Hi. Please i need help with this . No jokes . I need help with (vii) and (ix)
9514 1404 393
Answer:
(vii) 25/4
(ix) -61/6
Step-by-step explanation:
(vii) Once again, we remind you that for ax²+bx+c=0, ...
α+β = -b/a = -(-7/2) = 7/2 = 3.5
αβ = c/a = -3/2 = -1.5
Then the desired expression is ...
α/(β+1) +β/(α+1) = (α² +α +β² +β)/((α+1)(β+1))
= ((α+β)² -2αβ +(α+β))/(αβ +(α+β) +1)
= (3.5² -2(-1.5) +3.5)/(-1.5 +3.5 +1) = 18.75/3 = 6.25 = 25/4
__
(ix) α/β +β/α = (α²+β²)/(αβ)
= ((α+β)² -2αβ)/(αβ) = (3.5² -2(-1.5))/-1.5 = 15.25/-1.5 = -61/6
ASAP HELP NOW FOR BRAINLIEST
Answer: 18 miles per hour
Step-by-step explanation: The equation shows the slope as 18. This means that the unit rate per hour (t = number of hours) is 18/1.
how do i do this- my brain has ✨evaporated✨
Answer:
lol
Step-by-step explanation:
im not even sure try using google
You have enough inventory ($3,000,000) to last 30 days for the current orders being processed. However, a new order came in today, which has to be fulfilled in 15 days. This new order will deplete your inventory completely by that time. How much money in inventory must be ordered to last the month?
Answer:
Picture Below
Step-by-step explanation:
Help
award: Brainliest
Answer:3.51
Step-by-step explanation:
Which is a qualitative graph?
Step-by-step explanation:
Qualitative graphs are graphs that are used to represent situations that do not necessarily have numerical values. Qualitative graphs represent the essential elements of a situation in a graphical form. For example, Graph A could represent a car that is accelerating at a constant rate.
Therefore, the "Second graph" is the qualitative graph.
Learn more:
brainly.com/question/17146063
The Smith family took out a $160,000 loan. After 30 years they had paid a total of 364000. What is the interest rate on the loan? Can someone pls answer this in an hour using the equation Interest= principal x rate x time.
Answer:
The interest rate is 0.0425%
Step-by-step explanation:
Mathematically;
I = PRT/100
From the question, I in this context is the difference between how much they have paid and the amount borrowed
Mathematically, this is ; 364,000-160,000 = 204,000
This is the interest
R is the rate = ?
T = 30 years
P is the amount borrowed = 160,000
thus, we have
204,000 = (160,000 * R * 30)/100
2040 = 4800000R
R = 2040/4800000
R = 0.000425 which is 0.0425%
If x - 5 = 2, then find the
value of 6x - 20?
Answer:
22Step-by-step explanation:
[tex]x-5=2\qquad|\text{add 5 to both sides}\\\\x-5+5=2+5\\\\x=7\\\\\text{Substitute to}\ 6x-20:\\\\6\cdot7-20=42-20=22[/tex]
start fraction 5.2 over 3.5 end fraction equals start fraction y over 7.5 end fraction
A. 7.25
B. 11.14
C. 5.05
D. 2.43
Answer:
A
jk its D hope this helps
Simplify (4x – 6) + (5x + 1).
Answer:
4x-6+5x+1
9x-5
Step-by-step explanation:
Answer:
9x-5
Step-by-step explanation:
like terms are added together, in this case, x
a man is twice as old as his son.Five years ago the ratio of their ages was 9:4.Find the sum of their ages
Let's assume the sons age as x.
Age of the man is 2x
Five years ago,
The man's age=9x
The sons age=4x
Then find the equation.
hope it was helpful.
I am not solving all cuz that u understand how to frame a equation.
laura has 160 pounds of green beans at her vegetable stand. she sells 10 pounds of green beans every hour, what is the percent decrease in green beans after 3 hours?
Answer:
laura has 160 pounds of green beans at her vegetable stand. she sells 10 pounds of green beans every hour, what is the percent decrease in green beans after 3 hours?Step-by-step explanation:
Answer:
g
Step-by-step explanation:
Identify all values in the five number summary and create a box plot for the data set below.
You can upload your 5 number summary and box plot in the last question or provide a link to your work in the text box.
