Answer:
2 result(s) found
t=2
t=
2
11
=5.500
Step-by-step explanation:
Rearrange:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
2*t^2-(15*t-22)=0
Step by step solution :
STEP
1
:
Equation at the end of step 1
2t2 - (15t - 22) = 0
STEP
2
:
Trying to factor by splitting the middle term
2.1 Factoring 2t2-15t+22
The first term is, 2t2 its coefficient is 2 .
The middle term is, -15t its coefficient is -15 .
The last term, "the constant", is +22
Step-1 : Multiply the coefficient of the first term by the constant 2 • 22 = 44
Step-2 : Find two factors of 44 whose sum equals the coefficient of the middle term, which is -15 .
-44 + -1 = -45
-22 + -2 = -24
-11 + -4 = -15 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -11 and -4
2t2 - 11t - 4t - 22
Step-4 : Add up the first 2 terms, pulling out like factors :
t • (2t-11)
Add up the last 2 terms, pulling out common factors :
2 • (2t-11)
Step-5 : Add up the four terms of step 4 :
(t-2) • (2t-11)
Which is the desired factorization
Equation at the end of step
2
:
(2t - 11) • (t - 2) = 0
STEP
3
:
Theory - Roots of a product
3.1 A product of several terms equals zero.
When a product of two or more terms equals zero, then at least one of the terms must be zero.
We shall now solve each term = 0 separately
In other words, we are going to solve as many equations as there are terms in the product
Any solution of term = 0 solves product = 0 as well.
Solving a Single Variable Equation:
3.2 Solve : 2t-11 = 0
Add 11 to both sides of the equation :
2t = 11
Divide both sides of the equation by 2:
t = 11/2 = 5.500
Solving a Single Variable Equation:
3.3 Solve : t-2 = 0
Add 2 to both sides of the equation :
t = 2
Supplement : Solving Quadratic Equation Directly
Solving 2t2-15t+22 = 0 directly
Earlier we factored this polynomial by splitting the middle term. let us now solve the equation by Completing The Square and by using the Quadratic Formula
Parabola, Finding the Vertex:
4.1 Find the Vertex of y = 2t2-15t+22
Parabolas have a highest or a lowest point called the Vertex . Our parabola opens up and accordingly has a lowest point (AKA absolute minimum) . We know this even before plotting "y" because the coefficient of the first term, 2 , is positive (greater than zero).
Each parabola has a vertical line of symmetry that passes through its vertex. Because of this symmetry, the line of symmetry would, for example, pass through the midpoint of the two x -intercepts (roots or solutions) of the parabola. That is, if the parabola has indeed two real solutions.
Parabolas can model many real life situations, such as the height above ground, of an object thrown upward, after some period of time. The vertex of the parabola can provide us with information, such as the maximum height that object, thrown upwards, can reach. For this reason we want to be able to find the coordinates of the vertex.
For any parabola,At2+Bt+C,the t -coordinate of the vertex is given by -B/(2A) . In our case the t coordinate is 3.7500
Plugging into the parabola formula 3.7500 for t we can calculate the y -coordinate :
y = 2.0 * 3.75 * 3.75 - 15.0 * 3.75 + 22.0
or y = -6.125-0
these 2 questions math 9th thanks! will give brainly!!
Answer:
1) 25+7(n-1)
When the above 'n'(hours) is substituted on the equation, it equals up to the right cost.
2) Given that n represents the no.of bikes, you just plug it in to the equation below.
250+39(n-1)
= 250+39(20-1)
= 250+39*19
= 250+741
= 991
ASAP!!! GOD BLESS u
Answer:6 and 2
Step-by-step explanation:
Answer:
The answer is 6 by 2
Step-by-step explanation:
The perimiter is the total of the sides. So, you have to find out the values of the sides of the rectangle using the number 16. Its a rectangle, and the are is 12. So, you can find that it is 6 & 2.
90 is 12% of what number
Answer:
750
Step-by-step explanation:
Just divide 90 by 0.12 then it gives you 750. If you want to check it you can multiply 750 by 0.12 and it gives you 90. I got 0.12 from 12% since they're the same thing.
Ralph painted 1/6 of a wall in 2/3 hour. At this rate, how many hours will it take Ralph to paint the whole wall?
Answer:
4 hours
Step-by-step explanation:
Let the size of whole wall be x.
