Answer:?
Step-by-step explanation: what am I exactly reading it would better help if you typed it.
Answer:
see explanation
Step-by-step explanation:
Given
5x² - 4 - 8x
To find the zeros equate to zero and rearrange into standard form, that is
5x² - 8x - 4 = 0 ← in standard form
To factor the quadratic
Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.
product = 5 × - 4 = - 20 and sum = - 8
The factors are - 10 and + 2
Use these factors to split the x- term
5x² - 10x + 2x - 4 = 0 ( factor the first/second and third/fourth terms )
5x(x - 2) + 2(x - 2) = 0 ← factor out (x - 2) from each term
(x - 2)(5x + 2) = 0
Equate each factor to zero and solve for x
x - 2 = 0 ⇒ x = 2
5x + 2 = 0 ⇒ 5x = - 2 ⇒ x = - [tex]\frac{2}{5}[/tex]
-----------------------------------------------------------------------------
The sum of the zeros = - [tex]\frac{b}{a}[/tex]
The product of the zeros = [tex]\frac{c}{a}[/tex]
with a = 5, b = - 8 and c = - 4
The sum = 2 - [tex]\frac{2}{5}[/tex] = [tex]\frac{8}{5}[/tex]
and - [tex]\frac{b}{a}[/tex] = - [tex]\frac{-8}{5}[/tex] = [tex]\frac{8}{5}[/tex]
Thus verified
The product = 2 × - [tex]\frac{2}{5}[/tex] = - [tex]\frac{4}{5}[/tex]
and [tex]\frac{c}{a}[/tex] = [tex]\frac{-4}{5}[/tex] = - [tex]\frac{4}{5}[/tex]
Thus verified
Damon has 14 white socks, 6 black socks, and 4 blue socks in his drawer. If he chooses two socks at random, what is the possibility that his first two socks he grabs are white?
Final answer:
To find the probability of Damon choosing two white socks, calculate the probabilities step by step. The probability of Damon picking two white socks is approximately 33%.
Explanation:
To find the probability of Damon choosing two white socks from his drawer, we can calculate it step by step:
Picking the first white sock: 14 white socks out of 24 total socks, so probability = 14/24
Picking the second white sock: 13 white socks left out of 23 total socks, so probability = 13/23
Multiplying the two probabilities together: (14/24) x (13/23) = 91/276, which simplifies to approximately 0.330 or 33%.
What are the excluded values of the function? y= 5/6x-72
Answer:
x = 12 is the excluded value
Step-by-step explanation:
An excluded value is the value/s of x that make the denominator of the rational function equal to zero as this would make the function undefined.
Equate the denominator to zero and solve for x
6x - 72 = 0 ⇒ 6x = 72 ⇒ x = 12 ← excluded value
Answer: x=12
Step-by-step explanation:
Need help to find the zeros for this quadratic equation please thanks
Answer:
x=-1 should be your answer
Answer:
see explanation
Step-by-step explanation:
Given
y = x² + 2x + 1
To find the zeros let y = 0, that is
x² + 2x + 1 = 0 ← x² + 2x + 1 is a perfect square
(x + 1)² = 0
x + 1 = 0 ( subtract 1 from both sides )
x = - 1 with multiplicity 2 ← zero
This indicates that the graph has a minimum turning point at (- 1, 0)
Note from your table
the value for x = - 1 should be y = 0 ( not - 2 )
A bag of pecans costs $3.84. If
each bag contains 40 pecans,
how much would one pecan cost?
Answer:
10.4 cents
Step-by-step explanation:
40 pecans/$3.84 gives you pecans per dollar
simplify 63x83-(6-4)=
The answer would be 5227. If you subtract what is in parenthesis first and then multiply it that should be your answer.
