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3 years ago

P = a + (n - 1)b, for b

2 answers:

8 0

P = a + (n - 1)b Subtratc a from both sides
P - a = (n - 1)b Divide both sides by (n - 1)
$\frac{P - a}{n - 1}$ = b Switch the sides to make it easier to read
b = <span> $\frac{P - a}{n - 1}$ </span>

sweet [91]3 years ago

5 0

The answer is b=P-a-(n+1) all you had to do was the a and the parenthesis from the b and put it on the other side

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Class of 50 students dressed up 38% have white shirts. How many are wearing white shirts?

shutvik [7]

Step-by-step explanation:

☥ $\underline{ \underline{ \text{Given} }}:$

Total number of students = 50
Percentage of students who are wearing white shirts = 38 %

☥ $\underline{ \underline {\sf{To \: find} }}:$

Total number of students who are wearing white shirts

☥ $\underline{ \underline{ \sf{Solution} }} :$

⟹ $\sf{38\% \: of \: 50} = \frac{38}{100} \times 50 = \boxed{ \sf{19}}$

$\red{ \boxed{ \boxed{ \tt{⟿ \: Our \: final \: answer : 19}}}}$

Hope I helped ! ♡

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3 0

3 years ago

Please help me its 15 pts and brainlist

loris [4]

Answer:

this is 8 p

Step-by-step explanation:

8 0

3 years ago

Write the sentence as an equation.<br><br> 110 multiplied by r equals 182 divided by g

Free_Kalibri [48]

110xr=182/g

reason: i know

7 0

3 years ago

Read 2 more answers

A sample size of n = 64 is drawn from a population whose standard deviation is o = 5.6.

AlekseyPX

Answer:

The margin of error for a 99% confidence interval for the population mean is 1.8025.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.99}{2} = 0.005$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.005 = 0.995$ , so $z = 2.575$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

In this problem:

$\sigma = 5.6$

$M = 2.575*\frac{5.6}{\sqrt{64}} = 1.8025$

The margin of error for a 99% confidence interval for the population mean is 1.8025.

5 0

3 years ago

The end points of a diameter of a circle are (6,2) and (-4,7).

motikmotik

Answer:

Step-by-step explanation:

The standard form equation of a circle with radius r is expressed as

( x − h )^2 + ( y − k )^2 =r ^2 ,

where r represents the radius

h and k are the coordinates of the center of the circle C( h , k )

To determine the coordinates at the center of the circle, the midpoint formula would be used. It is expressed as

[(x1 + x2)/2 , (y1 + y2)/2]

Midpoint of the circle =

(6 - 4)/2 , (2 + 7)/2 = (1, 4.5)

h coordinate of the center = 1

k coordinate of the center = 4.5

r^2 = (x - h)^2 + (2 - k)^2

r^2 = (6 - 1)^2 + (2 - 4.5)^2

r^2 = 5^2 + (- 2.5)^2 = 25 + 6.25

r^2 = 31.25

Substituting r^2 = 31.25, h = 1 and k = 4.5 into (x − h )^2 + ( y − k )^2 = r^2, the standard equation of the circle becomes

(x − 1 )^2 + ( y − 4.5 )^2 = 31.25

3 0

3 years ago