Inequalities help us to compare two unequal expressions. (-6, 3) is not the solution to the system of inequalities.
What are inequalities?Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed. It is mostly denoted by the symbol <, >, ≤, and ≥.
The graph of y ≥ −3x + 3 will be a solid line with the equation y=−3x + 3, this solid line signifies that the value on this line is also included in the solution. Since the symbol is '≥' therefore the area above the line will have the solutions.
The graph of y<(3/2)x -6 will be a dashed line with the equation y=(3/2)x - 6, this dashed line signifies that there is no solution on the line. since the inequality symbol is '<' therefore, the area under the dashed line will have all the solutions.
The area where both shaded areas meet is the area that will have all the possible solutions.
PartB:
y ≥ −3x + 3
3 ≥ -3(-6) + 3
3 ≥ 18 + 3
Since the above inequality is not satisfied, (-6, 3) is not the solution to the system of inequalities.
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what is the standard deviation from the mean
roundest to the nearest tenth
The standard deviation from the mean of the data with a variance of 36 is: B. 6.
Standard deviation can be described as the average of the distance each of the value lies from the mean of the data.
The standard deviation is the square root of the variance.
Variance of the data is given already as 36.
Standard deviation = √36 = 6.
The answer is B. 6.
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A box contains 50 batteries, of which 10 are dead and 5 are weak. Suppose you select batteries at random from the box and set them aside for recycling if they are dead or weak. If the first battery you select is dead and the second one is weak, what is the probability that the next battery you select will be weak?
Solve y = x + 8 for x.
Ox=y+8
Ox=y-8
Ox=-y + 8
Ox=-y-8
Answer:
x= -y+8
Step-by-step explanation:
hope it's helpful
when the positive integer x is divided by 5, the remainder is 3. what is the remainder when X +19 is divided by five
Answer:
_4
Step-by-step explanation:
x+19/5=3 cross multiply
x+19=3*5
x+19=15
x=15-19
x=-4
The remainder when (x + 19) is divided by 5 is 2.
If the positive integer x has a remainder of 3 when divided by 5, it can be represented as:
x = 5a + 3, where "a" is a non-negative integer.
Now, let's consider the expression (x + 19) and determine the remainder when it is divided by 5:
x + 19 = (5a + 3) + 19
= 5a + 22
When we divide 5a + 22 by 5, we find:
(5a + 22) = 5(a + 4) + 2
Therefore, the remainder when (x + 19) is divided by 5 is 2.
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Point D is the midpoint of AB and point E is the midpoint of BC. Select all of the statements to the right that must be true.
Answer + Step-by-step explanation:
» ABC ≅ DBE
» DE // AC
(properties of the mid-segment of a triangle)
» Length of DE = 1/2 length of AC
(properties of the mid-segment of a triangle)
» ∠BDE = ∠DAC
(Corresponding angles)
For his phone service, Chris pays a monthly fee of $25, and he pays an additional $0.06 per minute of use. The least he has been charged in a month is $86.74.
What are the possible numbers of minutes he has used his phone in a month?
Use M for the number of minutes, and solve your inequality for M.
Answer:
1029 minutes or 17.15 hours
Step-by-step explanation:
25+0.06M=86.74
0.06M=61.74
M=61.74/0.06=1029
can someone help me here
NONSENSE=REPORT
[tex] \huge \qquad \sf \: Answer[/tex]
Here we go ~
1. A circle can be named by their Centre, so here in the diagram it's :
Circle A2. Name 4 radii :
Radii are the line segments that joins the centre and boundary of circle.
They are :
FAGABACA3. 2 Major arcs :
considering two points on a circle, and joining them forms a curve ( you can say part of circumference )
When we consider two points two arcs are formed and the arc with more length is known as Major Arc
That is :
Major arc ECFMajor arc BEC4. A Semicircle :
Semicircle is special arc which is formed when two arcs formed by the points are equals to one another... it's also half the Perimeter of circle.
that is :
Arc CF is a Semicircle5. 3 minor arcs :
The arc formed by two points having lesser length is known as minor arc.
that is :
Arc EFArc BGArc FG6. 3 Central angles :
Central angles are angles formed by arcs on centre of the circle ~
that is :
Angle FABAngle BAC Angle GAB7. A diameter :
Diameter is a chord that passes through centre of the circle.
