A radioactive substance has a half-life of one month, which means that at the end of each month, the level of radioactivity is half the level that it was at the beginning of the month The substance was discovered in the soil
near a high school football field. The table shows the relationship between the radioactivity level found in the soil, r(t)and the number of months since discovery, 2.
2
10
5
25
125
4
Which statement correctly interprets the initial value?
Answers
The level of radioactivity in the soil is decreasing by a factor of 1/2 each month
Related Questions
help plzzzzzzzzzzzz
Answers
Answer:
m<ABD = 76°
m<DBE = 104°
Set the two expressions given equal to 180° then solve. Use verticle opposite angle proof to then find the other angles.
FREE BRAINLIEST! if you can answer this correctly ill give you brainliest and answer some of the questions you have posted :) thank you very much!!! (40pts)
Answers
Answer:
14 people
Step-by-step explanation:
20% of 70 is 14, and 20% of the people gave crew b a high rating.
(hope this help :P)
Find the x- and y-intercepts of the graph of -3x + y = 34. State your answers as
whole numbers or as improper fractions in simplest form.
Answers
Answer: x-intercept: -34/3 y-intercept: 34
Step-by-step explanation:
Tell me if I’m wrong
6y + 11
8y - 3
What is the value of y?
Р
Answers
you make it to where 6y+11=8y-3
then move the like terms to one side (y)
6y-8y=-3-11
then calculate the difference -2y=-14
divide both sides by -2
y=7
what is 8=3a-4? please answer if you know it because the homework is for tomorrow.
Answers
Answer: a = 4
Step-by-step explanation: Hope this helps ^^
Answer:
a=4
Step-by-step explanation:
8=3a-4
+4 +4
12=3a
12/3
a=4
Please help me, to be submitted tomorrow. Pls help
Answers
Answer:
I got the answer 13
Step-by-step explanation:
To be short, I use the tangent ratio
Answer:
i got 13 but i would try to work it out yourself just incase
Step-by-step explanation:
13) Find the missing side to the nearest tenth.
11 cm
50°
r
Answers
Answer:
17.1
Step-by-step explanation:
11/cos(50)=17.1
16. What is the solution when you take the square root of a negative number? A. Any positive value B. No Solution C. Any negative value D. All Solutions
Answers
Answer:
A: Any positive value
Step-by-step explanation:
Negative numbers don't have real square roots since a square is either positive or 0. The square roots of numbers that are not a perfect square are members of the irrational numbers. This means that they can't be written as the quotient of two integers.
Answer:
A: Any Postive value or B: No Solution
Step-by-step explanation:
Zero has one square root which is 0. Negative numbers don't have real square roots since a square is either positive or 0. The square roots of numbers that are not a perfect square are members of the irrational numbers. This means that they can't be written as the quotient of two integers.
There are 15 trees in a backyard. If 20% of the trees are oak, how many oak trees are there ?
Answers
Answer:
3
Step-by-step explanation:
Take 20 % of the 15 trees in the backyard
.20 * 15
3
There are 3 oak trees in the backyard
Answer:
3
Step-by-step explanation:
divide 15 by 20% or you could just search it on googs ♀️
what is 4x - y = - 20 in y=mx+b form
Answers
Answer: y = 4x + 20
Step-by-step explanation:
4x - y = -20
=> -y = -4x - 20
=> y = 4x + 20
Answer:
4x - y = - 20 in y=mx+b form is: y = 4x + 20
Step-by-step explanation:
Given the equation
[tex]4x - y = - 20[/tex]
What is the slope-intercept form of linear/line function?
The slope-intercept form of the line equation
[tex]y = mx+b[/tex]
where
[tex]m[/tex] represents the slope[tex]b[/tex] represents the y-interceptConverting the equation into the slope-intercept form of the line equation
[tex]4x - y = - 20[/tex]
Add -4x to both sides
[tex]4x-y+\left(-4x\right)=-20+\left(-4x\right)[/tex]
simplify
[tex]-y=-20-4x[/tex]
Divide both sides by -1
[tex]\frac{-y}{-1}=-\frac{20}{-1}-\frac{4x}{-1}[/tex]
Simplify
[tex]y=4x+20[/tex]
Therefore, 4x - y = - 20 in y=mx+b form is: y = 4x + 20
PLease solve it, it took me a while to save up and youll get 150 points if you get it right. dont spam/scam me please and solve it the best to your ability
Answers
Answer:
k=+8.75
Step-by-step explanation:
For each increase in time (one hour increase), the amount increased by $8.75.
example:
1 = 8.75
2 = 17.50
3 = 26.25
4 = 35.00
5 = 43.75
6 = 52.50
7 = 61.25
8 = 70.00
9 = 78.75
10 = 87.50
There are 36 students in Miss
Anne's class. If there are 16 boys and
g girls in Miss Anne's class, which one
of the following equations can help
you find the value of g?
A. 9 - 16 = 36
B. 16 x g = 36
C. g divide 36 = 16
D. 16 + g = 36
Answers
Its the only one that makes since
The measures of the two acute angles of a right triangle are in the ratio 2:7. What are the measures of the two angles?
