The range of the function f(x) = | x + 2| - 2 for all x belongs to real is [-2,∞].
What are closed and open interval ?Closed interval includes the points and we denote it by third brackets and open interval do not include the points and denoted by first brackets.
According to the given question we have to determine the range of the function y = |x + 2| - 2 where domain of x ∈ R.
We know, |x + 2| ≥ = 0.
∴ | x + 2 | - 2 ≥ -2 and f(x) = | x + 2 | - 2 so, f (x) ≥ - 2, ∀ x ∈ R.
There fore the range of the function f(x) is [ -2, ∞ ].
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For each annual rate of change, find the corresponding growth or decay factor. +12.5 %
The growth factor for the annual rate of change of +12.5 % is 1.125.
A quantity must vary by a specific percentage each time period in order for growth or decay to be exponential.
With the function displayed to the right, you may represent exponential growth or decay.
A(x) = a( 1 + r)ˣ
Where A is the amount after x time periods, a is the initial amount, x is the number of time periods, and r is the rate of change.
Now, we have the annual rate of change as:
r = + 12.5 % = + 12.5 / 100 = + 0.125
From the function A(x) = a( 1 + r)ˣ , the corresponding factor is 1 + r.
So, let B = 1 + r
B = 1 + r
B = 1 + (+ 0.125)
B = 1.125
Now, the value of B is greater than 1 therefore, the corresponding growth factor is 1.125.
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Find the circumference and area of a circle with radius 7 cm. Express your answer in terms of π.
6π cm; 36π cm2
14π cm; 49π cm2
14π cm; 81π cm2
7π cm; 49π cm2
Answer:
The fourth option
Step-by-step explanation:
Formula to find the area of a circle is [tex]\pi r^{2}[/tex]
[tex]\pi 7^2[/tex]
[tex]49\pi[/tex]
In the figure below, j Il n. Find the values of y and x.
Answer:
y = 105
x = 31
Step-by-step explanation:
We have y and 75 as consecutive interior angles.
(Consecutive interior angles are are found between the two parallel lines and on the same side of the transversal)
Sum of two consecutive interior angles = 180°
so we have y + 75 = 180
y = 180-75 = 105
So y = 105
y and (3x+12) are opposite angles and are equal
So 3x+12 = y
3x + 12 = 105
3x = 105-12 = 93
x = 93/3 = 31
So x = 31
Select all of the Corresponding angles
Answer:
The top 2 and the bottom right!
Hope this helps!
Find the y-intercept from the
following linear equation:
-2x + 8y = -32
Answer:
(0, -4)
Step-by-step explanation:
hope this helps!!! :))
Solve the following inequality algebraically.
-4|2-x| 1 <-35
Answer:
x<-27/4
Step-by-step explanation:
−4(2−x)1<−35
Multiply −4 and 1 to get −4.
−4(2−x) <−35
Use the distributive property to multiply −4 by 2−x.
−8+4x<−35
Add 8 to both sides.
4x<−35+8
Add −35 and 8 to get −27.
4x<−27
Divide both sides by 4. Since 4 is positive, the inequality direction remains the same.
[ -2/3 x (-2/3) ] x ( -9/4)
The value of the expression [ -2/3 x (-2/3) ] x ( -9/4) is -1
What are expressions?Expressions are mathematical statements that are represented by variables, coefficients and operators
How to evaluate the expression?The expression is given as
[ -2/3 x (-2/3) ] x ( -9/4)
Evaluate the expression in the bracket
So, we have
[ -2/3 x (-2/3) ] x ( -9/4) = [4/9] x ( -9/4)
Evaluate the product
[ -2/3 x (-2/3) ] x ( -9/4) = -1
Hence, the value of the expression [ -2/3 x (-2/3) ] x ( -9/4) is -1
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i need help with matrix equations.
Answer:
[tex]\left[\begin{array}{ccc}-48&-60\\44&30\end{array}\right][/tex]
Step-by-step explanation:
0.5 X + 3A = B implies
X = 2(B-3A)
3A simply means multiplying each cell by 3
[tex]3A = \left[\begin{array}{ccc}12&24\\-33&-3\end{array}\right][/tex]
B-3A is a corresponding cell by cell subtraction
[tex]B-3A = \left[\begin{array}{ccc}-24&-30\\22&15\end{array}\right][/tex]
Finally multiply that by 2, result is at the top.
x - 1, x + 2 and 3x are the first three terms of an arithmetic sequence, find the first term and the fifth term by extracting the value of x.
