f(x) = -3x2 + 3x + 7
Find f(8)
Answers
Answer:
f(8) = -161
Step-by-step explanation:
f(x) = -3x^2 + 3x + 7
f(8) = -3(8)^2 + 3(8) + 7
f(8) = -192 + 24 + 7
f(8) = -161
Related Questions
A school administrator surveyed high school sophomores about their expectations for college attendance. One question asked was: "What do you think the chances are that you will graduate from college?" Their responses are shown below in the two-way table by gender.
Answers
The percentage of males in the distribution is 46% and it represents the marginal distribution of males in the population.
To obtain the percentage of males out of the total respondent ; we use the relation ;
Number of males / total number of respondents
Number of males = (31 + 34 + 64 + 109 + 75) = 313
Number of females = (22 + 70 + 70 + 112 + 98) = 372
Total number of respondents = (number of males + number of females) = (313 + 372) = 685
Percentage of males = (313 / 685) × 100% = 45.69% = 46%
This percentage represents the marginal distribution of males as it is the percentage of just one of the random variables.
If the percentage represents more than one such that one variable depends on the other, then it would have represented a conditional distribution.
https://brainly.com/question/15765264
What is answer to 3+2•5•8
Answers
hey please help i’ll give brain
Answers
Answer:
First, the dropdown is 9. Second, put in 9. The answer is 81.
Step-by-step explanation:
10* what equals 90? Well, let's do 90/10, our answer is 9. Then We are given 1 nine or 9 to put on the second slot. Our answer would be 90-9, or 81. Khan Academy is teaching you how to multiply.
Answer:
[tex]9 \times 9 = 10nines - 1nine \\ 9 \times 9 = 90 - 9 \\ 9 \times 9 = 81 \\ than \: you[/tex]
Is (1, 10) a solution to this system of inequalities?
y > X + 9
y > 10
Answers
Explanation:
I think the x value is 1
But however I don’t think the solution is (1, 10) because the y value is bigger than as can be seen in one of the equation that is written y > 10 so y can be 11, 12, 13,.....
Answer:
No
Step-by-step explanation:
If (1, 10) is a solution to the system then it must satisfy both inequalities.
Using x = 1 and y = 10 , then
10 > 1 + 9 , that is
10 > 10 ← False
and
10 > 10 ← False
Neither of the inequalities are satisfied by (1, 10)
Thus it is not a solution
Frances earns $9.25 an hour at his part-time job. Last week he worked 16 hours.
What was his gross pay for the week?
Answers
Answer:
$148
Step-by-step explanation:
$9.25 x 16 hours = $148
The perimeter of a rectangle is 36 feet. The length is 2 feet more than 3 times the width. What are the dimensions of the rectangle?
Answers
Answer:
Step-by-step explanation:
The perimeter (P) of a rectangle is equal to the sum of twice the length and twice the width.
For this problem, let x be the width.
Then because the length is 2 less than 3 times the width
The length is 3x - 2
Therefore, P = 2x + (2)(3x - 2) = 36
Solving this for x gives:
2x + 6x - 4 = 36
8x - 4 = 36
8x = 40
x = 5
Therefore, the width = x = 5 feet
And the length = 3x - 2 = (3)(5) - 2 = 13 feet
Can someone solve/walk me through this problem please?
-6x+5y=34
-6x-10y=4
Answers
Answer: x = -4
y = 2
Step-by-step explanation:
From equation I
-6x + 5y = 34
-6x = 34-5y
-(-6x) = -(34-5y)
or, 6x = 5y-34
or, x = 5y-34/6
so
substituting the value in equation II
-6x-10y = 4
or, -6{(5y-34)/6} - 10y = 4
or, -(5y-34)-10y = 4
or, -5y + 34-10y = 4
or, -15y = -30
or, y = -30/(-15)
so, y = 30/15
so, y = 2
now
x = (5y-34)/6
= (5*2-34)/6
= (10-34)/6
= -24/6
= -4
Answer:
x=-4, y=2
Step-by-step explanation:
-6x-10y=4
-6x=4+10y
(4+10y)+5y=34
15y=30
y=2
-6x-10(2)=4
-6x=24
x=-4
calculate the surface area of a cylinder with diameter 26,5 and height 63,7
Answers
Answer:
A≈1633.63
Step-by-step explanation:
d Diameter 26
h heigth 7
A=2πd
2h+2π(d
2)2=2·π·26
2·7+2·π·(26
2)2≈1633.62818
write each expression as a single power of 10
Answers
Answer:
10 to the power of 4
Step-by-step explanation:
[tex](10^{5} )^{2} \\= 10^{10} \\\\(10^{2})^3\\= 10^(6)\\\\[/tex]
You then subtract the powers since you are dividing by the same base exponent of 10.
10 - 6 = 4
10^4
Hey, I need help with solving this inequality. It is for Introductory Algebra (0308) TSI Review. I need to pass the TSI which is 20 to 45 questions long and I have failed it in the past a total of four times, please help me to understand this: -4<4-2x<6
Thanks So Much!
Answers
This one is a little tricky, but easy once you split it into a couple of parts!
So you have your whole inequality:
-4<4-2x<6
Let’s break it into two parts right down the middle. This just makes it way easier to solve! Start with -4<4-2x
Now, solve for “x” in that simple inequality. Remember that the inequality acts just like an equal sign, except for when you divide or multiply by a negative number! Then you have to flip it around.
-4<4-2x
Subtract 4 from each side
-8<-2x
Now, divide by -2 on both sides to get x by itself. Remember you are dividing by a negative in this case, so you have to flip the inequality around once you finish!
4>x
You can rewrite that as x<4 (it means the same thing :)
Now, let’s do the other half of this inequality. We’re doing the same thing, just the other side!
4-2x<6
Solve for x! Subtract 4 from each side
-2x<2
Get x by itself by dividing by -2 on both sides. Remember to flip the inequality since it’s negative!
X>-1
Ok! You’ve solved both parts of this, now it’s time to piece it all together.
You know x is less than 4 based on the first step, but greater than negative one based on the second step! Therefore, you write:
-1
I hope this makes sense! If you have any questions, please let me know!
One day Dillan worked from 8:00 AM to 1:00 PM, took a break for lunch, and then
worked from 1:30 PM to 6:00 PM. How many total hours did he work?
2
9.5 hours
8 hours
9 hours
8.5 hours
Answers
Answer:
Dillan worked for a total of 9.5 hours.
Step-by-step explanation:
8:00am to 1:00pm is a total of 5 hours,
1:30 to 6pm is a total of 4.5 hours, So 5+4.5= 9.5
Write the conjugate of the following complex
number:
-6i
Answers
Answer:
[tex]6i[/tex]
Step-by-step explanation:
We want to write the conjugate of the complex number:
[tex]-6i[/tex]
Recall that the conjugate of a complex number in the form a + bi is a - bi, and vice versa.
We can rewrite our complex number as:
[tex]\displaystyle 0 - 6i[/tex]
Hence, a = 0 and b = 6.
Then its conjugate will be:
[tex]0 + 6i = 6i[/tex]
Find the line segment
Answers
Answer:
[tex]l \: is \: mid \: point \: here \: so \\ 9x - 16 = 7x + 10 \\ x \: terms \: togather \\ 9x - 7x = 10 + 16 \\ 2x = 26 \\ x = \frac{26}{2} \\ x = 13 \\ option \: (3) \\ thank \: you[/tex]
Half the difference of a number n and 20 is 30. What is the number?
Answers
Answer:
80Step-by-step explanation:
Half the difference of a number n and 20 ⇒ (n - 20)/2... is 30 ⇒ = 30Solve the equation for n:
(n - 20)/2 = 30n - 20 = 30*2n - 20 = 60n = 60 + 20n = 80The number is 80
Answer:
Number is 40
Step-by-step explanation:
Let the number be n
(n - 20)/2 = 30
(n - 20) = 2 × 30
n = (2 × 30) + 20
n = 60 + 20
n = 80
See photo for question
Answers
Answer:
66 = ∠JKN
Step-by-step explanation:
∠JKM = 99
∠LKM = 66
KN bisects means middle point divides into two equal parts
so first lets find ∠LKN and ∠NKM
66/2 = ∠LKN and ∠NKM each
33 = ∠LKN
33 = ∠NKM
so if we add ∠JKL + ∠LKN + ∠NKM = 99
∠JKL + ∠LKN + ∠NKM = 99
∠JKL + 33 + 33 = 99
∠JKL + 66 = 99
∠JKL = 99-66
∠JKL = 33
now to find ∠JKN we must add
∠JKL + ∠LKN = ∠JKN
33 + 33 = ∠JKN
66 = ∠JKN
From the graph of the function, determine the domain and the range.
Domain: (-4,4) Range: (-3, 0]
Domain: (-4, -2] Range: (-1,0)
Domain: (-4, -2] Range: (-3,0)
Domain: (-4, 3] Range: (1, 0)
Answers
Hey there! :)
Domain is the set of all x-values while Range is the set of all y-values!
When we want to find the domain of functiom through graph, we can do by finding the left point first and then the right point in x-plane or horizontal line.
The left point is (-4,0) and the right point is (4,0)
Since both points are opened, we use ( and ) instead.
Hence, the domain is (-4,4)
Next is finding range. Range is similar to Domain but y-value. You can find the range by finding the minimum point first then maximum point in y-plane or vertical line.
From the graph, minimum point is (-1,-3) and maximum point is (-4,0),(1,0) and (4,0)
Remember that we use the y-coordinate point for range! The minimum point and maximum point (1,0) both are closed dot. Since they are closed dot, we use [ or ].
Therefore, the range is [-3,0]
In conclusion, the answer is first choice.
