Answer:
3V2
Step-by-step explanation:
V18
V9 times 2 equals 18
V3 to the second power because 3 times 3=9 so we get 3V2
Graph the solution for the following linear inequality system. Click on the graph until the final result is displayed.
y < 8
y ≥ 3
Answer:
The graph in the attached figure
Step-by-step explanation:
we have
[tex]y< 8[/tex]
The solution is the interval -----> (-∞,8)
[tex]y\geq3[/tex]
The solution is the interval -----> [3,∞)
The solution of the system is equal to
[3,∞)∩ (-∞,8)-------> [3,8)
All real numbers greater than or equal to 3 and less than 8
The graph in the attached figure
if f(x)= -8x+4, then f^-1(x)=
Answer:
[tex]f^{-1}[/tex](x) = [tex]\frac{4-x}{8}[/tex]
Step-by-step explanation:
let y = f(x) and rearrange making x the subject
y = - 8x + 4 ( add 8x to both sides )
8x + y = 4 ( subtract y from both sides )
8x = 4 - y ( divide both sides by 8 )
x = [tex]\frac{4-y}{8}[/tex]
Change y back into terms of x
[tex]f^{-1}[/tex](x) = [tex]\frac{4-x}{8}[/tex]
What is the value of x in the drawings if we know the triangles are similar?
A. 12 ft.
B. 30 ft.
C. 36 ft.
D. 18 ft.
Answer:
Step-by-step explanation:
setup a proportion
Big Triangle Small Triangle
corresponding 15 3
corresponding x 6
so you are trying to solve 15/x=3/6
cross multiply 6(15)=3(x)
last step divide both sides by 3 giving x=30 ft
If the triangles are similar, value of x in the drawings is Option(B) 30 ft.
What are similar triangles ?Similar triangles are triangles that have the same shape, but their sizes may vary. If two triangles are similar, then their corresponding angles are congruent and corresponding sides are in equal proportion.
How to calculate the value of x from similar triangle concept ?The given two triangles are similar .
In the diagram, it is mentioned that one side is 3 and its corresponding other side of the similar triangle is 15 .
Thus the proportion is 15/3 = 5
Therefore if the other side of the same triangle is 6 then its corresponding other side of the similar triangle will be 6*5 = 30
Thus x = 30 ft.
Therefore, if the triangles are similar, value of x in the drawings is Option(B) 30 ft.
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a restaurant offers a lunch special in which a customer can select from one of the 7 appetizers, one of the 10 entrees, and one of the 6 desserts. How many different lunch specials are possible?
Answer:
420
Step-by-step explanation:
Each of the 7 appetizers can be paired with one of 10 entrees, and each entree can be paired with one of 6 desserts. So the number of combinations is:
7 × 10 × 6 = 420
By combination property, there are a total of 420 different lunch specials that are possible.
What is combination property ?The combination property is defined as the selection of items from a set that has distinct members, such that the order of selection does not matter.
How to calculate the different lunch specials that are possible from the property ?It is given that a restaurant offers a lunch special in which a customer can select from one of the 7 appetizers, one of the 10 entrees, and one of the 6 desserts.
Thus, there are 3 different items which quantities are also mentioned. '
Thus by combination property, the total number of lunch specials that are possible -
7 * 10 * 6 = 420 .
Therefore, by combination property, there are a total of 420 different lunch specials that are possible.
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What is the approximate value of K? Use the law of sines to find the answer.
A.) 2.9 units
B.) 3.8 units
C.) 5.1 units
D.) 6.2 units
Answer:
C.) 5.1
Step-by-step explanation:
First, solve for J's angle of degrees
180 - (120 + 40) = 20
Second, fill in all the information that you know in the equation
sin(20) / 2 and sin(120) / k
Third, cross multiply
k x sin(20) = 2 x sin(120)
Fourth, solve for k
k x sin(20) / sin(20) = [2 x sin(120)] / sin(20)
k = [2 x sin(120)] / sin(20)
k = 5.0641777.....
Fifth, round to the nearest tenth
k = 5.1
Answer:
its 5.1 on edg
Step-by-step explanation:
need help with the correct answer
Answer:
B. 9/4 <x <= 4
Step-by-step explanation:
5x - 19 <= 1
5x <= 20
x <= 4
-4x + 3 < - 6
-4x < - 9
x > 9/4
Answer
9/4 <x <= 4
Answer:
x ≤ 4
Step-by-step explanation:
1. 5x - 19 ≤ 1
Add: 5x ≤ 20
Divide: x ≤ 4
2. -4x + 3 > -6
Subtract: -4x > -9
Divide: x < ⁹/₄
3. Or means the union of the two sets, or all values that are in either set.
x ≤ 4 ∪ x < ⁹/₄ is x ≤ 4, since they both inequality signs point left, and 4 is larger than ⁹/₄, so x ≤ 4 also includes x < ⁹/₄.
