Answer:
no he is not correct
Step-by-step explanation:
Algebraically, find the roots of x² - 4x - 5=0,
Substitute each given value of the variable to find which, if any, is a solution of inequality.
Given:
The inequalities are:
a) [tex]w<-8, w=-4.3, -5.3, -8.3, -9[/tex]
b) [tex]t>-25, t=-24, -25, -25.1, -27[/tex]
To find:
The solution of inequalities by substituting the given values.
Solution:
a) We have,
[tex]w<-8, w=-4.3, -5.3, -8.3, -9[/tex]
After substituting the given values one by one, we get
[tex]-4.3<-8[/tex] False statement.
[tex]-5.3<-8[/tex] False statement.
[tex]-8.3<-8[/tex] True statement.
[tex]-9<-8[/tex] True statement.
Therefore the solutions of [tex]w<-8[/tex] are [tex]w=-8.3, -9[/tex].
b)
We have,
[tex]t>-25, t=-24, -25, -25.1, -27[/tex]
After substituting the given values one by one, we get
[tex]-24>-25[/tex] True statement.
[tex]-25>-25[/tex] False statement.
[tex]-25.1>-25[/tex] False statement.
[tex]-27>-25[/tex] False statement.
Therefore, the solution of [tex]t>-25[/tex] is [tex]t=-24[/tex].
What is the average rate of change between Hour 1 and Hour 4? QUICKLY
Answer:
2%
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
What is the value of the third quartile of the box plot shown?
39
39
25
25
20
20
19
19
Hello, I Am BrotherEye
Answer: Here is an Example On How To Solve Your Problem.
Step-by-step explanation:
Explanation:
29
,
33
,
36
,
37
,
39
,
40
,
41
The minimum is the lowest number in the data set.
Since it is listed from smallest to largest, we know that the minimum is
29
.
The median is the middle number. Cancel out
3
numbers from each side and we are left with the median:
29
,
33
,
36
,
37
,
39
,
40
,
41
Therefore, the median is
37
.
The first quartile (Q1) is the median of the lower half of data which lies at 25% of the data.
Let's look at the lower half of numbers:
29
,
33
,
36
The number in the middle is
33
, so that is the first quartile.
The third quartile (Q3) is the median of the upper half of data which lies at 75% of the data.
Let's look at the upper half of numbers:
39
,
40
,
41
The number in the middle is
40
, so that is the third quartile.
The maximum is the highest number in the data set; it is
41
.
So here's the five-number summary:
Minimum: 29
First quartile: 33
Median: 37
Third quartile: 40
Maximum: 41
What are the x-intercepts of the graph of y= (x - 2) (x – 4)?
Answer: The x-intercepts of the parabola are (2,0) and (4,0).
Step-by-step explanation:
helppp me plsssssssss
Answer:
The class 35 - 40 has maximum frequency. So, it is the modal class.
From the given data,
[tex]\sf \:\:\:\:\:\:\:\:\:\:x_{k}=35[/tex][tex]\sf \:\:\:\:\:\:\:\:\:\:f_{k}=50[/tex][tex]\sf \:\:\:\:\:\:\:\:\:\:f_{k-1}=34[/tex][tex]\sf \:\:\:\:\:\:\:\:\:\:f_{k+1}=42[/tex][tex]\sf \:\:\:\:\:\:\:\:\:\:h=5[/tex][tex] {\bf \:\: {By\:using\:the\: formula}} \\ \\ [/tex]
[tex]\:\dag\:{\small{\underline{\boxed{\sf {Mode,\:M_{o} =\sf\red{x_k + {\bigg(h \times \: \dfrac{ ( f_k - f_{k-1})}{ (2f_k - f_{k - 1} - f_{k +1})}\bigg)}}}}}}} \\ \\ [/tex]
[tex]\sf \:\:\:\:\:\:\:\:\:= 35+ {\bigg(5 \times \dfrac{(50 - 34)}{ ( 2 \times 50 - 34 - 42)}\bigg)} \\ \\ [/tex]
[tex]\sf \:\:\:\:\:\:\:\:\:\:\:\:\:\:\:= 35 +{\bigg(5 \times \dfrac{16}{24}\bigg)} \\ \\ [/tex]
[tex]\sf \:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:= {\bigg(35+\dfrac{10}{3}\bigg)} \\ \\ [/tex]
[tex]\sf \:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:(35 + 3.33) =.38.33 \\ \\ [/tex]
[tex]\:\:\sf {Hence,}\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\ \large{\underline{\mathcal{\gray{ mode\:=\:38.33}}}} \\ \\ [/tex]
[tex]{\large{\frak{\pmb{\underline{Additional\: information }}}}}[/tex]
MODE
Most precisely, mode is that value of the variable at which the concentration of the data is maximum.MODAL CLASS
In a frequency distribution the class having maximum frequency is called the modal class.[tex]{\bf{\underline{Formula\:for\: calculating\:mode:}}} \\ [/tex]
[tex]{\underline{\boxed{\sf {Mode,\:M_{o} =\sf\red{x_k + {\bigg(h \times \: \dfrac{ ( f_k - f_{k-1})}{ (2f_k - f_{k - 1} - f_{k +1})}\bigg)}}}}}} \\ \\ [/tex]
Where,
[tex]\sf \small\pink{ \bigstar} \: x_{k}= lower\:limit\:of\:the\:modal\:class\:interval.[/tex]
[tex] \small \blue{ \bigstar}[/tex][tex]\sf \: f_{k}=frequency\:of\:the\:modal\:class[/tex]
[tex]\sf \small\orange{ \bigstar}\: f_{k-1}=frequency\:of\:the\:class\: preceding\:the\;modal\:class[/tex]
[tex]\sf \small\green{ \bigstar}\: f_{k+1}=frequency\:of\:the\:class\: succeeding\:the\;modal\:class[/tex]
[tex] \small \purple{ \bigstar}[/tex][tex]\sf \: h= width \:of\:the\:class\:interval[/tex]
A circle with centre O has a radius of 6.2 cm.
