Answer:
7.31 x 10^-23
Answer: CO2 (1 atom of carbon and 2 atoms of oxygen)
3.34 x 10^-24
Answer: H2 (2 atoms of hydrogen)
2.821 x 10^-23
Answer: NH3 (1 atom of nitrogen and 3 atoms of hydrogen)
7.64 x 10^-23
Answer: NO2 (1 atom of nitrogen and 2 atoms of oxygen)
Step-by-step explanation:
hope this helps :)
7.31 x 10^-23 = CO2 i.e. 1 atom of carbon and 2 atoms of oxygen
3.34 x 10^-24 = H2 (2 atoms of hydrogen)
2.821 x 10^-23 = NH3 (1 atom of nitrogen and 3 atoms of hydrogen)
7.64 x 10^-23 = NO2 (1 atom of nitrogen and 2 atoms of oxygen)
Learn more: https://brainly.com/question/4804019?referrer=searchResults
If Olga was G years old two years ago, how old is she now? How old will she be in five years?
Now Olga is _ years old. In five years she will be _ years old.
Answer:
G+2 present age of Olga
and (G+2)+5 her age in five years.
hope it helps.
If k is a constant, what is the value of k such that the polynomial 2ky^-kx-8 is divisible by (x-2)
Answer:we have that
k² x³-6kx+9
we know that
The Remainder Theorem says: If the polynomial f(x) is divisible by a bynomial (x-a) then the number "a" is a root of the polynomial f(x)
so
x=1 is a root of the polynomial
therefore
for x=1
k² x³-6kx+9=0--------> k² (1)³-6k(1)+9=0-----> k²-6k+9=0
using a graph tool------> to resolve the second order equation
the solution is
k=3
k=3
k²-6k+9=0---------> (k-3)²=0
the answer is
k=3
Answer:
Ok so if I did this right the answer will be 2ky^kx-8 / x -2
express 20.025m in centimeters
Answer:
20025
Step-by-step explanation:
the answer is
20.025 m
= 20.025×1000 cm
= 20025 cm
If the value of 34÷x is a whole number, which number is the value of x ?
Answer:
1 , 2 , 17 or 34
Step-by-step explanation:
34 can divide by these numbers and still be a whole number
hope this helps...
Which expression is equal to c2−4c+412c3+30c2÷c2−46c4+15c3?
Answer
A: c (c-2)/ 2 (c +2)
Step-by-step explanation:
Which is equal to c^2-4c+4/ 12c^3+ 30c^2 divided by c^2-4/ 6c^4 +15c^3?
A: c (c-2)/ 2 (c +2)
B: 2 (c-2)/ c(c+2)
C: 2 (c+2)/ c(c-2)
D: c(c+2)/ 2(c-2)
[c^2 - 4c + 4] / [12×(c^3) + 30×(c^2)] ÷ [c^2 - 4] / [6×(c^4) +15×(c^3)]
Expand the expression
= [c^2 - 2×2×c + 2^2] / [6×(c^2)×(2c + 5)] ÷ [c^2 - 2^2] / [3×(c^3)×(2c +5)]
Factorize the expression
= [(c-2)^2] / [6×(c^2)×(2c + 5)] ÷ [(c-2)(c+2)] / [3×(c^3)×(2c +5)]
Multiply by interchanging the numerator and denominator of the divisor
= [(c-2)^2] / [6×(c^2)(2c + 5)] × [3(c^3)(2c +5)] / [(c-2)(c+2)]
= [(c-2)×3(c^3)] / [6×(c^2)×(c+2)]
= [c×(c-2)] / [2×(c+2)]
= c(c - 2) / 2(c + 2)
[c^2 - 4c + 4] / [12×(c^3) + 30×(c^2)] ÷ [c^2 - 4] / [6×(c^4) +15×(c^3)] = c(c - 2) / 2(c + 2)
Answer:
A: [tex]\frac{c(c-2)}{2(c+2)}[/tex]
Step-by-step explanation:
[tex]\frac{c^{2} -4c+4}{12c^{3} + 30c^{2}}[/tex] ÷ [tex]\frac{c^{2} -4}{6c^{4} + 15c^{3}}[/tex]
expand.
= [c^2 - 2×2×c + 2^2] / [6×(c^2)×(2c + 5)] ÷ [c^2 - 2^2] / [3×(c^3)×(2c +5)]
factorize.
= [(c-2)^2] / [6×(c^2)×(2c + 5)] ÷ [(c-2)(c+2)] / [3×(c^3)×(2c +5)]
multiply by the reciprocal.
= [(c-2)^2] / [6×(c^2)(2c + 5)] × [3(c^3)(2c +5)] / [(c-2)(c+2)]
= [(c-2)×3(c^3)] / [6×(c^2)×(c+2)]
= [c×(c-2)] / [2×(c+2)]
= A: [tex]\frac{c(c-2)}{2(c+2)}[/tex]
Pip was thinking of a number. Pip doubles it, then adds 6 to get an answer of 13.8. What was
the original number?
