Answer:
Number of moles Aluminium sulfide
1 mole of sulfide contains 150 g
Therefore; 16.2/150
= 0.108 moles
The mole ratio of Al2S3 : Al(OH)3 is 1:2
Therefore; moles of Aluminium hydroxide will be;
= (0.108 × 2)
= 0.216 moles
But, 1 mole of Al(OH)3 contains 77 g
Therefore, the mass of aluminium hydroxide is
0.216 moles × 77
= 16.632 g
Step-by-step explanation:
A certain coin is a circle with diameter 36 mm. What is the exact area of each side of the coin?
The exact area of each side of the coin is
mm?
Answer:
P=36pi
A=3324pi
Step-by-step explanation:
36 diameter so 18 radius but i dont know about what do you mean by side of the coin is it peremeter?
if it is then it is 36 pi
Area will be 18^2 pi which is 324 pi
What is the total Mary would pay if her lunch bill was $15.00 with a 12% tip?
Answer:
$16.80
Step-by-step explanation:
Add $15.00 and 12% and get $16.80
The absolute value of -15 is -15 because -15 is 15 units to the left of zero
Answer: False
Step-by-step explanation: The absolute value of -15 is 15.
IT WOULD MEAN THE WORLD TO ME IF SOMEONE HELPED< TY IN ADVANCED!
Answer: 200.96
Step-by-step explanation:
The find the surface area of a circle use its formula
A =4 pi * r^2
A = 4* 3.14 * 4^2
A = 12.56 * 16
A = 200.96
Which one of the points A(5.2). B(6,-3) and C(4.7) is the mid-point of the other two? Check your answer by calculating two distances.
Answer:
A is the midpoint
Step-by-step explanation:
Given
A(5.2) B(6,-3) and C(4.7)
Required
Which is the midpoint
Midpoint is calculated using:
[tex](x,y) = \frac{1}{2}(x_1+x_2,y_1+y_2)[/tex]
Testing A as the midpoint, we have:
[tex](5,2) = \frac{1}{2}(6+4,-3+7)[/tex]
[tex](5,2) = \frac{1}{2}(10,4)[/tex]
[tex](5,2) = (\frac{1}{2}*10,\frac{1}{2}*4)[/tex]
[tex](5,2) = (5,2)[/tex]
The above equation is true. Hence, A is the midpoint of B and C
It’s given that Y bisects XZ
-So I just really need the answers for the blanks. If you don’t know the answer that’s fine :)!
XY≅YZ ; definition of segment bisector
Reflexive Property
XWY ; ZWY ; SAS
CPCTC
I'm pretty sure this is right!!
3. Explain why the polynomial 34 + 5x3 - 7x2 + 3x has a degree 3 and not 4.
Answer:
See explanation below
Step-by-step explanation:
The degree of a polynomial is the LARGEST power at which the variable/s appear in their expression.
Notice that in the given polynomial, the highest power for the variable x is 3, from the term 5 x^3.
There is no other term with higher power for x.
The variable appear in the expression [tex]3^{4} + 5x^{3} + 7x^{2} + 3x[/tex] x which has highest power 3 not 4 .
We have to explain, why the polynomial [tex]3^{4} + 5x^{3} + 7x^{2} + 3x[/tex] has a degree 3 and not 4.
According to the question,
A polynomial's degree is the highest or the greatest power of a variable in a polynomial equation.
The degree of a polynomial is the largest power at which the variable appear in their expression.
[tex]Polynomial = 3^{4} + 5x^{3} + 7x^{2} + 3x[/tex]
The given polynomial, the highest power for the variable x is 3, from 5 .
Hence, The variable appear in the expression [tex]3^{4} + 5x^{3} + 7x^{2} + 3x[/tex] x which has highest power 3 not 4 .
To know more about Degree click the link given below.
https://brainly.com/question/21726505
At Davidson's Bike Rentals, it costs $41 to rent a bike for 8 hours. How many hours of bike use does a customer get per dollar?
Answer:
0.192 hour
Step-by-step explanation:
41$ / 8 = 0.192 hours = 11.703 minutes
Please I need help me!!!
What is a piggyback mortgage?
A. Two interest rates on a single mortgage
B. Two mortgages on the same house
C. Two mortgages for two different houses
D. One mortgage for a portion of the house value and a cash down
payment for the remainder
Answer:
is two mortgages for two different hourses.
Answer:
Two mortgages on the same house (confirmed).
Step-by-step explanation:
Aph3x
What is a better buy.
A 12-pack of Pokemon cards for $8.50
or
A 6-pack of Pokemon cards for $5.75
Answer:
12 pack is better
Step-by-step explanation:
It is better because it's just a little more money and it has more packs then 6 pack.