Since they're in arithmetic progression, the difference between consecutive terms is fixed.
[tex](x + 2) - (x - 1) = 3[/tex]
[tex]3x - (x + 2) = 2x - 2 = 3 \implies 2x = 5 \implies x = \dfrac52[/tex]
Then the first term is
[tex]x-1=\dfrac52 - 1 = \boxed{\dfrac32}[/tex]
and the fifth term is
[tex]3x + 3 + 3 = 3\cdot\dfrac32 + 3 + 3 = \boxed{\dfrac21}2[/tex]
Sophia welcomes the fall with some cycling and walking fun! She cycles for 2 1/5 miles along a cornfield, and then after the break, she walks 3/4 of the distance she cycled. How many miles does she walk?
ANSWER NOW IM TIMED
Group of answer choices
A. 1 13/20
B. 59/20
C. 2.95
D. 2 19/20
Question
Solve the following system of equations.
Write your answer as an ordered pair in the form (x, y).
x = -3y-7
5x+6y =-8
Answer:
(2, -3)
Step-by-step explanation:
x= -3y-7
5x+6y=-8
1. Substitute x= -3y-7 into 5x+6y=-8 which becomes
5(-3y-7)+6y=-8
2. expand the brackets
-15y-35+6y=-8
3. simplify the equation
-9y-35=-8
4. from this we can find the value of y by adding 35 on each side and then dividing by -9 on each side
-9y=27
y=-3
5. so, the value of y is -3 to find the value of x we just substitute the value of y (-3) into the x=-3y-7
x= -3(-3)-7
expand the brackets and simplify the expression
x=9-7
x=2
6. so the value of x=2
7. your final answer will be (2, -3)
10. If PORS is a square and TR = 17, find each missing value.
Q
P
S
R
PR=
QS=
QT=
PQ=
m2PRS=
mZSTR
m/PSR=
m/QPR =
=
If PQRS is a square & TR= 17, then
PR= 34
QS= 34
QT= 17
PQ= [tex]17\sqrt{2}[/tex]
What is a square?A square in geometry is a two-dimensional plane figure having four equal sides and four equal but 90 degree angles. The characteristics of a rectangle and a square are somewhat comparable, however only the opposite sides of a rectangle are equal. So, only if all four of a rectangle's sides are the same length can it be said to be a square.
A square is a regular quadrilateral with four equal-length sides and four equal-length angles. The square's angles are 90 degrees or at right angles. In addition, the square's diagonals are equally spaced and split at a 90-degree angle. A square is another name for a rectangle with two sides that are opposite and the same length.
The following is a list of a square's most significant characteristics:
The sum of the four inner angles is 90°.The square's four sides are equal to one another or congruent. The square's opposing sides run parallel to one another. The square's diagonals form a 90° angle with one another. The two diagonals of the square are equal to one another. The square is made up of four vertices and four sides. Two identical isosceles triangles are formed by the diagonal of the square. The square has longer diagonals than sides.We know that,
Diagnose of a square are equal in magnitude and bisect each other.
So, In the given figure,
diagonals PR and QS are bisected at T.
RT = PT = 17
Hence,
PR=2RT=2*17=34
PR= 34
QS=34
[tex]QT=\frac{1}{2}QS = \frac{1}{2}*34 = 17[/tex]
QT=17
PQ = side of square
Let PQ= QR= a
In ΔPQR
[tex]PQ^{2} + QR^{2} = PR^{2}[/tex]
[tex]PQ^{2}+ PQ^{2} = 34^{2}[/tex]
[tex]2PQ^{2} = 34*34[/tex]
[tex]PQ = \sqrt{17*34} = 17\sqrt{2}[/tex]
PQ = [tex]17\sqrt{2}[/tex]
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Write an equation for a parabola with x-intercepts (-4,0) and (5,0) which passes through the point (1,-40)?
