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3 years ago

What is the mid point of the x-intercepts of f(x)=(x-2)(x-4)?

Mathematics

2 answers:

VMariaS [17]3 years ago

7 0

Answer:

Step-by-step explanation:

Oxana [17]3 years ago

3 0

Answer:

The x-int.s are (2, 0) and (4, 0) so the midpoint will be (3, 0).

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There are 7800 grams of lodine that have a half-life of 8 days. How much lodine will remain after 40 days?

anygoal [31]

Given that we know the initial mass of Iodine and its half-life, we want to see how much will remain after 40 days.

After 40 days, 244.17 grams of Iodine will remain.

<h3 /><h3>The half-life of materials and how to use it:</h3>

The half-life of a material is the time it takes for that amount of material to reduce to its half.

We can model the amount of Iodine as:

A(t) = A*e^{k*t}

Where A is the initial amount, in this case, 7800g.
k is a constant that depends on the half-life.
t is the time in days.

Replacing what we know, we get:

A(t) = 7800g*e^{k*t}

Now we use the fact that the half-life is 8 days, this means that:

e^{k*8} = 1/2

ln(e^{k*8}) = ln(1/2)

k*8 = ln(1/2)

k = ln(1/2)/8 = -0.0866

Then the function is:

A(t) = 7800g*e^{-0.0866*t}

So now we just need to evaluate this in t = 40.

A(40) = 7800g*e^{-0.0866*40} = 244.17g

So, after 40 days, 244.17 grams of Iodine will remain.

If you want to learn more about half-life and decays, you can read:

brainly.com/question/11152793

3 0

2 years ago

Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-response question.

Alja [10]

The value that could replace variable x in the table is (15 - m)8

<h3 /><h3>How to the value of x in an expression ?</h3>

The students are given 3 minutes to complete each multiple choice question on a test and 8 minutes for each free response question.

From the table, the time to answer the whole multiple choice question is as follows:

total time = 3m

From the table, the total time taken to answer the free response question is as follows:

total time = (15 - m)8

learn more on variable here: brainly.com/question/12798965

#SPJ1

5 0

2 years ago

HELP I WILL GIVE BRAINLEIST OR WHATEVER 50 POINTS

Ilya [14]

answer:

a. scarf costs today = $6

b. scarf costs 3 days from now = $3

step-by-step explanation:

1/2 off means you would multiply the amount by 1/2 then subtract

a. original price of scarf: $12

12 X 1/2 = 6

12 - 6 = 6

— scarf costs today = $6

do the same thing but this time it is a different number

b. 12 X 3/4 = 9

12 - 9 = 3

— scarf costs 3 days from now = $3

3 0

3 years ago

Helppppppppppppppppp

Sergeeva-Olga [200]

<h2>Answer: </h2>

15% of $49.64

=> 15/100 × 49.64

=> $7.446.

<u>After rounding to the nearest ten</u>,

=> <u>$7.5</u>

8 0

3 years ago

Quick algebra 1 assignment for 50 points!

Sati [7]

As per definition

In. a function every domain has an unique range of it

f(x)=y

Here

f(4)=6
f(10)=-2
f(13)=7
d(15)=8
f(10)=11

f(10) has two corresponding values hence it's not a function

8 0

2 years ago