Mathematics High School

After the 4th half life how much of the sample is left if the mass is 100g.

Answers

Answer 1

Answer:

[tex]\huge\boxed{\sf 6.25 \ g}[/tex]

Step-by-step explanation:

After every Half life , Half of the mass is left.

After 1st Half life = 100 g / 2 = 50 g

After 2nd Half life = 50 / 2 = 25 g

After 3rd Half life = 25 / 2 = 12.5 g

After 4th Half life = 12.5 / 2 = 6.25 g

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

Related Questions

complete the addition equation that represents the associative property

Answers

1). 7....12
9....11
2). 8....9
3....9
That should be correct try that

i need help lol i forgot how to do this

Answers

Answer:

the answer is D because anything with an exponent of 0 is equal to 1

Step-by-step explanation:

I hope this helps :))

Solve pls

for the function -2x²+x+1 find f(3)

Answers

Answer:

f(3) = -14

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = -2x² + x + 1

f(3) is x = 3

Step 2: Evaluate

Substitute:                    f(3) = -2(3)² + 3 + 1Exponents:                   f(3) = -2(9) + 3 + 1Multiply:                        f(3) = -18 + 3 + 1Add:                              f(3) = -15 + 1Add:                              f(3) = -14

[2.1 + (9.2 x 3.3)] x 0.8

Answers

The answer is 25.968

Answer:

the answer is 25.96800

Square ABCD has diagonals AC¯¯¯¯¯

and BD¯¯¯¯¯

. What is m∠ABD

A

180º

B

90º

C

45º

D

360º

Answers

Answer:

option (c)

Step-by-step explanation:

Given,

ABCD is a square.

AC and BD are diagonals

We know that,

Sides of the square make 90 degrees with each other.

And Diagonals bisect the opposite angles of the square.

Now,

[tex]\angle ABD = \dfrac{\angle ABC}{2}[/tex]

[tex]\angle ABC = 90^\circ[/tex]

[tex]\angle ABD = \dfrac{\angle ABC}{2}[/tex]

[tex]\angle ABD = \dfrac{90^\circ}{2}[/tex]

[tex]\angle ABD = 45^\circ[/tex]

Hence, option (c) is correct.

what is {1x+89x(8+29x)}{2x+89x(x+9)}

Answers

Answer:

229709x^4+2136000x^3+572539x^2

Step-by-step explanation:

Answer to your question

DIRECTIONS: Use this information to answer Parts A, B, and C.
A traffic cone has a diameter of 10 inches and a height of 27 inches.
Part A
Find the volume of the cone.

Answers

Answer:

V=706.85

Step-by-step explanation:

Well, first of when you want to find the volume of the cone you need to have a radius and hieght. And the radius is half the diameter, so divide the diameter into half: 10/2=5 in. and you already have the height so just plug in the numbers.

Formula: V= [tex]\frac{1}{3}[/tex][tex]\pi[/tex][tex]r^{2}[/tex]h ---> V= [tex]\frac{1}{3}[/tex][tex]\pi[/tex]([tex]5^{2}[/tex])(27)

And put the plugged in formula in your calculator and you'll find the answer!

V=706.85

I hope this helped.

Help I will mark brainliestttt

Answers

Answer:

20

Step-by-step explanation:

5+0.65t=10+0.45t

0.25t=5

t=20

What is (-3,4) (5,-2) in slope intercept form?

Answers

Answer:

y=-3/4x+7/4

Step-by-step explanation:

Answer:

I got y = -3/4x + 7/4.

Might be wrong, but I'm pretty sure.

County Middle School is buying pizza for all of its students. Each pizza has 8 slices. Each student will receive 1 slice. There are 700 students at County Middle School. How many pizzas will the school need to buy?

Answers

Answer:

88 at least

Step-by-step explanation:

So, if you need to give each student a slice remainders round up to the nearest whole number. So first you simply divide 700/8 (Students/Pieces of pizza per slice) and get 87.5. Then you round up to 88 since you cannot buy half a pizza (that's weird). You will have 4 extra slices to feed the teachers btw.

Need answers for #3 please hep

Answers

I got the 12 for my answer

find the measurement indicated in each parallelogram

Answers

QR is congruent to PS
So if QR is 17.7 PS is 17.7
Answer 3.) PS equals 17.7

Answer:

QR=PS in a parallelogram

Therefore, 17.7 is the right answer.

A: x/8=3/4
B: 2/5=x/40
C: 1/8=x/40
D:x/10=12/15

Answers

I’m assuming you want to figure out what x is in the equation so....

6/8=3/4
2/5=16/40
1/8=5/40
8/10=12/15

I hope this helps.

Hooke’s Law of Elasticity states that the force applied, y, varies directly with the distance a spring stretches, x (assuming the spring is not stretched past its elastic limit). If a force of 160 newtons stretches a spring 800 cm, how far will a force of 368 newtons stretch the same spring? Justify your answer.
Group of answer choices

F. It will stretch the same spring 73.6 cm because the equation is y equals 5x.

G. It will stretch the same spring 73.6 cm because the equation is y equals one fifth x..

H. It will stretch the same spring 1,840 cm because the equation is y equals 5x.

J. It will stretch the same spring 1,840 cm because the equation is y equals one fifth x..

Answers

Answer:

H:  It will stretch the same spring 1,840 cm because the equation is y equals 5x.