Given that
Ralph painted 1/6 of a wall in 2/3 hours
thus, writing it in mathematical form we have,
time taken to pain 1/6 of x = 2/3 hours
=>time taken to pain x/6 wall = 2/3 hours
since, we have taken size as x so to find time to pain x size of wall ,
we divide both side by 6
=>time taken to pain x/6 * 6 wall = 2/3 *6 hours
=> time taken to pain x wall = 4 hours
Thus, It will take 4 hours to paint whole wall
Write the equation y+4+-1 (x-3) in standard form.
Answer:
−x+y+7
Step-by-step explanation:
solve the proportion 20/3 equals something over six piece of correct option 10 23 40 20
Answer:
[4 over x equals 5 over 10]
Solve for x, so you need to isolate/get x by itself in the equation.
Multiply x on both sides
Multiply the inverse of 5/10, which is 10/5, to get rid of the fraction and get x by itself
8 = x
Step-by-step explanation:
(-3x2 + 5x - 2) - 2(x2 - 2x - 1)
If the expression above is rewritten in the form
ar2+bx+c, where a, b, and c are constants, what is
the value of b ?
Answer:
(-3x²+5x-2)-2(x²-2x-1)=
-3x²+5x-2-2x²+4x+2=
-5x²+9x, so b, the coefficient of the x term, is 9.
(a=-5 and c=0)
answered Sep 9, 2019 by Rod Top Rated User (795k points)
Step-by-step explanation:
Value of b will be 9
What is quadratic equation?In algebra , a quadratic equation is any equation that can be rearranged in standard form as ax^2 + b x + c =0 where x represent unknown and a, b and c are constants .
using algebraic functions , solving given equation
-3x^2 + 5x -2 -2x^2 + 4x + 2
-5x^2 + 9x +0 equation 1
now , comparing simplified equation 1 with general quadratic equation (ax^2 +b x +c ), we get
a=-5
b=9
c=0
so, value of b = 9
Lets learn more about quadratic equations
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stream back door by stray kids
Answer:
Okay
Step-by-step explanation:
Answer:
Okay Stay. I will stream it. Nice to meet you. I am Nancy.
B=9+ 1/3qa
solve for a
Step by step please!
Answer:
[tex]a=\frac{3(B-9)}{q}[/tex]
Step-by-step explanation:
Step 1: Write equation
[tex]B=9+\frac{1}{3} qa[/tex]
Step 2: Solve for a
Subtract 9 on both sides: [tex]B-9=\frac{1}{3} qa[/tex]Multiply 3 on both sides: [tex]3(B-9)=qa[/tex]Divide both sides by q: [tex]\frac{3(B-9)}{q} =a[/tex]Rewrite: [tex]a=\frac{3(B-9)}{q}[/tex]When Arianna left her house,her cell phone was 45% charged started losing charge at a constant rate. 4 hours after leaving her house, the battery had 15% remaining battery life. Write an equation for B in terms of t representing the charge remaining in Arianna battery as a percentage t hours after Arianna left her house
Answer:
B = 3.75t
Step-by-step explanation:
Given;
initial charge of Arianna's phone = 45%
the charge remaining in Arianna battery = 15%
If after 4hours of leaving her house, the battery had 15% remaining battery life, then the battery is discharging at the rate of ( 15% / 4hours) 3.75% per hour.
Thus, the charge remaining in Arianna's battery after she left her house is given by;
B = 3.75t
where;
t is time in hours
B is the percentage of charge remaining
Solve the absolute value equation.
(2x – 1) = 15
Answer:
Hello there!^^
Step-by-step explanation:
⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒
Remove the parentheses Add 1 to both sidesSimplify Divide both sides by 2Finally, you simplify again~~~~~~~~~~~~~~~~~~~~~~~~~~~
→ 1. 2x-1=15
→ 2. 2x=15+1
→ 3. 2x=16
→ 4. x = 16/2
→ 5. x = 8
Answer: x = 8
Hence, x would equal to 8 (eight)
Your fellow brainly user: xCherryxUwU
#Thanks!
⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒⭒
Asap, please answer correctly will mark brainliest if correct
Answer:
no solutions
Step-by-step explanation:
-3(x-20)=5-3x
-3x+60=5-3x add 3x to both sides
60=5 not true
no solutions
Answer:
no solution
Step-by-step explanation:
Let's solve your equation step-by-step.
−3(x−20)=5−3x
Step 1: Simplify both sides of the equation.
−3(x−20)=5−3x
(−3)(x)+(−3)(−20)=5+−3x(Distribute)
−3x+60=5+−3x
−3x+60=−3x+5
Step 2: Add 3x to both sides.
−3x+60+3x=−3x+5+3x
60=5
Step 3: Subtract 60 from both sides.
