1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PtichkaEL [24]
3 years ago
9

.3x+.03x+.003x+.0003x+.00003x=3 solve for x

Mathematics
1 answer:
Lemur [1.5K]3 years ago
3 0
First, you can combine all of the terms involving x:
0.3x + 0.03x + 0.003x + 0.0003x + 0.00003x = 3
0.33333x = 3
0.33333x / 0.33333 = 3 / 0.33333
x = 9.0000900009…
x ≈ 9
Hope this helps! :)

You might be interested in
Divide the combinations.<br><br> 60C3 / 15C3
Mariulka [41]
I hope you know what '!' means
2!=2
3!=6
4!=24
basicalkly times every natural number including and before that number


nCr=\frac{n!}{r!(n-r)!}
so
\frac{60C3}{15C3}=
\frac{ \frac{60!}{3!(60-3)!} }{ \frac{15!}{3!(15-3)!} }=
( \frac{60!}{3!(60-3)!})(\frac{3!(15-3)!}{15!})=
( \frac{60!}{3!(57)!})(\frac{3!(12)!}{15!})=
\frac{(60!)(3!)(12!)}{(3!)(57!)(15!)}=
\frac{(60!)(12!)}{(57!)(15!)}=
\frac{(60!)}{(57!)(15)(14)(13)}=
\frac{(60)(59)(58)}{(15)(14)(13)}=
\frac{(30)(59)(58)}{(15)(7)(13)}=
\frac{(6)(59)(58)}{(3)(7)(13)}=
\frac{6844}{91}
4 0
3 years ago
Read 2 more answers
X^2+4x-1/(x+2)^2=0 solve for x
dalvyx [7]
<span>x^2+4x-1/(x+2)^2=0
x^2 + 4x - 1 = 0
</span>
\frac{x^2+10x-7}{x^2+10x+25} =0\\x^2+10x-7=0\\x= \frac{-b\pm\sqrt{b^2-4ac}}{2a};
where a = 1, b = 4 and c = -1

x=\frac{-4\pm\sqrt{4^2-(4\times1\times(-1)}}{2\times1}\\=\frac{-4\pm\sqrt{16+4}}{2}=\frac{-4\pm\sqrt{20}}{2}\\=\frac{-4\pm\sqrt{4\times5}}{2}=\frac{-4\pm2\sqrt{5}}{2}=-2\pm\sqrt{5}\\=-2+\sqrt{5}&#10; \ or \ -2-\sqrt{5}\\x=0.24 \ or \ x = -4.24
5 0
2 years ago
What is the fraction 25/30 in simplest form
Anuta_ua [19.1K]

\frac{5}{6}

To simplify the fraction, divide the numerator / denominator ( cancel ) by the highest common factor of 25 and 30, that is 5

\frac{25}{30} = \frac{5}{6} in simplest form


5 0
3 years ago
Combine like terms. What is a simpler form of the expression?
qwelly [4]
-3(-4y+3)+7y 

First multiply -3 by the terms in the parentheses 
-3(-4y+3) = 12y -9
Your expression now looks like 
12y -9 +7y 
Then combine the terms containing the variable y 
12y + 7y = 19 y 
Your final answer is 
19y - 9 (answer choice A)

7 0
3 years ago
Read 2 more answers
Tensile-strength tests were carried out on two different grades of wire rod. Grade 1 has 10 observations yielding a sample mean
LuckyWell [14K]

Answer:

t = \frac{1085-1034}{\sqrt{\frac{52^2}{10} +\frac{61^2}{15}}} = 2.240

df = n_1 +n_2 -2 = 10+15-2= 23

p_v = 2*P(t_{23} >2.240) = 0.035

Since the p value is lower than the significance level we have enough evidence to conclude that the true means are different at 5% of significance

Step-by-step explanation:

Data given

\bar X_1 = 1085 sample mean for group 1

\bar X_2 = 1034 sample mean for group 2

n_1 = 10 sample size for group 1

n_2 = 15 sample size for group 2

s_1 = 52 sample deviation for group 1

s_2 = 61 sample deviation for group 2

Solution

We want to check if the two means are equal so then the system of hypothesis are:

Null hypothesis: \mu_1= \mu_2

Alternative hypothesis: \mu_1 \neq \mu_2

And the statistic is given by:

t = \frac{\bar X_1 -\bar X_2}{\sqrt{\frac{s^2_1}{n_1}+\frac{s^2_2}{n_2}}}

And replacing we got:

t = \frac{1085-1034}{\sqrt{\frac{52^2}{10} +\frac{61^2}{15}}} = 2.240

The degrees of freedom are given by:

df = n_1 +n_2 -2 = 10+15-2= 23

And the p value would be:

p_v = 2*P(t_{23} >2.240) = 0.035

Since the p value is lower than the significance level we have enough evidence to conclude that the true means are different at 5% of significance

8 0
3 years ago
Other questions:
  • Can you help me please, this is easy but im having some trouble
    15·2 answers
  • Kai buys 6 fiction books and 4 nonfiction books.
    9·2 answers
  • The largest butterfly in the world is found in Papua,New Guinea.The female butterfly of the species weighs about 9/10 ounce.Use
    10·1 answer
  • Given that t 8 = 60 and t 12 = 48, find the 45th term of the arithmetic sequence.
    10·1 answer
  • Which is the graph of the equation y-1=2/3(x-3)? <br> PLEASE ANSWER ASAP
    8·2 answers
  • Simplify the following expression: (1 point) 2x − 2y + 5z − 2x − y + 3z
    14·2 answers
  • Alien probe is stretched between the top and a stake in the ground the head of the state is at ground level the rope also touche
    7·1 answer
  • a newborn boa constrictor measure 18 inches long. An adult boa constrictor measures 9 times the lenght of the newborn plus 2 inc
    11·2 answers
  • Sigmund wrote four checks last month, and these were the only transactions for his checking account. According to his check regi
    13·2 answers
  • Y=x+4 y=-2x-2 explain the awnser plz
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!