Light travels \(9.45*10^{15}\) meters in a year. There are about \(3.15*10^{7}\) seconds in a year. How far does light travel per second? Write your answer in scientific notation.
Answers
Answer:
300000000
Step-by-step explanation:
Take speed of light and divide it by the number of years and you should have your answer.
Related Questions
Rashid solved a fraction division problem using the rule “multiply by the reciprocal.” His work is shown below.
Which is the most accurate description of Rashid’s work?
Rashid solved the problem correctly.
Rashid multiplied the dividend by the divisor instead of finding the reciprocal.
Rashid multiplied the denominators instead of finding a common denominator.
Rashid multiplied with the reciprocal of the dividend instead of the reciprocal of the divisor.
Answers
Answer:ok
Step-by-step explanation:
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match each expression to the scenario it represents.
Answers
Answer:
im not sure but
Step-by-step explanation:
A goes in C, C goes in D, D goes in A, and B goes in B.
Round to the place of the underlined digit. 340,790 The rounded value of the whole number from the underlined digit is 4th grade queston. The underlined number is 3
Answers
Answer:300,000
Step-by-step explanation: if the 4 was a 5 or higher then the answer would’ve been 400,00 but since the number next to the underlined digit is 4 then it goes to 300,00. (4 or below leave it alone 5 or above give it a shove)
You find the place value and then if the number is 4 or below, the underlined place value stays the same, if it’s 5 or above it moves up a number, any place value after the underlined number becomes a 0 and leaves you with the answer of 300,000 :)
Elena would like to know the average height of seventh graders in her school district. She measures the heights of everyone in a random sample of 20 students. The mean height of Elena's sample is 62 inches, and the MAD (mean absolute deviation) is 2 inches. SELECT ALL TRUE STATEMENTS.
a. The median height of the sample must be between 59 and 63 inches.
b. Another random sample of 20 students is likely to have a mean between 57 and 65 inches
c. The mean height of these 20 students is likely to be the same as the mean height of all students in the district.
d. The mean height of these 20 students is likely to be the same as the mean height of a second random sample of 20 students.
e. Elena would be more likely to get an accurate estimate of the mean height of the population by sampling 40 people instead of sampling 20 people.
Answers
The statements that are true are:
- Another random sample of 20 students is likely to have a mean between 57 and 65 inches
- Elena would be more likely to get an accurate estimate of the mean height of the population by sampling 40 people instead of sampling 20 people.
Options B and E are the correct answer.
What is a mean?It is the average value of the set given.
It is calculated as:
Mean = Sum of all the values of the set given / Number of values in the set
We have,
a.
The median height of the sample must be between 59 and 63 inches.
This statement cannot be determined based on the given information.
The MAD provides information about the variability of the data, but not necessarily about the location of the median.
b.
Another random sample of 20 students is likely to have a mean between 57 and 65 inches.
This statement is likely to be true.
Since the sample mean is 62 inches and the MAD is 2 inches, it is reasonable to expect that another random sample of the same size would have a similar mean, within a few inches.
c.
The mean height of these 20 students is likely to be the same as the mean height of all students in the district.
This statement is uncertain.
The sample mean can be a good estimate of the population mean if the sample is representative, but we cannot be certain without more information about the sampling method.
d.
The mean height of these 20 students is likely to be the same as the mean height of a second random sample of 20 students.
This statement is uncertain.
The mean of a second random sample of the same size could be different due to random sampling variation.
e.
Elena would be more likely to get an accurate estimate of the mean height of the population by sampling 40 people instead of sampling 20 people.
This statement is likely to be true.
Generally, larger sample sizes tend to provide more accurate estimates of population parameters, as they are less affected by random sampling variation.
Thus,
The statements that are true are:
- Another random sample of 20 students is likely to have a mean between 57 and 65 inches
- Elena would be more likely to get an accurate estimate of the mean height of the population by sampling 40 people instead of sampling 20 people.
Learn more about mean here:
https://brainly.com/question/23263573
#SPJ7
Find each probability.
Answers
Answer:
5,9
Step-by-step explanation:
I think row A would be 5 and B would be 9 im sorry if im wrong
5 on top 9 on bottom
Please help me with this problem please?
Answers
Answer:
Lily would spend on each type of activity would be 222 minutes.
Step-by-step explanation:
please help due in 10 minutes will give brainliest.
Answers
Answer:
x = 1.5 ft.
