After 6 days, the mass m, in grams, of
100 grams of a certain radioactive
element is given by the function
m(t) = 100(0.97). To the nearest percent,
what is the weekly decay rate of the
element?
A 3%
C 21%
B 19%
D 81%

Answers

Answer 1

Answer:

3%

Step-by-step explanation:

Sorry I have no step by step explanation at this time.


Related Questions

A motorcycle raced around a track at a speed of 110 miles per hour.

If the motorcycle raced for 0.5 hours, how many miles did it travel?

Answers

If it’s going 110mph, and the question if asking how many mph will it go for half an hour. Simply just take 110 divided by 2.
Which gives u 55

Find the value of x in the triangle shown below.
56°
31
x

Answers

X=93
All angles in a triangle equal 180...56+31=87
180-87=93

Stacy started with 40 dollars in a savings account that earns 5% annually. How much interest will she get in one year

Answers

Answer:

2 dollars

Step-by-step explanation:

5% interest is 1.05

1.05 times 40 equals 42

42-40 equal 2

So 2 dollars

Two baseball teams meet in a playoff series at the end of the regular season. Team A won 55 of 81 games played in its home stadium during the regular season, while Team B won 48 of 81 games played in its home stadium. The first two games of the series will be played in Team A's home stadium, the next two games in Team B's home stadium. In the absence of any other information, which expression is equal to the probability that Team A will win the first four games in a row?

Answers

Answer:

Assuming the statistics are independent of the visiting team, then probability of team A winning in home turf is P(A)=55/81, and winning as a visitor of team B is P(B)=(81-48)/81=33/81.

So winning all four games,

P = P(A)*P(A)*P(B)*P(B)

2.

Total volume = 9³ cm³ = 729 cm³.

Side of each of 3 new cubes

= cube root of (729 cm³ /3) cm

= cube root of (243) cm.

3.

Total number of ways to pick 4 balls out of 9

= C(9,4) = 9!/(4!5!)=126

Total number of ways to pick 4 blue balls = C(4,4) = 1

total number of ways to pick 4 red balls

= C(5,4) = 5

Number of ways of not choosing 4 red nor 4 blue = (126 - 1 - 5) = 120

Probability of not choosing 4 balls of the same colour is therefore ...?

please help ASAP will give brainleast to correct answer plus thank you!

Answers

Answer:

B

Step-by-step explanation:

Answer:

B. 0.8(9+w)

Step-by-step explanation:

By combining like terms you will get an equation of 7.2 + 0.8w. I noticed this could be simplified further by grouping and got answer B.

Matteo is working two jobs, making $15 per hour at the movie theater and $18 per hour washing cars. Last week Matteo worked a total of 30 hours and earned a total of $480. Determine the amount of hours Matteo worked at the movie theater and the cash wash.

Answers

Answer:

movie theatre = 20 hours

car wash = 10 hours

Step-by-step explanation:

this would be solved using simultaneous equation

let a = hours worked in theatre

b = hours spent wash cars

15a + 18b = 480 eqn 1

a + b = 30      eqn 2

multiply eqn 2 by 15

15a + 15b = 450 eqn 3

subtract 1 from 3

3b = 30

b = 10 hours

substitute for b in eqn 2

a + 10 = 30

a = 20 hours

Mike took an uber from his home to the airport. The driver charges an initial fee of $6 and $3 per mile. The total fare was $24 not including the tip. How many miles did Mike travel by uber on this ride? *

Answers

Answer:

About 5 miles

Step-by-step explanation:

At first, I thought it would be 6 miles because 6x3 is 18 plus the initial 6 dollars which is 24. However, it says that it does not include the tip, which means that Mike DID tip the driver. So there has to be some space for the tip. If it was 6 miles it would be 24 dollars, but there is no more space for the tip. So it has to be 5 miles, because that will be 21 dollars, and assuming the tip could be about 3 dollars, then that would total up to 24 dollars.

Is (2,21) a solution for y=7x? No Yes​

Answers

Answer:

No

Step-by-step explanation:

y=7x

21=7(2)

21=14

It is not since the values are not equal.

Brainliest? :o

No, the pair of coordinates (2,21) is not a solution for the equation; y=7x

Solution of an equation

According to the question;

The pair of coordinates given is (2,21).

Hence, by testing the coordinates in the equation; y=7x, we have;

21 = 7(2)

21 = 14.

Hence, since the equation above is not true, the pair of coordinates is not a solution of the equation.

Read more on solution of an equation;

https://brainly.com/question/1397278

Given that (-6,-6) is on the graph of f(x), find the corresponding point for the function f(2x).​

Answers

Answer: (-3,-6)

Step-by-step explanation:

Find the area of the figure shown below and type your result in the empty box.


Answers

Answer:

did u forget to add the actual question

Step-by-step explanation:

can you solve this !!

[tex] \sqrt{62 \times 31 \times 2} [/tex]

Answers

Answer:

62

Step-by-step explanation:

Step-by-step explanation:

hope it is helpful to you

find x to the nearest 10th help pls​

Answers

Answer:

5.9

Step-by-step explanation:

Marking brainliest.

Answers

Answer:

B. 173.25 cm^2

Step-by-step explanation:

just multiply them all.

Factor completely 2x^3 + 6x^2 + 10x + 30

Answers

Answer:

The factored expression is 2(x² + 5)(x + 3).