CF8. Congruent Angles :
In the given figure, there are two equal/congruent angles that are ~
Angle BAG and Angle GAF9. Adjacent arcs :
The arcs that have one common end point are known as Adjacent arcs ~
that are :
Arc FG and Arc GBAnswer:
A circle is named by its center. The center of the given circle is A, therefore:
Name of the circle: A
The radius is any line segment from the center of the circle to the perimeter.
Name 4 radii: [tex]\sf AC, \quad AB, \quad AG, \quad A\,F[/tex]
A major arc is an arc whose measure is greater than 180°.
When naming a major arc, the first point and last point are the endpoints, and we also need include the name of any point between those two endpoints.
2 major arcs: [tex]\sf \widehat{CEG},\quad \widehat{BCF}[/tex]
A semi-circle is half a circle with an arc that measures 180°.
Its endpoints lie on the diameter of the circle. We need three points to name a semicircle (the endpoints and a point between the endpoints).
A semi-circle: CEF
A minor arc is an arc whose measure is less than 180°.
3 minor arcs: [tex]\sf \widehat{FG}, \quad \widehat{GB}, \quad \widehat{BC}[/tex]
A central angle has its vertex at the center of the circle, and is formed by 2 radii. When naming the central angle, the middle letter is the center of the circle.
3 central angles: [tex]\sf \angle F\,AG, \quad \angle GAB, \quad \angle BAC[/tex]
The diameter is the widest part of the circle. It is a straight line segment that passes through the center of the circle.
A diameter: CF
Congruent angles are angles with the same measure.
On the diagram, the same angle measures are indicated by the addition of the same number of dashes on the angle sign.
Congruent angles: [tex]\sf \angle F\,AG, \quad \angle GAB[/tex]
Adjacent arcs are arcs that have one point in common.
Adjacent arcs: [tex]\sf \widehat{GB}[/tex] and [tex]\sf \widehat{BC}[/tex] (they share point B)
proving trigonometric identities
2(cosx sinx-sinx cos2x)/sin2x =secx
This is not an identity.
[tex]\dfrac{2(\cos(x)\sin(x) - \sin(x)\cos(2x))}{\sin(2x)} \neq \sec(x)[/tex]
Check x = π/4, for which we have cos(π/4) = sin(π/4) = 1/√2. Together with sin(2•π/4) = sin(π/2) = 1 and cos(2•π/4) = cos(π/2) = 0, the left side becomes 1, while sec(π/4) = 1/cos(π/4) = √2.
Keeping the left side unchanged, the correct identity would be
[tex]\dfrac{2(\cos(x)\sin(x) - \sin(x)\cos(2x))}{\sin(2x)} = -2\cos(x) + 1 + \sec(x)[/tex]
To show this, recall
• sin(2x) = 2 sin(x) cos(x)
• cos(2x) = cos²(x) - sin²(x)
• cos²(x) + sin²(x) = 1
Then we have
[tex]\dfrac{2(\cos(x)\sin(x) - \sin(x)\cos(2x))}{\sin(2x)} = \dfrac{2\cos(x)\sin(x) - 2\sin(x)\cos(2x)}{\sin(2x)} \\\\ = \dfrac{\sin(2x) - 2\sin(x)\cos(2x)}{\sin(2x)} \\\\ = 1 - \dfrac{2\sin(x)\cos(2x)}{\sin(2x)} \\\\ = 1 - \dfrac{2\sin(x)(\cos^2(x) - \sin^2(x))}{2 \sin(x)\cos(x)} \\\\ = 1 - \dfrac{\cos^2(x) - \sin^2(x)}{\cos(x)} \\\\ = 1 - \cos(x) + \dfrac{\sin^2(x)}{\cos(x)} \\\\ = 1 - \cos(x) + \dfrac{1 - \cos^2(x)}{\cos(x)} \\\\ = 1 - \cos(x) + \sec(x) - \cos(x) \\\\ = -2\cos(x) + 1 + \sec(x)[/tex]
i forgot how to do some maths so i need help: solve 2x + 3 = -1
Hi student, let me help you out! :)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
We are asked to solve the equation [tex]\pmb{2x+3=-1}[/tex].
