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3 years ago

Solve for n in the literal equation a(n-2)+5=bn

Mathematics

1 answer:

Helga [31]3 years ago

7 0

Answer:

Answer is below

Step-by-step explanation:

a(n-2)+5=bn

Add -bn to both sides

an-2a+5+(-bn)=bn+(-bn)

an-bn-2a+5=0

add two a to both sides

an−bn−2a+5+(2a)=0+(2a)

an−bn+5=2a

Add -5 to both sides

an−bn+5+(-5)=2a+(-5)

an−bn=2a−5

Factor out our variable

n(a−b)=2a−5

Divide both sides by a-b

n(a-b)/a-b=2a-5/a-b

n=2a-5/a-b

Hope this helps

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There are 50 students going on a class trip. 35

iogann1982 [59]

The answer should be 74% probability

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3 years ago

Jer saw 91 squirrels and 1⁄3 as many chipmunks. Which of the following is a good estimation of how many more squirrels he saw th

boyakko [2]

60 more squirrels is the answer because sine its an estimate, 91 turns into 90
therefore u have
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3 years ago

Help me please I literally don’t understand any of this. I know it’s easy too.

Ber [7]

Holigina, this is the solution:

Let's recall that √x = x ^(1/2)

Therefore,

√x√x = x ^(1/2 + 1/2) = x^1 (We sum the exponents of the same base)

The correct answer is C. 1

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1 year ago

Consider a drug testing company that provides a test for marijuana usage. Among 310 tested subjects, results from 28 subjects w

Naily [24]

Answer:

$z=\frac{0.0903 -0.1}{\sqrt{\frac{0.1(1-0.1)}{310}}}=-0.569$

The p value for this case can be calculated with this probability:

$p_v =P(z$

Since the p value is higher than significance level we don't have enough evidence to conclude that the true proportion is significantly less than 0.1

Step-by-step explanation:

Information given

n=310 represent th sample selected

X=28 represent the subjects wrong

$\hat p=\frac{28}{310}=0.0903$ estimated proportion of subjects wrong

$p_o=0.1$ is the value to verify

$\alpha=0.05$ represent the significance level

t would represent the statistic

$p_v$ represent the p value

System of hypothesis

We want to test the claim that less than 10 percent of the test results are wrong ,and the hypothesis are:

Null hypothesis: $p\geq 0.1$

Alternative hypothesis: $p < 0.1$

The statistic is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing the info we got:

$z=\frac{0.0903 -0.1}{\sqrt{\frac{0.1(1-0.1)}{310}}}=-0.569$

The p value for this case can be calculated with this probability:

$p_v =P(z$

Since the p value is higher than significance level we don't have enough evidence to conclude that the true proportion is significantly less than 0.1

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3 years ago

I need help ASAP please! The graph of y=f(x) is shown below. Graph y=1/2f(x)

WARRIOR [948]

Answer:

The graph of y = 1/2f(x) is the graph y = x and y = -x for -4 ≤ y ≤ 0

Step-by-step explanation:

Here we note that when y = 0, x = 0

when y = -4, x = -2

The equation is therefore of the form y = m·x + c

m = slope

$Slope, \ m = \frac{y_2- y_1}{x_2- x_1}} = \frac{0 - (-4)}{0 - (-2)} =\frac{4}{2} =2$

c = y intercept = 0

Hence the first line is y = 2·x

The second line on the right is the mirror of the first on the left with slope;

$Slope, \ m = \frac{y_2- y_1}{x_2- x_1}} = \frac{-4 -0}{2-0} =\frac{-4}{2} =-2$

Hence the second line on the right is y = -2·x

Hence for y = 1/2 f(x) we have;

y = 1/2 × 2·x = x and y = 1/2 ×-2·x = -x

Graphing the functions, we have

6 0

3 years ago