Answer:
Approximately 110.6 grams remain at the beginning of the 17th day.
Step-by-step explanation:
At the beginning of the first day, the mass of the substance was 500 grams.
It decreases by 9% per day.
And we want to determine the mass of the sample at the beginning of the 17th day.
First, we need to find our ratio of decay. Since it decreases by 9% or 0.09 each day, the mass of the substance after each subsequent day will be 100% - 9% or 1 - 0.09 or 0.91 of the previous day.
We can write a exponential function to model this. An exponential function has the form:
[tex]f(x)=ar^x[/tex]
Where a is the initial term and r is the rate.
Let x represent the number of days after the first day. Substitute 500 for a and 0.91 for r:
[tex]f(x)=500(0.91)^x[/tex]
The 17th day is 16 days after the first day. So, the amount of mass remaining on the beginning of the 17th day is when x = 16. Substitute:
[tex]f(x)=500(0.91)^{16}[/tex]
Approximate. Therefore:
[tex]f(x)\approx110.6\text{ grams}[/tex]
Approximately 110.6 grams remain at the beginning of the 17th day.
help pls what is 10,000 - 9,745 =
Answer:
10,000 - 9,745 = 255
Step-by-step explanation:
UwU Hope that helps
Answer: 255
→Hope this helps!←
write the following comparison as a ratio reduced to lowest terms.
40 nickels to 50 dimes
Answer:
2.5 : 2
Step-by-step explanation:
Answer:
$2 : $5
Step-by-step explanation:
40 nickels = $2
50 dimes = $5
how many distinct prime divisors does 132660 have
please help!!!1
Answer:
6?
Step-by-step explanation:
50 POINTS!! WILL MARK BRAINLIEST!!! Is ΔP'Q'R' a 180° rotation about the origin of ΔPQR? Use the drop-down menus to explain your answer.
Answer:
No that would be a 90 degree
Step-by-step explanation:
solve for x i’ll give brainlest to the right answer
Answer:
value of x is 11
Step-by-step explanation:
hope it helped!!!
How many points of intersection do the graphs of these two equations have [2x+3y=7 4x+6y=14
Answer:
infinitely many they are the same line
Step-by-step explanation:
A pool can be filled by one pipe in 6 hours and by a second in 12 hours . How long will it take using both pipes to fill the pool?
Answer:
4 hours
Step-by-step explanation:
Part of the pool filled by first pipe in an hour = 1/6
Part of the pool filled by second pipe in an hour = 1/12
Part of the pool filled by first pipe and second pipe in an hour = 1/6 +1/12
[tex]=\frac{1*2}{6*2}+\frac{1}{12}\\= \frac{2}{12}+\frac{1}{12}\\\\=\frac{3}{12}\\\\=\frac{1}{4}[/tex]
Time taken by both the pipes to fill the pool = 4 hours
What is the area of the real object that the scale drawing models?
Scale factor: 1:3
Area =
40 square cm
Answer:120 square cm
Step-by-step explanation:
40 x 3
Dave is splitting 3 quarts of ice cream with 9 members of the team. If the ice cream is split evenly, how many cups will each person get?
Answer:
Its will be 27 if we are multiplying
Step-by-step explanation:
But I don't think so but if u look up 3 quarts to 9 it will be 4.75 so yea HOPE THIS HELPS!
Find the area of the shape below.
Answer:
The is 5000 centimeters^2??
Which is the following statements CANNOT be true?
Midpoint, as the word suggests, means the point which lies in the middle of something. The correct option is C. P cannot be the midpoint.
What does a midpoint mean?Midpoint, as the word suggests, means the point which lies in the middle of something. The midpoint of a line segment means a point which lies in the mid of the given line segment.
Since EN≅NG, therefore, the length of the two segments will be equal, which means P can not be the midpoint of the line segment EG.
Hence, the correct option is C. P cannot be the midpoint.
Learn more about Midpoint:
https://brainly.com/question/5127660
#SPJ2
The circle graph shows Lenora's activities
during 10 hours at school.
School Activities
Homeroom 7.5%
Newspaper
7.5%
Gym
10.0%
Academic
Classes
50.0%
Lunch 5.0%
Softball
Practice
20.0%
How many more hours does she spend at
softball practice than in homeroom?
Answer:
60.0 I think
Answer:
1.25 hours or 1 hour and 15 minutesStep-by-step explanation:
The difference in time % softball practice than in homeroom:
20% - 7.5% = 12.5%Convert the difference into hours:
12.5*10/100 = 1.25 hours or 1 hour and 15 minutesplease help me fast please
leo has 1 1/3 cups of sugar. He uses 3/4 cups of sugar in a recipe. How much sugar does leo have left
how do I show my work?
Answer:
The answer is B 7/12
I attached a picture for your work.
It cost Andrew $21 to buy 7 binders. At this price, how much would it cost him to buy 4 binders?
15 cm
6 cm
The length is
meters, the width is
meters, and the area is
square meters.
