Answer:
5.313mg
Step-by-step explanation:
The half-life of cesium-137 is 30 years. Suppose we have a 170-mg sample. What is the rate of decay after 150 years? (Round your answer to three decimal places.)
Half life formula
= N(t) = No(1/2)^t/t½
N(t) = Amount after t years
No = Initial amount
t = time
t½ = half life
N(t) = 170 (1/2) ^150/30
N(t) = 170 × (1/2)^5
N(t) = 5.3125mg
Approximately the quantity left after t years = 5.313mg
Please Help Me I will mark brainliest
Answer:
This is what I think it is but im no good at this so sorry if it is wrong. XP
Step-by-step explanation:
y=4/7x
y*7= 4/7*7x
y*7=4x
7y/4x = 4x/4x
7y/4x=0
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Please help! I need to hand this in 20 minutes!
x=36
hope this helped ;)
Can anyone answer this Algebra 2 problem? Thank you in advance!
Answer:
a i think
Step-by-step explanation:
Hich statements about the function f are true? Check all that apply. The domain of f(x) is {all real numbers}. The range of f(x) is {all real numbers}. The domain of f(x) is {x| x > 0}. The range of f(x) is {y| y > 0}. f(2) = 4 f(2) = 2(x + 3)
Answer:
A. The domain of f(x) is {all real numbers}.
B. The range of f(x) is {all real numbers}
E. f(2) = 4
Explanation
Find the graph attached.
The domain of a function is the value of the input variable x for which the function f(x) exists. Given the function
f(x) = 1/2 x + 3
The function will exist on all values of x (either positive or negative).
The domain can be said to exist on all real values. If you look at the graph, we will see that the line tends to both negative infinity and positive infinity. Hence the domain can be represented according to the set notation:
DOMAIN: (-∞, ∞)
The range is the set of output value y for all input variable x. The output value y will also exist on all real values because, no matter the value of x imputed in the function, we will always get a finite value as the output. Hence the range of the function is denoted by the set notation:
RANGE: (-∞, ∞)
Next is to get f(2).
To get f(2), we will set the input value as 2 and calculate for the output value as shown:
f(2) = 1/2(2) + 3
f(2) = 1+3
f(2) = 4
Hence the following are true of the function:
The domain of f(x) is {all real numbers}.
- The range of f(x) is {all real numbers}
- f(2) = 4
please help this due at 3:00
The Miami Heat scored 79 points. This was 13 points less than the Chicago Bulls. How many points did the Chicago Bulls score?
Write an equation and solve.
Answer:
92
Step-by-step explanation:
Miami scored 79 points which was 13 LESS than Chicago.
So, Miami = Chicago - 13, (change Miami to their score)
79 = Chicago - 13 (add 13 to both sides to isolate Chicago and find answer)
92 = Chicago
Equation: 79 = Chicago - 13
Estimate the value of the
13
by plotting it on the number line.
Show Your Work
Answer:
098765
Step-by-step explanation:
h(x) = 17 + x/6 h(-18) =
Answer:
can we explain it
Step-by-step explanation:
Find the value of x
A.21
B.27
C.31
D.34
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[tex]3x + 1 = 64[/tex]
Subtract sides 1
[tex]3x + 1 - 1 = 64 - 1[/tex]
[tex]3x = 63[/tex]
Divide sides by
[tex] \frac{3}{3} x = \frac{63}{3} \\ [/tex]
[tex]x = 21[/tex]
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Thus the correct answer is (( A )) .
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
what's the parallel line to y=2x-3 that passes through (2,8)
Answer:
Step-by-step explanation:
did you try asking your teacher for help
Answer:
Step-by-step explanation:
Find the slope of the original line and use the point-slope formula
y − y1 = m(x−x1) to find the line parallel to y=2x − 3.y = 2x+4
Hope this help
Last season the Blue Jay's won 8 out of 12 games. Next season they will only play 9 games. How many will they
likely win, based on last year's season?
Answer:
Step-by-step explanation:
4
Answer:
They will most likely win 6 games.
