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2 years ago

Jakob simplified the expression as shown.

Mathematics

2 answers:

Flauer [41]2 years ago

5 0

Answer:

He simplified the x coefficients incorrectly

Step-by-step explanation:

Leno4ka [110]2 years ago

3 0

Answer:

He simplified the x coefficients incorrectly :)

Step-by-step explanation:

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Margo deposited $100 into a savings account earning 4.5% simple annual interest. At the end of each year, she adds $100 to her a

nadezda [96]

Answer:

principal interest total money in account

at the end of year

Year one $100 $4.5 $104.5

year two $200 $ 9 +$4.5 $ 213.5

year three $300 $ 9 +$4.5 + $13.5 $ 327

Step-by-step explanation:

Simple interest for any principal is given by

I = p* r* t/100

I = interest rate accrued on principle amount

p is the amount deposited

r is the rate of interest

t is the time period of saving

_______________________________________________

For year one

p = $100

r = 4.5%

t=1

I = 100*4.5*1/100 = 4.5

_______________________________________________

For year two $100 more is added to already existing $100 in account.

p = 100 +100 = $200

r = 4.5%

t=1

I = 200*4.5*1/100 = 9

_______________________________________________

For year two $100 more is added to already existing $200 in account after two years.

p = 100 +100 +100 = $300

r = 4.5%

t=1

I = 300*4.5*1/100 = 13.5

_______________________________________________

There fore total money in Margo account is

$300 saving deposited by her

$4.5 + $9 + $13.5 = $27 (interest accrued in three time)

Formulating the results in tabular form

principal interest total money in account

at the end of year

Year one 100 4.5 104.5

year two 200 9 +4.5 213.5

year three 300 9 +4.5 + 13.5 327

7 0

2 years ago

An airliner carries 150 passengers and has doors with a height of 78 in. Heights of men are normally distributed with a mean of

iogann1982 [59]

Answer:

Step-by-step explanation:

x, height of men is N(69, 2.8)

Sample size n =150

Hence sample std dev = $\frac{2.8}{\sqrt{150} } =0.229$

Hence Z score = $\frac{x-69}{0.229}$

A) Prob that a random man from 150 can fit without bending

= P(X<78) = P(Z<3.214)=1.0000

B) n =75

Sample std dev = $\frac{2.8}{\sqrt{75} } =0.3233$

P(X bar <72) = P(Z<9.28) = 1.00

C) Prob of B is more relevent because average male passengers would be more relevant than a single person

(D) The probability from part (b) is more relevant because it shows the proportion of flights where the mean height of the male passengers will be less than the door height.

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2 years ago

Jackson and his children went into a movie theater and where they sell bags of popcorn for $6.50 each and candies for $4 each. J

Lisa [10]

Answer:

There are no possible solutions for this question.

Step-by-step explanation:

3 0

2 years ago

Factor the expression 2x(x+1) - 7 (x+1)

valentina_108 [34]

Answer:

See it and do it

Follow me please

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1 year ago

How is quadrilateral ABCD related to quadrilateral A'B'C'D' shown below?

coldgirl [10]

What you put is correct. A’B’C’D’ is what would be shown if you rotate ABCD 90 degrees clockwise

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2 years ago