Jack runs 3 miles 4 times a week. How many miles does Jack run in 6 weeks
I NEED IT KNOW PLEASEEE
Answer:
360
Step-by-step explanation:
The theoretical probability of drawing a red card from a deck of cards is 1:2. Micheal drew 20 cards and received 7 red and 13 black.
What is the best explanation for this result.
A. Theoretical results are correct, regardless of how many cards are drawn.
B. Two decks of cards should be used.
C. Simulations do not always produce theoretical results.
D. More cards needed to be drawn.
Answer:
A. Theoretical results are correct, regardless of how many cards are drawn.
Step-by-step explanation:
Answer: A. Theoretical results are correct, regardless of how many cards are drawn.
Step-by-step explanation:
Plato
Given f(x) = x^2 + 3 , work out the value of f(4)
Answer: 19
Step-by-step explanation:
[tex]f(4)=(4)^2+3=16+3=19[/tex]
Answer:
f(4) = 19
Step-by-step explanation:
f(x) = x^2 + 3
plug in 4 for the xs
f(4) = 4^2 + 3
f(4) = 16 + 3
f(4) = 19
Please answer this question immediately!!! 11 points!
Answer:
Answer x=-5
Step-by-step explanation:
Alexandra is following a recipe that requires 3/4 a cup of water she needs to make 10 servings how many cups of water does Alexandra need
Answer:
Amount of water needed for 10 serving = 7.5 cup
Step-by-step explanation:
Given:
1 serving needed water = 3/4 cup
Find:
Amount of water needed for 10 serving
Computation:
Amount of water needed for 10 serving = 10[3/4]
Amount of water needed for 10 serving = 7.5 cup
What is the square root of 255683
Answer:
505.651065
Step-by-step explanation:
It will basically be converted into a decimal.
Can someone help me please
what number must you add to complete the square?
x^2+14x=3
Answer: 49
Step-by-step explanation: In order to complete the square, you need a perfect square trinomial on the left side of the equation.
The question is, what is the number we need?
Well it comes from a formula. The number that is added to both sides
comes from half the coefficient of the middle term squared.
So that's half of 14 which is 7, squared which is 49.
I need help with this what is the awnser
Answer:
x = 23
Step-by-step explanation:
For this figure, we know we are dealing with a 90 degree angle since there is a small square in the figure, therefore we can set up the equation...
65 + (x + 2) = 90
In this sense, the parenthesis are unnecessary.
67 + x = 90
-67 -67
x = 23
Hope this helps!
:)
The maximum water depth at Lake Tahoe, California in 2014 was 1644 feet. Because of the drought, the water level has been decreasing at an average rate of 6.2 feet per year. Create a model for the depth of the lake
Answer:
i would suggest putting this in a line graph
Step-by-step explanation:
the y axis can be the depth while the x axis can be the time passed since 2014
what is the difference between multiplying fractions and adding/subtracting fractions? complete sentances please
Answer:
See Explanation!
Step-by-step explanation:
When multiplying fractions, you do not need a common denominator, and the entire fraction gets multiplied across, however when adding or subtracting fractions, you must have a common denominator, and then only compute the numerator, as the bases are already the same
Use the Zero Product Property to solve the equation.
(3y − 9)(12y + 2) = 0
Answer:
Exact form would be like this, y=3, -1/6
Decimal form would be like this, y=3, -0.16666666666666666666666 and keep adding 6's.
Step-by-step explanation:All you do is isolate the variable by dividing each side by factors that don't contain the variable. Sorry I took so long I'm trying to answer multiple problems at once. Hope this helps you out. : )
Help me pls pls pls
Answer:
1,3
Step-by-step explanation:
1,3
Find the value of given trigonometric function cot (-330°)
Answer:
The exact value should be
[tex] \sqrt{3} [/tex]
Step-by-step explanation:
Though you can get this directly out from your calculator, but you can utilize the opposite angle identities, cot(-
θ)=-cot θ, then use the trig identity, which is
[tex] \cot(θ) = \frac{ \cos(θ) }{ \sin(θ) } [/tex]
So cot (-330)=cos (-330)/sin (-330)
Which fraction is equivalent to 0.8?
Answer:
4/5
Step-by-step explanation:
.8 means 80/100 (divide both top and bottom by 20)
Answer: 4/5
Step-by-step explanation:
What is the length of side c?
A)
5 ft
B)
25 ft
81 ft
D)
128 ft
the answers is here is the answer A)5
Answer:
the answer is 5 ft
Step-by-step explanation:
A stick was broken into two pieces. The length of the first piece is 28 cm more than the second piece. The total length of the two pieces is 56 cm. Find the length of the first piece.
Add the fractions. Reduce the answer to lowest terms.
8\9+1/9
Answer:
1
Step-by-step explanation:
8 + 1 = 9/9
- -
9. 9