14, 13, 16,16, 18, 20, 22, 19, 23, 24, 24, 26, 27, 28, 30, 32
Answer:
12345
Step-by-step explanation:
give me a brainliest plees
Answer:
you can create your box plot from the following answers
a) minimum = 13
b) first quartile = 17
c) median = 22.5
d) third quartile = 26.5
e) maximum = 32
e) interquartile range = 26.5 - 17 = 9.5
Step-by-step explanation:
minimum and maximum values are self-explanatory
first quartile is derived by getting the median of the lower half of data (the median will divide the data into the lower half and the upper half)
third quartile is derived by getting the median of the upper half of data
the median is sometimes referred to as the second quartile
box plots are all about quartiles so that you can see where 25% of the data reside, or 50% or 75%, etc
help pls!!!!!!!!!!!!!
The percentages, from left to right, are:
1) 56.25%
2) 18.75%
3) 18.75%
4) 6.25%
How to get the percentages?In this case, the 100% is 16.
We know that there are 9 individuals with black fur and black eyes, so we can write the equations:
100% = 16
X% = 9
We want to find the percentage X%. By combining these equations we get:
X% = (9/16)*100% = 56.25%
Now we can use the same equations for the other genotypes.
There are 3 units with black fur and red eyes, here the percentage is:
p = (3/16)*100% = 18.75%
There are 3 units with white fur and black eyes, so the percentage is:
p = (3/16)*100% = 18.75%
There is 1 unit with white fur and red eyes, so the percentage is:
p = (1/16)*100% = 6.25%
If you want to learn more about percentages:
https://brainly.com/question/843074
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the difference of two variables x and y is 7. find two ordered pairs that satisty this equation if the values of y are 1 and 3... Show your solution
Answer:
The ordered pairs that are solution to this equation are:
(8,1) and (10,3)
Step-by-step explanation:
Given statement is:
"difference of two variables x and y is 7"
This can be mathematically written as:
[tex]x-y = 7[/tex]
To solve this we have to put y = 1 and y = 3
Now,
Putting y = 1 in the equation
[tex]x-1 = 7\\x = 8[/tex]
Putting y = 3 in the equation
[tex]x-3 = 7\\x = 7+3\\x = 10[/tex]
Ordered pairs are of the form (x,y)
Hence,
The ordered pairs that are solution to this equation are:
(8,1) and (10,3)
Can anyone help me with this
Answer:
Yes I can help you :)
Step-by-step explanation:
The solution of absolute value equation I x - 4 | =6 is...
What is the answer to this smart people answer this show work pls who knows this already
Answer:
10 units
Step-by-step explanation:
LMNO is a square.
All sides of square are equal
MN = LM
3x + 1 = x + 7
3x - x = 7 - 1
2x = 6
x = 6/2
x = 3
LM = x + 7 = 3 + 7 = 10
LM = 10 units
Giving brainliest to whoever answers first:)
Solve the equation 2 3 x -1 5 x = x - 1.
Answer:
Step-by-step explanation:
23x-15x=x-1
8x=x-1
7x=1
x=1/7
Plz help I will give your brainliest
At a concession stand 6 hot dogs cost $6.72. At this rate, how much would 8 hot dogs cost, in dollar sand cents?
Answer:
$8.96
Step-by-step explanation:
Sorry if its to late
Consider the equation: 6x + 55 = x 2 power
1. Rewrite the equation by completing the square. Your equation should look like (x + c)² = dor (2-c)2 = d. 1. 2) What are the solutions to the equation? Choose 1 answer:
A. x=-3+_8
B. x=3+_8
C. x=-8+_3
D. x= 8+_3
Answer:
a
Step-by-step explanation:
Answer:
Im pretty sure its d its defenantly NOT A
Step-by-step explanation:
what is a term called that has no variable? constant or coefficient
Answer: It is constant
Answer:
Constant.
Step-by-step explanation:
Constants are any number that does not have a variable such as x or y, so if they do not have variables, there definitely would not have coefficients. Examples of constants are 2, 5 and 67.
Coefficients are like the 2 in 2x, the 5 in 5y and the 67 in 67xy. All of these numbers have a variable.
(Giving Brainlyst)
Awnser this with the letter and fraction listed
EX. H- 2/3
Thanks!