60−60=5−60
0=−55
Use the equation y=3.2x + 5 to fill in the table.
Answer:
Step-by-step explanation:
Answer:yes
Step-by-step explanation:
Tory and her friend Terrence ride their bikes to school each day. On one particular day, Tory started out 5 minutes before Terrence. Tory rides at a rate of 880 feet per minute and Terrence rides at a rate of 1.056 feet per minut
How long had Tory been riding when Terrence caught up with her?
Answer:
4:30 minutes im thinking
Step-by-step explanation:
The value is 30 minutes. Any mathematical statement that includes numbers, variables, and an arithmetic operation between them is known as an expression.
What is meant by expression?Any mathematical statement that includes numbers, variables, and an arithmetic operation between them is known as an expression or algebraic expression. In the expression 4m + 5, for instance, the terms 4m and 5 are separated from the variable m by the arithmetic sign +.
The expression that give us the distance that Tory has ride after t minutes is:
D = 880t
Because Tory rides at 880 feet per minute.
At the same way, the distance that Terrence has ride after t minutes is equal to:
D = 1056(t - 5)
Because Terrence rides at 1056 feet per minute and he starts out 5 minutes after Tory
Now, we need to find t when both expressions are equal, so we can formulate the following equation:
[tex]880t=1056(t-5)[/tex]
So, solving for t, we get:
[tex]880t=1056t - 1056.5[/tex]
[tex]880t=1056t - 5280[/tex]
[tex]880t=1056t =-5280[/tex]
[tex]-176t=-5280[/tex]
[tex]t=-5280/-176[/tex]
[tex]t= 30[/tex]
Therefore the answer is 30 minutes
To learn more about expression refer to:
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Solve for B.
Ax+By=C
What is B equal to?
Answer:
B=C/y−Ax/y
Step-by-step explanation:
Josie runs 3 miles and burns 252 calories. How many calories does she burn in 1 mile?J HELPP PLZ
Answer: 84
Step-by-step explanation: 252 divided by 3 = 84
What is 10,000 + 4,000 + 500 + 8 in standard form?
Answer:
14,508
I hope this helps!
Translate point (2, -1) seven units up. Write the new coordinate as an
ordered pair. help pls!
Answer:
(2,6)
Step-by-step explanation:
Up on a graph is adding to the y-value. (x,y)
x-value = 2
y-value = -1
-1 + 7 = 6
(2,6)
Hope this Helps! :)
Have any questions? Ask below in the comments and I will try my best to answer.
-SGO
20r + 11r + –19r − –4 = –20
Answer:
r=-2
Step-by-step explanation:
First, you need to combine like terms so now you have 12r-(-4)=-20. Then you have to subtract -4 to -20 which equals -24 so now you have 12r=-24. Finally, you divide 12 from both sides and you get r=-2
Answer:
r = -2
Step-by-step explanation:
20r + 11r - 19r + 4 = -20
12r + 4 = -20
subtract 4 from both sides of the equation
12r + 4 - 4 = -20 - 4
12r = -24
divide both sides by 12
12r/12 = -24/12
r = -2
-6x-2y=9 what is the slope
Answer:
[tex]\huge\boxed{m=-3}[/tex]
Step-by-step explanation:
The standard form:
[tex]Ax+By=C[/tex]
The slope-intercept form:
[tex]y=mx+b[/tex]
[tex]m[/tex] - slope
METHOD 1:[tex]m=-\dfrac{A}{B}\\\\-6x-2y=9\to A=-6;\ B=-2\\\\m=-\dfrac{-6}{-2}=-3[/tex]
METHOD 2:[tex]-6x-2y=9[/tex]
convert to the slope intercept form:
[tex]-6x-2y=9\qquad|\txt{add}\ 6x\ \text{to the both sides}\\\\-2y=6x+9\qquad|\text{divide both sides by (-2)}\\\\y=-3x-4.5\to m=-3[/tex]
Consider only the discriminant, b2-4ac, to determine whether one real-number solution, two different real-number solutions, or two
different imaginary-number solutions exist.
4x² - 12x+9=0
A.One real solution
B.Two different imaginary-number solutions
C.Two different real-number solutions
Answer:
A. One real solution
Step-by-step explanation:
The discriminant is used to find the number of real solutions to a quadratic equation.
If the discriminant is greater than 0, there are two real solutions.
If the discriminant is equal to 0, there is one real solution.
If the discriminant is less than 0, there are no real solutions.
