Earth is approximately 4.54 * 10^9 years old. Humans are thought to have evolved around 2.5 * 10^5 years ago.
For what percentage of the age of the Earth have humans been present? Give your answer to 3 s.f

Answers

Answer 1

Answer:

5.507*10^-7%

Step-by-step explanation:

(2.5 * 10^5)/(4.54 * 10^9)*1/100 %= 5.507*10^-7%


Related Questions

Pls help with is geometry will like and will give Brainlyist if it will let me pls help

Answers

Answer:

I believe the answer would be CD is less than DB which is less than BC

Step-by-step explanation:

I derived this answer by looking at the angle degrees. Typically, the larger the angle, the larger the side.

Answer

Cd is less than Db

The sum of three numbers is 62. The second number is equal to the first number diminished by 4. The third number is four times the first. What are the numbers? Which three expressions could be used to represent the numbers?
A n; n - 4; 4n
B n; 4 - n; n + 4
C n; n/4; n + 4

Answers

Answer:

38

Step-by-step explanation:

38 because

Which system of linear inequalities is represented by the
graph?

Answers

Answer:

C.

Step-by-step explanation:

Easiest and fastest way to determine your answer is to graph the systems of inequalities on a graphing calc. Once you do so, you should be able to see that Choice C is the correct answer.

The coordinate plane below represents a city. Points A through F are schools in the city. graph of coordinate plane. Point A is at negative 3, negative 4. Point B is at negative 4, 3. Point C is at 2, 2. Point D is at 1, negative 2. Point E is at 5, negative 4. Point F is at 3, 4. Part A: Using the graph above, create a system of inequalities that only contains points C and F in the overlapping shaded regions. Explain how the lines will be graphed and shaded on the coordinate grid above. (5 points) Part B: Explain how to verify that the points C and F are solutions to the system of inequalities created in Part A. (3 points) Part C: Natalie can only attend a school in her designated zone. Natalie's zone is defined by y < −2x + 2. Explain how you can identify the schools that Natalie is allowed to attend. (2 points)

Answers

Answer:

Part A;

There are many system of inequalities that can be created such that only contain points D and E in the overlapping shaded regions.

Any system of inequalities which is satisfied by (-4, 2) and (-1, 5) but is not satisfied by (1, 3), (3, 1), (3, -3) and (-3, -3) can serve.

An example of such system of equation is

x < 0

y > 0

The system of equation above represent all the points in the second quadrant of the coordinate system.

The area above the x-axis and to the left of the y-axis is shaded.Part B:

Part B

It can be verified that points D and E are solutions to the system of inequalities above by substituting the coordinates of points D and E into the system of equations and see whether they are true.

Substituting D(-4, 2) into the system we have:

-4 < 0

2 > 0

As can be seen the two inequalities above are true, hence point D is a solution to the set of inequalities.

Also, substituting E(-1, 5) into the system we have:

-1 < 0

5 > 0

As can be seen the two inequalities above are true, hence point E is a solution to the set of inequalities.

Part C

:This part is different from yours because my equation is y> 4x + 3 and it's been a long time since I did that task and I don't remember anything. I hope you can do yours from my example.

Given that chicken can only be raised in the area defined by y > 3x - 4.

To identify the farms in which chicken can be raised, we substitute the coordinates of the points A to F into the inequality defining chicken's area.

For point A(1, 3): 3 > 3(1) - 4 ⇒ 3 > 3 - 4 ⇒ 3 > -1 which is true

For point B(3, 1): 1 > 3(3) - 4 ⇒ 1 > 9 - 4 ⇒ 1 > 5 which is false

For point C(3, -3): -3 > 3(3) - 4 ⇒ -3 > 9 - 4 ⇒ -3 > 5 which is false

For point D(-4, 2): 2 > 3(-4) - 4; 2 > -12 - 4 ⇒ 2 > -16 which is true

For point E(-1, 5): 5 > 3(-1) - 4 ⇒ 5 > -3 - 4 ⇒ 5 > -7 which is true

For point F(-3, -3): -3 > 3(-3) - 4 ⇒ -3 > -9 - 4 ⇒ -3 > -13 which is true

Therefore, the farms in which chicken can be raised are the farms at point A, D, E and F.

.Take that exam and got 100% .The exam was 05.13 Segment One Exam Part 3.I really hope this helps you.And please give me the brainliest

Answer:

give person above brainliest

Step-by-step explanation:

its right

Kip is going to meet his family.
Predict the number of kilometers that will
remain after 7 hours.
The table shows the number of
kilometers he needs to travel until he
reaches them.
Enter the correct answer.
DONE
Hour
1
2
3
4
5
6
7
Kilometers
196
166
136
106
76
46
?

Answers

Answer: 16 kilometres

Step-by-step explanation: Every hour, the distance left is decreased by 30. So, 46-30= 16.

what is 3 × 8000283743729.

Answers

Dear user,

3 × 8000283743729 = 2.4000851

Answer:

24000851231187

hope this helps!

Pls mark as brainliest!

Tickets to a concert cost either $12 or $15. A total of 300 tickets were sold, and the total receipts were $4140. How many of each kind of ticket were sold?

