Pls helppp :))
Solve for x by factoring
X^2+4x-21=0
There are multiple answers
Answers
Answer:
[tex]x=3,-7[/tex]
Step-by-step explanation:
We can solve for x by using [tex]\frac{-b\pm\sqrt{b^{2} -4ac} }{2a}[/tex]
By applying this on the quadratic equation, we get:
[tex]x=\frac{-4\pm\sqrt{4^{2}+84} }{2}[/tex]
Which simplifies to:
[tex]x=\frac{-4\pm10}{2}[/tex]
[tex]\therefore x=3,-7[/tex]
Related Questions
i am just going to give points away pls give me brainlyest
Answers
Answer:
Okay will do!!
Step-by-step explanation:
Find the value of x that makes m ∥ n.
Answers
Answer:
x=60
Step-by-step explanation:
X+2x=180degree because it is co interior angle
3x=180
X=180/3
X=60.
Verification
X+2x=180
60+2(60)=180
60+120=180
Alex and Freddy collect stamps. The number of stamps in Alex’s collection is in ratio 3:5 to the number of stamps in Freddy’s collection. If Freddy gives Alex 10 stamps, the ratio will change to 7:9. How many stamps are in both collections together?
Answers
the new ratio is 7 to 9, so we have the equation: (3x+10)/(5x-10)=7/9
9(3x+10)=7(5x-10)
27x+90=35x-70
160=8x
x=20
So Alex has 3*20=60 stamps while Freddy has 5*20=100. Together they have 160
what is the absolute value of -2 and 2
Answers
Answer:
2
Step-by-step explanation:
since absolute value is the length that a number is away from 0, an absolute value can never be negative. 2 and -2 are both 2 spots away from 0.
What is the slope of the line shown below?
Answers
Answer:
y=-1/5x+3 or slope = -1/5
Step-by-step explanation:
What is the equation of the line that passes through the point (5,6) and has a slope of 2 ?
Answers
Answer:
y = 2x - 4
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Here m = 2, thus
y = 2x + c ← is the partial equation
To find c substitute (5, 6) into the partial equation
6 = 10 + c ⇒ c = 6 - 10 = - 4
y = 2x - 4 ← equation of line
What is the value of 6x2 when x = 1.5?
Round to the tenths place
pls help
Answers
Answer:
13.5
Step-by-step explanation:
6 x^2
Let x= 1.5
6 ( 1.5) ^2
6 *2.25
13.5
helpppppp I'll give you brainy est
Answers
Answer:
Put those equations into desmos
Step-by-step explanation:
Describe the nature of the roots for the equation
49x2– 28x +4 = 0
Answers
Answer:
The roots of the equation is real and repeated
Step-by-step explanation:
Here, we want to describe the nature of the roots of the given quadratic equation
To get the nature of the roots, we find the discriminant of the equation
The discriminant is;
b^2 - 4ac
In this case, b = -28 , a = 49 and c = 4
The discriminant is thus;
-28^2 - 4(49)(4)
= 784 - 784 = 0
Since the discriminant is zero, this means that the quadratic equation has real roots which are the same
I'M GIVING BRAINLIEST
I just need help with the equation, you don't have to solve it
Answers
Answer:
OOF
Step-by-step explanation:
Answer: i don't actually know, sorry but i need to get my points so i'm typing this.
Step-by-step explanation: none
What is the gcf of 99 and 54
Answers
Answer:
9
Step-by-step explanation:
The factors of 99 are 99, 33, 11, 9, 3, 1. The common factors of 54 and 99 are 9, 3, 1, intersecting the two sets above. In the intersection factors of 54 ∩ factors of 99 the greatest element is 9. Therefore, the greatest common factor of 54 and 99 is 9.
Hope this helps :)
Can I have brainliest?
Answer:
9
Step-by-step explanation:
9 x 11 = 99
9 x 6 = 54
A cell phone company charges $15 for 100 minutes. What is the cost per minute? Round to the nearest cent.
Answers
Answer:
.15 dollars per minute.
Step-by-step explanation:
Answer:
.15 for one minute to you just had to divide 15÷100
Dissolution of 2Y +9 equals four is
Answers
Answer:
11
Step-by-step explanation:
Find the value of x.
Answers
Answer:
x=95°
Step-by-step explanation:
Hi I need this for Geometry im also posting more questions to this same triangle on my account if you don't mind answering them. Thank you! It would really help since I'm not doing well in this class!
Answers
Answer:
a reflection across line bc
Step-by-step explanation:
maybe, I think so
A point has the coordinates (0, k).
Which reflection of the point will produce an image at the same coordinates, (0, k)?
a reflection of the point across the x-axis
a reflection of the point across the y-axis
a reflection of the point across the line y = x
a reflection of the point across the line y = –x
Answers
Using reflection concepts, it is found that the correct option is:
a reflection of the point across the y-axis---------------
The rule for a reflection of a point across the x-axis is: [tex](x,y) \rightarrow (x,-y)[/tex], thus [tex](0,k) \rightarrow (0,-k)[/tex]The rule for a reflection of a point across the y-axis is: [tex](x,y) \rightarrow (-x,y)[/tex], thus [tex](0,k) \rightarrow (-0,k) = (0,k)[/tex]. This is the correct option.The rule for a reflection of a point across the line y = x is: [tex](x,y) \rightarrow (y,x)[/tex], and thus, [tex](0,k) \rightarrow (k,0)[/tex].The rule for a reflection of a point across the line y = -x is: [tex](x,y) \rightarrow (-y,x)[/tex], and thus, [tex](0,k) \rightarrow (-k,0)[/tex].A similar problem is given at https://brainly.com/question/15196246
Answer:
b
Step-by-step explanation:
the volume of a cube is 125m find it's side
Answers
Answer:
41.6666666667m ( round to nearest whole number if you need to) -> 42m
Step-by-step explanation:
To find the volume
You multiply the length, width, and height. ( V= LxWxH)
So, divide 125 by 3 and you get 41.6666666667.
