All categories

4 years ago

Solve for x 0.3x=0.01x+2.9

Mathematics

1 answer:

PolarNik [594]4 years ago

3 0

Answer:

0.3x= 0.01x+2.9 -->

--> -0.01x -0.01x -->

--> 0.29x= 2.9 -->

--> /0.29 /0.29 -->

--> x=10

Step-by-step explanation:

1: subtract 0.01x from both sides

2: divide your answer (0.29) on both sides

3. you answer is now whatever x is (10)

You might be interested in

Suppose that E(θˆ1) = E(θˆ2) = θ, V(θˆ 1) = σ2 1 , and V(θˆ2) = σ2 2 . Consider the estimator θˆ 3 = aθˆ 1 + (1 − a)θˆ 2. a Show

katen-ka-za [31]

Answer:

Step-by-step explanation:

Given that:

$E( \hat \theta _1) = \theta \ \ \ \ E( \hat \theta _2) = \theta \ \ \ \ V( \hat \theta _1) = \sigma_1^2 \ \ \ \ V(\hat \theta_2) = \sigma_2^2$

If we are to consider the estimator $\hat \theta _3 = a \hat \theta_1 + (1-a) \hat \theta_2$

a. Then, for $\hat \theta_3$ to be an unbiased estimator ; Then:

$E ( \hat \theta_3) = E ( a \hat \theta_1+ (1-a) \hat \theta_2)$

$E ( \hat \theta_3) = aE ( \theta_1) + (1-a) E ( \hat \theta_2)$

$E ( \hat \theta_3) = a \theta + (1-a) \theta = \theta$

b) If $\hat \theta _1 \ \ and \ \ \hat \theta_2$ are independent

$V(\hat \theta _3) = V (a \hat \theta_1+ (1-a) \hat \theta_2)$

$V(\hat \theta _3) = a ^2 V ( \hat \theta_1) + (1-a)^2 V ( \hat \theta_2)$

Thus; in order to minimize the variance of $\hat \theta_3$ ; then constant a can be determined as :

$V( \hat \theta_3) = a^2 \sigma_1^2 + (1-a)^2 \sigma^2_2$

Using differentiation:

$\dfrac{d}{da}(V \ \hat \theta_3) = 0 \implies 2a \ \sigma_1^2 + 2(1-a)(-1) \sigma_2^2 = 0$

⇒

$a (\sigma_1^2 + \sigma_2^2) = \sigma^2_2$

$\hat a = \dfrac{\sigma^2_2}{\sigma^2_1+\sigma^2_2}$

This implies that

$\dfrac{d}{da}(V \ \hat \theta_3)|_{a = \hat a} = 2 \ \sigma_1^2 + 2 \ \sigma_2^2 > 0$

So, $V( \hat \theta_3)$ is minimum when $\hat a = \dfrac{\sigma_2^2}{\sigma_1^2+\sigma_2^2}$

As such; $a = \dfrac{1}{2}$ if $\sigma_1^2 \ \ = \ \ \sigma_2^2$

4 0

4 years ago

Pls pls pls help me i do not get

patriot [66]

63%
28%
I am pretty sure this is it

4 0

3 years ago

After multiplying,we have a(b plus c)

elixir [45]

Answer:

The Distributive Property is easy to remember, if you recall that "multiplication distributes over addition". Formally, they write this property as "a(b + c) = ab + ac". In numbers, this means, for example, that 2(3 + 4) = 2×3 + 2×4.

Step-by-step explanation:

7 0

3 years ago

If 8 pair of jeans cost 221.50 find the cost of 7 pairs

alexgriva [62]

Answer: 193.8125

8 pairs cost 221.50

1 pair costs 221.50/8

7 pairs cost 221.50/8 * 7 which is 193.8125

Brainliest pweasee if the answer is correct! <3

<h2>૮꒰ ˶• ༝ •˶꒱ა</h2><h2>./づᡕᠵ᠊ᡃ࡚ࠢ࠘ ⸝່ࠡࠣ᠊߯᠆ࠣ࠘ᡁࠣ࠘᠊᠊°.~♡︎ Sara Senpie </h2>

3 0

3 years ago

Answer thismath......

Karolina [17]

Answer:

you can travel 150 miles

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Solve for x 0.3x=0.01x+2.9​

Solve for x 0.3x=0.01x+2.9