Answer:
-2
Step-by-step explanation:
f(t) = t^2 – 2t – 2
To find f(0), replace t with 0 in the expression and evaluate the expression.
f(0) = 0^2 – 2(0) – 2
f(0) = -2
0 = t
We know this because 0 replaced t in the parenthesis next to F !
The question is just asking you to plug in 0 where ever t is!
Let's do it
[tex]f(0) = 0^{2} - 2(0) - 2[/tex]
solve
[tex]0^{2} = 0 \\2 ( 0 ) = 0[/tex]
so, this is what we have left!
[tex]f(0) = 0 - 0 - 2[/tex]
We have our answer!
[tex]f (0) = -2[/tex]
HELPPPPP
Which of the following are roots of the polynomial function below?
Check all that apply.
F(x) = x^3 -3x²+2
The roots of the polynomial function f(x) = x³ - 3x² + 2 are [tex]\frac{2-\sqrt{12} }{2}, \frac{2+\sqrt{12} }{2}, \ and \ 1[/tex].
What are the roots of the polynomial function?Given the polynomial function in the question:
f(x) = x³ - 3x² + 2
To find the roots of the polynomial function f(x) = x³ - 3x² + 2, we need to solve for values of x that make the function equal to zero.
f(x) = x³ - 3x² + 2
x³ - 3x² + 2 = 0
Factor the equation using the rational root test:
( x - 1 )( x² - 2x - 2 ) = 0
Equate each factor zero and solve for x:
( x - 1 ) = 0
x - 1 = 0
x = 1
( x² - 2x - 2 ) = 0
x² - 2x - 2 = 0
Using the quadratic formula:
[tex]x = \frac{-b\±\sqrt{b^2 - 4(ac)} }{2a} \\\\x = \frac{-(-2)\±\sqrt{(-2)^2 - 4(1*-2)} }{2*1} \\\\x = \frac{2\±\sqrt{4 + 8} }{2} \\\\x = \frac{2\±\sqrt{12} }{2}\\\\Hence:\\\\x = \frac{2-\sqrt{12} }{2}, \frac{2+\sqrt{12} }{2}[/tex]
Therefore, the roots are [tex]x = \frac{2-\sqrt{12} }{2}, \frac{2+\sqrt{12} }{2}, 1[/tex].
Options A, B and D are the correct answers.
Learn more about quadratic equations here: brainly.com/question/1863222
#SPJ1
Kevin mowed 12 laws and earned a total of $60 which represents the amounts of money earned per lawn
Answer:
$5 per lawn
Step-by-step explanation:
60 divided by 12 = 5
Tim and Lizzy are going camping. Tim has x amount of marshmallows for making stores. Lizzy has 6 times as many marshmallows as Tim.
What expression represents how many marshmallows Lizzy has?
x - 6
6/x
6x
6 + x
I NEED THIS ASAP PLEASEEEE!
Answer:
......................
PLEASE HELP ME I NEED THIS ALOT!
1 . Write the equation that represents the data set for Crew A using the variables E for earnings and h for hours.
2. Write the equation that represents the data set for Crew B using the variables E for earnings and h for hours.
Please help i'm really stuck on these questions!! :(
1. Write the equation that represents the data set for Crew A using the variables E for earnings and h for hours.
120e/1h
2. Write the equation that represents the data set for Crew B using the variables E for earnings and h for hours.
105e/1h
Please help! Almost done! thx
Answer:
c^2 = a^2 + b^2 - 2ab cos(C)
Step-by-step explanation:
The angle at A is named A, the angle at B is named B, and the angle at C is named C
The graph shown represents a system of equations used to solve a polynomial inequality. If the polynomial expression must be greater than 50, which represents the solution set of the inequality? (–7, 0) U (2, ∞) (–7, –5.94) U (–2.469, 3.409) (–5.94, –2.469) U (3.409, ∞) (–5.94, –2.469) U (2, ∞)
Answer:c
Step-by-step explanation:
Answer:
C forsure i just did it just trying to help
Step-by-step explanation:
Can someone tell me the answer?
