Answer:
Multiplicative identity is the property shown by this equation
Step-by-step explanation:
Multiplicative identity is explained as the product of any number and one is that number. Multiplicative identity is a property exhibited by most of the mathematical tools.
Zero and one are the numbers used to simplify equations whereas zero is called the additive identity. If we add any number with zero, it will result in the same in number.
Like that 1 is used in multiplicative identity. More simple example could be 5 ˣ 1 = 5 ., it is the multiplicative identity property
Find from first principles the derivative of cos x
Answer:
Please see the explanation.
Step-by-step explanation:
Let
[tex]f\left(x\right)=cosx[/tex]
By the first principle
[tex]f\:'\left(x\right)=\lim _{h\to 0}\left(\frac{f\left(x+h\right)-f\left(x\right)}{h}\right)[/tex]
[tex]=\lim _{h\to 0}\left(\frac{cos\:\left(x+h\right)-cos\:x}{h}\right)[/tex]
[tex]=\lim _{h\to 0}\left[\frac{cos\:x\:cos\:h-sin\:x\:sin\:h\:-\:cos\:x}{h}\right][/tex]
[tex]=\lim _{h\to 0}\left[\frac{-cos\:x\left(1-cos\:h\right)-sin\:x\:sin\:h\:}{h}\right][/tex]
[tex]=\lim _{h\to 0}\left[\frac{-cos\:x\left(1-cos\:h\right)\:}{h}-\frac{sin\:x\:sin\:h}{h}\right][/tex]
[tex]=-cosx\:\left(\lim \:_{h\to \:0\:}\frac{1-cos\:h}{h}\right)-sin\:x\:\lim \:\:_{h\to \:\:0}\:\left(\frac{sin\:h}{h}\right)[/tex]
[tex]=-cosx\:\left(0\right)-sinx\left(1\right)[/tex]
[tex]=-sin\:x[/tex]
Jane needs $150 for the hot air balloon ride. She already has $45 and she can earn the rest by working 12 hours at her job. If h represents her hourly earnings, which of the following equations can be solved to find
Jane's hourly earnings? Circle two correct equations.
150 = 12h
12 = 150 - h
150 = 45 + 12h
150 + 45 = 12h
150 = 12h + 45
Answer:
C and E
Step-by-step explanation:
C and E are the only ones that are the same and represent the excerpt
Hope this help s plz mark brainliest if correct :D
Answer:
the last answer and the 3rd one
Step-by-step explanation:
Can i get a little help with this?
Answer:
c
Step-by-step explanation:
hope this helps
:)
Answer:
C
Step-by-step explanation:
A cylinder has a diameter of 10 units. Its radius ___ is units. If its height is twice its radius, its height is____ units. Its volume is about ___cubic units
Translate the word phrase into a math expression.
12 meters longer than his throw.
t−12
t ÷ 12
t + 12
12 × t
answer right and get brainliest
Answer:
t+12
Step-by-step explanation:
brainliest por favor ❤❤
Answer:
t+12
Step-by-step explanation:
12 meters longer means that you're adding meters onto the throw. Hope that helps :)
Find the slope of the line in the simplest form.
A. m= 5/1
B. m= -1/5
C. m= -0.2
D. m= -5/1
Can someone help me out
Which expression is equivalent to the question?
Answer:the third one I suppose
Step-by-step explanation:
what’s is the answer to (-20)-7= I’m confused
Answer:
140
Step-by-step explanation:
You just multiply them together! :)
Answer:
-27
Step-by-step explanation:
I need help! Thank you :)
Answer:
parallel
Step-by-step explanation:
Answer:
Parallel
Step-by-step explanation:
If you graph these on a graph the beginning part is the same however the second part (the 2 and 30) are different which would just show how far to space the lines because those are the y-intercept and the fraction part is the slope
If you subtract 18 from my number and multiply the difference by -2, the result is -20. What is Saras number
Answer:
28!
Step-by-step explanation:
28 - 18 = 10,
10 x -2 = -20
Find the area of the shaded region. Round your answer to the nearest tenth. Help!! Please!!
Answer:
Area in blue = 17.38m²
Step-by-step explanation:
How do I do this?
Help:)
Answer:
Step-by-step explanation:
To graph that you would start at 4 because that's your y-intercept then you would move down by 1 because z is considered 1 and the negative is only applied to the rise and the run is 3 so from point 3 you would move to the right 3 times and that would be your second point.
At time t=0 hours, a tank contains 3000 litres of water. Water leaks from the tank. At the end of every hour there is x% less water in the tank than at the start of the hour. The volume of water, in litres, in the tank at time t hours is Vt. Given that Vt=KtV0 V2=2881.2 work out the value of k and the value of x.