Answer:
The original number is 3.9.
Step-by-step explanation:
With the information given, you can write an expression where the number multiplied for 2 plus 6 is equal to 13.8:
2x+6=13.8, where x is the original number
Now, you can solve for x to find the original number:
2x=13.8-6
x=7.8/2
x=3.9
According to this, the answer is that the original number is 3.9.
How much is 10% of 10 liters of milk
Answer:
1 liters
Step-by-step explanation:
Somebody please help me :(
Simplify: (-5a³-7a² +3)+(-9a³ +5a² +9)
Answer: =−14a3−2a2+12
Step-by-step explanation:
−5a3−7a2+3−9a3+5a2+9
=−5a3+−7a2+3+−9a3+5a2+9
Combine Like Terms:
=−5a3+−7a2+3+−9a3+5a2+9
=(−5a3+−9a3)+(−7a2+5a2)+(3+9)
=−14a3+−2a2+12
Answer:
=−14a3−2a2+12
The prime factorization of 28 is
Answer:
14 times 2 i think
Step-by-step explanation:
The difference of two complementary angles is 20. Find the measure of each angle
Answer:
35° , 55°
Step-by-step explanation:
Let one angle be x.
It's complementary angle is = (90 - x)°
According to the question ,
[tex]x - (90 - x) = 20[/tex]
[tex]=> x - 90 + x = 20[/tex]
[tex]=> 2x = 90 - 20 = 70[/tex]
[tex]=> x = \frac{70}{2} = 35[/tex]
4 11/18-x= 1 31/16 what is x
Answer: x=241/144
Step-by-step explanation:......
Answer:
x= 2.88194 or x= 2 127/144
Step-by-step explanation:
I put your question into a math calculator and got this for the answer. Good luck!
A ruler cost x pence a pen costs 10 pence more than the ruler write an expression in terms of x for the cost of the pen
Answer:
(A ruler) = X (a pen) = Y
y = x+10
Step-by-step explanation:
Answer:
A ruler cost x pence.
Let the cost of the ruler be x pencePen costs 10 pence more than the ruler
Therefore, the pen cost (x+10) pence(x+10) is the right answer.Which graph shows a proportional relationship between the number of hours of renting a snowboard and the total amount spent to rent the snowboard? (5 points) a A graph is shown. The values on the x axis are 0, 2, 4, 6, 8, and10. The values on the y axis are 0, 13, 26, 39, 52, and 65. Points are shown on ordered pairs 0, 0 and 2, 15 and 4, 20 and 6, 25 and 8, 30. These points are connected by a line. The label on the x axis is Number of Hours. The title on the y axis is Total Amount in dollars. b A graph is shown. The values on the x axis are 0, 2, 4, 6, 8, and 10. The values on the y axis are 0, 13, 26, 39, 52, and 65. Points are shown on ordered pairs 0, 0 and 2, 13 and 4, 26 and 6, 26 and 8, 50. These points are connected by a line. The label on the x axis is Number of Hours. The title on the y axis is Total Amount in dollars. c A graph is shown. The values on the x axis are 0, 2, 4, 6, 8, and 10. The values on the y axis are 0, 13, 26, 39, 52, and 65. Points are shown on ordered pairs 0, 0 and 2, 18 and 4, 20 and 6, 25 and 8, 35. These points are connected by a line. The label on the x axis is Number of Hours. The title on the y axis is Total Amount in dollars. d A graph is shown. The values on the x axis are 0, 2, 4, 6, 8, and 10. The values on the y axis are 0, 13, 26, 39, 52, and 65. Points are shown on ordered pairs 0, 0 and 2, 13 and 4, 26 and 6, 39 and 8, 52. These points are connected by a line. The label on the x axis is Number of Hours. The title on the y axis is Total Amount in dollars.
Answer:
The answer is d.
Step-by-step explanation:
I had this question on a test and saw the actual picture of each graph, the last graph is the only one that has a straight line from the origin to 52:8 which is the easiest way to know if a graph is proportional.
Hope this helps :)
Answer:
The answer is D.Step-by-step explanation:
I took de test :P
A linear function is expressed by a graph of a line that
crosses both axes at the origin. An equation is written in
siope-intercept form to express the same function as
shown in the graph From just this information what
statements can be made?
Choose the true statements
The slope of the equation must be positive.
The y-intercept of the equation is zero.
It is possible that the ine on the graph is horizontal
The slope of the equation must be negative
Answer:
The y-intercept of the equation is zero. It is possible that the line on the graph is horizontal.
Step-by-step explanation:
Answer:
The y-intercept of the equation is zero.
It is possible that the ine on the graph is horizontal
Step-by-step explanation:
The only thing we know for sure is that the function goes through the point (0,0). The line y = 0 passes through (0,0), so it is possible that the line on the graph is horizontal. Since x = 0 where y = 0, the y-intercept is also 0. However, we have no way of knowing for sure what the slope of the equation is.
