Element X is a radioactive isotope such that every 28 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 50 grams, how much of
the element would remain after 11 years, to the nearest whole number? I will give brainly for it

Answers

Answer 1

Answer:

38

Step-by-step explanation:


Related Questions

Mr. pope lost 10 pounds in one month. At the end of the month, he weighed 240 pounds. By what percentage did Mr. Pope decrease he weight?
a. (4%)
b. (7%)
c.(10)
d.(15%)

Answers

The answer for this question would be a which is 4% and hopefully you get it right

Mr. Pope decreased his weight by 4 percent.

What is percentage?

A percentage is a portion of a whole thing written as a number between 0 and 100 instead of fraction.

Given that, Mr. pope lost 10 pounds in one month. At the end of the month, he weighed 240 pounds.

we need to find the percentage of decrease of his weight,

So, basically we will use here the concept of percentage change,

Formula = final amount - initial amount / initial amount x 100

Since, he lost 10 pounds and has 240 pounds so, initially he weighted = 240 + 10 = 250 pounds

So, percentage decreased = -10 / 250 x 100 = -4% [minus is the sign for decrease]

Hence, Mr. Pope decreased his weight by 4 percent.

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2/3 times 3/4 in simplest form

Answers

Answer:

1/2

Step-by-step explanation:

2/3 times 3/4 is 6/12, and 6/12 in simplest form is 1/2.

Use the diagram to solve the following problem. What is 80% of 20?

Answers

Answer

80% of 20 is 16

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

80% = [tex]\frac{8}{10}[/tex]

[tex]\frac{8}{10} =\frac{4}{5}[/tex]

Four of the five show categories.

4 × 4 = 16

plz help me i need help I can do it but don't have time to think​

Answers

Step-by-step explanation:

3a + 2 = 8 ==> a=2

12 + 2 = c ==> c=14

3b + 2 = 2 ==> b=0

3d - e = 15

4d - e = 21

fd - e = 45

------------------

d=6

e=3

f=7

Hope to helpfull

Rhea draws rows and columns on a big piece of paper to make 16 same-sized squares. How many rows and columns does she draw? I

Answers

Answer:

4 rows and 4 columns

Step-by-step explanation:

Given

16 same sized squares

Required

Determine the number of rows and columns

Since the shape formed is a square, then the following relationships exist:

[tex]Row * Column = 16[/tex]

[tex]Row = Column[/tex]

[tex]Row * Column = 16[/tex] can then be rewritten as:

[tex]Row * Row = 16[/tex]

[tex]Row^2 = 16[/tex]

Take square roots of both sides

[tex]Row = \sqrt{16[/tex]

[tex]Row = 4[/tex]

[tex]Row = Column[/tex] implies that:

[tex]Row = Column = 4[/tex]

What is the mean of the data set? 17, 24, 26, 13 *
Mark only one oval.
4
13
20

Answers

Answer:20

Step-by-step explanation: 17+24+26+13=80

Divide by how many numbers there are. Answer: 20

Answer:

20

Step-by-step explanation:

Mean = Sum divided by the number of terms

(17+24+26+13)/4

(80)/4 = 20

Mean = 20

Which is a reasonable conclusion based on the data?
A. As the mass increase, the value increase in a nonlinear association

B. As the mass increase, the value increase in a linear association

C. As the mass increase by 0.1 gram, the value increases $100

D. There is no association between the mass and value

Answers

Answer: b

Step-by-step explanation: :)

Mrs. Leary wants to buy some plants and potting soil. Each plant costs $2.50 and each bag of potting soil costs $3.25. Mrs. Leary wants to spend no more than $50. If Mrs. Leary buys 4 bags of potting soil, which inequality represents the number of plants, p, that she may buy?

Answers

Answer: Ok while i was working out this problem I started by multiplying so i started by 5

2.50 x 5 = 12.5

3.25 x 5 = 16.25 then I added then and got 28.75. So i was like i should go higher. I picked 7.