Answers
Answer:
20, 70
Step-by-step explanation:
9x=90
x=10
angles are 20 and 70
please mark as brainliest
Well someone help me with this please
Answers
Answer:
Step-by-step explanation:
9/13 = h/10
Cross multiply
90=13h
Divide by 13
H = 6.92
A volleyball player’s serving percentage is 90%. Six random serves are selected. What is the probability that 5 of those serves were successful?
0.09
0.35
0.59
0.90
Answers
Answer:
C (.35) on edge2021! :)
Step-by-step explanation:
for this problem we use the formula P(X = k) = (n over k)p^k(1-p)^n-k and in this case,
k = 5
n = 6
p = .90
and (n over k), n choose k, is calculated by (n! / k!(n-k)!) or just look up "6 choose 5" and you'll figure out that it's equal to 6.
so you end up with P(X = 5) = 6(.90)^5(1-.90)^6-5 which will give you .35 when put in a calculator.
solve the following equation.
4(x+2)-17=35
Answers
Answer:
Step-by-step explanation:
x=11
4(11+2)-17=35
Ionic bonds form when atoms _____ electrons from one element to another.
Fill in the blank
Answers
Answer: Ionic bonds form when an electron of one atom is transferred to another atom. The two atoms become oppositely charged ions and attract each other.
Step-by-step explanation:
Write the equation of a line in point-slope form that passes through (2, 3)
and has a slope of 1/2
Answers
Answer:
y=1/2x+2
Step-by-step explanation:
hope this helped
3(8 - 4x) = 12
Please help. You have to use distributive property to solve.
Answers
Answer:
x=1
Step-by-step explanation:
First, we distribute the 3 to the 8 and the 4x.
Now we have 24-12x=12
Then, we subtract 24 from 12
Now we have -12x=-12
Finally, we devide -12 by -12
Now we have x=1
Hope that helps!
Which exponential function best fits the data below?
X
0
6,500
3,120
1,700
2
3
820
4
412
5
202
Ay = 3,120 (0.4)*
By = 412 (1.5)*
C y = 6477 (0.5)*
Dy = 1.700 (12)
Answers
Answer:
C
Step-by-step explanation:
[tex]y = a {b}^{x} \\ b = 3120 \div 6500 = 0.48 \\ [/tex]
[tex]y = 6500 \times {0.48}^{x} [/tex]
6²•8² = [?]
Enter the value that goes in the box
Answers
Answer:
36 * 64
= 2304
Hope it help
answer this question i’ll give brainliest
Answers
Answer:
21
Step-by-step explanation:
Answer:
21
Step-by-step explanation:
The Greatest Common Factor (GCF) of 36 and 20 is
Answers
Answer:
4
Step-by-step explanation:
Pls help me I am freaking out. :(
A submarine is at an elevation of -100 feet (100 feet below sea level). Let’s compare the elevations of these four people to that of the submarine:
Clare’s elevation is greater than the elevation of the submarine. Clare is farther from sea level than the submarine.
Andre’s elevation is less than the elevation of the submarine. Andre is farther away from sea level than the submarine.
Han’s elevation is greater than the elevation of the submarine. Han is closer to sea level than is the submarine.
Lin’s elevation is the same distance away from sea level as the submarine’s.
1. Complete the table as follows.
Write a possible elevation for each person.
Use <, >, or = to compare the elevation of that person to that of the submarine.
Use absolute value to tell how far away the person is from sea level (elevation 0).
As an example, the first row has been filled with a possible elevation for Clare.
Answers
Andre : Anything less than -100, for example -150
-150<-100
|-150|=150
Han: Anything between -100 & 100, for example 50
50> 100
|50|= 50
Lin: 100 or -100,
100> -100
|100|=100
or
-100=-100
|-100|=100
True or False: 2/7=10/35 *
Answers
Answer:
true
Step-by-step explanation:
Answer:
B False
Step-by-step explanation:
is equal to 0.28571428571
what is the answer to 2(3x-5) = 4x+2? Well not the answer but like the steps to solving it
Answers
Answer:
x=6
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
2(3x−5)=4x+2
(2)(3x)+(2)(−5)=4x+2(Distribute)
6x+−10=4x+2
6x−10=4x+2
Step 2: Subtract 4x from both sides.
6x−10−4x=4x+2−4x
2x−10=2
Step 3: Add 10 to both sides.
2x−10+10=2+10
2x=12
Step 4: Divide both sides by 2.
2x=12
x=6
Solve the simultaneous equation:
y=3x+5 y=4x^2+x
Answers
x=-0.9,y=2.3
Can someone help and plz make sure the answer is right plz and thank you will give brainliest :)
Answers
Answer:
-9
Step-by-step explanation:
Find the value of 1.69x4.41
Answers
1. What is the Greatest Common Factor of 8 and 36? (1 point)
-2
-4
-6
-8
Answers
Answer:
4 is the answer no hate if I'm wrong :)
Answer
GCF of 8 and 36 is 8
CORRECT ANSWER Is 4 SORRY FOR THE MESS UP