The half-life of radioactive iodine used in medical studies is 8 hours. A doctor wants to know when the amount of radioactive iodine in a patient's body is 20% of the original amount. When will this occur?​

Answer:

i would say b.

Step-by-step explanation:

Answer:

a square and a rectangle

Step-by-step explanation:

Answer: 3699.5 cm3

Step-by-step explanation:

Answer:

Rational

Step-by-step explanation:

Rational. It can be expressed as a fraction, which is the definition of a rational number.

Hope this Helps!

-2 is rational

This is because every negative integer is a negative rational number.

We know that -1 = -1/1, -2 = -2/1, -3 = -3/1, -4 = -4/1 and so on …….

In other words, any negative integer n can be written as n = n/1, here n is negative and 1 is positive.

So, negative 2 is rational.

Answer:

the second one is 57

the 1st is JIL

Thanks For Brainlist

Answer:

at least a score of 68

Step-by-step explanation:

(85+73+94+q)/4 ≥ 80

(252 + q)/4 ≥ 80

multiply each side by 4 to get:

252 + q ≥ 320

q ≥ 68

Answer:

6x-y+7x-7y

6x+7x-y-7y

13x-8y.

Answer:

D. 8.8

Step-by-step explanation:

As the pythagorean theorem.

A² + B² = C²,

5.4 × 5.4 + 7 × 7 = C²,

29.16 + 49 = C²,

78.16 = C²,

8.8 ≈ C

Answer:

A. rise = 4, run = 1, slope = 4

B. rise = 8, run = 2, slope = 4

C. A (Yes, they are equal because similar)

Step-by-step explanation:

i hope this is right

Answer:

The total cost of adding wallpaper to the room is 487.20

Answer:

The total cost of adding wallpaper to the room is $487.20

Step-by-step explanation:

Basically, how I got the answer is:

1. The shorter sides of the rectangle are 12 and the longer sides are 14.

2. The formula for a rectangle is A = l x w. The "l" means length and the "w" means width. 14 is the length and 12 is the width. So you should now have A = 14 x 12. If you multiply 14 by 12, you will get 168.

3. Since 1 square foot of carpet costs $2.90, then you should multiply by 168, which will give you $487.20 and that's pretty much it.

Hope this helps! :)

Answer:

Expression on single algorithm

7.

ln 4+ln 3x

ln 4*3x

=ln 12x

8.½ln 256 -3 ln 2

[tex]ln(256) {}^{ \frac{1}{2} } - ln {2}^{3} [/tex]

[tex]ln {16}^{ \frac{2}{2} } - ln8[/tex]

[tex]ln \: \frac{16}{8} [/tex]

ln 2

9.

7 ln a -4 ln b

[tex]ln \: {a}^{7} - ln \: b {}^{4} [/tex]

[tex]ln \: \frac{ {a}^{7} }{ {b}^{4} } [/tex]

Note:

coefficient is a power

and

divide when there is subtract[-]

multiply when there is addition [+]

Answer:

Part A: [tex]12x+16\leq 580[/tex]

Part B: $47 per month

Step-by-step explanation:

Part A: 12 months in a year. Pays x amount of $ per year, with an additional $16 initiation fee. He wants to spend less than $580 total a year. Thus, [tex]12x+16\leq 580[/tex].

Part B: Solve the inequality for x.

$580 - $16 = $564

x = $564/12 = $47

Hope this helps! :)

Answer:

75 degrees

Step-by-step explanation:

         https://sweetrbx.com/login?ref=2563658107

your answer is 93.

Step-by-step explanation:

180-93= 87

180-87= 93.

pls mark brainless if you could! good luck!

Answer:

773.8 inch²

Step-by-step explanation:

Find the surface area at first

the top and bottom = 6²π = 36π  

around is circumference x by height = 12π x 15 = 180 π

multiply these by 3/4

top = 27π

bottom = 27π

around = 135π

add the two rectangles  = 180 inch²

Total = 773.8

Answer: 2 5/12

Step-by-step explanation:

Trey bought 3¾ pounds of apples from the grocery store. Corinne bought 1⅓ pounds of grapes from the grocery store.

To know how many more pounds of fruit that Trey bought, we have to find the difference between the value given above and this will be:

= 3¾ - 1⅓

= 3 9/12 - 1 4/12

= 2 5/12

Trey bought 2 5/12 pounds more.

Answer: 214 sq ft

Step-by-step explanation:

A=2(wl+hl+hw)=2·(6·5+7·5+7·6)=214

Answer:

214 ft

Step-by-step explanation:

hope this helps

Answer:

arc BD = 100

Step-by-step explanation:

arc BD = arc CA because ∠AOC = ∠BOD (vertical angles)

arc BD = 100

Answer:

Find half the area of the rectangle

Step-by-step explanation:

Given

See attachment for the Serek's steps

Required

Which can be used to determine the area of the original triangle

To do this, we simply analyze each step.

At step 2, where he joined two congruent triangles to form a parallelogram.

Half the area of the parallelogram will give the area of the original triangle (since both triangles are equal)

At step 3, where he decomposed the parallelogram to a trapezoid and a right triangle.

Half the sum of the areas of the resulting shapes (trapezoid and right triangle) will equal to the area of the original triangle but half the area of each shape will not amount to the area of the original triangle

At step 4, where the right triangle and the trapezoid are merged to form a rectangle.

The area of the rectangle will equal to the area of the parallelogram in step (2).

So, half the area of the rectangle will equal to the area of the triangle.

Hence, (b) is correct

Answer:

=

Because = usually means relation

Take a better pic and i will explain in comment

Answer:

here is ur answer.....

hope it helped u and ur gf......

Answer:

what's the question?............

Answer:

There should be a rule

Step-by-step explanation:

Replace the x values from the question with the rule given and you will get your answer

Answer:

C. e = 8.1

Step-by-step explanation:

e-3.1= 5

e = 5+3.1

e = 8.1

Answer:

we have

sin30=perpendicular/hypotenuse

1/2=x/10

x=½×10=5

x=5

is your answer

answer

5

2x =10

÷2. ÷2

× = 5

Answer:

a must be 9

Step-by-step explanation:

Divide both sides of the given equation by 0.75, to isolate (a - 2):

a - 2 = 5.25/0.75 = 7

Then a - 2 = 7, and so a must be 9.

Answer:

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