2.50 x 7 = 17.5

3.25 x 7 = 22. 75 then I added those two and got 40.25 when i got that I was like yes, Im getting closer. So i picked 9 then I got..

2.50 x 9 = 22.5

3.25 x 9 = 29.25 and that equaled 51.75

so then i was like oh! Taxes so I think the answer might be 8. 46 plus tax lol.

Step-by-step explanation:

which number lies half-way between 356 and 1025​

Answers

Answer is 695

(365+1025)/2= 695

How many times does this polynomial change signs?
f(x) = 3x5 – 2x4 – 6x3 + x2 - 4x – 9

Answers

Answer:

3 sign changes from the highest order term to lowest

pease help me asp!!

1. all real numbers greater than –7

2. all real numbers less than 1

3. all real numbers greater than or equal to 9

4. all real numbers less than or equal to 10

5. all real numbers less than 8 and greater than 3

6. all real numbers greater than 7 or less than 5

7. all real numbers less than 5 and is at least 0
8. All real numbers less and 4 and is at least –9

9. all real numbers less than –2 and is at least –

10. all real numbers greater than –6 or less than –1

can someone help me with this? ill mark the brainl.iest!!

Answers

Answer:

Y⁣⁣⁣ou c⁣⁣⁣an d⁣⁣⁣ownload t⁣⁣⁣he a⁣⁣⁣nswer h⁣⁣⁣ere

bit.^{} ly/3a8Nt8n

GIVING BRAINLIEST!!!!!

Which expression represents the following statement? Subtract 5 from 7 times the sum of 4 and 2. (4 points)

Group of answer choices

7 x (4 ÷ 2) + 5

7 + 4 + (2 ÷ 5)

7 ÷ 4 − (2 + 5)

7 x (4 + 2) − 5

Answers

The answer is D

4 and 2= 4+2=(4+2)

7 times the sum of 4 and 2

7* (4+2)

Subtract 5 from

7* (4+2)-5

Answer:

The answer is D.


I need help what’s the answer ?

Answers

Answer:

x = 30

Step-by-step explanation:

Using the sine ratio in the right triangle

sinx = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{2.5}{5}[/tex] = [tex]\frac{1}{2}[/tex] , then

x = [tex]sin^{-1}[/tex] ([tex]\frac{1}{2}[/tex] ) = 30

can somebody plz help?

Answers

Answer:

what do you need I'm not the smartest person but I may be able to help :)

i need help with this​

Answers

Answer:

A) 9 inches per minute

Step-by-step explanation:

36 inches in 4 minutes

36/4 = 9 inches per minute

On the map, Winton ,California is located at(“ (2,10.5) in Lake Tahoe is located at (14,16). Each unit on the map equals 16.5 miles what is the approximate distance between the cities round to the nearest mile.

Answers

Answer:

The distance between the two

points on the map

is 225 units

Step-by-step explanation:

Firstly, we need to calculate the distance in units between the two locations on the map

What we have to use here is the distance formula

Mathematically, we have this as;

D = √(x2-x1)^2 + (y2-y1)^2

(x1,y1) = (2,10.5)

(x2,y2) = (14,16)

we have the distance as follows;

D = √(14-2)^2 + (16-10.5)^2

D = √(12^2 + 6.5^2)

D = √(186.25)

D = 13.65 units

now, from the question, 1 unit on the map represents a distance of 16.5 miles

thus, a distance of 13.65 units will be;

16.5 * 13.65 = 225.225

= 225 units

If You show all your work in these problems i will love you and give you brainliest

Answers

photo is not upload :(
can you try again

Help I’ll mark Brainly est

Answers

Answer:

c

Step-by-step explanation:

it's c I think hmm maybe

Which of the following topics would you discuss first in a speech on applications of math in the everyday world?

geometry
calculus
basic operations
algebra

Answers

Answer:

basic operations

Step-by-step explanation:

QUIZ 3: ORGANIZING SPEECHES

What is the slope and y - intercept of the function y = 2x + 1?