Step-by-step explanation:
8/12= 2/3
2/3=6/9
Hope this helps!
what is the answer to 2n-8= -26
Four plus a number y is greater than 10
Answer:
y+4 _<_ 10
Step-by-step explanation:
Answer:
4+y>10
Step-by-step explanation:
Pls give Brainliest!
in triangle DEF, the measure of angle Eis 30 and the measure of angle F is 45. What is the measure of angle D?
Answer:
angke D = 105°
Step-by-step explanation:
All triangles add up to 180°. 30+45=75 180-75=105
In triangle DEF, the measure of angle D is 105°.
What is a triangle?A triangle is a geometric figure with three edges, three angles and three vertices. It is a basic figure in geometry.
The sum of the angles of a triangle is always 180°
Given that,
In triangle DEF,
Value of ∠ E = 30°, ∠ F = 45°.
Let the value of ∠ D is x°.
Since, the sum of the angles of a triangle is 180°.
Apply this property in triangle DEF,
30 + 45 + x = 180
75 + x = 180
x = 180 - 75
x = 105
The value of ∠ D is 105°.
To know more about Triangle on:
https://brainly.com/question/2773823
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A population of bears is decreasing the population this year is 200 bears after 1 year it is estimated that the population will be 160 bears after 2 years it is estimated that the population will be 128 bears what equation describes the bear population in any year x?
Answer:
The equation is;
y = 200•0.8^x
where y is the number of bears remaining and x is the year number in particular
Step-by-step explanation:
Let us have the rate of decrease as r and we set up an exponential equation
y = I• ( 1 - r)^x
where r is the percentage decrease, I is the initial population = 200 and x is the number of years
For the population after 1 year, we have;
160 = 200( 1 -r)^x
divide both sides by 200
0.8 = (1-r)^1
0.8 = 1 - r
r = 1 - 0.8
r = 0.2
So the equation will be;
y = 200( 1 - 0.2)^x
y = 200•0.8^x
WHAT IS THE ANSWER PLZ HELP
WILL GIVE BRAINLIEST FOR CORRECT ANSWER!
A certain brand of laundry detergent comes in two sizes. The smaller size is 24 oz and cost $3.99. The larger size is 64 oz and cost $6.99. Which has the lower unit cost?
Given:
The smaller size is 24 oz and cost $3.99.
The larger size is 64 oz and cost $6.99.
To find:
Which has the lower unit cost?
Solution:
The formula for unit cost is
[tex]\text{Unit cost}=\dfrac{\text{Total cost}}{\text{Quantity}}[/tex]
The unit cost of smaller size is
[tex]\text{Unit cost of smaller size}=\dfrac{3.99}{24}[/tex]
[tex]\text{Unit cost of smaller size}=0.16625[/tex]
The unit cost of larger size is
[tex]\text{Unit cost of larger size}=\dfrac{6.99}{64}[/tex]
[tex]\text{Unit cost of larger size}=0.10922[/tex]
It is clear that, 0.10922 is less than 0.16625.
Therefore, the unit cost of larger size is lower.
The temperature of liquid in an experiment starts at 0*C. The experiment calls for the temperature of the liquid to change at a rate of -0.60*C per minute. How long will it take for the liquid to reach -10.5*C
Answer:
The liquid will take 17.5 minutes to reach -10.5 ºC.
Step-by-step explanation:
From this statement we understand that the temperature of liquid is increased at constant rate in time, whose model is described by:
[tex]T (t) = \dot r \cdot t + T_{o}[/tex] (Eq. 1)
Where:
[tex]T[/tex] - Temperature of the liquid, measured in degrees Celsius.
[tex]\dot r[/tex] - Heating rate, measured in degrees Celsius per minute.
[tex]t[/tex] - Time, measured in minutes.
[tex]T_{o}[/tex] - Initial temperature, measured in degrees Celsius.