I see here that x ≤ 4 is not one of the options. I'm not sure what to do then.
Find the slope of the line through (3, 7) and (–1, 4)
Question 6 options:
a)
34
b)
211
c)
112
d)
43
Slope formula = y2-y1/x2-x1
Plug in.
4 - 7/-1 - 3 = -3/-4 = 3/4
Answer: 3/4 or Choice A
Trapezoid CDEF was reflected across the x-axis followed by a 90° rotation about the origin to create the other trapezoid shown on the graph. Which congruency statement applies to the trapezoids? CDEF ≅ NPOM CDEF ≅ MNPO CDEF ≅ NMOP CDEF ≅ MOPN
answer is c on edg
Answer:
Yep the answer is C bro. I very much appreciate your help :D
congruency statement applies to the trapezoids is CDEF ≅ NMOP.
What is congruence?Two geometric figures are said to be congruent, or to be in the relation of congruence, if it is possible to superpose one of them on the other so that they coincide throughout.
Trapezoid CDEF was reflected across the x-axis followed by a 90° rotation about the origin to create the other trapezoid
From question, we have
Points C and NPoints D and MPoints E and OPoints F and PHence, Trapezoid CDEF and trapezoid NMOP are congruent.
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What is a point-slope equation of the line with the slope -13 that goes through the point (5,7)?
Answer:
Equation of line: y=3x-18
Step-by-step explanation:
Point: (5,7) and slope=-13
y-7=-13(x-5)
y=-13x+72
A line has a slope of –3/2 and has a y-intercept of 3. What is the x-intercept of the line?
Answer:
x = 2 → (2, 0)Step-by-step explanation:
The slope-intercept form of an equation of a line:
y = mx + b
m - slope
b - y-intercept (0, b)
We have the slope m = -3/2 and the y-intercept b = 3.
Substitute:
y = -3/2x + 3
The x-intercept is for y = 0. Substitute:
0 = -3/2x + 3 add 3/2x to both sides
3/2x = 3 multiply both sides by 2
3x = 6 divide both sides by 3
x = 2
Which will form a composite function?
Answer:
B.
Step-by-step explanation:
Let's find g(f(x)) for each choice for fun and so you can have more examples:
A) f(x)=3x and g(x)=sqrt(x)+1
so g(f(x))=g(3x)=sqrt(3x)+1
So definitely not this choice
B) f(x)=x+1 and g(x)=sqrt(3x)
so g(f(x))=g(x+1)=sqrt(3(x+1))
So this one works! :)
C) f(x)=sqrt(x)+1 and g(x)=3x
so g(f(x))=g(sqrt(x)+1)=3(sqrt(x)+1)
Not this one!
D) f(x)=sqrt(3x) and g(x)=1
g(f(x))=g(sqrt(3x))=1
Jamarcus has twenty-one coins is his piggy bank, all of which are either dimes or quarters. If Jamarcus has $4.20 in total, how many of each coin does he have?
Answer:
16 quarters 2 dimes
Step-by-step explanation:
16 quarters is 4 dollars
2 dimes is 20 cents
Step-by-step explanation:
If D is number of dimes and Q is number of quarters:
D + Q = 21
10D + 25Q = 420
Solve the system of equations through either substitution or elimination.
10D + 25(21 - D) = 420
10D + 525 - 25D = 420
105 = 15D
D = 7
Q = 14
There are 7 dimes and 14 quarters.
Rewrite using the distributive property 6(x + 3)
Answer: 6x+18
Step-by-step explanation: Because of the Distributive property, you would multiply the 6 by the’x’ and 3, as they are in the parenthesis.
The distributive property is the ability of one operation to "distribute" over another operation contained inside a set of parenthesis. So, all we (you) need to do is "distribute" the 6 to the x and 3. Observe.
6(x + 3) =
6x + 18 is the rewritten equation using the distributive property.
A. 90 degrees
B. 45 degrees
C. 30 degrees
D. 120 degrees
For this case we have by definition, that each of the four internal angles of a square measure 90 degrees.