Answer:
x = 2; K = 0.98
Step-by-step explanation:
At time, t = 0, Volume of Water = 3,000 litres
After t hours , the Volume of water in the tank = Vt
At the end of every hour there is a x% less water in the tank then at the start of the hour
After 1 hour, volume of water left Vt = V1
V1 = 3,000 - 3000 × (x/100)
V1 = 3,000 - 30x
After 2 hours, Volume of water left is V2
V2 = (3,000 - 30 x) - (3,000 - 30 x) × (x/100)
V2 = (3,000 - 30 x) - (3000x - 30x²)/100
V2 = {100(3000 - 30x) - x(3000 - 30x)} /100
V2 = {(3000 - 30x)(100 - x)}/100
Recall, V2 = 2881.2
Therefore
{(3000 - 30x)(100 - x)}/100 = 2881.2
(3000 - 30x)(100 - x) = 288120
300000 - 3000 x - 3000 x + 30 x² = 288120
30 x ² - 6000 x + 11880 = 0
Dividing both sides by 30
x² - 200 x + 396=0
Factorizing:
(x -198)(x-2) = 0
x = 198 or x = 2
Since the percentage by which the water reduces cannot be greater than 100, x = 2 is chosen.
Step 2: Solving for k
Given that Vt=KtV0
K = Vt/V0
At t = 1
V1 = 3000 - 30x
V1 = 3000 - 30 × 2
V1 = 3000 - 60
V1 = 2940
K = 2940/3000
K = 0.98
Which type of work is an electrical engineer most likely to do?
Answer:
wiring probably.
Step-by-step explanation:
what is the answer to this
3a+2b-a-3b
Answer:
Step-by-step explanation:2a-b
Answer:
2a-b
Step-by-step explanation:
We can start by grouping our A's and B's, while making sure to keep their individual signs.
For our A's, we get 3a-a and for our B's, we get 2b-3b.
When we simplify our A's, we get 2a and when we simplify our B's, we get -b.
After grouping them back together, you end up with 2a-b.
( 10 points ) What is the value of the expression 5/6 + 2/3
A. 27/18
B. 9/6
C. 7/9
D. 21/27
E. 3/2
Answer:
E. 3/2
Step-by-step explanation:
5/6 + 2/3 = 3/2
Can someone help and explain how you got the answer? Thanks^^
Answer:
C) (0,5)
Step-by-step explanation:
f(x) is y and x is x
The table is providing you with points
y-y over x-x gives you a slope of -5
Use the points and turn it into a point-slope equation and convert to y-intercept equation
y-15=-5(x+2)
y-15=-5x-10
y=-5x+5
So the y-intercept is 5 or (0,5)
Suppose 2,400 spectators attend at leas one game this soccer season. Use ther survey data to estimate the number of spectators who attended 5 or more games this season
Answer:
800 spectators
Step-by-step explanation:
Using the survey provided above, we can see that the survey population is a total of 150 spectators by adding up all of the spectators. Since only 50 spectators attended 5 or more games then that means that the percentage of the survey population that attended 5 or more games is ...
50 / 150 = 0.3333 or 33.33%
Therefore, if we are supposing that 2,400 spectators attended at least one game this season then we can multiply this population by the percentage of people who tend to attend 5 or more games in order to actually calculate the total number of people who will attend 5 or more games this season.
2,400 * 0.3333 = 800 spectators
2x+y<-6
graph the inequality on the axes below.
Answer:
1 point on (0,-6) and the other on (-3,0)
the left side of the graph should be shaded if you need to
Step-by-step explanation:
Simplify
(-1+4i)(9-4i)
Answer:
B 7+40iStep-by-step explanation:
Help pls!
13x - 14 = - 118
- 13x =
13x - 14 = -118
13x = -104
x = -8
(-3/4)(-1 3/4)
evaluate
Answer:
5 1/4
Step-by-step explanation:
which pair of lines is the graph...
sue has 18 sweets, tony also has 18 sweets, sue gives tony x sweets, sue eats 5 of her sweets, tony then eats half of his sweets. write an expression for the number of sweets sue and tony now have
Answer:
s(18 - x)-5 t(18x/2) is initial
they now have;
t( 9x) s(13-x)
Step-by-step explanation:
Solve the equation for the given variable.
A-(r+k/4 )
f for r
Answer:
This is a really complicated variable for me. I am very good at math though.
Step-by-step explanation:
Solve the system of equations from Problem #4.
A:(4, -1)
B:(-1, -3)
C:(16, 4)
D:(9, 1)
Answer:
A. (4,-1)
Step-by-step explanation:
solving by addition/elimination
2x-5y=13 *(2)
4x-10y=26
-8x+10y=-42
_________
-4x= -16
x= 4
2(4)-5y = 13
8-5y=13
-5y=5
y= -1
Question 8 of 10
What is the solution to the inequality?
15 < 4 + x
Answer:
11<x
x>11
first u subtract 4 on both sides
which leaves u with 11 on the left and x on the right
I think It's 11 I'm not sure
please help :(
What is the equation of the line that passes through the point (2,-6) and has a slope of -1?
Answer:
y = -x - 4
Step-by-step explanation:
Plug in the point and slope into the equation y = mx + b, and solve for b:
y = mx + b
-6 = -1(2) + b
-6 = -2 + b
-4 = b
Then, plug in b and the slope into y = mx + b
y = -1x - 4
y = -x - 4 is the equation of the line
find the measure of angle in the circle
Answer:
x = 5 which mean that if you replace 5 with the x you will get 90 as your answer.
Step-by-step explanation:
Answer:
x=5
Step-by-step explanation:
∠17x+5≅∠18x
17x-18x=-5
-x=-5
x=5
17x5+5=90°
18x=90°