the equation for the parabola is:
f(x) = 2*(x + 4)*(x - 5)
How to write the equation for the parabola?We know that if a parabola has x-intercepts a and b, and a leading coefficient A, then the equation is:
f(x) = A*(x - a)*(x - b)
In this case the x-intercepts are x = -4 and x = 5, then we have:
f(x) = A*(x + 4)*(x - 5)
Now we use the fact that the parabola passes through the point (1, -40), then we have that:
f(1) = -40 = A*(1 + 4)*(1 - 5)
-40 = A*(5)*(-4) = A*-20
-40/-20 = A = 2
Then the equation for the parabola is:
f(x) = 2*(x + 4)*(x - 5)
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Find x and show work
Answer:
1.) 3x + 7 = -x - 1
*collect like terms
3x + x = -1 - 7
4x = -8
x = -2
2.) 4x - 3 = 1 - 2x + 5
*collect like terms
4x + 2x = 1 + 5 + 3
6x = 9
x = 9/6
x = 3/2
3. 4x - 2 + x = 2x - 2
*collect like terms
4x + x - 2x = -2 + 2
3x = 0
x = 0/3
x = 0
4.) 3x - 4 + 1 = 5x - 5 - 2x
*collect like terms
3x - 5x + 2x = - 5 + 4 - 1
(this is a tricky one ... sorry I can't figure the answer)
Simplify each expression. 16¹/₃. 4t/₃
The simplified form is [tex]4 ^{\frac{2+t}{3} }[/tex].
Simplify is to make something less complicated or much less cluttered. An instance of simplification is when you provide an explanation for a difficult math idea in truly smooth phrases for a kid to understand. An example of simplifying is whilst you chop out a whole lot of the activities that were making you busy and careworn. To turn out to be less difficult.
The phrase simplifies the approach to make something simpler to do or understand. So, by lowering or simplifying the fractions approach we make the fraction as simple as viable. We do this by dividing the numerator and the denominator via the biggest range that may divide into each number precisely.
Converting mixed numbers to an improper fraction,
[tex]16^{1/3} . 4^{t/3} \\4^{2/3} .4^{t/3} \\4^{\frac{2+t}{3} }[/tex]
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suppose we want to compare the price of a 50000 mercedes to the price of a 40000 lexus. Describe the absolute and relative difference.
Comparing the price of a 50000 mercedes to the price of a 40000 lexus The absolute price difference is 10000 while the relative price difference is 20%
How to find absolute price difference
Absolute difference refers to the gap between the prices. This implies the amount one has more than the other.
This could be solved by subtraction an is solves as follows:
price of a mercedes - price of a lexus
= 50 000 - 40 000
= 10 000
How to solve for relative price difference
Here, the price difference is expressed in percentage of the reference price being checked with. This is achieved using the formula below:
( price of a mercedes - price of a lexus ) / price of a mercedes * 100
= (( 50 000 - 40 000 ) / 50 000 ) * 100
= (( 10 000 ) / 50 000 ) * 100
= ( 0.2 ) * 100
= 20%
Hence the absolute price difference is 10 000 and the relative price difference is 20%
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Identify each function as linear, quadratic, or exponential. Explain your reasoning.
b. y=4(3) x
The function y = 4 (3) x which can also be written as 12 x - y = 0 is a linear function.
We are given the function:
y = 4 (3) x
Multiply 4 and 3, we get that:
y = 12 x
Now, subtract y from both the sides, we get that:
12 x - y = 0
We can see that the degree of each variable is 1 .
So, it will be a linear function.
Therefore, we get that, the function y = 4 (3) x which can also be written as 12 x - y = 0 is a linear function.
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Find the domain and the range of each function.
y=3 log x
The domain of the function is (0,∞) , {x|x>0}
and the range of the function is (−∞,∞), {y|y ∈ R}
given the function is y = 3 log x
Set the argument in log x greater than 0 to find where the expression is defined.
x > 0
The domain is all values of x that make the expression defined.
Interval Notation:
(0,∞)
Set-Builder Notation:
{x|x>0}
The range is the set of all valid y values. Use the graph to find the range.
Interval Notation:
(−∞,∞)
Set-Builder Notation:
{y|y∈R}
Determine the domain and range.
Domain: (0,∞) , {x|x>0}
Range : (−∞,∞), {y|y ∈ R}
Hence we get the required domain and range of the given function.
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Order the numbers from least to greatest.
Rahul wants to ride his bicycle 22 miles this week. He has already ridden 10 miles. If
he rides for 4 more days, what is the average number of miles he would have to ride
each day to meet his goal?
Answer:
Rahul needs to ride 3 miles a day to meet his target.==============================
GivenTarget distance = 22 miles,Distance already ridden = 10 miles,Time to travel the rest of the distance = 4 days,Average rate for 4 days = x miles.We have the following linear equation to represent given situation:
22 = 10 + 4xSolve it for x to get the average number of miles:
4x = 22 - 104x = 12x = 12/4x = 3In linear equation, He ride 3 miles each day.
Variable: x = Constant distance distance traveled each day.
Equation : 10+4x= 22
What is a formula for linear equations?