Answers

Answer:

1,242,000

Step-by-step explanation:

Can someone help please simply answer only

Answers

Answer:

2nd option

Step-by-step explanation:

there is no need to make a like of best fit because the x axis is already acting as one.

PLEASE HELP!!
explain how to solve 2x+9= 15

Answers

Answer:

Step-by-step explanation:

2x + 9 = 15

you move + 9 to the other side of the equation, you will get:

2x = 15 - 9

2x = 6

So, x = 3

What is the equation, in slope-intercept form, of the line that is perpendicular to the line
=} (x-6) and passes through tho point (-2,-2)?
y-4=
y=-3x - 19
y=-x+ 10
y = fx-1
y = 2 x + 1

Answers

Answer: y=-x+ 10

Step-by-step explanation:

2.) What is the value of x? Type only the number as your answer.
42degrees (2x + 6)°

Answers

The value of x is 18

[tex]2x + 6 = 42 \\ 2x = 42 - 6 \\ 2x = 36 \\ x = \frac{36}{2} \\ x = 18[/tex]

HAVE A NICE DAY!

THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION.

What is the length of GH?
H
cm
Type in your response.
2
4 cm
60 cm
к
J
DONE
18 cm

Answers

Answer:

15 cm

Step-by-step explanation:

Area of a rectangle formula: A = lw

Simply plug in known variables and solve:

60 = 4(w)

w = 15

Answer:

15 cm

Step-by-step explanation:

If we know the area which is 60 and the width which is 4 we can just divide 60 by 4 and we get 15cm

what is the area of the triangle below?

Answers

The answer is B:68

All you have to do is base times height and divide by 2

A=bh/2

A=17(8)/2

A=136/2

A= 68
the answer is B. 68 sq units

I need help please!!!
Which of the following is the equation of a line in slope- intercept form fo a line with slope =2/3 and y-intercept at (0,-2)? A. y= -3/2x -2 B. y=-2/3x +2/3 C. y= -2x - 2/3 D. y= 2/3x -2

Answers

Answer:D

Step-by-step explanation:

Jackie goes to the mall every weekend with her friends. Last week, the group spent $28.00 on 2 salads and 4 fruit smoothies. This week, the group spent $38.00 on 3 salads and 5 fruit smoothies. Let x represent the cost of a salad and let y represent the cost of a smoothie. 2x + 4y = 28 3x + 5y = 38 If you multiply the first equation by –3, what could you multiply the second equation by to eliminate the x-variable when adding the equations? What is the cost of a salad? What is the cost of a smoothie?

Answers

Answer:

Salad(x)=6, smoothie(y)=4

Step-by-step explanation:

Salad=x

Smoothie=y

2x+4y=28 (1)

3x+5y=38 (2)

To eliminate the x- variable ,equ(1) is multiplied by -3 and equ(2) is multiplied by 2

-6x-12y=-84 (3)

6x+10y=76 (4)

Add equ (3) and (4)

-2y=-8

y=-8/-2

y=4

Substitute y=4 into equ(1)

2x+4y=28

2x+4(4)=28

2x+16=28

2x=28-16

2x=12

x=12/2

=6

x=6, y=4

Answer:

when adding equations: 2

salads: $6

smooties: $4

Step-by-step explanation:

just did it

hope this helps :)

Someone please help

Answers

Answer:

A

Step-by-step explanation:

The 3D shape of the 5 cubes put to a 2D-plane will be representing the diagram A.

Answer: A

Step-by-step explanation:

This is because Option A has 5 cubes, as well as the model above which also has 5 cubes. When you change the angle of the way you are looking at Option A it will be  similar to the plan above

What is the value of the expression shown below 10+(2x3)^2 divided by 4x (1/2)^3

Answers

Answer:

10 + (2 x 3)^2 / 4 x (1/2) ^3

First do the parentheses

2 x 3 = 6

1 / 2 = 0.5

We are left with

10 + 6^2 /4 x 0.5^3

Do exponents

6 x 6 = 36

0.5 x 0.5 x 0.5 = 0.125

10 + 36 / 4 x 0.125

Divide by 4 and multiply by 0.125

36 / 4 = 9

9 x 0.125 = 1.125

We are left with

10 + 1.125 = 11.125

The answer is 11.125

Step-by-step explanation:

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. Find the solution set. The solution set for -p2 − 11p = 0 is { }. (Separate the solutions with a comma.)

Answers

Answer:

34.55/6.28=0

Step-by-step explanation:

whats the answer???​

Answers

Answer:

60

Step-by-step explanation:

Central Angle = Intercepted Arc

The central angle is 60 so the intercepted arc is 60

Answer:

the answer is 60. It says at r and s 60 degrees. so that is the answer

Step-by-step explanation:

line AB and line CD are cut by transversal RS. of tye measure od angle FEA is 6x+5 and the measure of angel DEF is x+20 ,find the value of x then find the. measure of angel FEA and angle DEF​

Answers

Answer:

FEA, DEF = 23 degrees

Step-by-step explanation:

Angles FEA and DEF are alternate interior angles. Alternate interior angles are congruent.