All quadratic equations have the format:
ax^2+bx+c
Therefore our values for a, b and c are the following:
a = 4
b = -12
c = 9
Therefore the discriminant is:
(-12)^2-4(4)(9)
144-144 = 0
The discriminant is equal to 0, so there is one real solution (Option A).
Hope this helped!
The ratio of trucks to cars on a freeway is 5 to 8 if there are 440 carson the freeway how many trucks are there?
I’m confused on what the answer is. Can anyone help me and explained it?
Answer: B. 4/5 cups.
Step-by-step explanation:
Ratio number of--> chocolate chips : dozens of cookies made
--> 4 : 5
The question ask for 1 dozen of cookies. In the ratio above, it states for 5 dozens of cookies.
Our new ratio would be:
Chocolate chips: dozens of cookies made
x : 1
we turn the 5 in the right side of ratio by dividing by 5 so we must do the same for other side of ratio by dividing 5 with 4.
x=4/5
hence answer is B. 4/5 cups
...to be honest the question si worded the best but i assume this is what it means.
NEED HELP ASAP WILL GIVE BRAINLY IF CORRECT PLEASE HELP 20 POINTS out
Answer:
It would be -27
Step-by-step explanation:
Math
(1 x 1,000,000) + (7 x 1,000) + (2x1,000) + (9 x 100)
Answer: 1,009,900
Step-by-step explanation:
Answer:
that equals to= 9901.1
Step-by-step explanation:
i added and multiplyed all of that
I need to make these into algebraic expressions or equations:5 less than the product of 10 and c, 14 more than 6 times t, the sum of x and y is 18, A number minus 12 is 17
Answer: more than y :
y + 6
3 times a number:
x ← a number
3x
5 less than the product of 10 and c :
10c ← the product of 10 and c
10c - 5
14 more than 6 times t :
6t ← six times t
6t + 14
The sum of x and y is 18:
x+y ← the sum of x and y
x + y = 18
A number minus 12 is y:
x - a number
x - 12 = y
Answer:
See below
Step-by-step explanation:
Here is translation for you
5 less than the product of 10 and c
-5 + 10*c = 10c - 514 more than 6 times t
+14 + 6*t = 6t + 14The sum of x and y is 18
x + y = 18A number minus 12 is 17
n - 12 = 17This is for IXL
The floor of a round hut has a radius of 2 yards. What is the floor's area?
Use 3.14 for .
Answer:
Step-by-step explanation:
Hey, hope you're having a great day. :)
The floor of the round hut suggests that this is a cylinder, so.
Lets assess the formula.
A = 3.14 x r^2
A = 3.14 x 2^2
A = 3.14 x 4
A = 12.56.
Hope this helps!
*
Find the area of the following square:
15 ft.
Answer:
225
Step-by-step explanation:
The formula is a^2.
Where a is the side
So, 15^2
= 15x15
=225
Someone please help..
Answer:
ITS J because the Mlimeters are suppose to be on the other side
Step-by-step explanation:
TV−→− bisects ∠STU, m∠STV=(14x+8)∘, and m∠UTV=(x+2)∘. Find m∠STU
Answer:
m∠STU is 20°
Step-by-step explanation:
If a ray bisects an angle, then it divides it into two equal angles in measures and the measure of each one is half the measure of this angle
∵ Ray TV bisects ∠STU
→ That means it divides it into two angles STV and UTV
∴ m∠STV = m∠UTV = [tex]\frac{1}{2}[/tex] m∠STU
∵ m∠STV = ([tex]\frac{1}{4}[/tex]x + 8)°
∴ m∠UTV = (x + 2)°
→ Equate them
∴ x + 2 = [tex]\frac{1}{4}[/tex]x + 8
→ Subtract 2 from both sides
∴ x + 2 - 2 = [tex]\frac{1}{4}[/tex]x + 8 - 2
∴ x = [tex]\frac{1}{4}[/tex]x + 6
→ Subtract [tex]\frac{1}{4}[/tex]x from both sides
∴ x - [tex]\frac{1}{4}[/tex]x = [tex]\frac{1}{4}[/tex]x - [tex]\frac{1}{4}[/tex]x + 6
∴ [tex]\frac{3}{4}[/tex]x = 6
→ Divide both sides by [tex]\frac{3}{4}[/tex] to find x
∴ x = 8
→ Substitute the value of x in the measure of any given angle
∵ m∠UTV = 8 + 2 = 10°
∵ m∠UTV = [tex]\frac{1}{2}[/tex] m∠STU
∴ 10° = [tex]\frac{1}{2}[/tex] m∠STU
→ Multiply both sides by 2
∴ 20° = m∠STU
∴ The measure of angle STU is 20°