Answer: [tex]5,227[/tex]
Step-by-step explanation:
Given the expression [tex]63*83-(6-4)[/tex] you can simplify it by applying these steps:
First, make the subtraction of the numbers that are inside of the parentheses:
[tex]=63*83-(2)[/tex]
Apply multiplication of signs to eliminate the parentheses. Remember that:
[tex](-)(-)=+\\(+)(+)=+\\(-)(+)=-[/tex]
Then:
[tex]=63*83-2[/tex]
Now, make the multplication indicated:
[tex]=5,229-2[/tex]
Finally, subtract both numbers:
[tex]=5,227[/tex]
The perimeter of a square is less than 20 inches. If s is the side length of the square, which inequality can be used to model the situation?
A. 20 < s + 4
B. 20 < s – 4
C. 4s < 20
D. s ÷ 4 < 20
Help ASAP!
Answer:
C. 4s < 20
Step-by-step explanation:
One side measures s. The perimeter is the sum of the lengths of the 4 sides, so the perimeter is s + s + s + s. Since all side lengths are equal, the perimeter is simply 4s. The perimeter is less than 20 inches, so 4s must be less than 20.
The inequality is
C. 4s < 20
Answer:
The answer is C on Edge 2021
Step-by-step explanation:
C : 4s < 20
Hope this helps!
1/5(15x+15)+5x whats the answer to this problem
Answer:
8x+3
Step-by-step explanation:
Take 1/5 of 15x and 15
Then add 5x
8x+3 is the answer
The product of two consecutive integers is 420. An equation is written in standard form to solve for the smaller integer by factoring
Answer:
X * (X +1) = 420
X^2 + X = 420
X^2 + X -420 = 0
X = 20
Step-by-step explanation:
For this case we have [tex]20 * 21 = 420.[/tex] We must find an equation that allows us to find the smallest value. So:
Let "x" be the variable that represents the smallest number. Thus, "x + 1" represents the consecutive integer. The equation would be given by:
[tex]x * (x + 1) = 420\\x ^ 2 + x = 420\\x ^ 2 + x-420 = 0[/tex]
To factor, we must find two numbers that multiply as a result -420 and sum as a result 1.
These numbers are:
[tex]21, -20\\21-20 = 1\\21 * (-20) = -420[/tex]
Thus, the factorization is:
[tex](x-20) (x + 21) = 0[/tex]
The roots are:
[tex]x = 20\\x = -21[/tex]
Effectively, the smallest integer was found,[tex]x = 20[/tex].
Answeer:
[tex]x ^ 2 + x-420 = 0\\(x-20) (x + 21) = 0[/tex]
Find the value of 7!
Answer:
B. 5040
Step-by-step explanation:
We want to find the value of [tex]7![/tex].
We read [tex]7![/tex] as ''seven factorial''
By definition, [tex]n!=n(n-1)(n-2)...3\cdot2\cdot1[/tex]
We need to find the product of all the positive integers less than or equal to the given number.
This implies that:
[tex]7!=7\times 6\times 5\times 4\times 3\times 2\times 1[/tex]
[tex]7!=5040[/tex]
Graph y = 2/3x
Show me where to put the coordinates. Then choose all answers that are true. If you get it all right I’ll make you helping hand.
A. The equation represents a proportional relationship.
B. The unit rate of change of Y with respect to x is 2/3.
C. The slope of the line is 2/3.
D. A change of three units in X results in a change of two units in Y
E. A change of three units in X results in a change of one unit in Y
D and B because you at the picture
The correct answers are A, B, and C for the given function y = (2/3)x.
What is the slope of the line?The slope of a line is defined as the gradient of the line.
The equation y = (2/3)x represents a line in the coordinate plane, where the x value of a point on the line is multiplied by the constant 2/3 to get the y value of that point.
A. The equation y = (2/3)x represents a proportional relationship because for every change in x by some unit, there is a corresponding change in y by 2/3 times that unit.
B. The unit rate of change of y with respect to x is 2/3. This means that for every unit increase in x, the value of y will increase by 2/3 times that unit.
