Look at the sample work shown and determine the error, if any.
The multiplication property of equality was not performed correctly.
The addition property of equality was not used correctly.
There are no mistakes.
Answer:
There are no mistakes.
Step-by-step explanation:
5x-6 = 9
Add 6 to each side
5x-6+6 = 9+6
5x = 15
Divide each side by 5
5x/5 = 15/5
x = 3
If f(x) = 3x+1, then f(a+h) - f(a) =
1. 03 h
2. h
3. 3 h + 2
Functions, f and g are given by f(x)= 3+ cos x and g(x) = 2x, x is a real number. Determine the value of c for which f(g(x))= g(f(x)) where 0[tex]\leq[/tex]x<2[tex]\pi[/tex]
The value x is equal to [tex]\pi[/tex] for which f(g(x))=g(f(x))
Given :
f(x)=3+cos(x)
g(x)=2x
To find : the value of x over the given interval [tex]0\leq x\leq 2\pi[/tex]
Apply composition of functions. Replace g(x) inside f(x) to find f(g(x))
[tex]f(g(x))=f(2x)=3+cos(2x)\\g(f(x))=g(3+cosx)=2(3+cosx)\\[/tex]
Now we set f(g(x))=g(f(x)) and solve for x
[tex]3+cos(2x)=2(3+cosx)\\3+cos(2x)=6+2cos(x)\\\cos \left(2x\right)-2\cos \left(x\right)-3=0\\\\we \; know:\ cos(2x)=2cos^2(x)-1\\-4-2\cos \left(x\right)+2\cos ^2\left(x\right)=0\\2cos^2(x)-2cos(x)-4=0\\\\divide \; by \; 2 \; and \; Factor \; left \; hand \; side\\\\cos^2(x)-cos(x)-2=0\\\\(cosx-2)(cosx+1)=0\\\cos \left(x\right)=2,\:\cos \left(x\right)=-1[/tex]
cos(x)=2 cannot be solved , so no solution
[tex]cos(x)=-1\\cos is -1 at x=180 degree\\So , x=\pi[/tex]
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Please help with this question!
I need help with these ASAP, the assignment is due today and plz explain.
Answer:
Step-by-step explanation:
-8 <= x <= -1
Answer:
14234
Step-by-step explanation:
123124
The equation y=6x represents a proportional relationship. What is the constant of proportionality?
A. 0
B. 1/6
C. 6
D. x
Help me please i don’t know what to
Answer:
irrational because it's recurring
Answer:
irrational numbers
Step-by-step explanation:
because it's recurring
(06.05 LC)
The two-way table shows the number of students in a school who like music and/or dance.
Like Music
Do Not Like Music
Total
Like Dance
23
?
42
Do Not Like Dance
15
11
26
Total
38
30
68
What is the missing number in the table? (1 point)
19
31
53
65
Answer:
the user on top is correct
Step-by-step explanation:
Two boxes are shown below
What is the difference in the surface areas, in square feet, of the two boxes?
Answer:
Option (B):3
Step-by-step explanation:
S.A of Box J =57ft^2 ; using formula 2(lb+lh+hb)
S.A of BoxF=54Ft^2;using formula (6a^2)
Differenceof S.A of boxes:57-54=3
On the grid, draw a rotation of triangle ABC, a translation of triangle ABC, and a reflection of triangle ABC. Describe clearly how each was done.
Answer:
Step-by-step explanation:
helpp + can u add an explanation on how you got the answer? thanks!
Answer:
289
Step-by-step explanation:
f(x) = x^2+1
Let x= 4
f(4) = 4^2+1 = 16+1 = 17
f(4) ^2 =17^2 =289
Simplify the expression 2x(4 + x - 9 + 3x)
A. 8x - 10
B. -2x²
C. -10x²
D. 8x² - 10
E. 8x² - 10x
plz help, will mark brainliest! Please match the feature to the right statement.
Answer:
y intercept : if jada doesn't sell anything, she loses $250
Pos/neg interval: jada needs to sell more than 35 kilos in order to make a profit
Increase/decrease interval: the more paprika she sells, the more profit she makes
Step-by-step explanation:
y intercept is when she sells 0 kilos and is at -250 on the y axis
pos/neg interval is whether or not she is above or below 0 on the x axis (she has to be above it in order to make a profit)
The more the line is increasing, the larger profit she makes
i can ask my friend if he can help u he knows a lot about this stuff
Greg and his family went on a roadtrip.
Their car averaged 60 miles per hour and they
drove for 3.75 hours. How many total miles did
they drive?
Answer:50
Step-by-step explanation:
Evaluate the expression: 4p^2 / 9 - 4
Please show your work
What is the value of x in the equation -2/3x+9 = 3/4x-3?
Where do the slope and y-intercept show up in the tables and graphs?
Answer:
Solution: The general form of the line on a graph is y = mx+c,
where y is the coordinate of the point along the y-axis,
x is the coordinate of the point along the x-axis,
m is the slope of the line or arc tan of the angle the line makes with the x-axis, and
c is the intercept the line makes on the y-axis.
Suppose we want a line having a slope of 45º with the x-axis and passes through point P (4,6), the equation of the line is
y = mx + c
6 = tan 45 * 4 + c, or
6 = 4 + c, or
c = 6–4 = 2.
Help me pleaseeeeeee
Answer:
B
it's a recurring number therefore it's irrational
the diagonal of a square has a length of 10. what is the area of the square?
Answer:
50
Step-by-step explanation:
Diagonal of square = 10
Use special triangles to find the area because a square's diagonal divides the 90 degree angles into 45 degrees
45-45-90 triangle
x : x : x√2
1 : 1 : 10
10=x√2
10/√2=x, rationalize denominator and you get 5√2 as the square's side length
Area is s^2, s being the length of a side
(5√2)^2=25*2=50
simplify the expression where possible. (6^3)^-3
Answer:
[tex]( {6}^{3} ) {}^{ - 3} \\ = \frac{1}{( {6}^{3}) {}^{3} } \\ \\ = \frac{1}{ {6}^{9} } \\ \\ = {6}^{ - 9} [/tex]
Answer:
6^-9
Step-by-step explanation:
the answer is proved above
0.8777777777777777777777777777 written as a fraction is _____. 8/9 79/90 81/90
A pair of equations is shown below:
y = 2x − 1
y = 4x − 5
Part A: In your own words, explain how you can solve the pair of equations graphically. Write the slope and y-intercept for each equation that you will plot on the graph to solve the equations. (6 points)
Part B: What is the solution to the pair of equations? (4 points)
I need help! ASAP
( 6th grade tape charts! )
I will put brainlyness answer please help me I really need it ASAP
Please help me! I will give brainly!
Answer:
8
Step-by-step explanation:
You multiply the candies sold, by 8 to get the money raised.
10 times 8 is 80.
20 times 8 is 160
30 times 8 is 240
And so on.
I hope this helps!
pls ❤ and give brainliest pls
Divide money raised by candles sold:
80/10 = 8
160/20 = 8
Etc.
Each candle cost $8
You would multiply the number of candles sold by $8 to find the amount of money raised.
HELP MEEEEEEE PLSSSS
Simplify -4|-5| - [2(-17)]
1. 54
2. 14
3. -14
Add an explanation on how you got the answer
54 is the answer of -4(-5)-(2(-17))
Answer:
1 . 54
Step-by-step explanation:
What is the surface area of this rectangular pyramid?
I got 288 but that could be wrong. graduated a while ago. hope it helps though.
Place the LETTER in the smallest set that contains that value
Find the simple interest on \$5,000 at 4% interest for 3years.