AB is a diameter of the circle.
ABCD is a square.
Calculate the area of the shaded region.
You must show all your working.
Answer:
it could either be 10.781 or 65.6, if not either of em then iam truly very sorry
Step-by-step explanation:
You can send 34 text messages in 12 minutes. How many minutes does it take you to send 68 messages?
Answer:
24
Step-by-step explanation:
34 messages per 12 minutes
68 is just 34 mulitplied by 2.
it would take you twice as long because there are twice as many messages.
12 minuted multipled by 2 is 24.
It would take you 24 minutes to send 34 messages.
Answer:
24 minutes
Step-by-step explanation:
34/12
68/x
34*2=68
12*2=24
Need help plzzzzz helpppp 20 points and if right I will mark brainlest
Answer:
Hi! Okay so i tried to find all the x and y intercepts that matched with (-4,7) and the closest one is C I'm not 100% sure its correct but its the only one that makes the most sense, its coordonated are (-8,4) i'm so sorry if u get it wrong
Step-by-step explanation:
☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆
☆Don't worry i wont ask for brainliest this time☆
Have a nice day!!!!!!!
- Brooklynn Deka
If the base of a Pyramid has an area of 144sq ft And if the slant higher of the pyramid is 10ft what would be the higher of the pyramid
Answer:
the height of the pyramid is 8 ft
Step-by-step explanation:
Considering the base of the pyramid to be square whose area is 144 sq ft
This means the side of the base would be √144 = 12 ft.
Now, if you will imagine a pyramid we can easily observe that
Height(H) , slant height( L=10 ft) and half of the side length( 6ft) make a right angle triangle. We can easily calculate height from Pythagoras theorem as
10^2 = H^2 +6^2
⇒ H^2 = 10^2-6^2 = 100-36 = 64
⇒ H = 8 ft
Therefore, the height of the pyramid is 8 ft
Which two expressions are
equivalent?
A. (7.x) - 12 and (x-7) - 12
B. (x + 4) = 10 and x + (4 = 10)
C. 30. (x - 4) and 30 · (4 - x)
D. 18 - (8 + x) and (8 + x - 18)
HELP!!!
Answer:
B
Step-by-step explanation:
I don't have an explanation but i know its right!!!
Help please! Im on my last question! 15 points.
Question below!
Answer:
n^2 + 12 = 61
-12 -12
n^2 = 49
Step-by-step explanation:
7 is your answer
7 x 7 = 49 + 12 = 61
Ja'hones has pizza dough for making pizza. she separates the dough into three portions
listed below.
Portion A is 8.25 ounces
Portion B is twice as much as portion A
Portion C is twice as much as portion B
What is the weight, in ounces, of portion B and the weight, in ounces, of portion C?
Answer:
Portion B is 16.5 ounces.
Portion C is 33 ounces.
Step-by-step explanation:
Portion B.
8.25 * 2 = 16.5
Portion C.
16.5 * 2 = 33
Hope this helps! :)
WILL REWARD BRAINIEST! A right rectangular container is 6 cm wide and 10 cm long and contains water to a depth of 7cm. A stone is placed in the water and the water rises 1.7 cm. Find the volume of the stone.
Answer:
102cm^3
Step-by-step explanation:
v=l×w×h
10x6x7=420 cm^3
the volume of water+stone=
10×6×(7+1.7)
522cm^3
522-420= 102cm^3
The solution is: the volume of the stone is : 102cm^3.
What is volume?In mathematics, volume is the space taken by an object. Volume is a measure of three-dimensional space. It is often quantified numerically using SI derived units or by various imperial or US customary units. The definition of length is interrelated with volume.
Here, we have,
Given that,
A right rectangular container is 6 cm wide and 10 cm long and contains water to a depth of 7cm. A stone is placed in the water and the water rises 1.7 cm.
We know that,
volume is :
v=l×w×h
so, we get,
10x6x7=420 cm^3
the volume of water+stone=
10×6×(7+1.7)
522cm^3
522-420= 102cm^3.
Hence, The solution is: the volume of the stone is : 102cm^3.
To learn more on volume click :
brainly.com/question/1578538
#SPJ2
12 + 6 − 4 ÷ (2 + 5)
A. Divide 4 by 2.
B. Add 2 and 5.
C. Add 12 and 6.
D. Subtract 4 from 6.
An experienced carpenter could build a house in 4 days. How much would he have finished if
he worked for 3 days?
Answer:
Percentage: 75%
Fraction: 3/4
Step-by-step explanation:
An angle measures 56° less than the measure of its supplementary angle. What is the measure of each angle?
Answer:
118, 62
Step-by-step explanation:
We can set a system of equations where x and y are the two angles and x is the larger one
x+y=180
x-y=56
If we subtract the second equation from the first, we get 2y=124, simplifying that, we get y=62. Plugging it into either equation, we get x=118. We can check that 118 is 56 larger than 62, which it is. Thus, x=118, y=62.
cual es la raiz de 28
Answer:
5.29150262213
Step-by-step explanation:
I hope this answer has helped you
Mrs. Drilon’s electric meter reading last month was 1023, and her present electric meter reading is 1053. What is her electric consumption?
Answer:
30
Step-by-step explanation:
Subtract the 1023 reading from the 1053 one:
1053
-1023
---------
30
Her electric consumption was 30.
What is 6.23 billion in scientific notation?
Answer:
6.23 E9
Step-by-step explanation:
1 Billion = 1 E9
6.23 billion = 6.23 E9
Leave a thanks and mark brainliest if this helped.
Leave a thanks and mark brainliest if this helped.
answer number 2 pls
Answer:
H
Step-by-step explanation:
Given
4(15 - 7) ← apply the distributive law
= 15(4) - 7(4) → H
HELP! What is the greatest common factor of 20a2b2 and 50b3?
Simplify:
3×5-1-(2² +6÷2)
Answer:
7
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
3×5-1-(2^2+6÷2)
3×5-1-(4+6÷2)
3×5-1-(4+3)
3×5-1-7
15-1-7
14-7
7
can someome help me
Answer:
KM = 30
Sorry if this is not what you where looking for you did not describe exactly what you wanted
When a system of two linear equations has no solution, how do the graphs of the equations appear?
Answer:
parallel lines that never intersect.
Step-by-step explanation:
When dealing with two linear equations that have no solution, it means that they usually have two variables and are part of a system of equations. Such an example would be the following two equations
2x - y = 2
4x - 2y = 8
These two equations would be part of the same system and they have no solution because there is no pair of values that will give a valid solution to both for the variables x and y. In a graph these equations would appear as parallel lines that never intersect. This is why no solution is found, because there is no intersection.
Camila is working two summer jobs, making $10 per hour lifeguarding and $6 per hour walking dogs. Last week Camila worked 5 more hours lifeguarding than hours walking dogs and earned a total of $114. Write a system of equations that could be used to determine the number of hours Camila worked lifeguarding last week and the number of hours she worked walking dogs last week. Define the variables that you use to write the system.
Let L = the numbers of hours lifeguarding
Let D = the number of hours walking dogs
Camila makes $10 per hour lifeguarding, so in L hours she will make 10L dollars. Camila makes $6 per hour walking dogs, so in D hours she will make 6D dollars. The total amount earned 10L+6D equals $114.
Since Camila worked 5 more hours lifeguarding than hours walking dogs, she worked more hours lifeguarding, so if we add 5 to the number of hours walking dogs, we will get the number of hours lifeguarding, meaning L equals D+5.
10L+6D=114
L=D+5
Need help ASAP
work out the value of 4y + 3x when x=5 and y=-3
( these are the only answers I can choose from)
A.32
B.-32
C.17
D.11
All support appreciated:)
Answer:
3
Step-by-step explanation:
4y+3x
4(-3)+3(5) Plug the numbers into the equation.
-12+15
3
Hope this helps and have an amazing day! ❤
using the graph, determine the equation of the axis of symmetry
Answer:
The axis of symmetry is x=1
Answer:
x = 1
Step-by-step explanation:
(PLEASE HELP) Find the difference of
(p+7)−(6p2+13p).
Answer:
-(6p^2+12p-7)
Step-by-step explanation:
p+7-6p^2-13p
-12p-6p^2+7
-(6p^2+12p-7)
The expression (x^3)(x^-17) is equivalent to x^n. What is the value of n?
Answer:
n = -14
Step-by-step explanation:
when multiplying bases, add their exponents
