A 78 gram sample of Uranium loses half of its mass each year. What is the Exponential equation??

A.
[tex]y = 78(1.5) {}^{x} [/tex]
B.
[tex]y = 78(0.5) {}^{x} [/tex]
C.
[tex]y = 78(2) {}^{x} [/tex]

Answers

Answer 1

Answer: B , 78(0.5) ^x

Step-by-step explanation: it’s being multiplied by 0.5, which is half.


Related Questions

The length of a living room is 3 feet more than its width. The area of the living room is 270 square feet. Write an equation that represents the area of the living room​

Answers

Answer:

if the length is longer than width then it means its a rectangle...and equation of the area is length×breath ... therefore 270=x×3x

1/3x − 1/3
Factored please help ;)

Answers

Answer:

1/3(x-1)

Step-by-step explanation:

1/3x - 1/3

Both terms have a greatest common factor of 1/3

1/3 *x - 1/3 *1

Factor out a 1/3

1/3(x-1)

Find the area of a circle with a diameter of 12 cm.


Use π = 3.14 in your calculations.




A

37.68 cm²


B

113.04 cm²


C

144 cm²


D

452.16 cm²

Answers

Answer:

B

Step-by-step explanation:

The formula for area for a circle is [tex]a = \pi[/tex] x r^2

A home was sold in 2010 for $250,000. Its value
depreciated by 3.4% yearly. What is the value of the
house in 2012?

Answers

Depreciation formula: starting value x (1-rate)^time

250,000(1-0.034)^2 years

250000(0.996)^2= $233,289

The answer is $233,289

Answer:

$233,289

Step-by-step explanation:

250000 *.034=8500

250000-8500=241,500

repeat

F is directly proportional to A. if F=72 when A=9 find F when A=7

Answers

56 is your answer.

Equation for direct proportion is y = kx where k is the constant of proportionality. For your letters, it’s f = ka

We know 72 =k9, so k = 8
Then they want you to solve
f = 8•7
f = 56

If 12% of the air leaks out of Brian's bicycle tire every day, what percent of the air will be left after 2 days? After a week? Round your percents to 2 decimal places.

Answers

Answer:

77.44%

49.87%

Step-by-step explanation:

If 12% leaks everyday, on the first day 12% would leak, leaving 100 - 125 = 88% of air

on the second day, 12% of 88% would leak = 0.88 x 0.12 = 0.1056

Air left on the second day = 88% - 10.56% = 77.44%

After a week = (100 - 12%)^7 = 49.87%

Number 4 5 6 7 pls help!!!!!

Answers

Answer:

Here ya go!

Step-by-step explanation:

(look at picture below

PLEASE HELP ME PLEASE PLEASE PLEASE

Answers

Answer:

Step-by-step explanation:

l/100 km   means   liters per 100 Kilometre. How many liters a car need for traveling 100 km.

Km/l  means  liter per km

Find the quotient (PLEASE HELP)

Answers

[tex]{ \dashrightarrow{ \sf{ \green{ \frac{ {x}^{2} - 5x - 36}{x + 2} \div ( {x}^{2} - 18x + 81)}}}} \\ \\ \\ \\ { \dashrightarrow{ \sf{ \green{ \frac{( {x}^{2} - (9x - 4x)- 36)}{x + 2} \div ( {x}^{2} - (9x + 9x) + 81)}}}} \\ \\ \\ { \dashrightarrow{ \sf{ \green{ \frac{ {x}^{2} - 9x + 4x - 36 }{x + 2} \div( {x}^{2} - 9x - 9x + 81)}}}}[/tex]

[tex]{ \dashrightarrow{ \sf{ \green{ \frac{x(x + 4) - 9(x + 4)}{x + 2} \div (x(x - 9) - 9(x - 9))}}}} \\ \\ \\ { \dashrightarrow { \sf{ \green{ \frac{(x + 4)(x - 9)}{(x + 2)} \div ((x - 9)(x - 9))}}}} \\ \\ \\ { \dashrightarrow{ \sf{ \green{ \frac{( x + 4)(x - 9)}{(x + 2)(x - 9)(x - 9)}}}}} [/tex]

[tex]{ \dashrightarrow{ \underline{ \sf{ \green{ \frac{(x + 4)}{(x + 2)(x - 9)}}}}}} \\ \\ \\ [/tex]

The Clayton family and the Mercado family are seeing a movie together in the theater. At the concession stand, Mr. Clayton paid $20 for 4 large popcorns and 2 large drinks that his family will share. Mrs. Mercado bought 4 large popcorns and 4 large drinks and paid $28. How much does each item (popcorn & drink) cost?

Answers

Answer:

Popcorn costs 4. Drink costs 2.

Step-by-step explanation:

4x4=16

2x2=4

16+4=20

help help help help help help help help help help help help

Answers

Answer: 25

Step-by-step explanation:

I’m posting too many


Solve each equation 51/2=d +1/4 what is d?

Answers

D = 101/4
if you need it in decimal form it is 25.25
if you need it in mixed number form it is 25 1/4

A canister holds 3 blue pens, 4 black pens, 2 red pens, and 6 pencils. The simplified ratio of ALL the pens to pencils is

Answers

Answer:

The simplified ratio of ALL the pens to pencils is

= 3:2

Step-by-step explanation:

A canister holds 3 blue pens, 4 black pens, 2 red pens, and 6 pencils.

