Answer:
[tex]x=-3\pm\sqrt{5}[/tex]
General Formulas and Concepts:
Pre-Alg
Order of Operations: BPEMDASAlg I
Standard Form: ax² + bx + c = 0Quadratic Formula: [tex]x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}[/tex]Step-by-step explanation:
Step 1: Define
x² + 6x + 4 = 0
a = 1
b = 6
c = 4
Step 2: Find x
Substitute: [tex]x=\frac{-6\pm\sqrt{6^2-4(1)(4)} }{2(1)}[/tex]Evaluate: [tex]x=\frac{-6\pm\sqrt{36-4(1)(4)} }{2(1)}[/tex]Multiply: [tex]x=\frac{-6\pm\sqrt{36-16} }{2}[/tex]Subtract: [tex]x=\frac{-6\pm\sqrt{20} }{2}[/tex]Simplify: [tex]x=\frac{-6\pm2\sqrt{5} }{2}[/tex]Factor: [tex]x=\frac{2(-3\pm\sqrt{5}) }{2}[/tex]Simplify: [tex]x=-3\pm\sqrt{5}[/tex]What's the answer help pls
Answer:
48°
Step-by-step explanation:
The m in front of the angle notation refers to the measure of the angle labeled A, B and C (with vertex at B)
Two Angles are Supplementary when they add up to 180 degrees.
HENCE,
∠A + ∠B =180 (given)
⇒4x - 16 +8x + 4 = 180°
⇒12x - 12 = 180°
⇒12x = 192
⇒x = 16 ----1
substituting eq1 in ∠A,
=> 4(16) -16
=> 64 - 16
=> ∠A = 48°
Answer:
48
Step-by-step explanation:
The definition of supplementary means that the two angles add up to 180. so you set both expressions up to where they add to 180. like this
4x-16+8x+4=180
combine like terms
12x-12=180
12x=192
divide to get x
x=16.
You need the measure of angle A so you plug it back in
4(16)-16
64-16
48 is the measure of angle A, and since these angles are supplementary, that means angle B is 132
Find the slope of the line that passes through the given two points:
(1.4) and (3,7)
m =
Please help me don’t use this for Free answers
Answer: 3/2
Step-by-step explanation: slope is 3/2, I calculated it with the slope formula
the graph of a linear equation in two variables is _____?
Answer:
"a straight line"
Step-by-step explanation:
recall that a linear equation may be expressed as
y = mx + b, where x and y are the variables (i.e 2 variables)
we also know that if we graph the linear equation y = mx+b, we will get a straight line.
Hence a possible answer for the blank could be:
"a straight line"
ax = bc - c solve for x
Answer:
X = c - b/a
Step-by-step explanation:
Answer:
x=bc/a - c/a
You simplify it like you would any equation, only difference is it does not have numbers.
The regular octagon shown is divided into 8 congruent triangles. Each triangle has an area of 2.17 square centimeters. The perimeter of the octagon is 48 centimeters. What is the length of each side of the octagon?
Answer:
The length of each side of the Octagon is 6 centimeters
Step-by-step explanation:
An Octagon is an 8 sided polygon
The perimeter of the octagon can be obtained by the addition of all the sides of the octagon
Since it is a regular octagon, it means that all the sides are of equal length
Mathematically, what this mean is that the perimeter of the Octagon is simply 8s
where s is the length of the side of the Octagon
Thus, mathematically, the length of each side of the Octagon will be 48/8 = 6 centimeters
Answer:
180 cm2
Step-by-step explanation:
In school the ratio of the number of pupils to the number of teachers is 20:1 of the number of pupils is 840 how many teachers are there
Answer:
Step-by-step explanation:
Given ration of pupils and teachers =20:1
Let the no. Of teachers =X
So no.of pupils =20X
No.of pupils=840
20X=840
X=840/20
X=42
No.of teacher =X
=42.
8.01 × 10^-2 round the coefficient to two decimal places
Answer:
that equals 0.0801
Step-by-step explanation:
but im not good at rounding so yeah
Can a right triangle have sides of 12, 16, and 20?
Sydney cabs charge $3.60 Flag Fall plus $2.19 per km. (a) write down an equation to calculate the cost ,C, of cab fare for a distance of kilometers. (b) use your equation to calculate the cost of cab fare for a distance of 15 km
Answer:
C=2.19km+3.60
Step-by-step explanation:
If you traveled 15 km it would cost 36.45.
Have a nice night! (^-^)
Find the area of the triangle.
The area of the triangle is square units.
Answer: Um, where is your picture to answer to this question? Please show me this picture to answer the question!
Step-by-step explanation:
Answer:
Step-by-step explanation:
Please your question is Incomplete please edit the question
Find the x-intercept and y-intercept
from the following linear equation:
D x + 4y = -56
x-intercept ([?],[]).
y-intercept (I):[])
Step-by-step explanation:
x intercept is when y = 0 and y intercept is when x = 0 hence, x intercept is : x = -56 hence (-56, 0) and y intercept is: 4y = -56 y = -14 hence (0, -14)
Topic: coordinate geometry
If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!
Plz I'm sooooo confuzzled: If you reflect any shape across the x-axis and then across the y-axis, do you get the same result that you would if you rotated it 180° about the origin? What does that mean?
Answer:
the answer is true
Step-by-step explanation:
If the shape is in the upper left quadrant then you reflect it across the x-axis it would be in the lower left quadrant, next you reflect across the y-axis it would be in the lower right quadrant, finally, if you rotate it 180 degrees it would be where it started.
Answer:
it's correct because even though rotating 90° is not the same as reflecting about the y-axis, when you reflect again about the x-axis, it becomes the same as reflecting an additional 90°.
so reflecting about y and then about x is the same as rotating 180°.
Step-by-step explanation:
if you reflect (x, y) in 180° it becomes (-x,-y)
when you reflect about the y-axis, (x,y) becomes (-x,y).
when you reflect again about the x-axis, (-x,y) becomes (-x,-y) which is the same as the 180°
What is 3z + 2 when z = 2?
The value of the given equation is 8.
Given that,
The value of z = 2.calculation is as follows:= 3z + 2
= 3(2) + 2
= 6 + 2
= 8
Find out more information about the equation here:https://brainly.com/question/2263981?referrer=searchResults
Given:
3z + 2 and z = 2
To find:
value=?
Solution:
Therefore,
[tex]\to 3z + 2 \\\\\because \\\\\to z = 2\\[/tex]
putting the value of z into the above-given equation then:
[tex]\to 3(2)+2\\\\\to 6+2\\\\\to 8[/tex]
The final answer is "8".
Find out more information about solving here:
brainly.com/question/21197151
Please answer my question is you know???
Answer:
8
Step-by-step explanation:
you just need to count the number of squares
Answer:
The area is 8.
Step-by-step explanation:
Count the amount of squares to determine the area. MARK ME BRAINLIEST!!
PLEASE HELP ASAP 50 POINTS ONLY ANSWER IF YOU ARE 100% SURE IT'S CORRECT
On a coordinate plane, two parabolas open up. The solid-line parabola, labeled f of x, goes through (negative 2, 4), has a vertex at (0, 0), and goes through (2, 4). The dashed-line parabola, labeled g of x, goes through (3, 6), has a vertex at (5, 2), and goes through (7, 6).
What is the equation of the translated function, g(x), if
f(x) = x2?
A: g(x) = (x + 5)2 + 2
B: g(x) = (x + 2)2 + 5
C: g(x) = (x – 2)2 + 5
D: g(x) = (x – 5)2 + 2
Answer:
D
Step-by-step explanation:
Option 4.
The vertex form of a parabola is
where, a is a constant (h,k) is the vertex.
The given function is
The vertex of the function is (0,0) and it goes through (-2, 4) and (2, 4).
It is given that the vertex of function g(x) is at (5,2).
Substitute h=5 and k=2 in the equation.
g(x) is passed through (3, 6).
Divide both sides by 4.
Substitute a=1 in equation (2).
The function g(x) is g(x) =(x-2)2+5) .
