Answer:
There are 2,000 grams left after 300 years.
Step-by-step explanation:
Giving the following information:
The half-life of a radioactive substance is 200 years. There are 8000 grams of the substance initially.
First, we need to calculate the reduction of the substance each year:
Yearly reduction= 8,000/400= 20 grams per year
Now, for 300 years:
300 year reduction= 20*300= 6,000
There are 2,000 grams left after 300 years.
Find the slope and the y-intercepts of the equation below.
Answer: slope is -3/8 y intercept (0, 31/8)
Step-by-step explanation: use the slope intercept form y = mx + b to find slope and the y intercept
Will mark barinliest!!!!!!
Let g(x) = -2(3x + 4)(x - 1)(x – 3)2 be a polynomial function.
1. Sketch a graph of the polynomial.
2. Name all horizontal and
vertical intercepts of the graph.
3. State the end behavior of g.
Answer:
Hope this helped a little :)
Step-by-step explanation:
The all horizontal and vertical intercepts of the graph are x-intercept(s): (-4/3, 0), (1,0), (3,0) and y-intercept(s): (0,72).
The given function is g(x) = -2(3x+4)(x-1)(x-3)².
What is the function?Functions are the fundamental part of the calculus in mathematics. The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.
1) The sketch a graph of the polynomial is given below.
2) To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.
x-intercept(s):
(-4/3, 0), (1,0), (3,0)
y-intercept(s): (0,72)
3) Use the degree and the leading coefficient to determine the behavior.
Falls to the left and falls to the right
Therefore, the all horizontal and vertical intercepts of the graph are x-intercept(s): (-4/3, 0), (1,0), (3,0) and y-intercept(s): (0,72).
To learn more about the function visit:
https://brainly.com/question/28303908.
#SPJ2
round 2577.8 to the nearest tenth
Answer:
2578
Step-by-step explanation:
Answer:
2578
Step-by-step explanation:
Use the context of a 24-pack of soda to explain why 3/8 is NOT equivalent to 4/12.
Answer:
Step-by-step explanation:
if we're going by a 24 pack of soda, 3/8 would be 9 sodas while 4/12 is a third, which would be 8 sodas
Help me i cant understand this!!!
Answer:
What grade math is this?
Step-by-step explanation:
This math is hard.
What translation vector translates A (-2, 7) to A ( 5, -1)
Answer:
(3,6)
the answer is (3,6)
HURRY PLEASE!!!!
the question had no answer choices sorry
Answer:
27°Step-by-step explanation:
The angle at the intersection of lines q and r is 90° as they are perpendicular
117° is the exterior angle of the triangle
Exterior angle is:
117° = 90° + x as per its propertySolving the equation we get:
x = 117° - 90°x = 27°Answer: 27
Step-by-step explanation: the angle of the chart x=27
Given the definitions of f(x) and g(x) below, find the value of (gof)(9).
f(x) = -2x + 14
g(x) = 2x2 - 6x – 2
Answer:
The value of (gof)(9)=54
Step-by-step explanation:
We are given:
[tex]f(x) = -2x + 14\\g(x) = 2x^2 - 6x - 2[/tex]
We need to find (gof)(9).
To find (gof)(9) first we will find g(f(x)) and then put x=9
Finding g(f(x))
By putting value of f(x) into g(x) i.e
[tex]g(f(x))=2(-2x+14)^2-6(-2x+14)-2[/tex]
Now putting x=9
[tex]g(f(9))=2(-2(9)+14)^2-6(-2(9)+14)-2\\g(f(9))=2(-18+14)^2-6(-18+14)-2\\g(f(9))=2(-4)^2-6(-4)-2\\g(f(9))=2(16)+24-2\\g(f(9))=32+24-2\\g(f(9))=54[/tex]
so, the value of (gof)(9)=54
Please help me I’ll give u brainliest
Answer:
its the last one
Step-by-step explanation:
because the percent you have to turn it in to a decimal.
What are the steps to solving the inequality g+2/-3<-2
Answer:
g< -4/3
Step-by-step explanation:
Add 2/3 to both sides.
g+2/-3 + 2/3 <-2 + 2/3
g< -4/3
What is the image of the point (-5, 6) after a rotation of 90°
counterclockwise about the origin?
Answer:
(-6, -5)
Step-by-step explanation:
rule for 90° counterclockwise about the origin:
(x, y) => (-y, x)
so:
(-5, 6) => (-6, -5)
Write an equation of the line with the given slope and y-intercept:
m = 2, b = negative three-fourths
a.
y = negative 2 x + three-fourths
b.
y = 2 x minus three-fourths
c.
y = negative 2 x minus three-fourths
d.
y = 2 x + three-fourths
Please select the best answer from the choices provided
A
B
C
D
Answer:
It's B
Step-by-step explanation: I got it wrong and saw the answer.
To solve 1/3 divided by 9 James thinks of dividing a loaf of bread
Answer:
it would be 0.3 with bar notation
Step-by-step explanation:
Answer:
1/ 27
Step-by-step explanation:
Hope it helps
Jason plays the tuba 30 minutes a day. Which expression shows how many minutes Jason practiced in d days?
A) 30 + d
B) 30 - d
C) 30 ÷ d
D) 30d
John spent 2 hours out of an 8 hour day, painting a car. What percentage of John’s day would this be equal to?