[tex]\triangle~\fbox{\bf{KEY:}}[/tex]
The goal is to isolate x.First, subtract 3 from both sides of the equal sign:
[tex]\mathrm{2x=-1-3}[/tex]
[tex]\mathrm{2x=-4}[/tex]
Now, divide both sides by 2:
[tex]\mathrm{x=-2}[/tex]
Hope it helps you out! :D
Ask in comments if any queries arise.
#StudyWithBrainly
~Just a smiley person helping fellow students :)
i need help on this may you help
Answer:
should be 63
Step-by-step explanation:
What is the smallest number of marbles that could be divided up either into bags of $18$ marbles or into bags of $42$ marbles, with no marbles left over in each case
The number that could be divided up either into bags of 18 marbles or into bags of 42 marbles is 126.
How to find that number?
The number that could be divided up either into bags of 18 marbles or into bags of 42 marbles, with no marbles left over in each case, is the lowest common multiple between these two numbers.
By decomposing these numbers as a product of primes, we get:
18 = 2*3*3
42 = 2*3*7
Notice that the first two prime factors are the same, but the third one changes. To get the first common multiple, we need to multiply both numbers by the third factor (the different one) of the other.
We will get:
18*7 = 126
42*3 = 126
Then 126 is the smallest number that can be divided by 18 and 42.
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10. Complete the equation to make a true statement. Use the number
bank to fill in the statement.
-7-4
-4-2 1 2 3
Enter your answers in the boxes:
7
-
=
7
[
OA. 3,-4
B. 2,-2
O C. 1;-4
D. 2; 3
+
* 1 pc
The option (B) 2,-2 is correct because the number satisfy the provided expression.
What is an arithmetic operation?It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.
We have a number bank shown in the picture.
The problem given:
7 - __ = 7 + __
A. 3,-4
Checking for the above option:
7 - 3 = 7 - 4
4 = 3 (false)
B. 2,-2
Checking for the above option:
7 - 2 = 7 - 2
5 = 5 (true)
O C. 1;-4
Checking for the above option:
7 - 1 = 7 - 4
6 = 3 (false)
D. 2; 3
Checking for the above option:
7 - 2 = 7 + 3
5 = 10 (false)
Thus, the option (B) 2,-2 is correct because the number satisfy the provided expression.
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What are the factors pair of 32.
Answer:
1&32 2&16 4&8
Step-by-step explanation:
Factor Pair Pair Factorization
1 and 32 1 x 32 = 32
2 and 16 2 x 16 = 32
4 and 8 4 x 8 = 32
What is Parabola?
What is the transformation of parabolas?
Answer:
What is Parabola:
a symmetrical open plane curve formed by the intersection of a cone with a plane parallel to its side. The path of a projectile under the influence of gravity ideally follows a curve of this shape.
What is the transformation of parabolas?
The function y=x2+b has a graph which simply looks like the standard parabola with the vertex shifted b units along the y-axis. Thus the vertex is located at (0,b). If b is positive, then the parabola moves upwards and, if b is negative, it moves downwards. Similarly, we can translate the parabola horizontally
Step-by-step explanation:
-
If f(x) = 3x² − 4 and g(x) = 2x − 6, what is g(f(2))?