Please help i been so stressed on this question please help i will give brainliest or like i
don't know just say it and the end of your answer -The two plots compare the top 25 home run hitters in 2007 with those in 2008. Which choice is NOT true?
Answer:
It is the top right one.
Step-by-step explanation:
What are the solutions to x2 + 8x + 7 = 0?
O x= -8 and x= -7
x= -7 and x= -1
оооо
x = 1 and x = 7
O x= 7 and x = 8
Answer:
x= -1 and x= -7
hope it helps.
The product of two whole numbers is 608 and their sum is 51 .what are the two numbers ?
Answer:
The product of 19 and 32 is 608 and their sum adds up to 51.
The two numbers are: 19 and 32
assume that y varies directly as x. If y= -15 when x=5, what is the constant of variation?
Answer:
k = -3
Step-by-step explanation:
Given
Variation: Direct
y = -15 when x = 5
Required
Find the constant of variation
A direct variation is represented as:
y = kx
Where
k = constant of variation
Substitute values for x and y
-15 = k * 5
Multiply both sides by ⅕
⅕ * -15 = k * ⅕ * 5
-3 = k * 1
-3 = k
k = -3
Hence, the constant of variation is -3
Diana buys 5 sodas every week. Which of the following expressions shows the total number of sodas she buys in y weeks? (4 points)
Group of answer choices
5y
Fraction y over 5
5 + y
5 + 5y
Answer:
Shalom Guys I will try my best to answer this! ok i think it would be #2 have a great day i hope i could help the squad says hi!
~Piper Rokelle
Step-by-step explanation:
What is the first step to solve the following system of equations using substitution?
Answer:
solve the first equation for y
Answer: A
Step-by-step explanation: first second last so its 3
Elizabeth has 6 red apples. She has 3 times as many red apples as green apples. How many green apples does Elizabeth have?
Answer:
2 green apples
Step-by-step explanation:
you need to find 3 times ___ = 6 so you do 6 divided by 3 and get 2!
the graph is _ throughout its domain and has _ at the x-axis because the value bx can get very close to 0 but never reach it
Answer:
Increasing and an asympote
Step-by-step explanation:
Answer:
Increasing and asympote
Step-by-step explanation:
i got right
will someone help with this
Answer:
When rotating a point 180 degrees counterclockwise about the origin
(1,0)→(-1,0)
Step-by-step explanation:
Explanation:-
When rotating a point 180 degrees counterclockwise about the origin
(x,y) →(-x,-y)
Given point ( x,y) = (1,0)
When rotating a point 180 degrees counterclockwise about the origin
(1,0)→ (-1,-0)
(1,0)→(-1,0)
a-[2b+{c-(2a+b}]
Solve this please
Answer:
3a - b - c
Step-by-step explanation:
a - 2b - (c-(2a+b))
a - 2b - c + (2a+b)
3a - b - c
Step-by-step explanation:
a-1[2b+{c-2a-b}]
or, a-1[2b+c-2a-b]
or, a-2b-c+2a+b
or, 3a-b+c
−17.1−(−714)+(−22) =?
Answer:
674.9
Step-by-step explanation:
-17.1-(-714)+(-22)
-17.1+714-22
696.9-22
674.9
Please help me with this
Answer:
Option 2 Andrew and Jason rode bikes to the park after Andrew finished his morning chores
27.) Find the sum of the length of line segments EF and CD
Answer:
5√10
Step-by-step explanation:
The distance between two points A([tex]x_1,y_1[/tex]) and B([tex]x_2,y_2[/tex]) on the coordinate plane is given by:
[tex]|AB|=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2 }[/tex]
From the image attached the coordinates of the points are E(-1, -1), F(8, -4), C(-7, -4) and D(-1, 2).
Hence the lengths of the line segment EF and CD are:
[tex]|EF|=\sqrt{(8-(-1))^2+(-4-(-1))^2} =\sqrt{90}=3\sqrt{10} \\\\CD=\sqrt{(-1-(-7))^2+(-2-(-4))^2}=\sqrt{40} =2\sqrt{10} \\\\Therefore:\\\\|EF|+|CD|=3\sqrt{10} +2\sqrt{10} =5\sqrt{10}[/tex]
What expression has the same value as 27+36
Answer:
its 3x9+13
Step-by-step explanation:
x
The expression 27+36 as be written as: 9(3+12)
What is expression?An expression is a set of terms combined using the operations +, – , x or for example 4 x − 3 or x 2 – x y + 17 .
An equation states that two expressions are equal in value,
for example 4 b − 2 = 6 .
We have: 27+36
Prime factorise both the numbers:
27=3*3*3
36= 2*2*3*3
So,
27+36
=3*3*3+2*2*3*3
= 3*(3*3+2*2*3)
=9(3+12)
Hence, The expression 27+36 as be written as: 9(3+12)
Learn more about expression here:
brainly.com/question/11742947
#SPJ2
Towns a and b are 10km apart. Uncle bill wants a new house at least 5km away from town b