Answer:
[2, 6].
Step-by-step explanation:
Notice that there is a red line (graph) only for [2, 6]. Thus, the domain of this function is [2, 6].
What is a number of subsets for the set which contains the 10 elements.
Answer:
The number of subsets of a set containing 10 elements is 2^10=1024.
Step-by-step explanation:
A rectangle is 1 inch longer than it is wide. Its diagonal is 5 inches. What's the width of the rectangle?
Answer:
Step-by-step explanation:
Let x be the length and y be the width
The length is 1 inch longer than the width
So : x-1 =y
●●●●●●●●●●●●●●●●●●
The diagonal is 5 inches
The diagonal, width and length are forming a right triangle where the diagonal is the hypotenus
The Pythagorian theorem:
x^2 + y^2 = 5^2
●●●●●●●●●●●●●●●●●●●●●●●
Let's calculate y the width
The system is :
x-1 = y => x =y+1
x^2 + y^2 = 25
Replace x in the second equation with y+1 :
(y+1)^2 + y^2 = 25
y^2 + 2y + 1 + y^2 = 25
2y^2 + 2y +1 = 25
2y^2 + 2y -24 = 0
This is a quadratic equation so we will use the discriminant
●●●●●●●●●●●●●●●●●●●●●●
the discriminat is b^2-4ac
● b =2
● a = 2
● c = -24
b^2 -4ac = 4-4*2(-24) =196 > 0
Since the dicriminant is positive this equation has two solutions y and y'
y = (-2-14)/4 = -16/4 = -4
y '= (-2+14)/4 = 12/4 = 3
The first solution is negative
A distance is always positive so the first solution can't be the width
Then the width is 3
The function represented by graph B is g(x) = _________
The function represented by graph C is h(x) = _________
Answer:
[tex]g(x)=\sqrt[3]{x-1}[/tex]
[tex]h(x)=\sqrt[3]{x}-1[/tex]
Step-by-step explanation:
Graph represents the parent function
[tex]f(x)=\sqrt[3]{x}[/tex]
The translation is defined as
[tex]g(x)=f(x+a)+b[/tex]
Where, a is horizontal shift and b is vertical shift.
If a>0, then the graph shifts a units left and if a<0, then the graph shifts a units right.
If b>0, then the graph shifts b units up and if b<0, then the graph shifts b units down.
From the the given graph it is clear that graph A shifts 1 unit right to get the graph B. So, a=-1, b=0.
[tex]g(x)=\sqrt[3]{x-1}[/tex]
From the the given graph it is clear that graph A shifts 1 unit down to get the graph C. So, a=0, b=-1.
[tex]h(x)=\sqrt[3]{x}-1[/tex]
Therefore, the required functions are [tex]g(x)=\sqrt[3]{x-1}[/tex] and [tex]h(x)=\sqrt[3]{x}-1[/tex].
Which answer is equal to i^45
Answer:
i
Step-by-step explanation:
The pattern is as follows
i^1 = i
i^2 = -1
i^3 = -i
i^4 = 1
Following this pattern, i^45 = i.
The value of the expression [tex]i^{45[/tex] is equal to i
Complex numbers are the square root of negative numbers. For instance:
[tex]\sqrt{-1} = i\\i^2 = -1[/tex]
Given the complex number:
[tex]i^{45}\\= (i^2)^{22} \times i\\= (-1)^{22} \times i[/tex]
Since any value raise to the even values will give a positive value hence;
[tex]=(-1)^{22} \times i\\=1 \times i\\= i[/tex]
This shows that the value of the expression [tex]i^{45[/tex] is equal to i
Learn more here: https://brainly.com/question/12769464
Help ASAP I stink at these i always give brainliest and thanks
Answer:
A
Step-by-step explanation:
Using the recursive formula with a₁ = 5 , then
a₂ = 2a₁ - 7 = 2(5) - 7 = 10 - 7 = 3
a₃ = 2a₂ - 7 = 2(3) - 7 = 6 - 7 = - 1
a₄ = 2a₃ - 7 = 2(- 1) - 7 = - 2 - 7 = - 9 → A
Determine if the following triangle is a right triangle or not using the Pythagorean theorem converse. Triangle with side lengths:8 in,15 in and 17 in
A.true,these measures do form a right triangle
B.false,these measures do not form a right triangle
Answer:
Picture of the problem please?
Step-by-step explanation:
Naomi fish is 40 millimeters a humid pig is 25 centimeters long how much longer is the humid pig
Answer:
The humid pig is 210 millimeters longer.
Step-by-step explanation:
Naomi fish= 40 millimeters
Humid pig = 25 centimeters
1 centimeter is equal to 10 millimeters.
