Answer:
easy 21
This is right
Measurements of atoms, such as amounts, distances, and weights, are often very large or very small when compared to measurements of things you can see or touch. Scientific notation represents numbers as a power of 10. This makes very large or small numbers easier to use and understand. Approximately 7,500,000,000,000 carbon atoms fit across the period that you make with your pencil. Express this number in scientific notation. (PLEASE ANSWER FAST I'LL GIVE BRAINLIEST ALSO PLEASE DO ALL THIS IS WORTH 30 POINTS)
Step 1 Rewrite the number with a decimal after the first nonzero digit.7.500000000000
Step 2 Find the number of places and the direction you moved the decimal. If a number does not show a decimal, the decimal is at the right end of the number.You moved the decimal 12 places to the left.
Step 3 Drop the zeros, and write the number of places you moved the decimal as a power of 10. If you moved the decimal to the right, the power is negative. If you moved the decimal to the left, the power is positive.7.5 × 10 12
Step 4 Reverse the process to change scientific notation back to a whole number. A positive power of 10 moves the decimal to the right. A negative power of 10 moves the decimal to the left.
(Answer 1, 2, 3, 4 and 5 )
1. A sample of gold contains 3,800,000,000,000,000,000 atoms. Express this number in scientific notation.
2. A sample of silver contains 400,000,000,000,000 atoms. Express this number in scientific notation.
3. A sample of carbon has a mass of 0.000000000000000000034 kg. Express this mass in scientific notation.
4. A sample of silicon contains 5.23 × 10^11 atoms. Write this amount as a whole number.
5. The mass of a proton is about 1.67 × 10 -27kg. Write this mass as a whole number
Answer:
Step-by-step explanation:
1)3.8 *10¹⁵
2)4.0*10¹⁴
3)30.4*10⁻²⁰
4)523,000,000,000 atoms
5)0.000 000 000 000 000 000 000 000 00167
Students were surveyed about the time they wake up on school mornings. The results are shown in the table.
Survey Results
Time Range Number of Students
Before 6:00 3
6:00-6:30 13
After 6:30 4
Out of 500 students in the school, what is the BEST prediction for the number of students who wake up after 6:30?
Children get a 15% discount on tickets to an amusement park. Jun had a coupon for 5% off any two tickets. He used the coupon for himself and his 4-year-old son, Jack. If regular admission for a ticket was $60, what did Jun pay for the two tickets?
The amount that Jun paid for the two tickets given the discount rate and the coupon rates is $105.45.
How much was paid for the two tickets?Discounts and coupons reduce the price of an item.
Cost of the child's ticket after the discount = (100 - 15%) x 60 = $51
Cost of both tickets after the coupon = (100 - 5) x (51 + 60) = $105.45
To learn more about how to calculate discounts, please check: https://brainly.com/question/26061308
#SPJ2
CAN SOMEONE PLZ HELP ME 15 points <3
Answer:
the answer should be C
sisters homework i dont want to do it lol 2 questions
First slide question 1
second slide question 2
Answer:
its a bit hard sorry i cant answer
Step-by-step explanation:
the question says “is the relation above a function?”
Answer:
No, because two of the points are on 4 on the x-axis.
Step-by-step explanation:
The table and scatter plot show the total weight for
quart containers of strawberries at Marty's Market.
PLS ANSWER FAST
HELP WILLL GIVE BRAINBLEST
Step-by-step explanation:
this soo easy bru multiply every side
Answer:
Step-by-step explanation:
4th question
for pyramid
surface area of pyramid=base length*base width*pyramid height
surface area=4*4*5
surface area= 62.23 inch
2nd question
surface area of prism
length*width*height
6*3*5
128 m^2
Help PLZ Answer Questions Below
Answer:
First question: 2/3
Second question: -2
Step-by-step explanation:
2x - 3y = 6
Subtract 2x from both sides
-3y = -2x + 6
Multiply by -1
3y = 2x - 6
divide by 3
y = 2/3x -2
The equation basically asks for slope, so 2/3
x + 1/2y = 5
Subtract x
1/2y = -x + 5
multiply by 2
y = -2x + 10
it is -2
Please show your work
Answer:
D
Step-by-step explanation:
The decimal must move 14 decimal places to the right in order to equal 123,000,000,000,000.
