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shepuryov [24]
3 years ago
9

Solve the equation P = 3L + 2W for w

Mathematics
2 answers:
OleMash [197]3 years ago
7 0

Answer:

W= -3/2 L + 1/2p

zysi [14]3 years ago
7 0

Answer:

W= (P-3L) / 2

Step-by-step explanation:

P = 3L + 2W

then:

P - 3L = 2W

(P-3L)/2 = W

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One hundred teachers attended a seminar on mathematical problem solving. The attitudes of representative sample of 12 of the tea
zzz [600]

Answer:

a) 1.9

b) 3.25

c) 1.5

d) -5.25

Step-by-step explanation:

We are given the following in the data:

4, 7, -1, 1, 0, 5, -3, 2, -1, 6, 5, -2

a) Mean change score

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean =\displaystyle\frac{23}{12} = 1.9

b)  standard deviation for this population

\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}  

where x_i are data points, \bar{x} is the mean and n is the number of observations.

Sum of differences = 126.92

S.D = \sqrt{\dfrac{126.92}{12}} = 3.25

c) median change score

Sorted data: -3, -2, -1, -1, 0, 1, 2, 4, 5, 5, 6, 7

Median:\\\text{If n is odd, then}\\\\Median = \displaystyle\frac{n+1}{2}th ~term \\\\\text{If n is even, then}\\\\Median = \displaystyle\frac{\frac{n}{2}th~term + (\frac{n}{2}+1)th~term}{2}

\text{Median} = \dfrac{6^{th}+7^{th}}{2} = \dfrac{1+2}{2} = 1.5

d) change score that is 2.2 standard deviations below the mean.

\mu - 2.2(\sigma)\\1.92 - 2.2(3.25) = -5.25

3 0
2 years ago
What are the exact solutions of x2 − 3x − 1 = 0?
kobusy [5.1K]
Option C is the answer!

3 0
3 years ago
Read 2 more answers
Can someone help me plz
Oliga [24]

Answer:

6^(7/3)

Step-by-step explanation:

Given 6^2 * cubed_root(6).

The cube root is also equal to 6^1/3

[Multiply the terms, add the powers]

6^2 * 6^(1/3) = 6^(2 + 1/3) = 6^(7/3)

7 0
3 years ago
Timothy purchased a computer for $1,000.
scoundrel [369]

Answer:

This situation represents [a.) exponential decay

The rate of growth or decay, r, is equal to  c.) 0.2

So the value of the computer each year is g.) 80% of the value in the previous year.

It will take [i.) 3 years for the value of the computer to reach $512.

Step-by-step explanation:

Since the value depreciates each year, it represents exponential decay.

The rate of growth or decay, r, is equal to

Depreciates 20%, so r = 0.2.

So the value of the computer each year is ... of the value in the previous year,

Depreciates 20%, so it is 100% - 20% = 80% of the value in the previous year.

It will take x years for the value of the computer to reach $512.

The value of the computer after x years is given by:

V(x) = V(0)(1-r)^x

In which V(0) is the initial value and r is the decay rate. So

V(x) = 1000(1-0.2)^x

V(x) = 1000(0.8)^x

We want to find x for which V(x) = 512. So

V(x) = 1000(0.8)^x

512 = 1000(0.8)^x

(0.8)^x = \frac{512}{1000}

(0.8)^x = (0.512)

Applying log to both sides:

\log{(0.8)^x} = \log{(0.512)}

x\log{0.8} = \log{(0.512)}

x = \frac{\log{0.512}}{\log{0.8}}

x = 3

So it will take 3 years.

6 0
2 years ago
-38=-2(n+6)+6(3n+1) Can you please solve marking branlest show work
r-ruslan [8.4K]

Answer:

n = -2

Step-by-step explanation:

-38 = -2n -12 +18n +6

-38 =16n -6

-38 +6 =16n

-32= 16n

n=-2

3 0
2 years ago
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