Naomi fish - 40 millimeters
Humid pig- 250 millimeters
To find how much lobger the humid pig is subtract 40 from 250.
250-20 = 210
210 millimeters longer.
Answer:
Step-by-step explanation:
we know that
Answers in cm
we know that
Naomi's fish is 40 millimeters long
convert to centimeters
and
her guinea pig is 25 centimeters long
Find the difference
so
The guinea pig is much longer than her fish
Answers in mm
we know that
Naomi's fish is 40 millimeters long
and
her guinea pig is 25 centimeters long
convert to millimeters
Find the difference
so
The guinea pig is much longer than her fish
How did the temperature change if: at first it decreased by 10 % and then decreased by 30% ?
Answer:
We decreased by 37%
Step-by-step explanation:
Let x be the starting temperature
We decrease by 10 percent which means we are left with 100-10 =90 percent
.90 x
Then we decrease by 30 percent, 100 - 30 = 70
( .90x) * .70
.63x
We have .63 of the original left or 63%
100 -63 = 37
We decreased by 37%
Answer:
37% and it decreased
Step-by-step explanation:
Write the following as an equation. Then solve.
The sum of eight times a number, and 8, is equal to seven times the number
Write the above sentence as an equation
Answer:
8x+8=7x
Step-by-step explanation:
The variable is supposed as x where ever the exact number is not mentioned.
n*8 + 8 = n*7 --> the answer must be n = -8 because:
8n + 8 = 7n
8n - 8n + 8 = 7n - 8n
8 = -1n
-8 = n
Use what you know about zeros of a function and end behavior of a graph to choose the graph that matches the function f(x)=(x-2)(x-1)(x-4)
Answer:
The last one
Step-by-step explanation:
The zeros of a function f(x) are the values of x such that f(x)=0. Since the coordinate y equals f(x), we must look for the values where y=0 (x-intersect).
Since f(x) is factorized, f(x)=0 only when one of its factors equals zero.
So we have
f(x) = 0 ===> x+2 = 0 OR x+1 = 0 OR x+4 = 0
and we have
x = -2 or x = -1 or x = -4
Hence the function must intersect the x-axis at these points.
The only graph that matches the requirements is the last one.
If I'm wrong I'm so sorry!
If I'm right Thank you and (Brainliest plz)
5*2568?252+2626*25625-26236
Answer:
if the ? is suppose to be a + then the answer is : 67278106
Step-by-step explanation:
Lewis Hamilton completed the first lap at the Monaco Grand-Prix with an average speed of 125 mi/h. His goal is to complete the first two laps with an average speed of 250 mi/h. How fast (in terms of average speed) should his second lap be?
Answer:
infinitely fast
Step-by-step explanation:
To have double the average speed, he must complete the two laps in the same amount of time that he spent completing the first lap. That is, he must complete the second lap in zero time.
Hamilton's average speed for the second lap should be infinite. (He needs to finish it in zero time.)
_____
speed = distance/time
Multiplying by 2, we get ...
2×speed = 2×distance/time . . . . . the time hasn't changed
the points plotted below are on the graph of a polynomial. How many roots of the polynomial lie between x=-4 and x=3
Answer:
1 zero: Answer C
Step-by-step explanation:
Keep in mind that the polynomial value is zero at any root. Therefore each point that is a root must lie precisely on the x-axis (where y = 0). In the graph given there is only one such point (Answer C)
PLEASE HELP ME!!! ASAPPPPP!!!!!!
expand and simplify
Answer:
8x+11
Step-by-step explanation:
This problem can be solved by using distributive property.
if there is expression a(b + c).
then by distributive property.
a(b + c). = ab + ac
given problem
3(2x+1) + 2(x+4)
by using distributive property.
=>3*2x + 3*1 + 2*x + 2*4
=> 6x + 3 + 2x + 8
adding term containing x together and constant term together
=> 8x + 11
Thus, solution is 8x+11
How many non-congruent triangles can be formed by connecting 3 of the vertices of the cube?
Answer:
The number of non-congruent triangles that can be formed by connecting 3 of the vertices of the cube is 3 non-congruent triangles
Step-by-step explanation:
From the three dimensional shape of a cube, triangles can be constructed from;
1) 6 side faces
2) 4 front face to opposite vertices triangles
3) 4 rear face to opposite vertices triangles
Each face can produce ₄C₃ = 4 triangles
Therefore;
The total number of triangles that can be formed = 4 × 6 + 4 × 4 + 4 × 4 = 56 triangles
Of the 56 triangles, it will be found that all 24 triangles from the different 6 direct faces will have the same dimension of 1, 1, √2 are congruent
The 24 triangles formed by the sides of the faces and an adjacent diagonal have the same dimension of 1, √2, √3 and are congruent
The 8 triangles formed by joining the three diagonals have the same dimension of √2, √2, √2 are congruent
Therefore, the 56 triangles comprises of a combination of three non-congruent triangle.