40 points!! please do not plagiarize, I need this to be original :D
Erik is performing a marble experiment in math class. His teacher places an equal number of black, red, and white marbles in a bag. Then, Erik randomly takes out a marble, records the result, and puts the marble back in the bag. Each of the first four times Erik takes out a marble, he gets a black marble.
A. What is the theoretical probability of Erik picking a black marble next time? Based on Erik's results, what is the experimental probability of Erik picking a black marble next time?
B. Explain the difference between the two probabilities you found in part A.
C. What is the theoretical probability and likelihood of getting four black marbles in a row?
Answer:
Every one of us would have encountered multiple situations in life where we had to take a chance or risk. Depending on the situation, it can be predicted up to a certain extent if a particular event is going to take place or not. This chance of occurrence of a particular event is what we study in probability. In our everyday life, we are more accustomed to the word ‘chance’ as compared to the word ‘probability’. Since Mathematics is all about quantifying things, the theory of probability basically quantifies these chances of occurrence or non-occurrence of certain events. In this article, we are going to discuss what is probability and its two different types of approaches with examples.
please do it correctly , will give brainilest to right answer and not links pls
I need help plz real onez plz
A food shop makes wraps where you can only choose one kind of wrap, one meat, and one veggie. (NO TROLL ANSWER)
07.01)
Which of the following sets shows all the numbers from the set {3, 4, 5, 6} that are part of the solution to the equation 5x + 4 < 29? (4 points)
a. {4, 5, 6}
b. {3, 4, 5}
c. {3, 4}
d. {3}
A girl's feet are negative 2 over 4 yards from the surface of a pool. A boy's feet are negative 3 over 4 yards from the surface of the pool. Determine whose feet are closer to the surface.
The girl's feet are closer to the surface of the pool because negative 2 over 4 > negative 3 over 4.
The boy's feet are closer to the surface of the pool because negative 2 over 4 > negative 3 over 4.
The girl's feet are closer to the surface of the pool because negative 2 over 4 < negative 3 over 4.
The boy's feet are closer to the surface of the pool because negative 2 over 4 < negative 3 over 4.
Answer:
They’re the same close
Step-by-step explanation:
because when they go it equals they’re the same :p
Answer:
1st Choice
Step-by-step explanation:
Trust me it is the 1st one. :) If it is correct please mark me the brainiest. :D NP
7th grade math does anyone got any idea of what this could be
Answer:
-1 + 4x
Step-by-step explanation:
They had completely forgot about the 2x's
they pretty much just got rid of them
The correct answer would be -1 + 4x
heyyy, please answer :]
Answer:
it is no solution
Step-by-step explanation:
The dimensions of a square right pyramid are shown below.
The pyramid is sliced by a plane that passes vertically through the top
vertex and is perpendicular to the base. What is the resulting two-
dimensional shape and the area of the plane section?
Answer:A and C
Step-by-step explanation:Hope it helps:)
The two-dimensional shape and the area of the plane section should be like 40 square units and 16 square units.
What is the pyramid?A pyramid refers to the structure where the outer surface should be considered as the triangular and the converge to the individual step at the top that represent the shape and it roughly pyramid for the geometric sense.
Therefore, the option 1 and option 2 should be considered.
Learn more about pyramid here: https://brainly.com/question/17190798
I'm solving systems and I don't understand how to do it pls helpp
Answer:
Use the process of elimination. I'll only do one example since you have 4.
Step-by-step explanation:
Let's do the first question.
2x-3y=-11
2x+y=9
Our goal here is to be left with one variable to solve, this way we can use the answer for that variable to find the other. A.K.A only find X to plug into the equation to find Y. To do this, we'll use the process of elimination, in which we need to cancel out a variable.
X seems the easiest here. To cancel 2 (in the top equation), you need to have a -2. And that -2 needs to be the x coefficient in the 2nd equation, in order for us to "cancel" it out. To get -2, you multiply 2 by -1.
-1(2x+y)= -1(9)
Note that whatever you do to one side, you need to do it to both sides! Hence, why I also multiplied 9 by -1. You should now be left with:
-2x -y = -9
Now, we cancel out the positive 2 and -2 from both equations by adding the two equations.