If we draw the diagonals of the square then the angles are divided by two, that is:
[tex]\frac {90} {2} = 45[/tex]
Thus, angle 3 measures 45 degrees.
[tex]A3 = 45[/tex]
By definition, the sum of the internal angles of a triangle is 180 degrees.
So:
[tex]A2 + A3 + 90 = 180\\A2 = 180-90-A3\\A2 = 180-90-45\\A2 = 45[/tex]
Thus, angle 2 measures 45 degrees.
Answer:
45 degrees
Do Xuan nam isgoing to invest $1000 at a simple interest rate of 4% how long will it take for the investment to be worth $1040?
[tex]\bf ~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\dotfill&\$1040\\ P=\textit{original amount deposited}\dotfill & \$1000\\ r=rate\to 4\%\to \frac{4}{100}\dotfill &0.04\\ t=years \end{cases} \\\\\\ 1040=1000(1+0.04t)\implies \cfrac{1040}{1000}=1+0.04t\implies \cfrac{26}{25}=1+0.04t \\\\\\ \cfrac{26}{25}-1=0.04t\implies \cfrac{~~\frac{26}{25}-1~~}{0.04}=t\implies \cfrac{~~\frac{1}{25}~~}{0.04}=t\implies 1=t[/tex]
Sec(pi/2)=csc x-true or false
False.
[tex]\sec{\dfrac{\pi}{2}}=undefined[/tex]
Hope this helps.
r3t40
Answer:
TRUE APEX dont trust the other guy!!!
Step-by-step explanation:
Which parent function is represented by the table?
Answer:
Step-by-step explanation:
Notice that for each unit increase in x, y increases by 1 unit. Thus, the parent function is y = x.
Answer:
f(x)=x
Step-by-step explanation:
We are given with a table, Lets look at the value of x and y
The value of y is constantly increasing and the value of x is also increasing constantly. So it is a table for a linear equation.
the value of x and y are same, so the equation of the line is
y=x
when x=-2 the value of y=-2
when x=1 the value of y=1
Hence , the parent function is [tex]f(x)=x[/tex]
ABC is a right triangle.If AC=12 and BC=13,find AB
The answer for AB is 5.
To find this answer, you would use Pythagorean Theorem. The equation would be a² + 12² = 13². First, square 12 and 13, to get the equation to say a² + 144 = 169. Next, subtract 144 from both sides. This leaves a² = 25. Finally, square root both sides to a = 5. Thus meaning 5 is the answer.
Here is an image to show how this answer is found. I hope this helps!
plzzzzz answer guys!!!
Answer:
Sorry if its wrong i hope it helps!
what is the factor of 144-49x"2
Because this expression is a difference of squares, meaning both terms have square roots, the factors would be 12+7x and 12-7x
Answer:12+7x and 12-7x
Use the elimination method to solve the system of equations. Choose the
correct ordered pair.
12x - y = 25
9x + y =17
Answer:
the ordered pair is (2,-1)
Step-by-step explanation:
We need to solve the system of equations using elimination method
12x - y = 25 eq(1)
9x + y = 17 eq(2)
Adding eq(1) and eq(2)
12x - y = 25
9x + y = 17
___________
21x = 42
x = 42/21
x= 2
Now, putting value of x in equation 1
12x - y = 25
12(2) -y = 25
24 -y = 25
Adding -24 on both sides
24 -y-24 = 25-24
-y = 25-24
-y = 1
Multiply both sides by -1
y = -1
the value of x = 2 and y = -1
So, the ordered pair is (2,-1)
Answer:
The solution is: (2, -1)
Step-by-step explanation:
I have the following system of equations
[tex]12x - y = 25[/tex]
[tex]9x + y =17[/tex]
Note that if we add both equations, the variable y is "eliminated".
So add the first equation to the second and solve for the variable x
[tex]12x - y = 25[/tex]
[tex]9x + y =17[/tex]
----------------------------------
[tex]21x=42[/tex]
[tex]x=\frac{42}{21}\\\\x=2[/tex]
Now substitute the value of x in any of the two equations and solve for the variable y
[tex]9(2) + y =17[/tex]
[tex]18 + y =17[/tex]
[tex]y =17-18[/tex]
[tex]y =-1[/tex]
The solution is: (2, -1)
Simplify (3x – 5) - (4x + 6).
Answer: -1x-11
Step-by-step explanation:
The length and width of a rectangle are consecutive even integers the area of the rectangle is 120 squares units what are the length and width of the rectangle
Answer:
Length =12
Width= 10
Step-by-step explanation:
The difference between two consecutive integers is 2.