There are only 3 observed non congruent triangles formed by connecting three of the vertices of the cube.
Answer:
Answer is 3, i had it for homework
Step-by-step explanation:
PLZ HELP QUICKLY, Prove triangle BED is congruent to BEF...need at least 3 reasons
Answer:
Step-by-step explanation:
1. DE = DF (Def of midpoint)
2. EB = EB (Reflexive)
3. <DEB is congruent to <FEB
3. EB is a transversal- alternate interior angles are congruent
4. SAS
4. SAS theorem states that two triangles are equal if two sides and the angle between those two sides are equal.
Determine the measure of obtuse angle A. answers: A) 130° B) 122° C) 58° D) 7°
Answer:
B) 122 degrees.
Step-by-step explanation:
Consider the kite :- the 2 angles at the tangents are 90 degrees so we have:
9x - 5 + 14x + 24 + 90 + 90 = 360
9x - 5 + 14x + 24 = 180
23x + 19 = 180
23x = 161
x = 7
So the obtuse angle = 14(7) + 24
= 98 + 24
= 122 degrees.
PLEASE HELP WITH THIS(INORDER FOR ME TO GIVE YOU A BRIANLIST,EXPLAIN HOW U GOT IT)(will give brainlist and thanks)(Find the perimeter)
Answer:
7x+10 cm
Step-by-step explanation:
To find the perimeter add up all the sides
There are 5 sides
3x+ 5+ 2x+2x+5
Combine like terms
3x+2x+2x +5+5
7x + 10
The perimeter is 7x+10 cm
in which number does the digit 5 have a value that is 10 times as great as the digit 5 in the number 4.59?
Answer:
B) 2775.9
Step-by-step explanation:
The missing options are:
A) 578
B) 2775.9
C) 134.591
D) 31.757
The digit 5 is in the tenths in 4.59. This means that its value is 0.5. A value 10 times greater is 10*0.5 = 5, that is, a 5 in the ones, like in 2775.9.
Need help answering this problem
Answer:
(a) Local Maximum (x,y) = (0,12)
Local Minimum (x,y) = (-9,6) (smaller x-value)
Local Minimum (x,y) = (6,3) (Larger x-value)
(b) Increasing = [tex](-9,0)\cup (6,\infty)[/tex]
Decreasing = [tex](\infty,-9)\cup (0,6)[/tex]
Step-by-step explanation:
(a)
Local Maximum: The function gives maximum value in small neighborhood.
From the given graph it is clear that the maximum value of the function is 12 at x=0. So,
Local Maximum (x,y) = (0,12)
Local Minimum: The function gives minimum value in small neighborhood.
It is clear that the minimum value of the function is -6 and 3 at x=-9 and x=6. So,
Local Minimum (x,y) = (-9,6) (smaller x-value)
Local Minimum (x,y) = (6,3) (Larger x-value)
(b)
The function is increasing on -9<x<0 and after 6.
Increasing = [tex](-9,0)\cup (6,\infty)[/tex]
The function is decreasing on 0<x<6 and before -9.
Decreasing = [tex](\infty,-9)\cup (0,6)[/tex]
Determine the domain of the function 9x/ x(x^2-49)
Answer:
Step-by-step explanation:
9
The given function may be reduced to -------------- , x ≠ 0 because we cannot
x^2 - 49
division by zero in the original form of the function is undefined. Furthermore, x cannot be either ±7, for the same reason.
Thus, the domain of this function h(x) is {x ≠ 0, x ≠ ±7}
-((-7) +(4)(-12)+(-3)(11)+(-2))
Answer:
90
Step-by-step explanation:
-((-7) + 4 × (-12) + (-3) × 11 + (-2))
-(-7 + 4 × (-12) + (-3) × 11 + (-2))
-(-7 - 48 - 33 - 2)
-(-90) → 90
Final Answer - 90
Hope this helped! :)
Answer:
90
Step-by-step explanation:
Recall Order of Operations rules that require that computations inside parentheses must be done first. Next, multiplication be done before addition or subtraction.
-((-7) +(4)(-12)+(-3)(11)+(-2)) can be re-written as
- ((-7) +(4)(-12)+(-3)(11)+(-2)), which in turn becomes:
-( -7 - 48 - 33 - 2 ), or
-( -55 - 35), or
- (-90), or 90
URGENT !!! f(x) = x^2. what is g(x)?