Step-by-step explanation:

800=y

160and368=x

You find the answer by dividing,

⁸⁰⁰⁄₁₆₀= ʸ⁄₃₆₈

800 divided by 160 equals 5 which means the equation is y equals 5x

and 368x5=1,840

also, do you go to college park?

HELP ME PLEASE!!!!

Jake rewrites the expression 81x4 – 1 as a difference of squares so he can factor it. Which answer choice shows how Jake could rewrite the expression?

A.(9x)^4-1^2


B.(9x^2)^2-1^2


C.(9x)^4-1^4


D.(9x)^4-1^2

Answers

Answer:

B

Step-by-step explanation:

Can anyone please help me solve this??

Answers

Answer:

X=4 Y= -5

Step-by-step explanation:

Sand costs three times as much as rocks per pound. If sand is $9.60 per pound, how much are rocks per pound?

Answers

Answer:

Rock costs $3.20 per pound.

Step-by-step explanation:

Because sand costs three times as much as rocks per pound, you can determine the cost of rocks per pound by dividing the cost of sand per pound by three:

[tex]\frac{9.60}{3}[/tex] [tex]= 3.20[/tex]

Match the expression with an equivalent expression

6( n + 4 ) =

Answers

Answer:

6n + 24

Step-by-step explanation:

Use the distributive property.

6(n + 4) = 6 * n + 6 * 4 = 6n + 24

help me and ill give brainly

Answers

It would be

Hope this helps

Answer:

(-inf, 5)

Step-by-step explanation:

just the previous answer, in anothe r form

y
3
2
c
-4
-3 -2 -1
-1+
1 2 3 4
-2+
-3+
-4+
41
What is the slope of the line?

Answers

Answer:

1

Step-by-step explanation:

(1,1) to (2,2) and (2,2) to (3,3) and so on is (1,1)

Can someone please help me with this

Answers

Answer: x = 40

The equation you would write would be 2x + x + 60 = 180.

This is because you have to add all the angles inside the triangle in order to get 180°. Then, you solve the equation.

2x + x + 60 = 180
Add all the like terms.
3x + 60 = 180
Subtract 60 on both sides.
3x = 120
Divide 3 on both sides.
x = 40

Which number is a reasonable estimate for 637x35?

Answers

Answer:

20,000

Step-by-step explanation:

if you multiply those numbers you get 22,295 which rounds to 20,000

Estimate:

26k

Out of the answer choices you commented on another answer, that's the one I chose.

Identify the terms, like terms, coefficients,
and constants in 5n - 2n – 3 + n.

Answers

Answer:

5n - 2n - 3 + n

3n - 3 + n

3n + n = 3

4n = 3

N= 4 ➗ 3

N = 1.33

Step-by-step explanation:

A game store owner buys a Nintendo Switch game for $22.50 and sells it with a 40% mark up. What is the retail price?

Answers

Answer: $31.50

Step-by-step explanation:I think; $22.50 x .40=9

$22.50+9=$31.50

Identify the number of solutions for the equation below:

Answers

The answer is no solution because the slopes are equal.
Brainliest maybe:)
Have a good day!

Three hundred cars drove over a bridge in 23 minutes. At that rate, how
many cars would drive over the bridge in 138 minutes?

Answers

Answer:

1800

Step-by-step explanation:

300 cars in 23 minutes so 300/25 = how many cars each minute

that equals 13.04347....

so on your calculator multiply that by 138 which gives you 1800 cars

Answer:

138/23×300=1800cars drove over the bridge

Step-by-step explanation:

Eliza makes handmade ornaments. It takes her 4 hours to make 18 ornaments. How many ornaments can she make in
14 hours?

Answers

Answer: She makes 63 ornaments in 14 hours

Step-by-step explanation:

4 = 18

14 = x

Cross multiplication

4x = 18 x 14

4x = 252

x = 63

Answer:

She can make 63 ornaments in 4 hours

Step-by-step explanation:

she makes 4.5 in a hour so just times that by 14

Use a number line to order the numbers from least to greatest.

HELLLPPPP!!!!!

Answers

So the smallest is 8/25 because it’s .32 so put it on 0.32. Then 38% because it u divide 38 by 100, you get .38 so put it between .46 and .4. And the last one is 0.41. You put it next to 0.4

Really need this B is perimeter D is volume if you couldn't see it.​

Answers

Answer:

B

Step-by-step explanation:

yea

Answer:

a) area

Step-by-step explanation:

well you just need to find the carpet area. carpet is just for the floor, so you don't need the perimeter, volume is for 3D figures, and surface area is for the outside of an object. carpet is a 2D figure, so the answer is a) area :)

hope this helps!

Which of the following best describes the slope of the line below?

Answers

Answer:

It would be negative

Explanation:
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