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xenn [34]
3 years ago
11

28 squared minus 39x minus 80 equals 0​

Mathematics
1 answer:
Rudik [331]3 years ago
3 0

Answer:

x = 704/39 ( <----Fraction)

Step-by-step explanation:

28 squared minus 39x minus 80 equals 0​  

784-39x-80=0  evaluate the power

704-39x=0  Subtract the numbers

-39x=-704  move the constant to the right hand side and change it's sign

Divide on both side to get x = 704/39

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Answer:

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Step-by-step explanation:

Starts with $400 in her account. Every day (we'll use the variable m for the number of days), she deposits $8.

400 + 8m

If you were to be asked how much money she has in her bank account after 10 days, you plug in 10 for m. Same for any other number of days.

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Help me with this question, please!! I don't understand!!
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Answer:

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3 years ago
Suppose that you are examining the difference in ages between brides and grooms. You are interested in conducting a significance
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Answer:

Parameter = 0.5

Null hypothesis : H0 : P0 = 0.5

Alternative hypothesis ; H0 : P0 > 0.5

Pvalue = 0.99966

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The parameter defines a statistical value or calculation which is derived from the population.

The parameter in this scenario is the population proportion, P0 which is 0.5

The scenario above describes a scenario to test the difference in population.

The null hypothesis, that bride and groom are of the same age ;

H0 : P0 = 0.5

The alternative hypothesis ; the bride is younger Than the groom in more than half of the population.

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To obtain the Pvalue :

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x = 67 ; sample size, n = 100

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Answer:

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Step-by-step explanation:

5 0
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What is the future value of the loan in the previous problem if the interest is compounded
GenaCL600 [577]

Answer:Your calculator should now display a screen with these variables. I have written what each

variable stands for next to the variable. You calculator likely has numbers next to some of the

variables. This is okay. We will type over them when we need to solve a specific loan problem.

N Number of payments

I% Annual interest rate

PV Loan amount (Normally

entered as a POSITIVE

number in loan problems.)

PMT Monthly payment amount

(Usually entered as a

NEGATIVE number in loan

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FV Balance when loan is paid

off. (Usually 0 in a loan

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P/Y Number of payments per

year. (Usually 12 in a loan

problem.)

C/Y How often interest is

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loan problem)

Begin / End Choose Begin if you make a

loan payment the day you

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choose End. We will always

leave this on END.

Example: A new car is purchased and a $25,000 loan is taken. The loan is for 6 years (72

months) and the interest rate is 4.9% compounded monthly. What is the monthly payment?

Calculator steps: Hit APPS button then select Finance then select TVM solver.

We will solve most of the problems in this chapter from this screen. We need to know what

each variable represents. We will enter values for every variable except for the one we are

solving for. We are computing a monthly payment. We will put values in for every variable,

except (PMT). PMT stands for the payment.

Enter these values on your calculator.

N (number of payments) 72

I% (annual interest rate) 4.9

PV (Loan amount, make

this amount positive.)

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PMT Move cursor here and hit

green alpha button then

enter after you have entered

every other value.

FV (what you owe after

make all payments)

0

P/Y (payments per year) 12

C/Y (how often interest is

paid)

12

Begin / End

(We will always leave this

on end.)

End

Once you have entered all of the amounts scroll up to PMT. Make sure your cursor is flashing

next to PMT. It doesn’t matter what value is in the PMT. Your calculator will put in the correct

payment when you tell it to compute the payment. Hit the green ALPHA button the ENTER.

Answer: $401.46

Step-by-step explanation:

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