Y = mx + b, where x and y are the variables, m is the slope of the line, and b is the y-intercept, is a straightforward way to write the linear equation formula. Slopes provide information about a line's direction and steepness.Total distance needs to travel = 22 miles
Distance already traveled = 10 miles
He will ride bicycle for 4 more days.
Let x = Constant distance distance traveled each day.
Total distance = 10+4x
10+4x = 22
4x = 22 - 10
4x = 12
x = 3
Hence, he rode 3 miles each day.
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complete the input-output table for the function. then find the domain and range of the function represented by the table.
The Domain of set is {0, 2, 4, 6}
The Range of the set is {3, 2, 1, 0}
What is Range of set?
The range is the set of possible output values, which are shown on the y-axis.
The function is given as;
y = -1/2 x + 3
Now, The values of x are given as;
x = 0, 2, 4, 6
Hence, The value of y are find as;
When x = 0
y = -1/2 * 0 + 3 = 3
When x = 2
y = -1/2 * 2 + 3
y = 2
When x = 4
y = -1/2 * 4 + 3
y = 1
When x = 6
y = -1/2 * 6 + 3
y = 0
Hence, All values of y are {3, 2, 1, 0}
So, The Domain of set is {0, 2, 4, 6}
The Range of the set is {3, 2, 1, 0}
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about how much is a hippopotamus eat in a year with 365 days * 88 explain how you found your estimate is the estimate you found in Part B and overestimate or underestimate explain.
Answer:
365 * 88 (^7) = B=10
The length of a rectangle is twice its width. If the perimeter is 84 feet, what is the length of the rectangle?
Group of answer choices
14 feet
42 feet
21 feet
28 feet
The length of the rectangle according to the task content where the length of a rectangle is twice its width whose perimeter is; 84 feet is; 31.33.
What is the length of the rectangle as described in the tasks content where the perimeter is 84 feet?According to the task content, it follows that the length of the rectangle is twice its width, If the perimeter is 84 feet.
Since the perimeter of the rectangle in discuss can be determined as follows;
Perimeter = 2(l + w)
where l = 2w.
Therefore,
94 = 2(2w + w)
47 = 3w
w = 47/3
w = 15.667.
Ultimately, the length of the rectangle in discuss is; 2w = 2× 15.667
= 31.33 feet.
Therefore, the length of the rectangle according to the task content where the length of a rectangle is twice its width whose perimeter is; 84 feet is; 31.33.
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Cameron’s friends tells him of another service that has a 15$ joining fee but charges $0.80 per song. At what number of songs does this new service become a less expensive option than Cameron’s current service
Based on Cameron's current music service fees, the number of songs that would make the new service a less expensive option is 101 songs
What number makes the service less expensive?The expression for the new service assuming the number of songs is x is:
= 15 + 0.80x
The expression for Cameron's current service is:
= 0.95x
Equating them gives:
0.95x = 15 + 0.8x
0.95x - 0.8x = 15
0.15x = 15
x = 100 songs
The cost will be the same at 100 songs so the new service would be cheaper at 101 songs.
First part of question:
Cameron pays $0.95 per song with his current music service.
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Simplify 1/2 + 2/3 x 3/14
Answer: x=28/3=9.333
Step-by-step explanation:
Answer:
1/2 + 2/3 × 3/14
Step 1: you multiply first
= 2/3 × 3/14
= 6/42
= 7
Step 2: Now add
= 1/2 + 7
LCM = 14
= 1/2 + 7/1
= 1 + 14
2
= 15/2.
or 7.5
or 7½
blems.
You bike for 3 hours to reach the beach. Using the same route, the return trip takes only.
2.5 hours because you travel 2miles per hour faster How far do you bike to get to the
beach?
Answer:
r = 10 mph
Step-by-step explanation:
3 hr. x rate = 2.5 hr x (rate + 2
r = 10 mph
Answer:
r = 10 mph
Step-by-step explanation:
pleas help describe if the triangle is acute, obtuse or right.
Please help me, this is algebra
Answer:
for question a)
yes it is a function
Step-by-step explanation:
more hours studied = higher score
Solve the inequality x^2 + 5x + 4 < 0 by any method. Write your answer in interval notation when appropriate.
Answer:
- 4 < x < -1
Step-by-step explanation:
PLEASE HELP MEH MARKING BRAINLIEST
Answer:
27
Step-by-step explanation:
Count each individual cube.Answer: Volume is calculated by lenght x width x height ,so you would say 6 x 4 x 4. Which is 96 cubic units !!!
Step-by-step explanation: