All categories

3 years ago

This i will give brainless answer to

Mathematics

1 answer:

Andru [333]3 years ago

3 0

Answer:

m=-2n/9

Step-by-step explanation:

You might be interested in

A scientist studying water quality measures the lead level in parts per billion (ppb) at each of 49 randomly chosen locations al

NeX [460]

Complete Question

The complete qustion is shown on the first uploaded image

Answer:

The correct option is B

Step-by-step explanation:

From the question we are told that

The sample size is $n = 49$

The mean is $\mu = 17ppb$

The standard deviation is $\sigma = 14 ppb$

Generally the standard error of this measurement is mathematically represented as

$\sigma_z = \frac{\sigma}{\sqrt{n} }$

substituting values

$\sigma_{\= x} = \frac{14}{\sqrt{49} }$

$\sigma_{\= x} = 2$ ppb

Now the probability that the mean lead level from the sample of 49 measurements T is less than 15 ppb represented as P(X < 15 )

Next is to find the z value

$z = \frac{\mu -\sigma }{\sigma_{\= x}}$

$z = \frac{15-17}{2}$

$z = -1$

Now checking the z-table for the z-score of -1 we have

$P(X$

5 0

4 years ago

Write as a fraction in lowest terms: <br> 0.126126125= a/b

Mkey [24]

Answer:

a= 14

b= 111

just took it

7 0

4 years ago

Am I doing this right plz help me

Elza [17]

Your original inequality is
.. w -2 ≤ 8
The additive property of equality applies to inequalities as well as to equations. You use the additive property of equality to solve this. Add 2 to both sides.
.. w -2 +2 ≤ 8 +2
The purpose of adding 2 is to cancel the effect of subtracting 2. That is, -2+2=0, and w+0 = w.
.. w ≤ 10

The correct selection would be B.

4 0

3 years ago

Question 1 (10points)<br><br> If<br> f (x) = x + 4, what is f (5)?

lyudmila [28]

Answer:

Step-by-step explanation:

Substitute the given value into the function and evaluate

8 0

3 years ago

The quotient of 49 and a number

Lana71 [14]

Answer:

Step-by-step explanation:

7 0

3 years ago