Answer:
5
Step-by-step explanation:
16÷3=5r1. Hope this helps
Which is the minimum or maximum value of the given function?
Answer:
its b for the both of them
PLEASE HELP! EASY MATH! GIVING BRAINLIEST!
Molly is painting a model house and needs to know how much paint she will need. She knows the surface area of the prism is 216 square inches and the surface area of the pyramid is 84 square inches.
1. Which surface is shared by the two solids? What are the dimensions of this surface?
2.There is another surface that Molly does not need to paint, because it wont show when she displays the model house. Describe that surface, and explain why it doesn't need to be painted.
3. To find the area Molly needs to paint, she should add the surface areas of both solids and subtract. Choose the correct answer.
A. twice the area of the triangle
B. twice the area of the square
C. three times the area of the square
D. the area of the square.
4. Find the area Molly needs to paint.
Part 1) The surface that is shared by the two solids is the top of the cube that is the same that the square base of the pyramid
Part 2) The dimensions of this surface are 6 in x 6 in
Part 3) Molly needs to paint 228 square inches
Step-by-step explanation:
The picture of the question in the attached figure
Part 1) Which surface is shared by the two solids?
we know that
The surface that is shared by the two solids is the top of the cube that is the same that the square base of the pyramid
Part 2) What are the dimensions of this surface?
The surface is a square with side length 6 inches
so
The dimensions of this surface are 6 in x 6 in
Part 3) what is the area molly needs to paint?
we know that
The area that Molly needs to paint is equal to the surface area of the cube plus the surface area of the pyramid minus two times the area of the surface that is shared by the two solids
so
therefore
Molly needs to paint 228 square inches
i hope this helps you
Consider the line y=-2/7x-7
and the point is (-7,-4) what would the perpendicular line be and the parallel be
Answer:
a) The equation of line perpendicular to above line and passes through point (-7,-4) is [tex]\mathbf{y=\frac{7}{2}x+\frac{41}{2}}[/tex]
b) The equation of line parallel to above line and passes through point (-7,-4) is [tex]\mathbf{y=-\frac{2}{7}x-6}[/tex]
Step-by-step explanation:
We are given the line: [tex]y=-\frac{2}{7}x-7[/tex]
The slope of the above equation is: [tex]m=-\frac{2}{7}[/tex] (By comparing with general form [tex]y=mx+b[/tex] where m is slope)
a) Find equation of line perpendicular to above line and passes through point (-7,-4)
If two lines are perpendicular there slopes are opposite reciprocal i.e [tex]m_1=-\frac{1}{m_2}[/tex]
The slope of new line will be: [tex]m = \frac{7}{2}[/tex]
Now finding y-intercept using slope and point (-7,-4)
[tex]y=mx+b\\-4=\frac{7}{2}(-7)+b \\-4=\frac{-49}{2}+b \\b=-4+\frac{49}{2}\\b=\frac{-8+49}{2}\\b=\frac{41}{2}[/tex]
So, the equation of line perpendicular to above line and passes through point (-7,-4) will be:
[tex]y=mx+b\\y=\frac{7}{2}x+\frac{41}{2}[/tex]
So, the equation of line perpendicular to above line and passes through point (-7,-4) is [tex]\mathbf{y=\frac{7}{2}x+\frac{41}{2}}[/tex]
b) Find equation of line parallel to above line and passes through point (-7,-4)
If two lines are parallel there slopes are same i.e [tex]m_1=m_2[/tex]
The slope of new line will be: [tex]m = -\frac{2}{7}[/tex]
Now finding y-intercept using slope and point (-7,-4)
[tex]y=mx+b\\-4=-\frac{2}{7}(-7)+b \\-4=-2(-1)+b\\-4=+2+b \\b=-4-2\\b=-6[/tex]
So, the equation of line parallel to above line and passes through point (-7,-4) will be:
[tex]y=mx+b\\y=-\frac{2}{7}x-6[/tex]
So, the equation of line parallel to above line and passes through point (-7,-4) is [tex]\mathbf{y=-\frac{2}{7}x-6}[/tex]
if each value of the data of the poplation function is doubled which of the following is not correct?
