2 years ago

when a natural number is decreased by 20,the result is 96 times the reciprocal of the number.find the number

Mathematics

1 answer:

olga2289 [7]2 years ago

5 0

Answer:

let natural no be x

(x-20)=96/x

x²-20x-96=0

x²-24x+4x-96=0

x(x-24)+4(x-24)=0

(x-24)(x+4)=0

either

x=24

x=-4

You might be interested in

Sarah drives her car 180 miles in 225 minutes.What is her average speed in miles per hour?

lukranit [14]

Speed = distance ÷ time

6 0

2 years ago

Read 2 more answers

270 is 90% of what number?

kakasveta [241]

$90\% \ of \ x =270 \\\\ \frac{90}{100}*x=270 \\\\ \frac{9}{10}=\frac{270}{x} \\\\ x=\frac{10*270}{9} \\\\ x=10*30 \\\\ \boxed{x=300}$

6 0

3 years ago

Find the solutions of the quadratic equation -9c² +2 +3 = 0.

Tresset [83]

Given that,

An equation : -9c² +2c +3 = 0

To find,

Find the value of x.

Solution,

We have, -9c² +2c +3 = 0

We can solve it using the formula as follows :

$x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

Here, a = -9, b = 2 and c =3

Put the values,

$c=\dfrac{-2\pm \sqrt{(2)^2-4(-9)(3)}}{2(-9)}\\\\c=\dfrac{-2+\sqrt{(2)^{2}-4(-9)(3)}}{2(-9)}, \dfrac{-2-\sqrt{(2)^{2}-4(-9)(3)}}{2(-9)}\\\\c=-0.47, 0.69$

So, the solution are -0.47 and 0.69.

8 0

2 years ago

Help please!<br>If you know geometry please help!<br>

tamaranim1 [39]

50+50=100

180-100=80

X=80

4 0

2 years ago

PLS HELP I NEED IT RIGHT NOW

oksian1 [2.3K]

I can’t really see it but it looks like 1

8 0

2 years ago

when a natural number is decreased by 20,the result is 96 times the reciprocal of the number.find the number​

when a natural number is decreased by 20,the result is 96 times the reciprocal of the number.find the number