Therefore, the correct option is 4.
hope this helps
Answer:
D
Step-by-step explanation:
Please help, I think it’s 30 but I’m not sure. You will get 23 points
Answer:
Option E = $170
Step-by-step explanation:
Since it's not his money, its not profit for the owner. If he had not stolen the money the man would have had his $100 in the cash register and $70 more for whoever buys the bag.
Answer:
I think your right! like idek how the hell that would be wrong-
Step-by-step explanation:
is the following relationship non-proportional? or proportional? (please give me an explanation!!)
Which pair of radicals is a pair of like radicals
what do u call girl giving away 100 points and nothing to do?
Answer:
i dont know but thanks for the points
Step-by-step explanation:
You but a new laptop for 300 . The sales tax is 6% .what is the total cost for the laptop including the sales tax
Answer:
The total cost for the laptop including the sales tax is, $318
Step-by-step explanation:
Answer:
$318
Step-by-step explanation:
You start with your $300. Then you multiply that by 6% or 0.06 to get 18, which is the sales tax. Then you add those 2 together
Is 46 a number in the sequence generated by 5n + 1
Answer:
231
Step-by-step explanation:
5.46+1
230+1
231
answer this?
Answer:
yes
Step-by-step explanation:
Equate 5n + 1 and 46 to find n, that is
5n + 1 = 46 ( subtract 1 from both sides )
5n = 45 ( divide both sides by 5 )
n = 9
Thus 46 is the ninth term in the sequence
Una cesta de frutas tiene 888 plátanos, 333 naranjas, 555 manzanas y 666 kiwis.
For cada 333 kiwis hay 444 \_\_\_\_____\_, \_, \_, \_.
Escoge 1 respuesta:
Escoge 1 respuesta:
Answer:
plátanos
Step-by-step explanation:
si por cada 666 kiwis hay 888 plátanos, divides todo por 2, y te da 333 kiwis ⇒ 444 plátanos
Martin traveled at an average rate of 40 miles per hour for the first half of his trip. For the second half of his trip, he traveled at a rate of 60 miles per hour. How far did he travel in the 4-hour trip?
Answer:
Total distance traveled = 200 miles
Step-by-step explanation:
Total time taken for the trip = 4 hours
∴ The trip can be divided into two halves of 2 hours each.
1st half:
speed = 40 miles per hour
distance = speed × time
when time = 2 hours
distance = 40 × 2 = 80 miles
2nd half:
distance = speed × time
speed = 60 miles per hour
time = 2 hours
∴ distance = 60 × 2 = 120 miles
Combined distance traveled = 80 + 120 = 200 miles
The midpoint of a segment with endpoint (8,a) and (b,4) is (-1,-1)
What’s the value of a and b
Answer choices is
A. 10 b. 6
A.6 b.10
A. -6 b. -10
A. -10 b.-6
Answer:
(-10,-6)
Step-by-step explanation:
(8 + b) / 2 = - 1
(8 + b) = - 1 * 2
8 + b = - 2
b+8-8 = -2 - 8
b = - 10
=====================
(a + 4)/2 = -1
(a + 4) = - 2
a + 4 = -2
a + 4-4 = - 2 - 4
a = - 6
I need helppp!!!! pleaseeee
Answer:
A or B I think
Step-by-step explanation:
Not entirely sure of it but ummm
Classify the following triangle. Check all that apply.
O A. Obtuse
B. Equilateral
c. Right
D. Acute
O E. Scalene
OF. Isosceles
Answer:
This is an Equilateral Acute triangle.
Estimate the area of the figure. Each square represents 2 units^2.
Answer:
60 units²Step-by-step explanation:
Approximate area is about 50 units²
The closest option is the last one
A map has a scale of 1 inch = 20 miles. The distance on a map between two cities is 3 1/4 inches. How far apart are the two cities?
Which equation represents a line that passes through (–9, –3) and has a slope of –6?
Answer:
y=-6x-57
Step-by-step explanation:
point slop form:
y+3=-6 times (x+9)
kenya found that 6 out of 9 students in her class have sports practice today. Based on the results , how many of the 270 students in the school have practice today