1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rom4ik [11]
3 years ago
7

The function f(x) = 800(1.09)4x shows the growth due to interest that Jim earns on an investment. The steps to calculate an equi

valent function are shown below:
[Step 1] f(x) = 800(1.09)4x

[Step 2] f(x) = 800(1.094)x

[Step 3] f(x) = 800(1.4116)x

[Step 4] f(x) = (1129.27)x

Which of the following is the first incorrect step?

Step 1
Step 2
Step 3
Step 4
Mathematics
2 answers:
KiRa [710]3 years ago
8 0
Yeah I believe its step 2 which in this situation its C
notsponge [240]3 years ago
3 0
Step 2 ....................................
You might be interested in
Help me please i only have a small amount of time
Sveta_85 [38]

Answer: 0.83

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A professor pays 25 cents for each blackboard error made in lecture to the student who pointsout the error. In a career ofnyears
marta [7]

Answer:

(a) The probability that <em>Y</em>₂₀ exceeds 1000  is 3.91 × 10⁻⁶.

(b) <em>n</em> = 28.09

Step-by-step explanation:

The random variable <em>Y</em>ₙ is defined as the total numbers of dollars paid in <em>n</em> years.

It is provided that <em>Y</em>ₙ can be approximated by a Gaussian distribution, also known as Normal distribution.

The mean and standard deviation of <em>Y</em>ₙ are:

\mu_{Y_{n}}=40n\\\sigma_{Y_{n}}=\sqrt{100n}

(a)

For <em>n</em> = 20 the mean and standard deviation of <em>Y</em>₂₀ are:

\mu_{Y_{n}}=40n=40\times20=800\\\sigma_{Y_{n}}=\sqrt{100n}=\sqrt{100\times20}=44.72\\

Compute the probability that <em>Y</em>₂₀ exceeds 1000 as follows:

P(Y_{n}>1000)=P(\frac{Y_{n}-\mu_{Y_{n}}}{\sigma_{Y_{n}}}>\frac{1000-800}{44.72})\\=P(Z>  4.47)\\=1-P(Z

**Use a <em>z </em>table for probability.

Thus, the probability that <em>Y</em>₂₀ exceeds 1000  is 3.91 × 10⁻⁶.

(b)

It is provided that P (<em>Y</em>ₙ > 1000) > 0.99.

P(Y_{n}>1000)=0.99\\1-P(Y_{n}

The value of <em>z</em> for which P (Z < z) = 0.01 is 2.33.

Compute the value of <em>n</em> as follows:

z=\frac{Y_{n}-\mu_{Y_{n}}}{\sigma_{Y_{n}}}\\2.33=\frac{1000-40n}{\sqrt{100n}}\\2.33=\frac{100}{\sqrt{n}}-4\sqrt{n}  \\2.33=\frac{100-4n}{\sqrt{n}} \\5.4289=\frac{(100-4n)^{2}}{n}\\5.4289=\frac{10000+16n^{2}-800n}{n}\\5.4289n=10000+16n^{2}-800n\\16n^{2}-805.4289n+10000=0

The last equation is a quadratic equation.

The roots of a quadratic equation are:

n=\frac{-b\pm\sqrt{b^{2}-4ac}}{2a}

a = 16

b = -805.4289

c = 10000

On solving the last equation the value of <em>n</em> = 28.09.

8 0
3 years ago
Is y= 3(1/2)^x increasing or decreasing?
Zigmanuir [339]

Answer: Hey I looked on a graphing calculator on Desmos, and its seems that this is increasing.

Step-by-step explanation:

5 0
3 years ago
Please please help me on this.
quester [9]

Answer:

A

Step-by-step explanation:

An equation in the form y=kx represents something increasing at a constant <u>rate</u>

5 0
2 years ago
What are the factors of 19
madam [21]
1 and 19, 19 is a prime number.
8 0
3 years ago
Read 2 more answers
Other questions:
  • Write 54.9 % as a decimal
    9·2 answers
  • -x + 2y=10<br> -3x+6y=11
    13·2 answers
  • The graphs of y = –7x + 12 and y = 2/3x –2/3 are shown. Which region describes the solution of the system of inequalities y ≤ –7
    15·1 answer
  • What number is exactly half way between 1/9 and 1/3
    14·1 answer
  • Can someone plz help me solved this problem! Need help ASAP! Help me !
    14·1 answer
  • Find the missing length indicated.<br> 18<br> ?<br> 4<br> 8<br> A) 21<br> C) 9<br> B) 3<br> D) 25
    14·1 answer
  • -2-(-7)= help me pls.
    5·2 answers
  • Please help, due today
    6·1 answer
  • Which expressions are equivalent to the on below select all that apply 9x
    15·2 answers
  • Please help me i don’t understand
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!