C. The slope of the line is 2/3. The slope of a line gives you the rate of change of y with respect to x, and in this case, the slope is 2/3.
D. A change of three units in x results in a change of two units in y. Since the unit rate of change of y with respect to x is 2/3, a change of three units in x will result in a change of 2/3 × 3 = 2 units in y.
E. A change of three units in x results in a change of one unit in y is not true, because the unit rate of change of y with respect to x is 2/3, which is different from 1.
Therefore, the correct answers are A, B, and C.
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help me fast i need help a lot :3
the third option
because 1/3 is not equal to three
where as if we replace the x with one in all the other we would find that the equation is correct.
Tonya has a rectangular rug with an area of 21 square feet. The rug is 4 feet longer than it’s width
Answer:
The length of the rug is [tex]7\ ft[/tex]
The width of the rug is [tex]3\ ft[/tex]
Step-by-step explanation:
Let
x----> the length of the rug
y----> the width of the rug
we know that
The area of the rug is
[tex]A=xy[/tex]
[tex]A=21\ ft^{2}[/tex]
so
[tex]21=xy[/tex] -----> equation A
[tex]x=y+4[/tex] -----> equation B
substitute equation B in equation A and solve for y
[tex]21=(y+4)y[/tex]
[tex]y^{2}+4y-21=0[/tex]
Solve the quadratic equation by graphing
The solution is [tex]y=3\ ft[/tex]
see the attached figure
Find the value of x
[tex]x=3+4=7\ ft[/tex]
therefore
The length of the rug is [tex]7\ ft[/tex]
The width of the rug is [tex]3\ ft[/tex]
Suppose you earn $12 each time you mow the lawn. Which function describes the relationship between your total earnings E and the number of times you mow the lawn, m?
E(m) = m + 12
m = 12E
E(m) = m – 12
E(m) = 12m
Answer:
E(m) = 12m
Step-by-step explanation:
Your earnings will be the amount of times you mow the lawn * $12 per job
so if m is the amount of times and 12 is the amount your Earnings(E) = 12m
Please solve!!!!
-x=2-3x+3
-x=2-3x+3
add 3x to both sides
2x=2+3
combine like terms
2x=5
divide by 2
x= 5/2
Answer:
The answer is x = 5/2.
Step-by-step explanation:
Add the like terms which are 3 & 2. Add like variables which would be 3x added to both sides then you get 2x = 5. Divide by 2 on both sides to get x = 5/2.
The freshman Spirit Club took a trip to the state fair. There were 59 students and 6 chaperones, and the total admission cost for the group was $508. Student tickets cost $2 more than chaperone tickets. Write and solve an equation to find the cost of a student ticket. Show your work and explain the meaning of the variable.
Answer:
8.46
Step-by-step explanation:
59+6=65 65 divided by 508= 7.815 (7.82) 6 divided by 508=84.666 (8.67) then subtract 8.67 from 508 = 499.33 divided by 59 = 8.46 thats your answer.
Answer:
$8
Step-by-step explanation:
x=chaperone tickets
59(x+2)+6x=508
59x+118+6x=508
65x+118=508
65x=508
x=6
therefore 6+2=8
There are two slices of pizza left. The original pizza had four slices of equal size. What kind of angles are the two slices together? Select all that apply.
Answer:
I think it’s C
Step-by-step explanation:
The answer would be B, Supplementary Angle, Since half the circle would be 180 degrees also if this isn’t enough information,
3 If OP 9, then AB 2 3 4
2
You know that OA = 4 because the radius of the circle on the left is 4. So, subtract that from OP to find that AP = 5.
Finally, subtract BP, which is 3 because of the circle’s radius. You then find that AB = 2
Answer:
The answer is 2 i think.
