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3 years ago

What are the x-intercepts of the functions fx)=-4(x+3)(x-9) ?

Mathematics

1 answer:

Angelina_Jolie [31]3 years ago

8 0

Answer:

x=9 or -3

Step-by-step explanation:

used quadratic formula

standard form: ax^2 + bx +c

quadratic formula:

x= -b +- square root of b^2 -4(a)(c) divided by 2(a)

Google quadratic equation for more

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Don't answer it if you don't know

anzhelika [568]

Assuming that there is a typo in the problem and they meant 8 times more than Anne.

5 3/8 * 8 = 40 24/8 = 43 pounds.

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3 years ago

Rob Herndon, an accountant with Southwest Airlines, wants to retire 50% of

valina [46]

To achieve his goal of paying off $430,000 in 10 years, Rob Herndon needs to make $34,186.97 at 5% compounded annually.

<h3>What is a future value?</h3>

A future value refers to a value on a future date based on an assumed growth rate of interest over time.

The future value can be determined using the FV formula or table.

We can also compute the future value using an online finance calculator as follows:

<h3>Data and Calculations:</h3>

N (# of periods) = 10 years

I/Y (Interest per year) = 5%

PV (Present Value) = $0

FV (Future Value) = $430,000

<u>Results:</u>

PMT = $34,186.97

Sum of all periodic payments = $341,869.70

Total Interest= $88,130.30

Thus, for Rob Herndon to achieve his goal of paying off $430,000 in 10 years, he needs to make $34,186.97 at 5% compounded annually.

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7 0

2 years ago

Micheal is three time as old as Jean in seven year he will be twice old as she will be then how old are they both

PtichkaEL [24]

Answer:

Michael is 21 years old while Jean is 7 years old.

Step-by-step explanation:

Given that Micheal is three times as old as Jean, but in seven years he will be twice old as she will be, to determine how old are they both at this time, the following calculation must be performed:

M = 3J

M + 7 = 2J + 7

7 = 1/3

7 x 3 = 21

21 + 7 = 28

7 + 7 = 14

21 / 7 = 3

28 / 14 = 2

Therefore, Michael is 21 years old while Jean is 7 years old.

5 0

3 years ago

Find the height of a right circular cone if the slant height is 4 units and the radius is 2 units

k0ka [10]

The slant height of the right circular cone will be $l=2\sqrt5}$

<h3>What is slant height of cone? </h3>

The formula for the slant height of the cone is given as:

$l^2=r^2+h^2$

Here we have

r=2 units

h=4 units

By putting the values we will get

$l=\sqrt{4^2+2^2$

$l=\sqrt{16+4$

$l=\sqrt{20}$

$l=2\sqrt{5}$

Hence the slant height of the right circular cone will be $l=2\sqrt5}$

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3 years ago

if someone apply to 5 different colleges and 4 different majors how many different scenarios are there

svetoff [14.1K]

Answer:

He can apply for 4 different majors at each college giving

5 * 4 = 20 (if the college permits more than 1 application for a major)

4 0

3 years ago

What are the x-intercepts of the functions fx)=-4(x+3)(x-9) ?​

What are the x-intercepts of the functions fx)=-4(x+3)(x-9) ?