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2 years ago

F (x)=(3x+7)^2 then f (1) =

Mathematics

2 answers:

AlexFokin [52]2 years ago

8 0

F(1) MEANS TO GIVE THE VALUE OF x AS 1
WHEN U SUBSTITUTE IT U GET THE ANSWER AS 100

g100num [7]2 years ago

5 0

Y=(3[1]+7)^2
y=(10)^2
y=100

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The starting salaries of individuals with an MBA degree are normally distributed with a mean of $40,000 and a standard deviation

antiseptic1488 [7]

Answer:

$P(X>30000)=P(\frac{X-\mu}{\sigma}>\frac{30000-\mu}{\sigma})=P(Z-2)$

And we can find this probability using the complement rule and the normal standard distribution

$P(z>-2)=1-P(z$

Step-by-step explanation:

Let X the random variable that represent the starting salaries of individuals with a MBA of a population, and for this case we know the distribution for X is given by:

$X \sim N(40000,5000)$

Where $\mu=40000$ and $\sigma=5000$

We are interested on this probability

$P(X\geq 30000)$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

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

Using this formula we got:

$P(X>30000)=P(\frac{X-\mu}{\sigma}>\frac{30000-\mu}{\sigma})=P(Z-2)$

And we can find this probability using the complement rule and the normal standard distribution

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3 years ago

The perimeter Of a rectangle is 30 inches if it’s Lance is three times it’s width find the dimensions.

Marat540 [252]

Answer:

Width: 3.75

Length: 11.25

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2 years ago

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2 years ago

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romanna [79]

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Step-by-step explanation:

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A 20 foot ladder leaning against a wall is used to reach a window that is 17 feet above the ground. How far from the wall is the

GarryVolchara [31]

The bottom of the ladder is 10.5 feet away from the wall

Step-by-step explanation:

The given scenario forms a right triangle.

Where

The length of ladder will be the hypotenuse

The wall on which the window is situated will ebt he perpendicular and

The distance between the foot of ladder and the wall will be the base

So,

Hypotenuse = H = 20 foot

Perpendicular = P = 17 feet

Base = B = ?

Using the Pythagoras theorem

$H^2=P^2+B^2\\(20)^2=(17)^2+B^2\\400=289+B^2\\400-289=B^2\\B^2=111\\Taking\ square\ root\ on\ both\ sides\\\sqrt{B^2}=\sqrt{111}\\B=10.53\\Rounding\ off\ to\ the\ nearest\ tenth\\B=10.5$

The bottom of the ladder is 10.5 feet away from the wall

Keywords: Triangle, Pythagoras Theorem

Learn more about Pythagoras theorem at:

#LearnwithBrainly

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