Step 1

Sum of all the pens is:

Blue pens + Black pens + Red pens

= 3 + 4 + 2

= 9 pens

Number of pencils = 6 pencils

Step 2

The simplified ratio of ALL the pens to pencils is

Pens : Pencils

= 9 : 6

= 3:2

b) Here are the first four terms of another sequence.
7
11 15 19
Write an expression for the nth term of this sequence.

Answers

Answer:

[tex]a_{n}[/tex] = 4n + 3

Step-by-step explanation:

There is a common difference between consecutive terms, that is

11 - 7 = 15 - 11 = 19 - 15 = 4

This indicates the sequence is arithmetic with nth term

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 7 and d = 4 , then

[tex]a_{n}[/tex] = 7 + 4(n - 1) = 7 + 4n - 4 = 4n + 3

What number 10times greater than 0.03

Answers

Answer:

A number that is 10 times greater than 0.03 A number that is 1000 times greater than 3 1 10 the value of 30 3 1 100 of 3 0.03 so the  number that is 10 times greater than is 0.3

but if you want to know they number that 0.03 is ten times greater then  its 0.003

Step-by-step explanation:

Choose the solution to this inequality.

Answers


It’s B

Have a good day and here is a bobcat

The answer is c because 8-4is 4 and 3 (dominator) stays the same

If x and y vary inversely and x = 1 when y = 11, find x when y = 5.5.

Answers

Answer:

x = 2.

Step-by-step explanation:

y = k/x

11 = k/1

so k = 11

y = 11/x

When y = 5.5:

5.5 = 11/ x

x = 11/5.5

= 2.

The values of x and y vary inversely, if the value of y is 5.5 then the value of x will be equal to 2.

What is an arithmetic operation?

The four fundamental operations of arithmetic are addition, subtracting, multiplying, and dividing two or more numbers. Included is the study of integers, especially the order of operations, which is essential for all other aspects of mathematics, notably algebra, information management, and geometry.

As per the information provided in the question,

y = k/x

11 = k/1

k = 11

y = 11/x

If y = 5.5,

5.5 = 11/ x

x = 11/5.5

x = 2.

To know more about  arithmetic operations:

https://brainly.com/question/13585407

#SPJ2

Lin's father is paying for a $20 meal. He has a 15% off coupon for the meal. After the discount, a 7% sales tax is applied. What does Lin's father pay for the meal? Explain or show your reasoning.

Answers

Answer:

Check pdf

Step-by-step explanation:

PLZ HELP ME :( you can pick neither or both or one of the triangles in the screenshot

Answers

5+5y= 47
A^2 - 47 = ?

What is the total surface area of the figure below?
6 cm
7 cm
13.1 cm
359.1
0 275,1
400
317.1

Answers

Answer:

275.1 I'm so sorry if it is wrong dont come at me please

Rewrite the expression in the form x^n

Answers

Answer:

[tex]x^{-2}[/tex]

Step-by-step explanation:

[tex]\frac{x^{6}}{x^{8}}\\ = x^{6-8} = x^{-2}[/tex]

jaela is buying a used car for $6832. her loan is for 30 months at 1.35% in interest. how much will her car payment each month?

Answers

Answer: 232$ Per month

Step-by-step explanation:

The dot plot shows a random sample of the number of fish caught and released by 30 participants during a two-day fishing derby. Two dot plots show the number of fish caught on days 1 and 2. The dot plot for day 1 has dots as follows: 3 above 1, 6 above 2, 6 above 3, 6 above 4, 6 above 6, and 3 above 6. The dot plot for day 2 has dots as follows: 3 above 1, 3 above 2, 4 above 3, 6 above 4, 7 above 5, and 7 above 6. Use the mean value of each data set to make an inference about the number of fish caught each day. On average, most participants caught and released 5 or more fish. More participants caught 6 fish than any other number. The same participants who caught and released 1 fish the first day caught and released 1 fish the second day. On average, participants caught and released more fish on Day 2.

Answers

A8-436873-658756780579y5

Step-by-step explanation:

Solve the quadratic equation for the solutions.
f(x) = 2x^2 - 6x + 10

Answers

I’m a little rusty but I got 8

What is the sum of the first eight terms of a geometric series whose first term is 3 and whose common ratio is ?

Answers

Answer:

I think your answer would be 36

Answer:

28

Step-by-step explanation:

How to do surface area- cylinder worksheet

Answers

Answer:

to find surface area of cylinder

A=2πrh+2πr²

Step-by-step explanation:

Can someone help me with this. Will Mark brainliest. Need answer and explanation/work. Thank you!

Answers

Answer:

I hope this helps a little bit.

5.5% tax on $20 is $

Answers

Answer: $18.90

Step-by-step explanation:

Answer:

$1.1

Step-by-step explanation:

= 5.5% × $20

= $1.1

Show all of your work.
a Jon works at T-Shirts R Us. Yesterday, he unpacked 36 boxes of new shirts. Each
box had 24 shirts in it. How many shirts did he unpack?

Answers

864 shirts :) 36x 24

Please help, If you can also explain the steps you used to solve this that would be great.

Answers

Answer:

24¾

Step-by-step explanation:

8/18=11/x

x=11×18/8

x=198/8

x=24¾

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