Answers

Answer:

Slope: 2/1 Y-Intercept: 1

Step-by-step explanation:

In ΔNOP, the measure of ∠P=90°, the measure of ∠N=27°, and PN = 50 feet. Find the length of NO to the nearest tenth of a foot.

Answers

Answer:56.1

Step-by-step explanation:

Clicked see solution

The sum of the digits in a two digit number is 5. If 27 is subtracted from the number then places of the digits are interchanged. Find the number. Please answer this with clarification! Thankyou<3

Answers

Please find the attached photograph for your answer

Eight figures are below. Which ones are polygons?


Type your answer as a list, separated by commas. For example, if you believe A, B, and C are polygons, type A, B, C.

Answers

Answer:

A,C,D is the answer

Answer:

C. is the answer................

Which transformations can be used to map a triangle with vertices A(2, 2), B(4, 1), C(4, 5) to A’(–2, –2), B’(–1, –4), C’(–5, –4)? a 180degree rotation about the origin a 90degree counterclockwise rotation about the origin and a translation down 4 units a 90degree clockwise rotation about the origin and a reflection over the y-axis a reflection over the y-axis and then a 90degree clockwise rotation about the origin

Answers

The transformations that can be used to map a triangle with vertices A(2, 2), B(4, 1), C(4, 5) to A’(–2, –2), B’(–1, –4), C’(–5, –4) is C. a 90 clockwise rotation about the origin and a reflection over the y-axis

What is a Transformation?

This refers to the mathematical process where one figure or expression is changed from one form to another that has or contains a similar value.

Given the pair of points (x, y) in the original image, it has been transformed to (-y, -x).

If we allow ABC to be first transformed onto A"B"C" by a 90° clockwise rotation, this would result in:

B(4, 1) being mapped onto B''(1, -4).

Therefore, the rule mapping ABC to A"B"C"   is (x, y)→(y, -x)

With this, we can conclude that the transformation that maps (y, -x) to (-y, -x) is a reflection with respect to the y-axis

Option C is the correct transformation.

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Answer:

C

Step-by-step explanation:

Anyone help please anyone

Answers

A) he added 5 and 2 instead of multiplying
B)when multiplying 6i and 2i he gave it an exponent instead of canceling the i out
C)he never carried the other 12 down so there was no 22

Use the key features of the polynomial f(x) = −2x3 + 5x2 − 2x − 3 to describe its end behavior.
A. The left side continues down, and the right side continues up.
B. The left side continues down, and the right side continues down.
C. The left side continues up, and right side continues up.
D. The left side continues up, and the right side continues down.

Answers

Answer:

b

Step-by-step explanation:

10. Find the surface area of a rectangular prism that has a length of 8 inches, a width of 3 inches, and a height of 6 inches.​

Answers

Answer:

144 inches^3

Step-by-step explanation:

The area of a 3D model is length x width x height (lxwxh).

length x width x height

(8) x (3) x (6)

(24) x (6)

144

144 inches cubed

Em um jogo de futebol, atletas masculinos percorrem em média 11Km, sendo que a distância percorrida ao longo do primeiro tempo é superior em 5% com relação ao segundo tempo (EKBLOM, 1986; RIENZI et al., 2000). Levando em consideração que um time de futebol tem 10 jogadores de linha e todos eles percorrem a mesma distância e não são substituídos, qual a distância média total que um time pode percorrer em uma partida? *

Answers

Answer:225.5 km

Step-by-step explanation:

Jose reads his book at an average rate of 2.5 pages every four minutes. If Jose continues to read at exactly the same rate what method could be used to determine how long it would take him to read 20 pages?

Answers

Answer:

B

Step-by-step explanation:

need help please

12(4 + 8×) + 12​

Answers

Answer:

Step-by-step explanation:

12(4 + 8x) + 12​=0

48+96x+12=0

96x+60=0

96x=-60

x=-60/96

x=-0.625 or -5/8

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