Answers
Answer:
f(- 2) = 8
Step-by-step explanation:
To evaluate f(- 2) , substitute x = - 2 into f(x) , that is
f(- 2) = 3(- 2)² + (- 2) - 2 = 3(4) - 2 - 2 = 12 - 4 = 8
Related Questions
What is the answer to this equation 3 1/10 -2/3
Answers
Answer:
The answer is 73/30
Step-by-step explanation:
Answer:
73/30 or2.43
Step-by-step explanation:
-4n>24 write a answer as an inequality
Answers
Answer:
n < -6
Step-by-step explanation:
-4n>24
Divide each side by -4, remembering to flip the inequality
-4n/-4 < 24/-4
n < -6
Answer:
n < -6
Step-by-step explanation:
We are given the following equation and asked to solve for n:
-4n > 24Divide both sides by -4 to isolate n by itself, and since we are dividing/multiplying a negative number on both sides, we need to flip the inequality sign:
(-4n)/-4 < 24/-4n < -6Help me plz and thank u
Answers
Answer:
18
Step-by-step explanation:
triangle formula = b x h /2
half of 8/2= 4
9 x 4= 36
36/2= 18
Of the 800 people at a concert, 42% of them were teenagers. How many teenagers were at the concert
Answers
Answer:
336 of them were teenagers
Answer:
There are 336 teenagers at the concert.
Step-by-step explanation:
You are welcome
5/8+1/4 plz help me
Answers
lol please help i literally cannot do math to save my life
Answers
Answer:
[tex]\displaystyle d \approx 3.6[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Reading a Cartesian Plane
Coordinates (x, y)Algebra II
Distance Formula: [tex]\displaystyle d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]Step-by-step explanation:
Step 1: Define
Find points from graph.
Point A(-2, 1)
Point B(1, -1)
Step 2: Find distance d
Simply plug in the 2 coordinates into the distance formula to find distance d
Substitute in points [Distance Formula]: [tex]\displaystyle d = \sqrt{(1+2)^2+(-1-1)^2}[/tex][Distance] [√Radical] (Parenthesis) Add/Subtract: [tex]\displaystyle d = \sqrt{(3)^2+(-2)^2}[/tex][Distance] [√Radical] Evaluate exponents: [tex]\displaystyle d = \sqrt{9+4}[/tex][Distance] [√Radical] Add: [tex]\displaystyle d = \sqrt{13}[/tex][Distance] [√Radical] Evaluate: [tex]\displaystyle d = 3.60555127546[/tex][Distance] Round: [tex]\displaystyle d \approx 3.6[/tex]Answer:
3.6 units
Step-by-step explanation:
Point A --> [tex]x_{1} \\[/tex] = -2 , [tex]y_{1}[/tex] = 1
Point B --> [tex]x_{2}[/tex] = 1 , [tex]y_{2}[/tex] = -1
AB =
[tex]\sqrt{(x_{2} - x_{1})^2 + (y_{2} - y_{1})^2 } \\\sqrt{[1 - (-2)]^2 + [(-1) - 1]^2} \\\sqrt{3^2 + (-2)^2} \\\sqrt{9 + 4} \\ \sqrt{13} \\3.605[/tex]
distance between AB can be rounded to 3.6 units
Hope it helps.
Let's say we have a box with 6 marbles: 3 red, 1 blue, 1 green, and 1 yellow. What is the probability of picking a yellow marble, keep it, and then
picking a blue marble?
A 1/12
B 1/30
C 1/36
D 1/11
Answers
Explanation: First you find the probability of picking a yellow marble, 1/6. Then you multiply the probability of picking a blue marble, 1/5 since there are now only five marbles total. Then multiply those to see what the final probability is, 1/6*1/5=1/30.
Need help fast please with these 5 questions
Answers
Answer:
16.....................................
6⁹*6ⁿ = 6¹²6⁹⁺ⁿ = ¹²9 + n = 12n = 317.....................................
7⁸/7ⁿ = 7³7⁸⁻ⁿ = 7³8 - n = 3n = 518.....................................
15ⁿ = 115ⁿ = 15⁰n = 019.....................................
1/10⁵ = 10ⁿ10⁻⁵ = 10ⁿ-5 = nn = -520.....................................
(8²)ⁿ = 8¹²8²ⁿ = 8¹²2n = 12n = 6Is 17—6x a expression or Equation
Answers
Answer:
expression because an equation has to have a plus +×÷ or divsion sign to be an equation
In a certain country, the true probability of a baby being a boy is 0.519. Among the next nine randomly selected births
in the country, what is the probability that at least one of them is a girl?
Answers
Answer:
0.9973
Step-by-step explanation:
Given :
Probability of girl, probability of success , 1 - p = 1 - 0.519 = 0.481
1 - p = 0.481
n = 9
Probability that atleast one is girl
Usingbthe binomial probability distribution :
P(x =x) = nCx * p^x * (1 - p)^(n - x)
USing the binomial probability calculator :
p(x ≥ 1) = p(x=1) + p(x=2) + p(x=3) + p(x=4) + p(x=5) + p(x=6) + p(x=7) + p(x=8) + p(x=9)
p(x ≥ 1) = 0.9973 ( from calculator).
