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4 years ago

I need to answer the two questions at the bottom please help.

Mathematics

1 answer:

Nookie1986 [14]4 years ago

5 0

1st question

$23,760-(4000+6000)=$13,760
$13,760 x 4%=$ 550.40

2nd question

$43,300-(2000+2000)= $39,300
$39,300 x 5%= $1,965

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Consider the line 3x+8=1

noname [10]

Answer: for parallel its 3 for perpendicular its negative 3

Step-by-step explanation: parallel its the same perpendicular is negative

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3 years ago

An English professor assigns letter grades on a test according to the following scheme. A: Top 5% of scores B: Scores below the

tangare [24]

Answer:

Grade D score:

$69 \leq x \leq 74$

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 78.8

Standard Deviation, σ = 7.1

We are given that the distribution of scores on test is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

D: Scores below the top 77% and above the bottom 9%

We have to find the value of x such that the probability is 0.77

$P( X > x) = P( z > \displaystyle\frac{x - 78.8}{7.1})=0.77$

$= 1 -P( z \leq \displaystyle\frac{x - 78.8}{7.1})=0.77$

$=P( z \leq \displaystyle\frac{x - 78.8}{7.1})=0.23$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 78.8}{7.1} =-0.739\\\\x = 73.55$

We have to find the value of x such that the probability is 0.09

$P(X < 0.09) = \\\\P( X < x) = P( z < \displaystyle\frac{x - 78.8}{7.1})=0.09$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 78.8}{7.1} = -1.341\\\\x = 69.27$

Thus, the numerical value of score to achieve grade D is

$69 \leq x \leq 74$

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3 years ago

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n200080 [17]

Yes it is proportional

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3 years ago

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Elodia [21]

Answer:

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Step-by-step explanation:

We want to find the value of

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You can find this on your scientific calculator as a secondary function;

Enter $e^5$ on your scientific calculator and press the equal to sign.

You should see the result;

20.08553692319

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4 years ago

Read 2 more answers

How many sides does a regular polygon have if each interior angle has a measure of 108° ?

Katarina [22]

Answer:

Each interior angle of the polygon is 108 degrees, so each exterior angle of the polygon is 180-108 = 72 degrees. So the number of sides is 360/72 = 5.

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3 years ago