2x-3y= 11
+
-2x-y=-9
X cancels out, so we're left with -4y=-20. Solve for Y, which is 5.
-4y=-20
y=5
Now that you have the Y value, plug it into any of the two equations to find your X value.
2x-3y=11
2x-3(5)=11
2x-15=11
2x=26
x=13
And voilah! Our Y value is 5, and our X value is 13.
It's pretty simple once you understand what's going on. All that we did was to cancel out one variable (either X or Y) in the two equations so that we're left with only one variable to solve. If we cancel out X, we only need to solve for Y. You do this by manipulating one of the two equations (doesn't matter which one). Once you find either X or Y, all you need to is to plug it into one of the original equations. Then, you'll have both X and Y.
And that my friend, is the process of elimination. Good luck!
Jason enjoys walking around the block with his dog, Ringo. When Jason and Ringo walk w times around the block, they walk 0.75w miles. Last week, Jason and Ringo walked 12 times around the block.
How many miles did Jason and Ringo walk around the block last week?
Write your answer as a whole number or decimal.
Pls help need help ASAP 50 points you will be reported if the answer is wrong
Answer:
I think it is 10
Step-by-step explanation:
Answer: i forgot what volume is can you please tell me what it means i forgot but once i understand i will help you <3
Step-by-step explanation:
The number y of Northern Rocky Mountain wolf breeding pairs x years since 1995 can
be modeled by y = 0.34x^2+ 3.0x + 9 When were there about 30 breeding pairs?
***no links or i’ll report***
Answer:
Step-by-step explanation:
pls help due in like 10 mins- no mfkn links pls pls pls
no need to explain
Answer: 60
Step-by-step explanation:
Please help and explain how I can do this on my own...
PLS PSLS PLSS ASWER MEEEEE ASNNWER THIS QUESTION THEN READ THE STORY2. If the lions ever outnumber the wildebeest on either side of the river (including the animals in the boat if it's on that side), they'll eat the wildebeest.
THE STORY There are three lions and three wildebeests stuck on the river bank which is on fire. It is your job to save the animals. How do three lions and three wildebeests cross over to the safe river bank on the other side of a crocodile-infested river to escape the flames? There’s a raft! But there are a few rules that must be followed in order to solve the puzzle:
Draw a right triangle with side lengths of 3, 4, and 5 units.
and answer the problem please :')
Answer:
Image below
Step-by-step explanation:
Given: Side lengths of a right triangle 3,4 and 5 units.
To draw: A right triangle with the given side length.
Solution:
We know, in a right angle triangle hypotenuse is the longest side and satisfying Pythagoras theorem.
From the given side length,
Hypotenuse = 5 unit
We can take any of the base and perpendicular.
Let, Base = 3 unit
Perpendicular = 4 unit.
It a right-angle triangle with a hypotenuse 5 unit.
Now we draw a right angle triangle taking in the first 3 base and 4 perpendicular and second 3 perpendicular and 4 bases.
3. Write the following as an algebraic expression: Twice the cube of z .4. Write the following as an algebraic expression: The quotient of the sum of x plus 4 and 2
Answer:
1. 2z^3 2. x+6
Step-by-step explanation:
Kendall makes candles and sells them online. To make an Essential Elegance candle, she adds 3 drops of lavender and 6 drops of vanilla to a bowl of unscented wax. To make a Garden Glory candle, she adds 4 drops of lavender and 10 drops of vanilla to the bowl instead. Which candle has a greater ratio of lavender to vanilla?
EEEEEEEEEEEEEEEEEE
Answer:
La gardeende
Step-by-step explanation:
An art teacher makes a batch of purple paint by mixing 3/4 cup red paint with 3/4 cup of blue paint. If she mikes 13 batches, how many cups of purple paint will she have?
Answer:
She will have 19 ¹/₂ batches of purple paint
Step-by-step explanation:
r + b = 1 bp
³/₄ r + ³/₄ b = 1 bp
(³/₄ + ³/₄) * 13 = x bp
⁶/₄ = 1 ¹/₂
1 ¹/₂ * 13 = 13 ¹³/₂ = 19 ¹/₂ batches
VARIABLE KEY:
r = red
b = blue
bp = batches of purple
x = total number of bp
Good luck!!