Answer:
Number of moles = 41.67 (Approx)
Number of carbon atom = 250.97 x 10²³ (Approx)
Step-by-step explanation:
Given:
Amount of carbon = 500 g
Find:
Number of moles
Number of carbon atom
Computation:
Number of moles = 500 / Atomic number of weight
Number of moles = 500 / 12
Number of moles = 41.67 (Approx)
Number of carbon atom = Number of moles x Avogadro number
Number of carbon atom = 41.67 x 6.023 x 10²³
Number of carbon atom = 250.97 x 10²³ (Approx)
Help plz ASAP helppppp
Answer:
Same-side interior angles
Step-by-step explanation:
Two helicopters leave a heliport at the same time. The first flies 160km/h in a direction of 290 degrees. The second flies 100km/h in a direction of 250 degrees. After 3 hours, how far apart are the helicopters? Round your answer to the nearest kilometer.
Answer: 315 km
Step-by-step explanation:
If the angle θ is measured from the x-axis, and we have a magnitude A, we can find the rectangular coordinates as:
Ax = A*cos(θ)
Ay = A*sin(θ)
Then:
The first helicopter has a speed of 160km/h, and it's angle is 290°.
Then the components will be:
Vx = 160km/h*cos(290°) = 54.7 km/h
Vy = 160km/h*sin(290°) = -150.4 km/h
Then the point location as a function of time, can be written as:
(where i assumed that the initial position of both helicopters was (0, 0))
P1(t) = (54.7 km/h*t, -150.4 km/h*t)
where t is time in hours.
We can do the same for the other helicopter:
The speed is 100km/h, and the angle is 250°
Then:
Vx = 100km/h*cos(250°) = -34.2 km/h
Vy = 100km/h*sin(250°) = -94 km/h
Then the point location as a function of time, will be:
P2(t) = (-34.2km/h*t, -94 km/h*t)
After 3 hours, the position of each helicopter will be:
P1(3h) = (54.7 km/h*3h, -150.4 km/h*3h) = (163.1 km, -451.2 km)
P2(3h) = (-34.2km/h*3h, -94 km/h*3h) = (-102.6km, -282km)
Now we can calculate the distance between these two points.
Remember that the distance between the points (a, b) and (c, d) is:
D = √( ( a - c)^2 + (b - d)^2)
In this case the distance will be:
D = √( (163.1 km - (-102.6km))^2 + (-451.2 km - (-282km))^2)
D = √( (163.1 km + 102.6km)^2 + (-451.2 km + 282km)^2)
D = 315km
the edge of a cube whose total surface area is 384 sq.cm is _cm
1)80
2)8
3)64
Solve for X.
A. 168
B. 180
C. 21
D. 42
Answer:
Answer = C
Angle x = 21
Property = Angle sum of Triangle
A recipe calls for 3 1/2 cups of milk and makes 10 servings. How many cups of milk are needed for 8 servings? (Hint: Set up a proportion, don’t forget to label!)
Answer:
2.8 or 2 4/5
Step-by-step explanation:
Here's our proportion of cups of milk to servings
3 1/2:10 For my sake I'm using decimals
3.5:10
Now let's try to get our servings to 1 (a unit rate)
0.35:1 I divided by 10 on each side
We need 8 servings not 1 so let's multiply 8 on each side
2.8:8
In case you want it in fraction form we can do 2 8/10 and simplify it to 4/5 by dividing by 2. Our answer is 2.8 or 2 4/5 cups of milk for 8 servings.
Given f(x) = -x + 1, solve for x when f(x) = 0.
Answer:
1
Step-by-step explanation:
0=-x+1
-x=-1
x=1
Write 750% as a decimal and as a fraction in simplest form
Yooooooo somebody help me...
Answer:
B
Step-by-step explanation:
Pamela's town voted on a new speed limit. 70% of the 20 votes were in favor of the new speed limit. How many votes were in favor?
Answer:
14 votesStep-by-step explanation:
70% of the 20 votes =0.7*20 = 14 votesAnswer:
14 votes
Step-by-step explanation:
To find 70% of 20, first convert the percentage into a decimal. Move the decimal place two places to the left.
Now take the 20 and multiply it by 0.70.
You will end up with 14 as your answer.
A road construction company can repair 1/4 mile of road each day. Road X is 7 ½ miles long, and Road Y is 5 ¾ miles long. How many more days will Road X take to repair than Road Y? Answer value
Answer: 7 days
Step-by-step explanation:
From the question, we are informed that a road construction company can repair 1/4 mile of road each day. We are further told that Road X is 7 ½ miles long. The number of days that it'll take to repair road X will be:
= 7 1/2 ÷ 1/4
= 15/2 × 4/1
= 30 days
Road Y is 5 ¾ miles long. The number of days that it'll take to repair road Y will be:
= 5 3/4 ÷ 1/4
= 23/4 × 4/1
= 23 days
The difference in the number of days that Road X take to repair than Road Y will be:
= 30 days - 23 days
= 7 days
what is the range of this function (I NEED AN ANSWER RLLY FAST PLSSSS)
Answer:
d
Step-by-step explanation:
the first oval's domain and the second's range. so you just choose the choice that includes all the values in the ranger.
(giving brainliest :)) help please!) Which expression uses the commutative property to make it easier to evaluate 2/3 x 2/4 x 27
Answer:
2/3 x 27 x 1/4
Step-by-step explanation:
ANSWER quickly
According to the credit calendar below, what is the average daily balance?
Answer: 22,040/30= 734.666666667
Step-by-step explanation:
As per linear equation, the average daily balance on the given credit calendar is $716.17.
What is a linear equation?A linear equation is an equation where the highest degree of the variable is one.
Given, the daily balances for the given 30 days are $640, $640, $640, $640, $640, $640, $640, $640, $765, $765, $765, $765, $765, $820, $820, $820, $720, $720, $720, $720, $720, $720, $720, $720, $720, $720, $720, $720, $720, $720.
Therefore, the total balance in the given 30 days period is = [$640 × 8 + $765 × 5 + $820 × 3 + $720 × 14] = $21485.
Now, the average daily balance = $[tex]\frac{21485}{30}[/tex] = $716.17
Learn more about a liner equation here: https://brainly.com/question/14089804
#SPJ2
Determine which of following table is NOT a function.
Answer: C
Step-by-step explanation:
C beacause one X cannot have two different Y values
Increase 2800kg
by 21
Answer:
3388 kg
Step-by-step explanation:
If you mean to increase by 21%, then
You may
100% + 21% = 121%
2800 x 121/100
2800 x 1.21
= 3388 kg
If Xavier can read 114 pages in 30 minutes, how many pages can he read per minute?
Answer:
3.8 pages per minute
Step-by-step explanation:
what what you do is divide 114 by 30.
Answer:
3.8 pages per minute.
Step-by-step explanation:
Divide 114 pages by 30 minutes to get 3.8.
2(6-2x)-2x=2(5+x)-4 value of x?
Answer:
x= 3/4
Step-by-step explanation:
I looked it up. Hope this helps
Answer:
x = [tex]\frac{3}{4}[/tex]
Step-by-step explanation:
Given
2(6 - 2x) - 2x = 2(5 + x) - 4 ← distribute parenthesis on both sides
12 - 4x - 2x = 10 + 2x - 4 ← simplify both sides
12 - 6x = 6 + 2x ( subtract 2x from both sides )
12 - 8x = 6 ( subtract 12 from both sides )
- 8x = - 6 ( divide both sides by - 8 )
x = [tex]\frac{-6}{-8}[/tex] = [tex]\frac{3}{4}[/tex]
The heights of basketball players (cm) in one NBA team are given as follows. {158, 180, 185, 192, 192, 195, 196, 198, 200, 205, 213}. The data can be represented in the box-and whisker plot below (picture).
(a) Find the values of a, b , c, d, and e.
(b) Calculate d-b. What does it represent?
(b) Calculate e-a. What does it represent?
Answer:
Below in bold.
Step-by-step explanation:
(a) a = 158.
The median = the middle value = c = 195.
The lower quartile = the middle value of the first 5 heights = 185 = b.
The upper quartile = the middle value of the last 5 heights = 200 = d.
(b) d - b = 200 - 185 = 15 = the interquartile range (IQR).
(c) e - a is the range = 213 - 158 = 55.
a line has a slope of -2/3 and passes through the point (-3, 8). what is the equation of the line
Answer:
y=-2/3x+6
Step-by-step explanation:
hope this helps
If it is supposed to be 33 degrees Fahrenheit on Monday morning, how many degrees in Celsius will that be? (Hint: 32 degrees Fahrenheit= 0 degrees celsius) Do you know what the conversion formula is to change Fahrenheit to Celsius?
Answer:
.6 Celsius
Step-by-step explanation:
actual answer given was .555556 but simply round up
I hope this helps you
Stacy paid $54 for 6 pizzas, which is a rate of $ ? per pizza.
Answer: it’s 9
Step-by-step explanation:
54 divined by 6 = 9
89 divide 8 in decimal
i'll mark you has brainliest
Answer:
y= 5 x+ 1
Step-by-step explanation:
Answer:
i think its 21x + 11 = y
Step-by-step explanation:
sorry if this is wrong, if it is someone correct me.
what is 0.16(line over six) in reduced form
Answer:
1/6
Step-by-step explanation:
hope this helps.
50% of the tickets sold at a school carnival were early-admission tickets. If the school sold 22 tickets in all, how many early-admission tickets did it sell?
Answer:
11
Step-by-step explanation:
50% of 22 is 11
1. If all the sides of one triangle are congruent to all the sides of another triangle, the two
triangles are congruent by:
a. SAS postulate
b. SSS postulate
c. AAA postulate
d. None of these.
Answer:
bvs rverve wber
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Are the polygons similar? If they are, write a similarity statement and give the scale factor. will make brainiest
Answer:
the first dot
Step-by-step explanation:
The polygons are not similar.
What is the probability of spinning an odd number on the spinner below?
Which of these is equivalent to 1 over x to the power of 5 ? 1 fifth x negative x to the power of 5 x to the power of 5 x to the power of negative 5 end exponent
Answer:
x^-5 = x to the power of negative 5
Step-by-step explanation:
Which of these is equivalent to 1 over x to the power of 5 ?
Mathematically this is expressed as
(1/x)⁵
We have a rule when it comes to expressing power
(1/a)^b = a^-b
Hence, applying this rule to our question
(1/x)⁵ = (1/x)^5
= x^-5
This is written in words as:
x to the power of negative 5
Can someone help me with this fast please?
Thank You
Answer:
3/10 is greater
Step-by-step explanation:
2/7 is equal to 0.29... and 3/10 is equal to 0.3
So, 0.3 is bigger than 0.29
There are more boxes shaded in the picture to the right than the picture to the left. 21 > 20