Answer:
C-7/8
R-8/9
P-61/66
L-11/18
I-3/4
A-7/12
O-47/55
H-29/40
S-28/33
T-4/5
M-11/12
E-71/84
U-13/42
N-19/20
I swear to god if I don’t get brainliest I’m going to lose it I haven’t done this math in like four years and it kinda took a while.... but I hope it helped u ☺️☺️☺️❤️❤️❤️❤️
Step-by-step explanation:
Answer:
I-9/12 or 3/4
T- 8/10 or 4/5
C- 7/8
A- 7/12
M- 11/12
R- 7/9
O- 36/55
E- 71/84
P- 61/66
H- 29/40
U- 13/42
L- 11/18
S- 28/33
N- 19/20
Step-by-step explanation:
if any are wrong, just lmk and i'll see what I did. But, i'm pretty sure they're right
Estimate the quotient: 1628 ÷ 8
Answer:
203.5
Step-by-step explanation:
Please mark brainliest.
Answer:
Answer is: 203.5
Step-by-step explanation:
Hope this helped YOU! :)
A line segment on a graph has endpoints of (-3,1) and (3,1). It is translated 5 units down
and then, reflected across the x-axis.
What are the endpoints after the series of transformations?
Answer:
(-3,4) (3,4)
Step-by-step explanation:
Down means you are dealing with the y value of the pair of points. It also means that you are going into negative territory.
(-3 ,1 -5) and (3, 1-5)
New point
(-3 , - 4) and (3,-4)
Now if you reflect this point across the x axis, you are still changing the y value. You will go from - 4 to + 4
(-3,4) (3,4) <<<<< answer
Randeep purchased sandwiches and a gallon of milk for himself and his friends. Each sandwich cost $8. The gallon of milk cost $4. The total cost of the meal was $44. Which answer choice represents and solves correctly the equation for x, the number of sandwiches that Randeep purchased? DON'T FORGET THE NUMBER OF SANDWICHES RANDEEP MUST BUY TO REACH $44.
Answer: He bought 5 sandwiches.
Step-by-step explanation:
We know that he purchased sandwiches (let's suppose that he bought X ) and one gallon of milk.
The cost of each sandwich is $8, then the cost of the X sandwiches will be X times $8, or: X*$8.
The cost of the gallon of milk is $4.
The total cost will be:
$4 + X*$8.
And we know that the total cost was $44, then we have the equation:
$4 + X*$8 = $44
We can solve this for X
X*$8 = $44 - $4
X*$8 = $40
X = $40/$8 = 5
This means that he bought 5 sandwiches
Use the quadratic model y = −4x2 − 3x + 4 to predict y if x equals 5.
Answer:
-111
Step-by-step explanation:
substitute 5 in place of each x
-4(5)^2 - 3(5) + 4
then evaluate or type it into your calculator
-100 - 15 + 4
Answer:
It is -111
Step-by-step explanation:
Hope this helped have an amazing day!
Find the midpoint of segment PQ.
Answer:
[tex](2,0)[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Midpoint Formula: [tex](\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})[/tex]Step-by-step explanation:
Step 1: Define
Find endpoints from graph.
Point P (-4, 6)
Point Q (8, -6)
Step 2: Find Midpoint
Simply plug in your coordinates into the midpoint formula to find midpoint .
Substitute [MF]: [tex](\frac{-4+8}{2},\frac{6-6}{2})[/tex]Add/Subtract: [tex](\frac{4}{2},\frac{0}{2})[/tex]Divide: [tex](2,0)[/tex]The points (6, -3) and (7, -10) fall on a particular line. What is its equation in point-slope form? Use one of the specified points in your equation. Write your answer using integers, proper fractions, and improper fractions. Simplify all fractions.
Answer:
Step-by-step explanation:
Given the coordinate points (6, -3) and (7, -10), we are to find the equation of a line passing through this two points;
The standard equation of a line is y = mx+c
m is the slope
c is the intercept
Get the slope;
m = Δy/Δx = y2-y1/x2-x1
m = -10-(-3)/7-6
m = -10+3/1
m = -7
Get the intercept;
Substitute the point (6, -3) and m = -7 into the expression y = mx+c
-3 = -7(6)+c
-3 = -42 + c
c = -3 + 42
c = 39
Get the required equation by substituting m = -7 and c= 39 into the equation y = mx+c
y = -7x + 39
Hence the required equation is y = -7x + 39