If we know that [tex]\dot r = -0.60\,\frac{^{\circ}C}{min}[/tex] and [tex]T_{o} = 0\,^{\circ}C[/tex], the temperature model for the liquid is:
[tex]T(t) = -0.60\cdot t[/tex] (Eq. 2)
In addition, if [tex]T(t) = -10.5\,^{\circ}C[/tex], then time taken for the liquid to reach that temperature is:
[tex]t = \frac{-10.5}{-0.60}[/tex]
[tex]t = 17.5\,min[/tex]
The liquid will take 17.5 minutes to reach -10.5 ºC.
A rock climber that is 0.74 miles above sea level ascends 0.18 mile and then descends 0.8 mile. Which represents the location of the rock climber compared to sea level?
Answer:
did joe go do so do go go r school find dumb soon
what is the slope?
Answer:
The slope is -1.333.
Step-by-step explanation:
A bottle of water is 2/3
full. You drink 1/4 of the water
You drink (blank)
of the bottle.
Answer:
0.4166666666666666666666666666666666666666666666666666666666666666
Step-by-step explanation:
2/3 - 1/4 = 5/12
Simplify the following:
2/3 - 1/4
Hint: | Put the fractions in 2/3 - 1/4 over a common denominator.
Put 2/3 - 1/4 over the common denominator 12. 2/3 - 1/4 = (4×2)/12 - 3/12:
(4×2)/12 - 3/12
Hint: | Multiply 4 and 2 together.
4×2 = 8:
8/12 - 3/12
Hint: | Subtract the fractions over a common denominator to a single fraction.
8/12 - 3/12 = (8 - 3)/12:
(8 - 3)/12
Hint: | Subtract 3 from 8.
8 - 3 = 5:
Answer: 5/12
Convert 5/12 to decimal = 0.4166666666666666666666666666666666666666666666666666666666666666
Answer: 5/12
Step-by-step explanation:
2/3 - 1/4 (multiply {2 x 4} {3 x 4} & {1 x 3})8/12 - 3/12 (solve as normal)8 - 3 = 5 DON’T CHANGE THE 12!5/12In the figure below, lines m and n are parallel.
what is the measure of
A. 20
B. 35
C. 40
D. 15
HELP i’ll mark brainlist !!!
In a certain triangle, the longest side is 1 foot longer than the second longest
side, and the second longest side is 1 foot longer than the shortest side. If the
perimeter is 21 feet, how many feet long is the shortest side?*
Answer:
This means that the isotope of silicon with a mass number of 28 is by far the most common of these three isotopes.
Explanation:
The abundance of Si-28 is 92.23%. Si-29 is 4.68% and Si-30 is 3.09%.
60 students
Solve for v in this equation:
3 teachers
15 teachers
Answer:
V would be equivalent to 300 students
Step-by-step explanation:
Noting that 3 teachers already have 60 students
If we're given 15 teachers, try dividing it by the 3 teachers that we originally have.
15/3 would be 5
We would now proceed to multiply the 60 students by 5 for the total amount of students with 15 teachers.
60*5 would be 300
Your answer should be 300 students.
How much does Jill have in liquid assets if her car is worth $4,500 and she has $1,110 in a savings account and $532 in her checking account?
The correct answer is 2858.
what is the rate of 60 pounds for 6$
Answer:
10 lbs per dollar
Step-by-step explanation:
if you divide each one by 6 then you get 10 pounds for $1
Can someone help me please if you don’t know the answer or think you might know please don’t answer.
Answer:
c
Step-by-step explanation:
what is the product? -0.91 × 0.4 enter your answer as a decimal
Answer: -0.364
Step-by-step explanation:
Answer:
-0.364
Step-by-step explanation:
(-)x(+)= (-)
multiply and add sign
Solve the quadratic equation by factoring
x^2-10x=11
Answer:
(x+11)(x-1)
Step-by-step explanation:
Answer:
x = 11, and x = -1
Step-by-step explanation:
X^2 - 10x -11 =0
(x - 11) (x +1 ) = 0
x = 11, -1
I really need help this has to be done by 9 o clock pm
Two added to three times a number m is the same as 18.
Answer:
if the question is asking for m, its 16/3
Step-by-step explanation:
3m+2=18
3m=16
m=16/3