Let me know if you have any questions!
Topic: Functions / Domain & Range
Divide. Write your answer as a decimal.
−3.45÷(−15)=
Answers
please solve, hurry if you can
Answers
Answer:
x = -7
Step-by-step explanation:
3(x+8)=3
3x+24 = 3
-24 -24
3x = -21
3x -21
3 3
x = -7
Answer:
Fill the boxes with x & 8
See the image.
Which of the following describes a linear function?
A. 3(x + 2y) - 4 = x + 5y
B. ax2 + bx + c = 0
c. (a + b)?
D. A = ?
Answers
Answer:
A
Step-by-step explanation:
Linear equation involves two variables with the power of 1. B is quadratic equation
C and D are not even equations
PLEASE HELP I WILL MARK BRAINIEST IF THE ANSWER IS CORRECT!!!!!!!!
6. In triangle ABC, the length of side AB is 12 inches and the length of side BC is 20 inches Which of the following could be the length
of side AC?
A. 6 inches
B. 34 inches
C. 18 inches
D 37 inches
Answers
Answer:
C
Step-by-step explanation:
In this situation the two lowest sides, 12 and 18, add to higher than the longest side. This is the only answer that does so.
Please help me asap
Answers
Find the perimeter, in units, of the polygon with the given vertices. Plot the points.
Round to the nearest tenth.
5. A(8,0), B(-3, 2), C(10, 2)
6. A(4, -3), B(7, 10), C(-8, 2)
7. A(-5,5), B(5, -5), C(-5, -5)
8. A(4, -3), B(7,10), C(-8, 2), D(-1, -5)
9. A(-4, -8), B(4, -8), C(4, 0), D(0, 3), E(-4, 0)
Answers
Answer: 9
Step-by-step explanation:
Plot the points
Find the distance of each side
add the three numbers
9
Answer:
5. 27
6. 43
7. 47
Step-by-step explanation:
f(a)=(a+2)^2
g(a)=5a+4
g(f(-2))
Evaluate g(f(-2)) = ???
Answers
Answer:
-2gf
Step-by-step explanation:
Solve this function problem plzzzz
Answers
Answer:
[tex]{ \bf{h( - 2) = \sqrt{ - 2} + \frac{1}{2} ( - 2) }} \\ \\ = i \sqrt{2} + - 1[/tex]
[tex]{ \bf{h(0) = \sqrt{0} + \frac{1}{2} \times 0}} \\ \\ = 0[/tex]
[tex]{ \bf{h(4) = \sqrt{4} + \frac{1}{2} \times 4}} \\ = 2 + 2 \\ = 4[/tex]
yooo cuhh's is the square root of 64 a rational or irrational . ( and is it natural or a real number
Answers
Answer:
Step-by-step explanation:
It's an integer (which includes the minus number).
It can be a natural number (if the value of an expression comes to +/- 8 and for some reason - 8 is not permitted because it's a length)
It is for certain a real number.
Andrew bought four bottles of lemonade and two bottles of water for €2.45. From the same shop Michael
bought two bottles of lemonade and four bottles of water for €2.35. What is the total cost of one bottle of
lemonade and one bottle of water?
Answers
Answer:
0.8 euro
Step-by-step explanation:
Suppose the price of bottle of lemonade is x, when the bottle of water costs y.
Four bottles of lemonade cost 4x, two bottles of water cost 2y
4x+2y=2.45
Two bottles of lemonade cost 2x, four bottles of water cost 4y
2x+4y= 2.35
These equations( 4x+2y=2.45 and 2x+4y= 2.35) are simultaneous, so
multiply the first one by -2
-8x-4y=-4.9
-8x-4y+2x+4y= -4.9+2.35
-6x=-2.55
x=0.425 euro - the cost of bottle of lemonade
y=(2.45-4*0.425)/2
y=0.375 euro - the cost of bottle of water
0.425+0.375= 0.8 euro - the total cost of one bottle of
lemonade and one bottle of water
Answer:
price of lenonade bottle is 0.425
price of water bottle is 0.375
Step-by-step explanation:
In explaination, 'x' is the value of lemonade bottle and 'y' is the value of water bottle.
All explaination is in picture below.
Marking brainliest
What else can I write for my last bullet
Answers
if 0 subtracted from a number the difference is the
Answers
If 0 is subtracted from any number, then the result is the Number itself.
Example :-
25 - 0 = 2510 - 0 = 101 - 0 = 115 - 0 = 15Find the value of unknown side
Answers
Answer:
hope this helps you
have a great day
-a - 2b + 3c for a = 24, b= 7, and c=5
Answers
Answer:
-23
Step-by-step explanation:
Plug in each value for its respective variable.
-(24) - 2(7) + 3(5)
-24 - 14 + 15
= -23
Answer:
-23
Step-by-step explanation:
Plug in each value for its respective variable.
-(24) - 2(7) + 3(5)