All categories

3 years ago

If 3 is added to twice a number the result is 17 find the number

2 answers:

7 0

For this, the number we are looking for is x.

use this formula... 17 - 3 = 2x

therefore, 14 is your doubled number.

14 divided by two is 7.

your mystery number is 7

Mekhanik [1.2K]3 years ago

4 0

$2x+3=17\\
2x=14\\
x=7
$

You might be interested in

A rectangular parcel of land has an area of 3,000 ft2. A diagonal between opposite corners is measured to be 10 ft longer than o

Kazeer [188]

Answer:

40 ft × 75 ft

Step-by-step explanation:

Let x be the one side ( in feet ) of the rectangular parcel,

So, the diagonal between opposite corners = ( x + 10 ) feet,

Let y be the other side of the rectangle ( adjacent to side x ),

The area of the rectangle,

A = x × y,

According to the question,

A = 3000 square ft,

$\implies xy = 3000\implies y=\frac{3000}{x}$

∵ In a rectangle,

$D^2=a^2+b^2$

Where, a and b are the adjacent side of the rectangle and D is the diagonal,

$(x+10)^2 = x^2 + y^2$

$(x+10)^2 = x^2 + \frac{9000000}{x^2}$

$x^2(x+10)^2 = x^4 + 9000000$

$x^2(x^2+100+20x) = x^4 + 9000000$

$x^4+100x^2 + 20x^3 = x^4 + 9000000$

$20x^3 + 100x^2 - 9000000=0$

$x^3 + 5x^2 - 450000 = 0$

By graphing the equation,

We found that,

The only real zeros of the equation is at x = 75,

Hence, the one side of the rectangle = 75 ft,

And, second side = $\frac{3000}{75}$ = 40 ft

Hence, the dimension of the land is 40 ft × 75 ft

3 0

3 years ago

Read 2 more answers

How many gallon jugs will 8 quarts fill?

vichka [17]

Answer:

The answer is 2 quarts!(:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

The equation of a line is y=-5/8x

Lesechka [4]

Answer:

B) slope of the line $\frac{-5}{8}$ ;Y- intercept is none

slope of the line $m = \frac{-5}{8}$

Y- intercept is none

Step-by-step explanation:

Explanation:-

Given equation of the line $y = \frac{-5}{8} x$

The equation of the straight line in slope - intercept form

y = m x + c

$y = \frac{-5}{8} x+0$

slope of the line $m = \frac{-5}{8}$

Y- intercept is none

6 0

3 years ago

Do u know shapes?? IF you do then plsss help

VLD [36.1K]

Answer:

what that shape is a Quadrilateral rectangle square and i think thats it

Step-by-step explanation:

i big brain

5 0

3 years ago

A school band consist of 45 boys and 50 girls. Of the total number of boys, 18 play the drums. What percent of the boys in the b

8_murik_8 [283]

That would be 8.1 if you divide

3 0

3 years ago

Read 2 more answers