Step-by-step explanation:
This is a right triangle, of course, so the Pythagorean Theorem applies.
Looking at this figure, I can see that the hypotenuse is 3.9 feet and one of the legs is 3.6 and feet.
The only side length missing is the second leg.
Here, I am solving for the second leg.
\(a^2+b^2=c^2\)
\(3.6^2+x^2=3.9^2\)
\(12.96 + x^2=15.21\)
\(15.21-12.96=2.25\)
\(x^2=2.25\)
\(x=1.5\)
Therefore, the length of the missing side is 1.5 ft.
I need help ASAP I will Name the Person that is right BRAINLEST
Answers
Answer:
84!!! THANKS.
Answer:
ITS 84
7 TIMES 3 TIMES 4 IS =84
Step-by-step explanation:
Thank you for helping me, if you do
Answers
Answer:
i am not sure if this completly helps but here are some options...
Step-by-step explanation:
x\(\geq\)-\(\frac{94}{9}\)
or
x\(\geq\)-10\(\frac{4}{9}\)
or
x\(\geq\)-10.4
Answer:
x-
or
x-10
or
x-10.4
Step-by-step explanation:
Which answer choice best represents 50/15
?
Answers
Answer:
3 1/3
Step-by-step explanation:
See attachment below
Answer:
Option (A) 3 1/3
Step-by-step explanation:
Let’s solve the improper fraction into a mixed fraction.
The simplified fraction will get a remainder but we I’ll not solve the remainder.
50/15
Quotient = 3
Remainder = 5
Fraction = 3 5/15
= 3 1/3
Hope my answer helps you ✌️
Mark BRAINLIEST
is what I did correct
Answers
Answer:
Yes.
Step-by-step explanation:
Gail has 5/9 of the money she needs to go to camp. If her grandmother gives her 1/3 more of what she needs, how much does she have all together?
A. 8/9
B. 3/9
C. 1/9
D. 1 1/9
Answers
The answer is: A 8/9
Step-by-step explanation:
The 1/3 the Grandma gave her is equal to 3/9. So the simple answer would be that 5 + 3 = 8 out of 9
PLS HELP EXAM
a) -2 = y + 5
c) –2x + 3x – 5 = 6 – 21
e) 4 – 14 = 5x
g) –42 + 20 = –2x + 13x
i) 7 = y – 2
k) –4 – 10 = 4y + 3y
m) 3y = –18
Answers
Answer:
a: y = - 7
c: x = -10
e: x = 2
g: x = -2
i: y = 9
k: y = -2
m: y = -6
Step-by-step explanation:
a: Subtract 5 on both sides
c: Add 5 on both sides then combine like terms
e: Combine like terms then divide by 5
g: Combine like terms then divide by 11
i: Add 2 on both sides
k: Combine like terms then divide by 7
m: Divide by three(won't add the number for some reason)
C: x=-10
E: x=-2
G: x=-2
I: y=9
K: y=-2
M: y=-6
Jerry climbed 210 feet in elevation.He then went down 300 feet.What integer represents his total change in elevation?
Answers
Answer:
-90 feet cause it’s 210 - 300 = -90
Answer:-90
Step-by-step explanation:
210-300=-90
Greg has
3 rows of stamps with 10 stamps in
each row. Greg says there are a total of
35 stamps. Use what you have learned
about multiples of 10 to explain why
Greg is incorrect.
Answers
Answer:
All multiples of 10 end with 0 only. So 35 must be wrong as it ends with 5. Therefore, Greg is incorrect.
Over the last 4 years, Michael has earned $240 interest on an initial investment of $2,000. What simple annual interest rate is the bank paying on this account?
Answers
Answer:
your answer should be 3%
Step-by-step explanation:
hope this helped good luck
-5x=-y-10
find the x and y intdrcept
Answers
Y Intercept : (0,-10)
x-intercept = 2
y-intercept = -10
Step-by-step explanation:The x and y-intercepts show where the line crosses the axes.
X-Intercept
The x-intercept is where the line crosses over the x-axis. For linear functions, there is always exactly one x-intercept. The x-intercept occurs where y = 0. So, to find the x-intercept we can plug 0 in for y and solve for x.
-5x = 0 - 10-5x = -10Then, divide both sides by -5.
x = 2So, the x-intercept is at (2,0).
Y-Intercept
Similarly, the y-intercept is where the line crosses over the y-axis. Again, for linear functions, there is always one y-intercept. The y-intercept occurs where x = 0. So, to find the y-intercept we can plug 0 in for x and solve for y.
-5(0) = -y - 100 = -y - 10Then, add y to both sides.
y = -10So, the y-intercept is (0,-10).
Elena biked 8 miles on Saturday. Use the double number line to answer the questions. Be prepared to explain your reasoning.
A) What is 100% of her Saturday distance?
B) On Sunday, she biked 75% of her Saturday distance. How far what that?
C) On Monday, she biked 125% of her Saturday distance. How far was that?
Answers
Answer: A. 8 miles
B. 6 miles because 3/4 of 8 is 6
C. 10 miles
Step-by-step explanation:
100 POINTS+BRAINLIEST 8TH GRADE MATH PT 6: SIMPLIFY THE GIVEN EXPRESSION -I know how to do the distributive property but i don't know the rules to remember when dealing with rearranging subtraction sings like the one in the first set of parenthesis. please tell me how to accurately simplify an expression with those subtraction signs
thanks so much!!
Answers
Answer:
\(-x + 9\)
Step-by-step explanation:
Hello!
We want to combine any like terms and distribute the signs properly to the terms in the parentheses.
First, remove the parentheses by distributing the signs:
\(-(2x - 1) + 3(x + 4) - 2(x + 2)\)\(-(2x) - (-1) + 3(x) + 3(4) - 2(x) - 2(2)\)Remember that negative times negative is positive
\(-2x + 1 + 3x + 12 - 2x - 4\)\(-2x + 3x - 2x + 1 + 12 - 4\)\(-x + 9\)
The simplified form is \(-x + 9\).
Another way to think about the negative sign is by replacing it with -1, so essentially you are multiplying the whole parentheses by -1.
Option D
Giving away 60 points, answer quick!!
What is the exact circumference of the circle?
Responses
10π ft
20π ft
40π ft
60π ft
Answers
Answer:
40π ft. is the circumference of the circle.
Step-by-step explanation:
1. Multiply the area by two (2). That is your answer.
Hope this works out for you!! :)
2(3) I NEEEEED HELPLPLPLPLP
Answers
Answer:6
Step-by-step explanation:
Answer:
6
Step-by-step explanation:
2(3) can also be written as 2 x 3 which equals 6
2(3) means you are adding 2, 3 times.
2 + 2 +2 = 6
Which number completes the table for y = x2 ?
x y
0 0
4 16
-3 __
A. 6
B. -6
C. 9
D. -9
Answers
Answer:
C.9what is it like 4x12 or 4x2 or 4+12?-3 x -3 = 9
Your welcome
(Rewriting Rational Numbers LC)
Compare negative three and five tenths repeating and negative ten thirds using symbols <, >, or =.
negative three and five tenths repeating is less than negative ten thirds
negative three and five tenths repeating is greater than negative ten thirds
negative ten thirds is equal to negative three and five tenths repeating
negative ten thirds is less than negative three and five tenths repeating
Answers
Answer:
the third answer
Step-by-step explanation:
20 points to whoever gets these right!! <3
Answers
Answer:
1st one 8/20
Step-by-step explanation:
What could I have dropped?
A. my croissant
b. my phone
c. mountain dew
Answers
Answer:
a croissant
Step-by-step explanation:
please help me with problem with clear explanation
Answers
Answer:
this doesn't even make any sense
Step-by-step explanation:
both -5.4 and 5.4 go off the m.f grid
•The finishing point will be located in quadrant S
Explanation: the x and y values determine where the points are located on the graph
2. The starting point is (-5.4, 3) and the checkpoint is (5.4, 3). The difference is they’re both in different quadrants, and one has a negative value, and the other is positive. They are related because they’re all in one race, and the checkpoint will be involved in the race, most likely between the start and finish points, located in quadrant P.
I hope that helps, merry Christmas and happy holidays! :)
please hurry i will give brainlyist if its corcect
Answers
Answer:
what is the Question
Step-by-step explanation:
Answer: What's the question about?
Step-by-step explanation:
ToPg pls help me with some aleks
Answers
Answer: well what is 4 times 12?
Step-by-step explanation: you are suppost to put the side of the triangle that has the line on, to the other side to make it a square
I'M SORRY WHAT IS THY ANSEWR?
Answers
Because there’s 36 possible solutions between the 2 dice and only one of those could get you a sum of 2. So 1 out of 36 or 1/36.
Work out the height of this triangle
b = 4.7mm
A= 107.16mm2
B=base
A=area