Answer:
C
Step-by-step explanation:
Hello
The point (2,1) is on he graph of g
which means that g(2)=1
for A g(2)=2*4=8
for B g(2)=1/(2*2)
for C g(2)=1
for D g(2) =4/2=2
for the correct answer is C
Hope this helps
how would i do number 2?
Answer:
m=2
Step-by-step explanation:
When you put a number into the inverse of a function (f^-1) you get the original number back.
Ex: f^-1(11) = (11-3)/2 = 4
f(4) = 2×4+3 = 11
So, f(-5)=-2
So, when x is -5,
f(x) = -2
f(x)=m(-5)+8
-2=m(-5) + 8
m=2
Graph the inequality on the axes below.
2x + 5y 3-5
Answer:
there ARE NO AXES
Step-by-step explanation:
box plots show the data distributions for the number of customers who used a coupon each hour during a two-day sale. Which measure of variability can be compared using the box plots? interquar
Answer:
A. Interquartile
Step-by-step explanation:
Answer:
A: interquartile range
Step-by-step explanation:
edg2020
please help for math
Answer:
2.35 m²
Step-by-step explanation:
Divide the shape into shapes you can calculate the area of: a rectangle with a semi-circle on top, minus a square.
1. Calculate the area of the rectangle. Formula for area of a rectangle is length · width
1 m · 2 m = 2 m²
2. Calculate the area of the semi-circle. Formula for a semi-circle is [tex]\frac{\pi r^{2} }{2}[/tex] (use 3.14 for π) (radius is equal to half the diameter)
3.14(0.5)² = 0.785
0.785 ÷ 2 = 0.3925 m²
3. Combine the total area
2 + 0.3925 = 2.3925
4. Calculate the area of the square that will not be painted. Formula for area of a square is s² (side · side)
0.2² = 0.04 m²
5. Subtract the area of the square from the total area
2.3925 - 0.04 = 2.3525
2.3525 rounds to 2.35 m²
With 98% confidence interval and n = 25. Find left critical value for Zinterval.
0 -2.492
0 -2.05
0 -2.797
-2.326
Answer:
[tex]\alpha=1-0.98 =0.02[/tex]
And [tex]\alpha/2 0.01[/tex], the degrees of freedom are given by:
[tex] df= n-1= 25-1=14[/tex]
Then the critical value using the t distribution with 24 degrees of freedom is:
[tex] t_{\alpha/2}= \pm 2.492[/tex]
And the best solution would be:
0 -2.492
Step-by-step explanation:
For this problem we know that the sample size is n = 25. The confidence level is 98% or 0.98 then the significance would be:
[tex]\alpha=1-0.98 =0.02[/tex]
And [tex]\alpha/2 0.01[/tex], the degrees of freedom are given by:
[tex] df= n-1= 25-1=14[/tex]
Then the critical value using the t distribution with 24 degrees of freedom is:
[tex] t_{\alpha/2}= \pm 2.492[/tex]
And the best solution would be:
0 -2.492
help please :))))))))
Answer: 35/24 is the answer for the first part only.
Use calculator soup on google search to answer the rest.
Step-by-step explanation:
hi :) how to do question 7 ?
Answer:
Step-by-step explanation:
We khow that the equation of a circle is written this way :
(x-a)²+(y-b)²=r² where (x,y) are the coordinates of the cercle's points and (a,b) the coordinates of the cercle's center and r the radius .
Our task is to khow the values of a and b :
We khow that the center is lying on the line 3x+2y=16⇒ 2y=-3x+16⇒ y= [tex]\frac{-3}{2}[/tex]x+8 We khow that the points P and Q are two points in the cercle Let Ω be the center of this cercle we can notice that : PΩ AND QΩ are both equal to the radius ⇒ PΩ=QΩ= rSo let's write the expression of this distance using vectors KHOWING THAT Ω(a,b)Vector PΩ(a-4,b-6) and Vector QΩ(a-8,b-2) PΩ=[tex]\sqrt{(a-4)^{2}+(b-6)^{2} }[/tex] and QΩ=[tex]\sqrt{(a-8)^{2}+(b-2)^{2} }[/tex] Let's substitute a by x and b by y PΩ=QΩ we substitute each distance by its expression After simplyfying the expressions we get finally : -12+8x-8y=0 now we have -12x +8x-8y=0 and the line equation 3x+2y-16=0 these are simultanious equations so after solving them we get x=3.8 wich is approximatively 4 and y=2 we substitute a by 4 and y by 2 in PΩ to get the radius we get r = [tex]\sqrt{(4-4)^{2}+(2-6)^{2} }[/tex] = 4 so r²= 16 then the equation is : (x-4)²+(y-2)²=16