To determine the age of fossils, scientists use radiometric dating. This involves measuring quantities of certain radioactive isotopes and using mathematical equations to compare the amounts of each isotope present.
Suppose a scientist dates a piece of petrified wood and calculates that it is approximately 23,881,392.3102 years old. The petrified wood is later displayed in a museum.
What is the most reasonable way for the museum tour guide to describe the age of the wood to museum visitors?
(A): 2.3881×107 years old
(B): 24 million years old
(C): 23.8813923102 mega years old
(D): 23 billion years old
Answer:
B 24 million years old
Step-by-step explanation:
i did this quiz a long time ago tho so it might be B or D
image below ill give branliest
Answer:
E= -4,5
F=3,-2
Step-by-step explanation:
i think that's correct sorry if not
please someone help 2 yards=_____feet
Answer:
3 feet in a yard, so the answer is 6
Step-by-step explanation:
2 yards x 3 feet in a yard = 6 feet
Answer:
6
Step-by-step explanation:
There are 3 feet in 1 yard, so in 2 yards there would be 6 feet.
Hope that helps!
Help me plssss someone I've been stuck on this question for a while now ;(
Answer:
4000 meters
Step-by-step explanation:
Shortest run was 5 laps (2000 meters), and longest was 15 (6,000 meters)
Given the function h of x equals 3 times the square root of x, which statement is true about h(x)?
The function is decreasing on the interval (–∞, 0).
The function is increasing on the interval (–∞, 0).
The function is decreasing on the interval (0, ∞).
The function is
The true statement about h(x) is: The function is increasing on the interval [0, ∞).
Linear FunctionA linear function can be represented by a line. The standard form for this equation is: ax+b , for example, y=2x+7. Where:
a= the slope.If:
a> 0 , the function is increasing;
a< 0 , the function is decreasing;
b=the constant term that represents the y-intercept.
Domain and RangeThe domain of a function is the set of input values for which the function is real and defined. In other words, when you define the domain, you are indicating for which values x the function is real and defined.
While the domain is related to the values of x, the range is related to the possible values of y that the function can have.
You should convert the text of the question into a math expression.
[tex]h(x)=3*\sqrt{x}[/tex]
Like the coefficient a is greater than zero (a>0), the function is increasing.
The equation has a square root, so, the values of x can not present negative values. Therefore, x≥0. Consequently, the values of y (range) for this function will be greater than or equal to zero (y≥0). See the attached image.
The range is:
[tex]{Solution:}\:&\:f\left(x\right)\ge \:0\:\\Notation:}&\:[0,\:\infty \:)\end{bmatrix}[/tex]
Learn more about the range and the domain here:
brainly.com/question/10197594
3 shapes are combined to form a composite figure. a semicircle is on the bottom, and then a small rectangle connects the semicircle to a triangle. how can you decompose the composite figure to determine its area? as three triangles and a circle as two triangles, a rectangle, and a circle as a triangle, a pentagon, and a semicircle as a triangle, a rectangle, and a semicircle
Answer:
(d) as a triangle, a rectangle, and a semicircle
Step-by-step explanation:
The description of the shape tells you how to decompose it. The shape is described as a semicircle, a rectangle, and a triangle. The appropriate decomposition is ...
as a triangle, a rectangle, and a semicircle
Answer:
d
Step-by-step explanation:
What does the 6 in 2/6 mean?
Hey there!
Here we have a fraction
2/6.
The 2 is the numerator, and 6 is the denominator.
How to remember where the numerator and the denominator is?
Well, please remember the following:
The Denominator is Down
Hence, 6 is the denominator of this fraction.
Hope everything is clear.
Let me know if you have any questions!
#LearningDoesn'tEnd
:-)
HELP What is the surface area of the square pyramid?
Step-by-step explanation:
AnswerA = a²+2aUnderoute of a²by 4+ha) a = base edge
b) h = height
pls vote me as a branliesthow many solutions does 8B + 7v - 5 equals -11 + 15b
Answer: No solutions
- by graphing-
First I will simplify:
8B + 7v - 5 equals -11 + 15b
8b + 7v - 5 = -11 + 15b
7v = -6 + 15b
7v = -6 + 7b
Let's graph this and see what happens!
-> I will graph y = 7x and y = 7x - 6
-> See attached.
-> Since there are no points of intersection (they have the same slope), there is no solutions.
ASAPPPPP!!!!!!!!!!!!!!
Answer:
297 [tex]cm^{2}[/tex]
Step-by-step explanation:
area of triangle x 4 + area of rectangle
[tex]\frac{1}{2}[/tex] x 12 x 9 x 4+ 9 x 9
y = 4
2x + y = 14
solve using substitution
A dartboard is divided into 20 sectors. Each sector is worth a point value from 1 to 20 and has shaded regions that double or
triple this value. A sector is shown below. Find the areas of the entire sector, the double region, and the triple region. Round
your answers to the nearest hundredth.
in
triple
double
The area of the entire sector is about
square inches.
The area of the double region is about
square inches.
square inches.
The area of the triple region is about
The area of each sector is the amount of space on the sector
The area of the entire region is 6.89The area of the double region is 0.75The area of the triple region is 0.46The area of the entire sectorThe area of a sector is calculated as:
A = (1/2) × r^2θ
For the entire sector, we have:
θ = π/10
r = 6.625
So, we have:
A = (1/2) × 6.625^2 × π/10
Evaluate the product
A = 6.89
The area of the double regionFor the double region, we have:
θ = π/10
r = 6.25
So, we have:
A = Complete sector - (1/2) × r^2θ
A = 6.89 - (1/2) × 6.25^2 × π/10
Evaluate the difference
A = 0.75
The area of the triple regionFor the triple region, we have:
θ = π/10
R = 4.125
r = 3.75
So, we have:
A = (1/2) × R^2θ - (1/2) × r^2θ
A = (1/2) × 4.125^2 × π/10 - (1/2) × 3.75^2 × π/10
Evaluate the difference
A = 0.46
Hence, the area of the triple region is 0.46
Read more about sector areas at:
https://brainly.com/question/16736105
A collector has 210 magazines and 300 books. She wants to maintain
this ratio in her collection but she needs to sell some of her items. If
she sells 21 magazines, how many total items should she sell from
her collection?
Answer:
51 total items
Step-by-step explanation:
210 Magazine : 300 Books
21 Magazine : 30 Books
If She wants to sell 21 magazines, she would have to sell another 30 books in order to maintain the ratio.
21 + 30 = 51
Do I subtract the fractions or divide or do something else with them please help
Answer:
7/6
Step-by-step explanation:
in order to find the answer you have to -5/6 by 1/3 and then you get 7/6 so technically you have to minus it
Explain why the fractions in question number 2 are equivalent?
Answer:
its 2/6ths its only multiplied by 2
Step-by-step explanation:
Which equation represents the line that passes through the point (-2,5) and has a slope of - 3
Answer: Answer:
A. is your answer
When using the Slope Method, your answer is y - 5 = 4(x - 2).
Feel free to give brainliest.
Have a great day everyone!
Divide 2.875 x 106 by 2.3 x 103.
Answer:
1.25 x 10^3
Step-by-step explanation:
i took the test
What is one sixth of 2.00
Which value is equivalent to the expression 3^2 × 3^3?
Answer:
243
Step-by-step explanation:
3^2 x 3^3 is the same as 3x3 x 3x3x3 which is 9x27 which is 243
Work out the value of x
2x
7x
this is a Co-intirior angle
Step-by-step explanation:
The sum of co-interior angle = 180°
Now,
2x + 7x = 180°
9x = 180°
x = 180° ÷ 9
x = 20°
Answer:
x = 20
Step-by-step explanation:
Co-interior angles (also called same-side interior angles) are two angles that are on the same side of the transversal and on the interior of (between) the two parallel lines.
Same-side interior angles theorem: If two parallel lines are cut by a transversal, then the same side interior angles are supplementary (add up to 180º).
Therefore, if 2x and 7x are co-interior:
⇒ 2x + 7x = 180
⇒ 9x = 180
⇒ x = 20
Compare to 0:
-x^2 + 10x - 25
Answer:
x = 5
Step-by-step explanation:
-x² + 10x - 25 = 0
x = {-10±√((10²)-(4*-1*-25) / (2*-1)
x = {-10±√(100-100)} / -2
x = {-10)/-2
x = 5
Comprobación:
- (5²) + 10*5 - 25 = 0
-25 + 50 - 25 = 0
He asked the class to write a number that is greater than R, and less than S.
Which choice is correct?
0.30
0.45
0.70
0.75
number greater than R and less than S is 0,45
Answer:
0.45
Step-by-step explanation:
R = .34
S = .66
.30 is less than R and less than S
.70 is greater than R and greater than S
.75 is greater than R and greater than S
.45 is the only one that is greater than R and less than S
Hope this helped <3 brainliest please :)
7.7 cm
A company is designing a new cylindrical water
bottle. The volume of the bottle will be 115 cm3.
The height of the water bottle is 7.7 cm. What is
the radius of the water bottle? Use 3.14 for r.
Step-by-step explanation:
I guess the 3.14 is to be used for pi (and not r, which is what we need to find out).
the volume of a cylinder is ground area × height.
the ground area is the area of a circle, which is pi×r².
so, we have
pi×r²×height = 115 cm³
3.14×r²×7.7 = 115 cm³
3.14×r² = 14.93506494...
r² = 4.756390107...
r = 2.18091497... cm
What decimal is equivalent to 85/99?
0.76
0.767676...
0.85
0.858585...
Answer:
The repeating decimal is 85/99 = 0.858585...
Step-by-step explanation:
A rational number in the form of a fraction can be represented as a decimal by dividing the numerator by the denominator. For example, this is how we get 0.75 = 3/4: (first screenshot)
Now let's divide 85.0000... by 99. Find enough decimal digits in the numerator so we can see whether the decimal terminates or starts to repeat. (second screenshot) Since the number 850 repeats itself, this is a repeating decimal.
Solve and show the answer in simplest terms 1 over 8 + 1 over 2 + 1 over 4
Answer:
7 over 8
Step-by-step explanation:
Change all the numerators over the least common denominator. 1+4+2 over 8.
I'd like someone to help me, please!
Julie has 9 rings in her jewelry box. Five are gold and four are silver. If she randomly
selects 3 rings to wear, find each probability:
a) P(exactly 2 silver)
b) P(at least 2 gold)
c) P(all 3 gold or all 3 silver)
d) P(at least 1 silver)
which expression shows 48+36 written as a protuct of two factors
Answer:
12(4+3)
Step-by-step explanation:
Factor out all of the problems.
Starting with 4(12+4)
This means (4*12)+(4*4)
48+16 is the answer to this
this isn't 48 + 36
12(4+3) is next
12*4 = 48
12*3 = 36
48+36 = 48 + 36
Therefore 12(4+3) is your answer
hope that helps!
hope this is what your looking for
Expand 3(2x-7) - 2(3x+5)
Answer:
-31
Step-by-step explanation:
Expand 3(2x-7) - 2(3x+5)
Distribute:
3(2x-7)
6x - 21
-2(3x+5)
-6x - 10
Add:
6x - 21
- 6x - 10
- 31
Hope this helps!
Answer:
[tex]\boxed{\sf{-31}}[/tex]
Step-by-step explanation:
If you want to solve this, you must expand by a distributive property.
Distributive property:
A(B+C)=AB+AC3(2x-7)-2(3x+5)
3(2x-7)
3*2=6
3*7=21
Rewrite the problem.
6x-21
6x-21-2(3x+5)
-2(3x+5)
-2*3=-6
-2*5=10
-6x-10
Rewrite the problem down.
6x-21-6x-10
Combine like terms.
6x-6x-21-10
Add similar into their elements.
6x-6x=0
-21-10
Solve.
Subtract the numbers from left to right.
-21-10=-31
-31
Therefore, the correct answer is -31.I hope this helps you! Let me know if my answer is wrong or not.
i need help with 7 and 8 explanations and show work for solving?
Answer:
ang ganda noh
Step-by-step explanation:
sorry di ko po alam yung sagot
What is the estimated sum of 709 645 798 704 and 658?
Answer:
about 3600
Step-by-step explanation: