Answer:
68.42%
Step-by-step explanation:
We need to find the percent of Cr in [tex]Cr_2O_3[/tex].
Mass of Cr = 52 amu
Mass of O = 16 amu
Firstly, we will find the molar mass of [tex]Cr_2O_3[/tex] as follows :
M = 2(52) + 3(16)
M = 152 amu
Percent of Cr in [tex]Cr_2O_3[/tex] will be :
[tex]Cr=\dfrac{2\times 52}{152}\times 100\\\\=68.42\%[/tex]
Hence, the required percentage is 68.42%.
What is the us as a decimal number
Answer:
-86.07
Step-by-step explanation:
Theres a negative 86 and a 7 over 100.
Answer:
-86.07
Step-by-step explanation:
An oblique prism has a volume of 144 cubic units. The area of its base is 24 square units.
Answer:
ok..... so what is the question?
Step-by-step explanation:
which one is the bigest and which one is the lowest
5 7/8
6
5.5
5 3/4
Answer:
Greatest to Least order: 6, 5 7/8, 5 3/4, 5.5
Step-by-step explanation:
First it's 6, then it's 5 7/8 because 5 7/8 = 5.875, then 5 3/4 because 5 3/4 = 5.75, and then 5.5 which is the lowest number.
For a specific location in a particularly rainy city, the time a new thunderstorm begins to produce rain (first drop time) is uniformly distributed throughout the day and independent of this first drop time for the surrounding days. Given that it will rain during some period on both of the next two days, what is the probability that the first drop of rain will be felt between 9:15 AM and 2:50 PM on both days
Answer:
The required probability = 0.0541
Step-by-step explanation:
From the given information:
The probability that it will rain throughout the day is uniformly distributed & independent of the surrounding days.
Assuming that (P₁) represents the probability that it will rain between 9:15 am to 2:50 pm on day 1.
The time interval is 5 hours 35 minutes long.
= 5.583333 hours long
Thus;
P₁ = 5.583333/24
P₁ = 0.2326
Assuming that (P₂) represents the probability that it will rain between 9:15 am to 2:50 pm on day 2.
P₂ = P₁ = 0.2326
Therefore, the total probability = P₂ × P₁ (independent events)
= 0.2326 × 0.2326
= 0.05410276
≅ 0.0541
There are three customer service operators manning a helpline: Alex, Bobby, Charlie. Charlie is relatively new and takes one third as many calls as Bobby. Alex handles 6 times as many calls as Charlie.
What proportion of calls does Bobby handle?
Answer:
Bobby answers 30% of all phone calls.
Step-by-step explanation:
To determine the proportion of calls that Bobby answers in the call center, knowing that Charlie handles one third as many calls as him, and that Alex handles six times as many calls as Charlie, the following equivalence must be made:
A = 6 C (1/3B x 6 = 2B)
B = B
C = 1/3 B
2B + B + 1/3 B = 100
3 1/3 B = 100
3.33 B = 100
B = 100 / 3.33
B = 30
Therefore, Bobby answers 30% of calls, Alex answers 60% and Charlie 10%.
A = 2lw – 21h + 2 wh
Solve for h
Given point B is located at (-4,2). What is the image of B after a reflection across the y-axis?
Answer:
(-4,-2)
Step-by-step explanation:
solve
(4x^2+4x)/(2x^2-2)
(4x²+4x)/(2x²-2)
4x(x+1)/2(x²-1)
2x(x+1)/((x+1)(x-1))
2x/(x-1)
Answer:
[tex]\frac{2x}{x-1} \\[/tex]
Step-by-step explanation:
I'm taking a class in geometry and I don't know how to work out these kind of questions
Answer:
140 degrees
Step-by-step explanation:
supplementary angles
Answer:
<2=140
Step-by-step explanation:
For this problem since the whole angle is 180 all you do is do 180-40 and you get 140 which is <2
Graph y=6x + 2 −3x2
a =
b =
c =
Answer:
Graph y=3x^2+6x-2. y=3x2+6x−2 y = 3 x 2 + 6 x - 2. Find the properties of the given parabola. Tap for more steps... Rewrite the equation in vertex form.
Step-by-step explanation:
Then plug this x back into the original equation, y=3x2−6x−2
Find
how
many times
21
+
9 goes
into 131
2
Answer:
it goes in 4 times I rounded up to 30 and 30 times 4 is around there
Find all critical points of the given plane autonomous system. (Enter your answers as a comma-separated list.) x′ = x 12 − x − 1 2 y y′ = y(20 − y − x)
Answer:
the critical points are (0,0) , (0, 20), (12, 0) , (4,16)
Step-by-step explanation:
To consider the autonomous system
[tex]x' =x (12 -x - \dfrac{1}{2})[/tex]
[tex]y' = y( 20 -y - x)[/tex]
The critical points of the above system can be derived by replacing x' = o and y' = 0.
i.e.
[tex]x' =x (12 -x - \dfrac{y}{2}) = 0[/tex]
[tex]\dfrac{x}{2} (24 -2x - y) = 0[/tex]
x = 0 or 24 - 2x - y = 0 ----- (1)
Also
[tex]y' = y( 20-y-x) = 0[/tex]
y( 20 -y - x) = 0
y = 0 or 20 - y - x = 0 ----- (2)
By solving (1) and (2);
we get x = 4 and y = 16
Suppose x = 0 from (2)
y = 20
Also;
if y = 0 from (1)
x = 12
Thus, the critical points are (0,0) , (0, 20), (12, 0) , (4,16)
A painter can paint 180 square feet per hour. He charges $0.35 per square foot. Today he paints for 3.5 hours. How much will he charge?
Answer:
i think it's 1800
Step-by-step explanation:
if it's wrong i'm so sorry :)
The price charged for 630 square feet is $220.5
If a painter can paint 180 square feet per hour, the amount he will paint in 3.5 hours will be 3.5 * 180 = 630 square feet
If the painter charges $0.35 per square foot, the price for 630 square feet will be expressed as 0.35 * 630 = $220.5
Hence the price charge for 630 square feet is $220.5
learn more here: https://brainly.com/question/24191335
Write an inequality that represents the verbal expression. 9 less than a number n is less than 17
Answer:
9<n<17.
Step-by-step explanation:
4. In a normal distribution with u=150, o = 12.5 find P(x < 145).
Answer:
i know it hard but i know u get there
!!!! HELP PLEASE !!!! WILL GIVE BRAINLIEST!!!!!!!!!
Find the error and explain why it is wrong: (THE ERROR IS NOT EXTRANEOUS SOLUTIONS)
Step ___ is incorrect because ____________. Instead, you should _____________________.
Answer:
Step 1 is incorrect because it was mutiplied. Instead, you should divide.
Step-by-step explanation:
Radha is trying to choose between two bike rental companies, Company A and Company B.
Company A charges a $25 initial fee and an additional $5 for each hour rented. Company B charges an initial $18 fee and an additional $6 for each hour rented.
The total cost to rent a bike from Company A can be represented by the equation y = 5h + 25, where h represents the number of hours rented and y represents the cost, in dollars.
The total cost to rent a bike from Company B can be represented by the equation y = 6h + 18.
For how many hours of rental is the amount charged by the two companies the same? What is the cost, in dollars, of renting the bike for this many hours?
Part A:The number of hours when the rental amount charged will be the same is
Part B:The cost of renting the bike for this many hours is
Answer:
Part A. After 7 hours the amount charged will be the same
Part B. The cost of renting the bike for that many hours (7) will be 60$.
Step-by-step explanation:
5h + 25 = 6h + 18
5h - 6h = 18 - 25
-h = -7
h = -7/-1
h = 7
Company A.
y = 5h + 25
y = (5*7) + 25
y = 35 + 25
y = 60
Company B.
y = 6h + 18
y = (6*7) + 18
y = 42 + 18
y = 60
What does the data tell you about the eugenics
movement?
Answer:
B
Step-by-step explanation:
More people were sterilized in Virginia than Michigan.
Joseline has 347 marbles. Ever has 4 times as many as Joseline. Pablo has 799 fewer than Ever. How many marbles does Pablo have? Joseline tiene 347 canicas. Ever tiene 4 veces más que Joseline. Pablo tiene 799 menos que nunca. ¿Cuántas canicas tiene Pablo?
Answer:
its D
Step-by-step explanation:
Write and solve this expression:
Subtract 4 from 19, then divide by 3
Answer:
5
Step-by-step explanation:
Need help please it’s due today show work
Answer:
D
Step-by-step explanation:
Consider the function f(x) = 6 sine (x minus StartFraction pi Over 8 EndFraction) + 8. What transformation results in g(x)6 sine (x minus StartFraction 7 pi Over 16 EndFraction) + 1?
Translate StartFraction 5 pi Over 16 EndFraction units left and 7 units up.
Translate StartFraction 5 pi Over 16 EndFraction units right and 7 units up.
Translate StartFraction 5 pi Over 16 EndFraction units left and 7 units down.
Translate StartFraction 5 pi Over 16 EndFraction units right and 7 units down.
Answer:
C
Step-by-step explanation:
edge correct
Answer:
c
bdlkbcksBIBKHBKJBCKSDBVKb vdvkjB;KJBbxjsabcjksbckjbcdmbcbncblkscbn bvklhkhbfmnnsvfuyl. jhilcvew;gflwuw
What is the product of (9)(-9)(-1)? -
81
-1
1
81
Answer:
81
Step-by-step explanation:
Answer:
D.81
Step-by-step explanation:
happy chrismas every one
plz mark me brainliest
Rajiv paid using a 10 bill how much will she receive
Answer:
She will receive the change
Step-by-step explanation:
there no context to this question
Answer:
shes gonna receive her change
Step-by-step explanation:
;-; there is no instruction to your question
Find the value of x. Round to the nearest degree.
15
12
Answer:
153 degrees
Step-by-step explanation:
15+12=27
180-27=153
A washer and a dryer cost $757 combined. The washer costs $57 more than the dryer. What is the cost of the dryer?
Answer:
814 coz when you add these number you got 814
The two figures below have a scale factor of 3 : 1. What is the value of y?
since the scale factor is 3, just multiply the corresponding side by 3
this means that y=12
hope this helps!! :)
1.) Look at the figure below.
A
+5
3x
B
What is the measure of ZB?
A 35°
B
71°
С
760
D 105°
Answer:
D
Step-by-step explanation:
Use the line tool to graph the equation on the coordinate plane.
y = 3/4x
Step-by-step explanation:
in the equation y=mx+b, m corresponds to the slope, and b corresponds to the y-intercept. Since b is 0 at this case, we will start at (0,0). From here you can graph the line with the slope. Since it is 3/4, you would move up 3 units, and to the right 4 units to end up with the point (4,3). Now you have the two points (0,0) and (4,3), so all you need to do is connect them to form the line.
Identify the type of sequence shown and select the appropriate response.
4, 24, 144, 864, ...
A) Geometric sequence, common ratio is 6
B) Geometric sequence, common ratio is 20
C) Arithmetic sequence, common difference is 6
D) Arithmetic sequence, common difference is 20
Answer:
the answer is A
Step-by-step explanation:
if you multiple 6 to 4 you get 24. if you multiple 24 to 6 you get 144. if you multiple 144 to 6 you get 864.