The radius of a sphere is increasing at a rate of 2 mm/s. How fast is the volume increasing (in mm3/s) when the diameter is 40 mm
Answers
Answer:
[tex]\dfrac{dV}{dt}=502.65\ mm^3/s[/tex]
Step-by-step explanation:
The volume of a sphere is given by :
[tex]V=\dfrac{4}{3}\pi r^3[/tex]
The rate of change of volume means,
[tex]\dfrac{dV}{dt}=\dfrac{d}{dt}(\dfrac{4}{3}\pi r^3)\\\\\dfrac{dV}{dt}=\dfrac{4}{3}\pi \times 3r\times \dfrac{dr}{dt}[/tex]
We have, [tex]\dfrac{dr}{dt}=2\ mm/s\ and\ r=40\ mm[/tex]
So,
[tex]\dfrac{dV}{dt}=\dfrac{4}{3}\pi \times 3\times 20\times 2\\\\=502.65\ mm^3/s[/tex]
So, the volume is increasing at the rate of [tex]502.65\ mm^3/s[/tex].
Can someone please help meeeee I’m desperate
Answers
3=3x
5=98
I’m not sure about the others
Can someone help me with this please
Answers
Answer:
Step-by-step explanation:
As we know, the four angles of the rectangle are 90°.
So, we need to find ∠AEB first.
∠AEB=180-44-90 (∠s sum of Δ)
= 46°
We can then work out x.
x=180-59-46 (adj. ∠s on st. line)
x=75°
Which fraction is equivalent to a repeating decimal? A. 1/8 B. 2/8 C. 14/21 D. 3/10
Answers
Answer:
C
Step-by-step explanation:
14/21 = 2/3 = .666666666666666666666.....7
8x = 60 . What does X equals?
Answers
Answer:
7.5
Step-by-step explanation:
60/8
7.5
x=7.5
Answer:
X= 7.5
Step-by-step explanation:
Please help now due in 25 minutes!!!
Answers
Answer:
y=8x+1
Step-by-step explanation:
The slope is a positive 8 because the line is going upwards. Slope equals rise over run. The rise is 8 units, and the run is 1 positive unit since it is going to the right. So 8/1 is 1. There's a +1 in the equation because the y-intercept is at positive 1. The y-intercept is where the line crosses the y-axis (vertical line). Here, the line crosses it at 1.
please help me find the missing side !
Answers
Answer:
x=14 and y=7
Step-by-step explanation:
This is a 30-60-90 triangle
So in terms of x it would be [tex]x-x\sqrt{3} -2x[/tex]
If across the 60 is [tex]7\sqrt{3}[/tex] then y would be 7 which is across the 30 degrees
And x would be 14 because 2(7)=14
What are the four
parts of axiomatic system?
Answers
An axiomatic system consists of some undefined terms (primitive terms) and a list of statements, called axioms or postulates, concerning the undefined terms. One obtains a mathematical theory by proving new statements, called theorems, using only the axioms (postulates), logic system, and previous theorems.
Hope this helps have a awesome night/day❤️✨
Step-by-step explanation:
PLEASE HELP MEE ITS URGENT
Answers
How many pairs of skis in stock does the shop have to have to make the probability in question 4 less than .01? Round your answer to a whole number
mean=150
Standard Deviation=20
Answers
Answer:
159 hwqb Step-by-step explanation:2n3wq,brudj32nwqrdb3wndj32wsd
A rectangle has a length of (5x+2) and a width of (3x-1) with an area of 308 square units. Find the perimeter
Answers
Answer:
ywg vuwibgwuhydj 3128820400=8
EASY POINTS
PLEASE ANSWER
:)
LOTS OF POINTS!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
A
Step-by-step explanation:
It says the both dimensions are 30%. So, it we do 31 divided by 6, it would be 5 with a remainder of one, which is also equal to 5.1. If we then multiply it by 4, then divide by 9, that would be .03.
Betty made $200 salary plus 5% commission on her sales this week. If she made $275 this week, what
were her total sales this week?
Answers
Answer:
$36.00 i think
Step-by-step explanation:
solve using elimination method. show work -3×+4y=1 -4×+5y=-2
Answers
Answer:
Multiply the first equation by 4 and the second equation by -3:
-12x + 16y = 4
12x - 15y = -6
‣ Add the equations:
‣ Solve for y:
y = -2
‣ Substituting y = -2 into the first equation, we get:
-12x + 16 ⋅ (-2) = 4
‣ Solve for x:
x = -3
‣ Solution:
x = -3, y = -2)
DUDE SORRY My first answer wrong, I'm a bit tired but here you go
A mixture of nuts contains 1 cup of walnuts for every 3 cups of peanuts write a linear equation that represents the relationships between penuts,x, and walnuts,y, Graph the line
Answers
Answer:
surfaces curving inward, so it makes parallel light rays curve outward or diverge. That's why concave lenses are sometimes called diverging lenses. ... The distance from the center of the lens to the focal point is, again, the focal length of the lens.
Step-by-step explanation:
help with this math question pls if i get wrong then a D :(
Answers
Answer:
12
Step-by-step explanation:
Find the areas of all the separate shapes, then add them together.
What are the letters where the y coordinate is bigger than the x?
Answers
Answer:
O, A, T, and I
Step-by-step explanation:
the y coordinate is bigger than the x coordinate
A rectangular prism has a length of 14ft, a height of 8ft, and a width of 15ft. What is
its volume, in cubic ft?
Answers
Answer:
37
Step-by-step explanation:
14 + 8 + 15
Answer: 1680³
Step-by-step explanation:
length x width x height
14 x 15 x 8
HELP HELP 100 POINTS!! Paola was given the equation y= -x + 3. Which of following is an equivalent representation of the equation.
i also need a explanation
Answers
Answer:
no answer choices i cant help
Step-by-step explanation:
moan
Can you pls help meSimplify 6+(-11)
Answers
basically all you're doing here is subtracting 6 from 11. 11-6=5, add the - sign, so the answer is -5