2-8$

Step-by-step explanation:

The complete question is

The function g is given in three equivalent forms.

Which form most quickly reveals the vertex?

A)g(x)= 1/2(x-8)^2-8

B)g(x)= 1/2(x-12)(x-4)

C)g(x)= 1/2x^2-8x+24

we know that

The equation of a quadratic function in vertex form is equal to

$y=a(x-h)^2+k$

where

a is the leading coefficient

(h,k) is the vertex of the function

In this problem, the option A is the equation of the function in vertex form

we have

$g(x)= \frac{1}{2}(x-8)^2-8$

where the vertex is the point (8,-8)

therefore

Option A

8 0

3 years ago

Leonhard wants to place a triangular-based cabinet in the corner of his rectangle-shaped living room. The triangular base has a

Illusion [34]

Answer: The answer is $(A)~~x=\dfrac{-7+\sqrt{193}}{4}.$

Step-by-step explanation: Given that Leonhard wants to place a triangular based cabinet in the corner of his room which is rectangular in shape.

The base and height of the triangular cabinet are

$b=(2x+3)~\textup{feet},\\\\h=(3x+6)~\textup{feet}.$

Therefore, area of the triangular cabinet is given by

$a=\dfrac{1}{2}\times b\times h=\dfrac{1}{2}(2x+3)(3x+6)~\textup{sq. feet.}$

Now, the length and breadth of the rectangular room are 30 feet and 20 feet respectively. Therefore, the area of the room is given by

$A=30\times 20=600~\textup{sq. feet.}$

According to the question,

$a=6\%\times A\\\\\Rightarrow \dfrac{1}{2}(2x+3)(3x+6)=\dfrac{6}{100}\times 600\\\\\Rightarrow (2x+3)(3x+6)=24\times 3\\\\\Rightarrow (2x+3)(x+2)=24\\\\\Rightarrow 2x^2+7x-18=0\\\\\Rightarrow x=\dfrac{-7\pm\sqrt{7^2-4\times 2\times(-18)}}{2\times 2}\\\\\\\Rightarrow x=\dfrac{-7\pm\sqrt{193}}{4}.$

Since the length of something cannot be negative, so the value of 'x' is

$x=\dfrac{-7+\sqrt{193}}{4},$

because if we take the other value of 'x', the values of (2x+3) and (3x+6) will become negative which is not possible.

Thus, (A) is the correct option.

5 0

3 years ago

Plz help number 3d ( can you pls show ur steps of how you got the answer)

denis23 [38]

Answer:

$(\frac{13}{16},-\frac{3}{8})$

Step-by-step explanation:

Midpoint of a segment with the given endpoints $(x_1,y_1)$ and $(x_2,y_2)$ is defined by,

$(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

In this question endpoints of the segment are,

$Q(-\frac{3}{8},\frac{1}{8})$ and $R(2,-\frac{7}{8})$

Coordinates of the midpoint will be,

$(\frac{-\frac{3}{8}+2}{2},\frac{\frac{1}{8}-\frac{7}{8}}{2})$

= $(\frac{13}{16},-\frac{3}{8})$

Therefore, coordinates of the midpoint are $(\frac{13}{16},-\frac{3}{8})$ .

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3 years ago

Consider the two groups listed below. Which statement describes the sets?

d1i1m1o1n [39]

The correct answer is:

C. Both (house, complete mailing address) and (complete mailing address, house) are functions.

Explanation:

A function is a relation in which each element of the domain (x-values) is mapped to one element of the range (y-values).

In the set (house, complete mailing address), the values of "house" would be the domain and the values of "complete mailing address" would be the range. In order to be a function, each value of "house" would be mapped to only one value of "complete mailing address." This is true; each house will have only one complete mailing address. This means it is a function.

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4 0

3 years ago

Read 2 more answers