Answer:
john's just spend 2h out of 8 so thats equal 6h that means he have a 6h days
Step-by-step explanation:
2-8=6
The average person walks♀️the equivalent of five times around the world in their lifetime. true or false
Answer:
True
Step-by-step explanation:
Doing the math, the average person with the average stride living until 80 will walk a distance of around 110,000 miles. Which is the equivalent of walking about 5 times around the Earth, right on the equator.
Answer:
True
Step-by-step explanation:
Help I’m not sure please what is the first term in the parentheses
4x+12 so I think the answer for the parenthesis would be 12
(Pls help me ASAP i will give brainliest!! Also, pls write at least 3 sentences to explain your reasoning :) )
12,400 x one and one fifth = ________. Will the product of this equation be less than or greater than 12,400? Explain your reasoning.
Answer:
the answer is 14,880 and its bigger :D 14880>12400
Step-by-step explanation:
Answer:
14880
Step-by-step explanation: I think that it would be greater to me because 14 is bigger than 12.
factor 6x^6+4x^4+3x^3+6x
help me answer these questions asap
Answer:
the corc is 3/4 it means that 3 gallons leak every 4 minutes
HelPPpPp meEeeEE PlEaAsE
Answer:
The first option and the fourth one I believe to be the answers
Step-by-step explanation:
PLZ HELP ME FAST
The table shows the ratio of caramel corn to hot pepper corn in a bag. What is the constant of proportionality? (4 points)
Hot Pepper Corn Caramel Corn
5 8
10 16
15 24
Answer Options
a-3
b-8
c-1.6
d-0.625
Answer:
A-3 because 5+8=3, 10+3 doubled=16, and so on so on
Step-by-step explanation:
Answer:
It is c, 1.6
Step-by-step explanation:
To find the constant of proportionality, you divided y by x. 8 divided by 5 is 1.6. 16 divided by 10 is 1.6 24 divided by 15 is 1.6.
So therefore it is c, 1.6 :)
Help me help me gain
Answer:
Let's look at the factors of 28.
1,28
2,14
4,7
We see that 4 and 7 add to make 11, but not -11. Well, we can just make both of them negative and then it will be -11 and their product will still be 28. Our numbers are -4 and -7.
the 2 numbers are 5, and 10
Step-by-step explanation:
CORRECT ME IF I AM WRONG!!
Answer:
The first one is (7,4) and the second one is (5,20).
[Hope it helps.]
A class collects $218.43 for a field trip. If there are 27 students in the class, what is the average amount of money each student collected
Please hurry
Answer:
$8.09
Step-by-step explanation:
To find the average you have to divide so 218.43/27 is 8.09
A city phone book has 86 pages filled with residents' names. There are a total of 15,050 names in the book. Each page has an equal number of names on it. How many names are on each page?
Answer:
175
Step-by-step explanation:
You have to divide 15,050 by 86
Have a nice day !
Which expression represents the commutative property?
a. 3 ÷ 9 = 9 ÷ 3
b. 6 + (5 + 4) = (6 + 5) + 4
c. 7 (2 + 8)
d. 15 + 1 = 1 + 15
Answer:
b) and c)
Step-by-step explanation:
a)
3/9 = 9/3
0,33 = 3 NO
b) 6+(5+4) = (6+5)+4
6+9 = 11+4
15 = 15 YES
c) 7(2+8) = ? NO
d) 15 + 1 = 1 + 15
16 = 16 YES
1. A jet travelled 640 miles in 2.5 hours. How far does it travel in 1 hour?
2. Renee as 20 days to read a book with 250 pages. How many pages should she read per day to finish the book on time?
plsssssss help i will mark u brainliest if possible
Answer:
1.) 256 miles
2.) 2 1/2 ( 2.5 ) pages a day
Step-by-step explanation:
1.) ( 256 * 2.4 = 640 )
2.) 250 / 20 = 2.5
I need it now so plz help me I am only in seventh grade
Answer:
D
Step-by-step explanation:
goodluck!!
In Ms. Henrick's class, there are 10 boys and 12 girls. What is the ratio of boys to girls? Express your answer as a fraction in simplest form.
Answer:
The ratios is 10:12 and if you were to write it in a fraction you get 10/12 which is simplified as 5/6
Step-by-step explanation:
Answer:
The ratio of the number of boys divided by the ratio of the number of girls
10:12. = 10/12divide by numerator and denominator by 25/6 or 5:6A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.03 with 90% confidence if (a) she uses a previous estimate of 0.34?(b) she does not use any prior estimates? n=_____(Round up to the nearest integer.)
Answer:
675 samples
752 samples
Step-by-step explanation:
Given that :
α = 90%
E = 0.03
Previous estimate (p) = 0.34
Estimated sample proportion (n)
n = p *q * (Zcritical /E)
Zcritical = α/2 = (1 - 0.9) /2 = 0.1 / 2 = 0.05
Z0.05 = 1.645 ( Z probability calculator)
q = 1 - p = 1 - 0.34 = 0.66
n = 0.34 * 0.66 * (1.645/0.03)^2
n = 674.70
n = 675
B.) without prior estimate given ;
p and q should have equal probability
Hence ;
p = 0.5 ; q = 0.5
n = 0.5 * 0.5 * (1.645/0.03)^2
n = 751.67361
n = 752