To check your answer: 41.6666666667 times 3 and you get 125.
I HOPE THIS HELPS YOU!! :)
Which could be the missing first term of the expression that, when fully simplified, would be a binomial with a degree of 4? Select three options.
________ – 5xy3 + 9x2y
0
5xy3
9x2y
8y4
4xy3
Answers
Answer:
Yo The answer is A,C,E or 0, 9x2y, and 4xy3
Step-by-step explanation:
Got it right on Edge. Good luck
Answer: A, C, E
Step-by-step explanation:
Why is 25 a composite number? (1 point)
It is odd.
OIt has more than two factors.
O All of its factors are prime numbers.
It is not divisible by any number except one and itself.
Answers
Answer:
it has more than 2 factor
Answer:
I think its b I'm pretty sure
Trey deposits $8000 into an account that pays simple interest at a rate of 5% per year. How much interest will he be paid in the first 4 years
6
Answers
Answer:
1600
Step-by-step explanation:
You want to calculate the interest on $8000 at 5% interest per year after 4 year(s).
The formula we'll use for this is the simple interest formula, or:
Where:
P is the principal amount, $8000.00.
r is the interest rate, 5% per year, or in decimal form, 5/100=0.05.
t is the time involved, 4....year(s) time periods.
So, t is 4....year time periods.
To find the simple interest, we multiply 8000 × 0.05 × 4 to get that:
The interest is: $1600.00
Usually now, the interest is added onto the principal to figure some new amount after 4 year(s),
or 8000.00 + 1600.00 = 9600.00. For example:
If you borrowed the $8000.00, you would now owe $9600.00
If you loaned someone $8000.00, you would now be due $9600.00
If owned something, like a $8000.00 bond, it would be worth $9600.00 now.
simplify each of the following (5x+4y)(5x-4y) solve
Answers
Simplified :(5x+4y)(5x−4y)
=(5x+4y)(5x+−4y)
=(5x)(5x)+(5x)(−4y)+(4y)(5x)+(4y)(−4y)
=25x2−20xy+20xy−16y2
=25x2−16y2
hope this helps!
Answer:
25x^2-16y^2
Combine the opposite terms in 5x(5x)+5x(4y)-4y(4y)
5x(5x)-4y(4y)
25x^2-16y^2
find the ordered pair for the solution -7x+3y=2
Answers
Answer:
(1, 3 )
Step-by-step explanation:
To find a solution choose a value for x, substitute into the equation and solve for y.
let x = 1 , then
- 7(1) + 3y = 2 , that is
- 7 + 3y = 2 ( add 7 to both sides )
3y = 9 ( divide both sides by 3 )
y = 3
One possible solution is therefore (1, 3 )
Answer:
Step-by-step explanation:
1 3
True or false, there is a decimal point on every whole number. We just don’t usually write it.
Help LOL I have a quiz I would appreciate it
Answers
Answer:
True
Step-by-step explanation:
for example: 5 could also be written as 5.00
Answer:
I think that’s false it should be
Step-by-step explanation:
If not don’t report me plz
Determine the intercepts of the line.
x-intercept(_,_)
y-intercept(_,_)
Answers
Answer:
the x-intercept is (-10, 0) the y-intercept is (-45, 0)
Answer:
X intercept is (-10,0)
Y intercept is (0,-40.5)
Step-by-step explanation:
Hope this helps.
Write an equation in slope-intercept form of the line with a y-intercept of -6 and is parallel to a line that is perpendicular to 5x + 6y - 13 = 0
Answers
Answer:
y= −5/6 x+ 13/ 6
Step-by-step explanation:
I think tis the type of answer your looking for let me know if it's not
Juan's cell phone company charges $35 a month for phone service plus
$0.50 for each text message. How many text messages does Juan send in a
month if his bill was $52?
Answers
Answer:
Juan sends 34 text messages.
Step-by-step explanation:
$52-$35= $17
17 dollars / .50 = 34 messages
what are the best "never have i ever" questions? please give some good ones! (and don't report!!! i'm giving y'all 50 points ❤️) tysm
Answers
Answer:
never have i ever told my best friends boyfriend that she is cheating on him so i could get with him.../
(she was tho)
Step-by-step explanation:
puts finger down
I need help with this question ASAP
Answers
.
Hope this helps :)
what is 1 1/3 x 2/3 in the simplest form?
Answers
Answer:8/9
Step-by-step explanation:4/3 * 2/3=8/9
The simplification of the fraction 1 1/3 x 2/3 in the simplest form will be; 8/9
What is the fundamental principle of multiplication?If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.
We have been given the mixed fraction as;
[tex]1 \dfrac{1}{3} \times \dfrac{2}{3}[/tex]
First, we need to simplify the mixed fraction;
[tex]1 \dfrac{1}{3} =\dfrac{4}{3}[/tex]
Therefore, the product of the fraction will be;
4/3 x 2/3 = 8/9
Hence, the simplification of the fraction 1 1/3 x 2/3 in the simplest form will be; 8/9
Learn more about multiplications;
https://brainly.com/question/14059007
#SPJ2
Are these congruent by SSS, SAS, AAS, ASA?
Answers
Answer:
SAS (Side Angle Side)
Step-by-step explanation:
It is SAS because both triangles are congruent due to 2 congruent sides and one congruent angle, thus being SAS.