Step-by-step explanation:

Hey there!

We can use a factoring technique referred to as "grouping" to solve this problem.

Grouping is used for polynomials with four terms as a quick and easy factoring method to remove the GCF and get down to the initial terms that create the expression/function.

Grouping works in the following matter:

Given equation: ax³ + bx² + cx + dGroup a & b, c & d: (ax³ + bx²) + (cx + d)Pull GCFs and factors

Let's apply these steps to the given equation.

Given equation: 2x³ + 6x² + 10x + 30Group a & b, c & d: (2x³ + 6x²) + (10x + 30)Pull GCFs and factors: 2x²(x + 3) + 10(x + 3)

As you'll see, we have a common term with both sides of the expression. This term, (x + 3), is a valuable asset to the factoring process. This is one of the factors for our expression.

Now, we use our GCFs to create another factor.

List GCFs: 2x², 10Create a term: (2x² + 10)

Finally, we'll need to simplify this one by taking another GCF, 2.

Pull GCF: 2(x² + 5)

Now that we have this term, we need to understand that this could also be factored further using imaginary numbers, but it is also acceptable to leave it in this form.

Therefore, we have our final factors: 2(x² + 5) and (x + 3).

However, when we factor, we place all of our terms together. This leaves us with the final answer: 2(x² + 5)(x + 3).

Can someone plz help me

Answers

Answer:

X=37.6 because the 90 degree angle plus the 52.4 equals 142.4 the subtract that from 180 then ta da.

please tell me which ones to select! I can select more than one. Thank you!!!

Answers

Answer: B, D, E

Step-by-step explanation:

Substitute x in each expression, solve, and see if it is equivalent to 3/4. See answer above. Hope this was helpful! :)

A motorist takes 80 minutes to travel 120km. find his speed

Answers

Answer: 90km/hour

Step-by-step explanation:

The formula for speed is given as:

= Distance / Time

where,

Distance = 120km

Time = 80 minutes = 80/60 = 1 1/3 hours

Speed = Distance / Time

= 120 / 1 1/3

= 120 / 4/3

= 120 × 3/4

= 90km/hour

The speed is 90km/hour.

What is the range of the graph and please answer fast

Answers

Take the largest number and the smallest number which the largest is 16 and the smallest is 8 and subtract them 16-8 and you get 8 so it is 8!

You mix 1/2 cup of red paint for every 1/4 cup of blue paint to make 12 cups of
purple paint. How much red paint and
blue paint do you use?

Answers

4 cups of blue paint and 8 cups of red paint

explanation

to pour one cup of blue paint, two cups of red paint has to be poured.
since when you add both those it adds to 3
so multiply each by 4 to get 4 cups of blue paint and 8 cups of red paint

Find the area of the region bounded by the graphs of f(x)= x^3 + x^2 -6x and
g(x) = 2x - x^2.
A. (20/3)
B. 36
C.(148/3)
D. (256/3)

Answers

Might be A not sure though

Calculate the size of the exterior angles of a regular polygon which has interior angles of:175⁰

Answers

Answer: 5

Step-by-step explanation: 180-175=5

Pamela is 10 years older than Jiri. The sum of their ages is 54. What is Jiri's age?

Answers

Answer:

22

Step-by-step explanation:

multiple choice, need help with this ASAP; I'll give BRANIEST to whoever gets it right and no links​

Answers

Answer:

so it should be a,c,e, and b

Step-by-step explanation:

49s square root is 7 and 7 is an integer so check.

7 is a whole number check

7 is rational check

and 7 is a real number check.

How to Subtract this and put in Standard form?

Answers

Answer:

-12a2 + 9a - 5

Step-by-step explanation:

the 2 should be small

Please help
Nday(t)=300⋅(1.2)t

Complete the following sentence about the weekly rate of change in the locust population.

Round your answer to two decimal places.

Every week, the number of locusts grows by a factor of ______

Answers

Answer:

3.58

Step-by-step explanation:

how can you determine if two triangle angles are similar using their angle measurements???? In ur own words !!

Please help

Answers

Answer:

If two pairs of corresponding angles in a pair of triangles are congruent, then the triangles are similar. We know this because if two angle pairs are the same, then the third pair must also be equal. When the three angle pairs are all equal, the three pairs of sides must also be in proportion.

Step-by-step explanation:

hope this helps:0

what is the volume to the nearest tenth
A)34.4yds^2
B)34.38yds^3
C)34.4yds^3
D)34.38yds^2

Answers

Answer:

A

Step-by-step explanation:

3x + 12 = -3 What is the value of X

Answers

Answer:

x = -5

Step-by-step explanation:

i took algebra a couple years ago :)

Answer:

x=-5

Step-by-step explanation:

3x+12= -3

   -12    -12

(subtract 12 from both sides because you want the variable by itself)

3x= -15

(divide by 3 so you can get x completely by itself)

x= -5 (final answer)

A circular plate has circumference 33.3 inches. What is the area of this​ plate? PLZ HELP

Answers

Answer:

870.48

Step-by-step explanation:

Answer:

870.92

Step-by-step explanation:

Please help!
Task is simplify expressions.
This is direct image from teacher.

Answers

Okay so the squared sign I’ll put as the 2 next to an x just to let you know
1.5x2+16x+4
2.2x2-2x-8
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