Step-by-step explanation:
Which shapes can you use to model the log and the board
Answer:
a cylinder can model a log and a rectangular prism would model a board
Step-by-step explanation:
vocab
Answer:
a cylinder can model a log and a rectangular prism would model a board
Step-by-step explanation:
Over the summer, Manny read 45 books and 15 magazines. The value of the book to magazine ratio is
45:15 =
15:5 =
3:1
Normally, the ratio would be 45:15, but you should simplify like shown above.
The book to magazine ratio of the numbers of books and magazines Manny read over the summer is 3:1.
Explanation:The student's question pertains to finding the ratio of books Manny read over the summer to the magazines he read. Given that Manny read 45 books and 15 magazines, these numbers can be turned into a ratio by placing them over each other (books/magazines). Therefore, the book to magazine ratio would be 45:15. However, this ratio can be simplified by dividing both numbers by their greatest common divisor, which in this case is 15. When both numbers are divided by 15, the simplified book to magazine ratio is 3:1. Hence, for every 3 books Manny reads he also reads 1 magazine.
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what is 2 quarters and one nickel
1 quarter = 25 cents
1 nickel = 5 cents
2 quarters = 25*2 = 50 cents
50 cents + 5 cents = 55 cents, or $0.55
2 quarters and one nickel is 55cents
If Job A pays $8/per hour and you work at most 34 hours and Job B paid $12.50/per hour and you work 10-15 hours and they’re planning on raising the pay to $15/per hour. Which job should you choose?
job a would be the biggest money maker job. $15 an hour working at most 15 hours = $225. $8 an hour working 34 hours = $272. You would make $47 more at job a
Answer:
You should choose Job A.
Step-by-step explanation:
I did the math.
Need answer..... PLZ PLZ PLZ
Answer:
D. Gabrielle is more justified in choosing not to get insurance
Step-by-step explanation:
Gabrielle is more justified in choosing not to get insurance because she is in good heath and haven't had the need to visit a doctor in a long time.
Chances are she'll be fine, at least until he health situation changes.
Juan on the other hand should find a way to afford the insurance, because of his failing health he can't predict his health costs in short term. So, an insurance would be a great thing for him to have, it would at least give him some financial security because chances are his health costs would be higher than his premiums.
On a coordinate plane, how are the locations of the points (-1, -2) and (1, -2) related?
Answer: Reflection
Step-by-step explanation:
Looking at this as a reference they reflect across the y-axis
125.315 to standard form
Answer:
1.25315*102
Step-by-step explanation:
The number 125.315 is already in standard form. This form, also known as scientific notation, simplifies the representation of large or small numbers. However, 125.315 doesn't need this kind of simplification.
Explanation:The number 125.315 is already in standard form. In Mathematics, standard form, also known as scientific notation, refers to expressing a number as a number between 1 and 10 multiplied by a power of 10. The purpose is to simplify the representation of very large or very small numbers. For instance, 2000 would be written as 2 x 10^3 in scientific notation. However, 125.315 is not a large enough number that needs to be simplified in such a manner.
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Determine whether the triangles are similar, if so what is a similarity statement in the postulate or theorem used?
Answer:
It is the secon option ∆TRS ≈ ∆TPQ ; SAS
Step-by-step explanation: angle t is equal to angle t because it is the same angle
line TR divided by line TP is equal to line TS divided by TQ
Answer: The correct option is
[tex](B)~\triangle TRS\sim \triangle TPQ,~SAS\sim.[/tex]
Step-by-step explanation: We are given to check whether the triangles in the figure are similar or not. If so, we are to state the similarity statement.
From the figure, we note that
in the triangles TPQ and TRS, we have
[tex]TP=42,~TQ=28,TR=42+6=48,~~TS=28+4=32.[/tex]
Therefore, the ratios of the corresponding sides of two triangles are
[tex]\dfrac{TP}{TR}=\dfrac{42}{48}=\dfrac{7}{8},\\\\\\\dfrac{TQ}{TS}=\dfrac{28}{32}=\dfrac{7}{8}.[/tex]
Now, in ΔTPQ and ΔTRS, we have
[tex]\dfrac{TP}{TR}=\dfrac{TQ}{TS},\\\\\\m\angle TPQ=m\angle TRS~~~\textup{[common angle]}[/tex]
So, triangles TPQ and TRS are similar by SAS proportionality postulate.