[tex]\\ \rm\Rrightarrow g(f(2))[/tex]
[tex]\\ \rm\Rrightarrow g(3(2)²-4)[/tex]
[tex]\\ \rm\Rrightarrow g(12-4)[/tex]
[tex]\\ \rm\Rrightarrow g(8)[/tex]
[tex]\\ \rm\Rrightarrow 2(8)-6[/tex]
[tex]\\ \rm\Rrightarrow 16-6[/tex]
[tex]\\ \rm\Rrightarrow 10[/tex]
Answer:
[tex]g[f(2)] = 10[/tex]
Step-by-step explanation:
Given functions:
[tex]\begin{cases}f(x)=3x^2-4\\g(x)=2x-6\end{cases}[/tex]
Find f(2) by substituting [tex]x = 2[/tex] into function f(x):
[tex]\begin{aligned}\implies f(2)& =3(2)^2-4\\& = 3(4)-4\\& = 12-4\\& = 8\end{aligned}[/tex]
Now substitute the found value of f(2) into function g(x):
[tex]\begin{aligned}g[f(2)] & = 2[f(2)]-6\\\implies g[f(2)] & =2(8)-6\\& = 16-6\\& = 10\end{aligned}[/tex]
Which equation represents an inverse variation?
O y = 2x
O y= f
0 y=
4
5
O y = -5x
Answer:
its y=2x so yaa thats ittt
expression equivlant (x+5)^2
Answer:
(x+5) (x+5)
Step-by-step explanation:
it's just (x+5)^2 twice
A wire goes from the top of a 55 ft pole to the ground. It makes a 70
o angle with the ground. How long is the wire? NEEDN ASAP!!! ill give 20 points for this
Answer:
58.5 ft
Step-by-step explanation:
sin 70=55/length
length=58.5 ft
Active
3
2
D(X)
4 5
de
8
9
TIME REMAINING
50:16
10
Which input value produces the same output value for
the two functions on the graph?
O x=-1
O
x = 0
O
x = 3
O x = 4
what’s the answer
Answer:If your in FLVS i don't really know because this give really hard things. Wish you luck
Step-by-step explanation:
Pls help and put equation and work
Step-by-step explanation:
that is a large gift. wow ! you have a lucky teacher ...
the surface of a block consists of 6 (3 pairs of) areas :
front and back
left and right
top and bottom
you know that the area of a rectangle is length × width ?
so,
front and back are
2× 9×13.5 = 18×13.5 = 243 m²
let and right are also
2× 9×13.5 = 243 m²
top and bottom are
2× 9×9 = 2 × 81 = 162 m²
so, for the whole package you need
243 + 243 + 162 = 648 m²
the money for that amount of wrapping paper alone would be way more than I ever spent on a teacher in my life ...
What is the length of EF?
Answer:
(a) 3.8
Step-by-step explanation:
The Law of Sines can be used to find a missing side length in a triangle where the angles are known and at least one side is given. It tells you the ratio of side lengths is equal to the ratio of the sines of their opposite angles. In effect, longer sides are opposite larger angles.
__
compare anglesThe given side length (DE=3) is opposite given angle F=50°. The unknown side length EF is opposite larger angle D=75°.
compare sidesSince the unknown side is opposite a larger angle than the other angle given, the length of the unknown side will be longer than the side given.
EF > DE
EF > 3
Only one answer choice satisfies this inequality.
EF = 3.8
__
Additional comment
If you want to do the actual computation, we have ...
EF/sin(D) = DE/sin(F)
EF = DE·sin(D)/sin(F) = 3·sin(75°)/sin(50°) ≈ 3.7828
EF ≈ 3.8
What is the inverse of the function f(x) =
1/9x+ 2?
Answer:
[tex]f^{-1}(x) = 9x -18.[/tex]
Step-by-step explanation:
[tex]y=f(x)=\dfrac 19 x +2\\\\\text{Replace x with y and then solve for y,}\\\\~~~~~~~x = \dfrac 19 y+2\\\\\implies 9x =y + 18~~~~~~~~~~~~~~~;[\text{Multiply both sides by 9}]\\ \\\implies y = 9x -18\\\\\implies f^{-1}(x) = 9x -18\\\\\text{Hence, the inverse of the given function is}~ f^{-1}(x) = 9x -18.[/tex]
Triangles
Calculate the perimeter of ABC
Answer:
40 units.