Therefore, FEA is congruent to DEF, and:

x + 20 = 6x + 5

Now, we solve this equation to find the value of x:x + 20 = 6x + 5

x + 20 = 6x + 5

20 = 5x + 5

15 = 5x

3 = x

Now, we know that the value of x is 3. We can plug this value into the equations to find the values of the angles.

x + 20

3 + 20

DEF = 23 degrees

6x + 5

6(3) + 5

18 + 5

FEA = 23 degrees.

In fact, you only need to find the measure of one of the angles, because you know that they are congruent.

Hope this helps :) Please feel free to ask me any questions!

If y varies directly and y is 12 when x is 1.2 what is the constant of variation for this relation

Answers

Answer:

10

Step-by-step explanation:

The constant of variation would be 12 / 1.2 = 10.

Answer:

[tex]10[/tex]

Step-by-step explanation:

[tex]y \propto x[/tex]

[tex]y=kx[/tex]

[tex]12=k \times 1.2[/tex]

[tex]k=\frac{12}{1.2}[/tex]

[tex]k=10[/tex]

The constant of variation is [tex]k[/tex].

PLS ANYBODY HELP ME WITH MY GEOMETRY QUESTION

Answers

Answer:

Angle A = 39°

Angle B = 90°

Angle C = 51°

Step-by-step explanation:

Points O, A, B lie on a line. OA = 12 cm and OB = 9 cm. Find the distance between the midpoints of segments
OA
and
OB
in each case.
a
Point O lies on segment
AB
.

Answers

Answer:

10.5

Step-by-step explanation:

Let E be the midpoint of OA  and F be the midpoint of OB. 

If point O is placed between A and B, then points E and F are placed on different sides from O. The segment OE has length 12÷2=6 cm and segment OF has length 9÷2=4.5 cm. Than EF=6+4.5=10.5 cm.

If point O is placed outside the segment AB, then point B is closer to point O than point A, because OA>OB. Since OE=6 cm and OF=4.5 cm, EF=6-4.5=1.5 cm.

If the order of points is A, O, B, then the midpoints of AO and OB will be separated by half the length of AB: (12 cm + 9 cm)/2 = 10.5 cm.

please mark me brainliest :)

Answer:

10.5 cm

Step-by-step explanation:

Sara leaves home at 7 A.M. traveling at a rate of 45 mph. Her son discovers that she has forgotten her briefcase and starts out to overtake her. Her son leaves at 7:30A.M. traveling at a rate of 55 mph. At what time will he overtake his mother?

Answers

Answer:

B I think

Step-by-step explanation:

Answer:

Dude, there is no option?

Step-by-step explanation:

the radius of a circle is 2.9 in. Find the circumference to the nearest tenth (help please)

Answers

Answer:4.18

Step-by-step explanation:

2.9+2/9

Answer:18.2in

Step-by-step explanation:

circumfernce =2 pi r

pi=22/7

c=2 x 22/7 x 2.9

c=18.2 in

I NEED HELP PLEASE

Select all the correct answers.
Which equations have infinitely many solutions?

Answers

Answer:

B and D

Step-by-step explanation: i used my brain

Answer:

B and D

Step-by-step explanation:

line. Fill in the
(4) All linear equations have a graph that forms a
blank.
O
parabola
O
V-shaped
O
straight
O zig zag​

Answers

Answer:

Straight

Step-by-step explanation:

Linear equations in the form of y = mx + b are always straight. Parabolas are quadratic equations of y = a(x-h)² + k and have a curve. V shaped are formed by absolute values y = a|x-h| + k.

Which of the following equations describe the line shown below? Check all that apply! ​

Answers

Answer:

C and E

Step-by-step explanation:

Use the slope formula to first find the slope of the line.

The slope formula is y₂₋y₁ / x₂₋x₁ where (x₁ , y₁) is a point on the graph and (x₂ , y₂) is the other point on the graph. Substituting the values into the slope formula will give you 2 as the slope.

Now use the point-slope formula to find the correct answers.

Point-slope form is y₋y₁ = m(x₋x₁) where y₁ and x₁ are a point on the graph and m is the slope. Substitute both points into the formula (separately) to get C and E as your answers.

Which value is equivalent to cos 10°?
sin 30°
O sin 25°
O sin 70°
O sin 80°

Answers

Answer:

13

Step-by-step explanation:

answer is 13

explanation

Which statement is true about the effects of the transformations on the graph of function f to obtain the graph of function g. g(x) = f(x − 3) + 4

Answers

Answer:

The correct option is D

D) The graph of function f(x) is shifted right 3 units and up 4 units

Step-by-step explanation:

Lets the function be y = f(x)

To shift the graph 3 units to the right, we add -3 to the x term of the function:

Function becomes y' = f(x-3)

Then to shift the graph up by 4 units, we add -4 to the y term of the function:

Function becomes:

y - 4 = f(x-3)

y = f(x-3) +4

g(x) = f(x-3) +4

Hence the correct option is D, as the graph is shifted to the right by 3 units and also shifted up by 4 units

Answer: The correct answer is D. The graph of function f is shifted RIGHT 3 units and up 4

Step-by-step explanation:

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