Thus, the correct option is
[tex](B)~\triangle TRS\sim \triangle TPQ,~SAS\sim.[/tex]
Three cars are driving on a racetrack. The mean speed of the three cars is 100 miles per hour. Car X drives 101 miles per hour and Car Y drives 116 miles per hour. Use the mean to estimate the speed of Car Z. Then find the actual speed of Car Z.
Answer:
Less than 100. Z=83
Step-by-step explanation:
The mean is the average found by adding the sum of the data points and dividing by the number of them. Here there are 3 cars whose speeds are 101, 116, and Z or unknown. The mean of them is 100. Solve for Z.
100 =(101+116+Z)/3
300=217+Z
83=Z
Find y. Do not round your answer.
Please Need Help Badly!!
Answer:
y = 11.2 in
Step-by-step explanation:
Given a tangent and a secant from an external point to a circle, then
The square of the measure of the tangent is equal to the product of the external part and the entire secant, that is
5(5 + y) = 9²
25 + 5y = 81 ( subtract 25 from both sides )
5y = 56 ( divide both sides by 5 )
y = 11.2
Answer: y = 11.2
Step-by-step explanation:
Write a rule for the linear function in the table.
Answer:
Step-by-step explanation:
The general form of a linear function is ax + b.
f(x) = ax + b
f(1) = a + b = -7
f(2) = 2a + b = -10
So using a system of equations we solve for 'a' and 'b'.
a + b = -7 | 2a + b = -10
We multiply the first one by -1.
-a - b = 7 | 2a + b = -10
And then we solve the system by elimination(by adding the equations):
a = -3
Solving for b: a + b = -7 <=> -3 +b = -7 => b = -4
So the general rule of the function is:
f(x) = -3x - 4
Sasha borrows $100 at 12% simple interest, to be paid back in 3 months. How much does she have to pay back
Answer:
$136.00
Step-by-step explanation:
100 + 12 +12 + 12
simple interest is only against the loan itself
compound interest is the loan plus interest . . .then that sum . . .again then that some
Marie is purchasing a $105,000 home with a 30 year mortgage at 5.25%. What’s her monthly principal and interest payment?
A. $414.73
B. $503.23
C. $556.09
D. $579.81
Answer:
Her monthly principal payment is D: $579.81 and monthly interest payment is 0.4375.
Step-by-step explanation:
Ok, in order to calculate the monthly principal and interest payment, we can use this relatively simple equation. The equation is:
[tex]M=P\frac{r(1+r)^{n} }{((1+r)^{n}-1) }[/tex]
Where variables represent the following:
M is your monthly payment.
P is your principal.
r is your monthly interest rate, calculated by dividing your annual interest rate by 12.
n is your number of payments (the number of months you will be paying the loan throughout the 30 years)
Then, in this case:
M=?
P=$105,000
5.25%=5.25/100=0.0525, then [tex]r=\frac{0.0525}{12} =0.004375[/tex]
[tex]n=12*30=360[/tex]
So, [tex]M=105,000\frac{0.004375(1+(0.004375))^{360} }{((1+(0.004375))^{360}-1)}[/tex] $
Solving this,
[tex]M=105,000\frac{0.004375(1.004375))^{360} }{((1.004375))^{360}-1)}[/tex] $
[tex]M=105,000\frac{0.004375(4.8141) }{((4.8141))-1)}[/tex] $
[tex]M=105,000\frac{0.02106 }{3.8142}[/tex] $
[tex]M=105,000(0.005522)/tex] $
[tex]M=579.81[/tex] $
Her monthly principal payment is $579.81.
Answer: $579.81 APEX