Is the number 4.277777777... rational or irrational

Mathematics

1 answer:

DanielleElmas [232]3 years ago

6 0

Answer:

Irrational

Step-by-step explanation:

If it cant be written as a fraction or has 0 as a denominator its irrational

You might be interested in

Solve for x to the nearest 10th.<br> 410 = 1080(0.915)^x

Hunter-Best [27]

Answer:

410/1080=(0.915)^x

0.379=(0.915)^x

ln0. 379/ln0.915=x

X=10.903

4 0

3 years ago

6.4x+2.8y=44.4, when x=3

ANEK [815]

6.4x + 2.8y = 44.4

6.4(3) + 2.8y = 44.4

19.2 + 2.8y = 44.4
-19.2 -19.2

2.8y = 25.2
------ ------
2.8 2.8

y = 9

7 0

4 years ago

Read 2 more answers

6(y+1.5)=18<br> what does y equals?

leva [86]

Answer:

Step-by-step explanation:

6y+9=18

6y=2

y=1/3

3 0

3 years ago

Read 2 more answers

Need some help with this please

saveliy_v [14]

-0.83 for it’s the lowest number

5 0

3 years ago

A mass weighing 3 lb stretches a spring 3 in. If the mass is pushed upward, contracting the spring a distance of 1 in and then s

Bas_tet [7]

Answer:

Step-by-step explanation:

$m=\frac{3}{32}\\ \gamma =0\text{ damping constant.}\\ k=\frac{3}{\frac{1}{4}}=12\\ F(t)=0\\ \text{so equation of motion is }\\ mu''+\gamma u'+ku=F(t)\\ \frac{3u''}{32}+12u=0\\ u''+128u=0\\ \text{and initial conditions are}\\ u(0)=-\frac{1}{12}\\ u'(0)=2\\ u''+128u=0\\ \text{characterstic equation is}\\ r^2+128=0\\ \text{roots are }\\ r=\pm 8\sqrt{2}i\\ \text{therefore general solution is}\\ u(t)=A\cos8\sqrt{2}t+Bsin8\sqrt{2}t\\ \text{using initial conditions we get}\\ A=-\frac{1}{12}\\ B=\frac{\sqrt{2}}{8}\\ \text{therefore solution is }\\ u(t)=-\frac{1}{12}\cos8\sqrt{2}t+\frac{\sqrt{2}}{8}\sin8\sqrt{2}t\\
{hence}\\R=\sqrt{\frac{11}{288}}\\\\\sigma=\pi - \tan^{-1}\frac{1}{\sqrt{2}}\\\\\omega_0=8\sqrt{2}\\T=\frac{4}{4\sqrt{2}}$

3 0

3 years ago