Answer:
90????? There is not a lot of context. 90 is the area
ILL GIVE THE BRAINLIEST pls help me with this question EVERYTHING IS IN THE PICTURE PLS HELP DUE TODAY IF YOU PUT A WRONG ANSWER ILL REPORT YOU FASTER THAN ASSIGMENT IS DUE
Answer: the correct answer should be 160 but you said that didnt work so try 480
Step-by-step explanation:
I just did base times Hight 8*10 which is 80*6=480
hoped this helps:))
Answer:
80
Step-by-step explanation:
V= Bh/3
Area of base= (L × W) ÷2
(8×6)÷2 = 24
Multiply by height
24×10=240
Divide by 3 (since its a pyramid therefore has 3 sides)
240/3=80
80 is your answer
The census is a survey of the population that gathers various details about individuals, such as age. This survey observed
that 155 out of every 200 people were 18 years old or older, Determine the probability of randomly selecting a person that
was 18 years old or older,
Express your answer as a fraction,
Answer:
31/40
Step-by-step explanation:
Just simplify the fraction
Answer:
31/40
Step-by-step explanation:
Simplify
How many more sides does a quadrilateral have than a triangle?
Answer:
1
Step-by-step explanation:
Quadrilateral=4sides
Triangle=3sides
Difference=4-3=1
Write down the next two terms into the given sequence :
-1; 1; 3 ;
Answer:
5 ;7
explantion:
-1+2=1
1+2=3
3+2=5
5+2=7
the pattern is +2
Naomi receives a base weekly salary of $225 plus a commission of $50 for each cable service
contract she gets signed. A 6% tax is taken out of each paycheck she receives. If Naomi had
9 new clients sign contracts during her last 2-week pay period, how much money in taxes
should she expect to be taken out?
Answer:
$40.50 will be taken out in taxes.
Step-by-step explanation:
First, solve for how much Naomi will receive in a paycheck:
$225 + $50(9)
$225 + $450
$675
Now, solve for 6% tax:
$675 × 0.06
$40.50
What is the distance between the points (-4 , -12) and (-4 , 20) in the coordinate plane?
Answer:
26 units i think
Step-by-step explanation:
Answer:
32 units
Step-by-step explanation:
from -12 to 0 it is 12 units, and from 0 to 20 it is 20 units.
12 + 20 = 32 units
The measure of angle ABC is 84, find the measure of angle ADC.
Answer:
Step-by-step explanation:
uhhh i think so its 84 is abc but adc is missing try 48 i dont know but i try
A child tosses a baseball up into the air. On its way down, it gets caught in a tree for several seconds before falling back down to the ground.
Answer:
what is the question because I don't understand what you mean
Put the known terms together on one o
equation.
Example: 3x + 6 = 30
3x = 30 - 6
1. 2b10 =12
2.8 + 5x = 41
3 6 - 42 = 12.
4. 3n = 60 +n
5. 7a+ 5 = 54
ale
ACTIVITY 2:
Solve and check. Show your complete solutions.
1. x+ 5 = 2
2 X – 10 = 22
3. 41 + 3x = -29-18
4. x-27 = 8 + 10
5. 5x + (-55) = 20
ACTIVITY 3:
Solve each problem. Show your solution.
1. What is the number if twice a number is increased by 9
2. If twelve less than a thrice a number is 3, what is the n
Geometry Question! WORTH 20 POINTS
Answer:
x = 65
Explanation:
A whole circle equals 360*
half of that is 180*
180 - 115 = 65
Simplify 16m6-15mn+m6+17mn
Answer:
[tex]17m^6 + 2mn[/tex]
Step-by-step explanation:
[tex]16m^6 -15mn +m^6 + 17mn[/tex]
Combine like terms, rewrite the equation and perform the operations between the coefficients,
[tex]16m^6 +m^6 -15mn+17mn[/tex]
[tex]17m^6 + 2mn[/tex]
Tivo families planned to go to the zoo. The entry ticket for one adult was $7.31 and
the entry ticket for one child was $5.66. There were two adults in the group. The
families intend to spend no more than $46.00. What is the greatest number of child
tickets that can be purchased?
Answer:
5 children
Step-by-step explanation:
Solve
$7.31 x2 = $14.62
$46 - 14.62 =$32
5.66 divided by 5 = 28.3
5.66 divided by 6 = 33
$33 is bigger than $31
Therefore, the greatest number of children tickets can be purchased is only 5.
Mihai a măsurat cu pasul său latura unui lot de pământ de forma unui pătrat
şi a constatat că ea cuprinde 93 de paşi. Care este lungimea gardului care
împrejmuieşte lotul dacă Mihai, făcând 3 paşi, parcurge exact 2 m?
Răspuns:
63 metri.
Explicație pas cu pas:
Dat fiind :
Numărul de pași parcurși = 93
3 pași făcuți de Mihai = 2m
Prin urmare, 93 de pași sunt echivalenți cu:
(93 ÷ 3) * 2m
31 * 2 = 63 m
Prin urmare, lungimea laterală a parcelei pătrate = 63 m
Prin urmare, lungimea gardului care împrejmuiește lotul pătrat = 63m
If oranges are on sale for $7.27 for 5 lbs, how much would it cost you to buy 2 lbs of
oranges?
a car is moving 70 miles per hour. how far does it travel in 16 seconds
Answer is what in miles
PLEASE HELP ME!!!!
Answer:
0.311 miles
Step-by-step explanation:
Convert 16 seconds to hours :
16 /60×60
= 16÷3600
= .004444hrs
Distance = Speed × time
= 70 × 0.00444444
= 0.311 miles