Step-by-step explanation:
Consider ∆ADC
Perimeter = 26cm (Given)
★ Perimeter of a triangle is the sum of its three sides.
=> AD + DC + AC = 26
Now, from the figure we can see that side AD = DC
Hence we can also write
=> AD + AD + AC = 26
=> 2AD + AC = 26
=> AC = 26 - 2AD ——— ‘1’
Consider ∆ ABC,
Let us consider it's perimeter to be ‘x’.
=> AB + AC + BC = x
Here also we can make out from the figure that side AB = BC
=> AB + AB + AC = x
=> 2AB + AC = x
From ‘1’ substituting AC value, we get
=> 2AB + ( 26 - 2AD ) = x
=> 2AB - 2AD + 26 = x
=> 2( AB - AD ) + 26 = x
=> 2 (7) + 26 = x ( Given )
Therefore perimeter of the ∆ABC (x) = 40
Which could be the missing data item for the given set of data if the median of the complete data set is 50?
21 23 60 60 50 54 54 59 26 15 43 15 A. 18
B. 24
C. 45
D. 57
Answer:
It's A
Step-by-step explanation:
Thx to the guy in the comments above
Answer:
It's A
Step-by-step explanation:
It's right
Use the given values to complete the table for the function below
y=2x^2+8x-5
A sequence has a second term of 1 and a common difference of -3.
The fifth term of the sequence is
10
-5
-11
-8
Answer:
-11
Step-by-step explanation:
I don't know how to type Numerical using a cellphone
Question 2(Multiple Choice Worth 2 points)
(04.03 MC)
4x-7
Given f(x) =
8x+8
what is the end behavior of the function?
The end behavior is that as x approaches positive infinity, f(x) approaches positive infinity and as x approaches negative infinity, f(x) approaches negative infinity
How to determine the end behavior?The function is given as:
f(x) = 8x+8
The above function is a linear function.
A linear function is represented as:
f(x) = mx + b
This means that the slope of f(x) is 8 (a positive number)
For a linear function with a positive slope, the end behavior is that:
As x approaches positive infinity, f(x) approaches positive infinity and as x approaches negative infinity, f(x) approaches negative infinity
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can i have help with this
Answer:
2^1
Step-by-step explanation:
a^m/a^n = a^(m-n)
so, 2^8/2^7 = 2^(8-7) = 2^1
hope this helps :)
Find the value of x y and z
Answer:
x = 115° , y = 65° , z = 115°
Step-by-step explanation:
x and 65° are a linear pair and sum to 180°
x + 65° = 180° ( subtract 65° from both sides )
x = 115°
y and 65° are vertically opposite angles and are congruent , then
y = 65°
x and z are vertically opposite angles and are congruent , then
z = x = 115°
CPA is parallel to BPD and so it is also equal to 65 degrees
And all you have to do to find CPB is 180-65=115 and CPB is Parallel to APD thus, its equal to 115 too!
CPA= 65 degrees
BPD=65 degrees
APD= 115 degrees
CPB=115 degrees
Hope i helped
TheOneAndOnlyLara~
Find the indicated conditional probability
using the following two-way table:
Grade
Drive to school Take the bus
Walk
Sophomore
2
25
3
Junior
13
20
2
Senior
25
5
5
P(Take the bus | Junior) = [?]
Round to the nearest hundredth.
Using it's concept, it is found that the desired probability is given by:
P(Take the bus | Junior) = 0.5714 = 57.14%.
What is a probability?A probability is given by the number of desired outcomes divided by the number of total outcomes.
In this problem, we have that out of the 13 + 20 + 2 = 35 Junior students, 20 take the bus, hence the probability is given by:
P(Take the bus | Junior) = 20/35 = 0.5714 = 57.14%.
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