Thus the difference between the length and the width of the rectangle also differ by 2.
width- x
length- x+2
AREA=L×W
120=x(x+2)
x²+2x-120=0
Factorizing:
x² - 10x + 12x - 120=0
x(x-10) + 12( x-10)=0
(x-10)(x+12)=0
either x-10=0 or x+12=0
x=10 0r -12
We consider positive roots only. thus x=10
width = 10
length = 10+2 =12
Write out the equation of the line parallel to the line y=3x-11 which goes through the point (0,8)
Answer: y=3x+8
Step-by-step explanation:
The slope will be the same as the original equation, so 3. And to make the line go the points (0,8), you can plug in 0 into the original equation to find what needs to change. Hope this helps!
Remember that the slope intercept formula is:
y = mx + b
m is the slope
b is the y-intercept
If lines are parallel then they have the same slope (m)
This means that the slope of the line will be 3
y = 3x + b
Now we must find b
To do that you must plug in the point the line goes through in the x and y of the equation.
(0, 8)
8 = 3(0) + b
8 = 0 + b
8 = b
y = 3x + 8
Hope this helped!
~Just a girl in love with Shawn Mendes
Given that ƒ(x) = x² + 5x, evaluate ƒ(-2).
-6
-14
7
f(-2) means replace x in the equation with -2, then solve:
-2^2 +5(-2)
Simplify:
4 + -10
Add:
-6
The angle of elevation from a buoy in the water to the top of a lighthouse is 68degrees. If a buoy is 300 ft from the base of the lighthouse, from the height of the lighthouse.
Answer:
The height of the lighthouse is [tex]742.5\ ft[/tex]
Step-by-step explanation:
Let
h -----> the height of the lighthouse
we know that
The tangent of angle of 68 degrees is equal to divide the height of the lighthouse by the horizontal distance from the buoy to the base of lighthouse
so
[tex]tan(68\°)=\frac{h}{300}[/tex]
Solve for h
[tex]h=(300)tan(68\°)=742.5\ ft[/tex]
Find the volume of a cone with a diameter of 12 m and a height of 7 m
Answer:
263.99 m3 (i tried my best)
Step-by-step explanation:
diameter > radius= 12/2
=6 m
v. of cone: 1/3 x 22/7 x r² x h
1/3 x 22/7 x 6² x 7
=263.99 m3
Answer:84piem^3
Step-by-step explanation:AP3X
how long is the arc intersected by a central angle of π/3 radians in a circle with a radius of 6 feet round your answer to the nearest tenth
[tex]\bf \textit{arc's length}\\\\ s=r\theta ~~ \begin{cases} r=radius\\ \theta =angle~in\\ \qquad radians\\ \cline{1-1} r=6\\ \theta =\frac{\pi }{3} \end{cases}\implies s=6\left( \frac{\pi }{3} \right)\implies s=2\pi \implies \stackrel{\textit{rounded up}}{s=6.3}[/tex]
Answer: [tex]arc\ length=6.3\ ft[/tex]
Step-by-step explanation:
You need to use the following formula for calculate the arc lenght:
[tex]arc\ length=r\theta[/tex]
Where "r" is the radius and [tex]\theta[/tex] is the central angle in radians.
You know that the central angle in radians s:
[tex]\theta=\frac{\pi }{3}[/tex]
And the radius is:
[tex]r=6\ ft[/tex]
Therefore, the final step is to substitute the values into the formula. Then you get:
[tex]arc\ length=(6\ ft)(\frac{\pi }{3})[/tex]
[tex]arc\ length=6.3\ ft[/tex]
what is the value of 15i/2i
Answer:
-15/2
Step-by-step explanation:
What is the value of the digit 1 in the number 13?
Answer:
the value of the digit 1 in the no. 13 is 10
Step-by-step explanation:
cuz it's in the tens place
1 3tens ones
hope u understood
and helps u
and ur welcm
:D
The value of digit 1 in the number 13 is 10 because it is located in the 'tens' place.
Explanation:The value of the digit 1 in the number 13 corresponds to its place value in the number. In the number 13, 1 is in the 'tens' place, thus its value is 10. Place value is determined by the position of a digit in a number. It shows the mathematical worth of each digit at their respective places. Zeroes play a significant role in deciding the place value of digits in a number, acting as placeholders that help identify decimal points.
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