A. the mean is doubled
B. the mode is doubled
C. the variance is doubled
D. the median is doubled
Answer:
The variance is doubled; C
Step-by-step explanation:
Here, we want to select what will be wrong if every number in the dataset is doubled
A. This is correct
The mean is the average of the numbers which is calculated by dividing the sum of the numbers by the count of the numbers
By doubling the numbers, we have simply doubled the sum while the count is same
So what we have as the result of the division will be 2 times what we had initially making the mean doubled
B. The mode is doubled
Yes, this is correct
The mode is the highest in frequency
Doubling all numbers will not double their frequencies but their values. So the number that was the mode in the previous case will be the same but now doubled
D. The median is doubled
This is correct
The median deals with the middle number.
Since all numbers are doubled in the present case, the median to is also doubled along side as the numbers are now twice what they were evenly
C. This is wrong
The variance has to do with the spread of data
We are actually subtracting values
Since we are doubling across board, the difference between the numbers is the same as this, the variance cannot change
We can look at this from the angle that all others are measures of central tendency looking at having a central figure while the variance is a measure of spread.
Mario makes 6 free throw shots out of his first 10 attempts.
Answer;
he missed 4 of his shots
Step-by-step explanation:
1. Which of the following linear equations has a negative slope? Circle all that apply. A. y = 2x – 5 B. y = 4– 7x C. y=-3 D. X = -1 E. y=-5/4x+2 F. y=1/2x-2
Answer:
C) y= -3, D) x= -1, E y= -5/4x +2
Step-by-step explanation:
Math people I’ll make brianliest
[tex]y=3x[/tex]
The input is classified as x term
The output is classified as y term.
If the input is -4 then
Substitute x = -4 in y = 3x
[tex]y=3(-4)\\y=-12[/tex]
Therefore, the answer is -12 aka the first choice.
Can someone please help?!
PLS HALP- Fill in the blanks-sometimes-always-or never-
-Irrational numbers can be expressed by ratio of 2 integers (sometimes-always-or never)
-If a number is a whole number, it is also rational (sometimes-always-or never)
-Rational numbers are also integers (sometimes-always-or never)
-Non-perfect squares are irrational (sometimes-always-or never)
Pls answer correctly ty
Answer:
I think they are all always.
Step-by-step explanation:
They are called rational because they are the ratio, or quotient, of two integers
numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.
If a square root is not a perfect square, then it is considered an irrational number. These numbers cannot be written as a fraction because the decimal does not end and does not repeat a pattern.
Well heck,how come, to me this looks like collage level stuff please help me? My cousin isn’t awake enough and he usually helps me and I don’t wanna wake him up,just help me till he wakes up. Try to answer correctly please,if you don’t know then please scroll past ok? I need to get this right so my mom can think I’m “perfect”
Answer:
Step-by-step explanation:
i=prt
your p=30 dollars
rate is 10%
t=1 year
i=(30*0.01*1)=3
3 dollars
whats the slope (1,8) and (4,6)
Answer:
-2/3
Step-by-step explanation:
Write a linear function f with the values f(−1)=5 and f(3)=4.
Answer:
f(x)=-0.25x+4.75
Step-by-step explanation:
-0.25x+4.75
-0.25(-1)+4.75=5
-0.25(3)+4.75=4
Hope this helps!
La Sra.Elena y el Sr.Eulalio,abortan taxis diferentes de la misma empresa el costo del servicio es un importe fijo de salida (banderazo) mas otra cantidad por los kilometros recorridos.Si la SraElena paga $190 por recorrer 8 km y el Sr Eulalio paga $130 por correr 5 km calcular el costo de banderazo y el costo por kilometro recorrido
Answer:
$ 30
$ 20
Step-by-step explanation:
Sea el costo fijo xy el costo por km sea y suponiendo que es el mismo para ambos taxis.
De la pregunta obtenemos las dos ecuaciones
[tex]x+8y=190\quad ...(i)[/tex]
[tex]x+5y=130\quad ...(ii)[/tex]
Aplicando [tex](i)-(ii)[/tex]
[tex]8y-5y=190-130\\\Rightarrow 3y=60\\\Rightarrow y=\dfrac{60}{3}\\\Rightarrow y=20[/tex]
Sustituyendo en [tex](ii)[/tex]
[tex]x+5y=130\\\Rightarrow x+5\times 20=130\\\Rightarrow x=130-100\\\Rightarrow x=30[/tex]
Entonces, el costo fijo es de $ 30 y el costo por km es de $ 20.
Plz hurry I will give 17 points
their notes to help them process the
The editing and formatting features of eNotes allow students to blank
information.
The answers are organize,translate,increase,misplace
Answer:
Organize
Step-by-step explanation:
four and seventy-two thousandths
Answer:
4.072
Step-by-step explanation:
Answer:
72,004Step-by-step explanation:
Brainliest? Thanks!
Asap anwer plssssss!!! Ed can ride 30km on the bicycle in the same time it takes him to walk 14km. If his riding rate is 10kph faster than his walking rate, what is his walking rate
Answer: 8.75
Step-by-step explanation:
Let walking rate = x
Riding rate = x + 10
Time taken to ride 30km = time taken to walk 14 km
Time = distance / speed
Hence,
30/ (x + 10) = 14 / x
Cross multiply :
30x = 14( x + 10)
30x = 14x + 140
30x - 14x = 140
16x = 140
x = 140 / 16
x = 8.75
Walking rate = 8.75 kph
Which expression gives the correct volume of the steps?
Math item stem image
CLEAR CHECK
4×4×1 cubic feet
(4×4×1)+(3×3×3) cubic feet
(4×4×1)+(3×3×1)+(2×2×1)+(1×1×1) cubic feet
(4×4×4)+(3×3×3)+(2×2×2)+(1×1×1) cubic feet
Answer:
(4×4×4)(3×3×3)(1×1×1) Cubic feet
Solve the inequality n divided by -3 + 8 > 6.
Answer:
n<30
Step-by-step explanation:
have a great day
Are these triangles similar? If yes, by what?
SSS, SAS, or AA?
The cost of toilet paper increased by 50% after the "Great Toilet Paper Shortage" of 2020.
If toilet paper cost $6.50 before the shortage, how much did it cost after the shortage?
Answer:
I think 9.25
Step-by-step explanation:
Answer:
9 dollar
Step-by-step explanation:
it is now 9 dollar because the increase was 3.00
A case of canned dog food has 12 cans. Each can has 12.5 ounces of food. If Synceer’s dog eats 18 ounces of canned dog food a day, how many days will a case of canned dog food last?
Answer:
8 Days with 6 ounces of Dog Food left Over
Step-by-step explanation:
12 Cans per Case x 12.5 ounces per can = 150 Ounces Total
150 Ounces/18 ounces per day= 8.3333333333333 Days
.3333333333333 Days x 18 ounces = 6 remaining ounces.
What is the slope of the line that passes through the points listed in the table.
It should be easy I’m just not smart.
Answer:
this answer will be b
Step-by-step explanation:
A customer purchased a total of 10 hats and scarves. Each hat cost $4.50 and each scarf cost $3.00. The customer spent $36.00 all together.
How many hats did the customer buy?
Enter your answer in the box.
Answer:
The customer bought 4 hats, and 6 scarves.
Step-by-step explanation:
$4.50x4 = $18
$3.00x6 = $18
$18 + $18 = $36!
Please mark "Brainliest"!?
- Pricespidey