x^2+2x-8=0 complete the square
Answers
Answer:
it should be x=2 or x=--4
Related Questions
cleo can paint a room in 8 hours. while phil can paint the same room in 6 hours. if they paint the room together. how long will it take them to paint the room?
Answers
Answer:
its a fraction so it would be 3 3/7
Step-by-step explanation:
Working together, it will take Cleo and Phil 3
__
3
7
hours to paint the room.
Let x represent the number of hours it will take to paint the room while working together.
__x
8
1 __x
6
5 1
24( __x
8
1 __x
6
) 5 24(1)
3x 1 4x 5 24
7x 5 24
x 5 ___
24
7
or 3__
3
7
At a local restaurant the amount of time that customers have to wait for their food is normally distributed with a mean of 26 minutes and a standard deviation of 3 minutes what percentage of customers have to wait less than 28 minutes to the nearest tenth
Answers
Answer:http://avconline.avc.edu/jdisbrow/ma115/Practice%20Test%203%20with%20answers.pdf
Step-by-step explanation:
you welcome
how many triangles u can see on this picture
Answers
Worth 25 points! Urgent help needed! Help Please!
x/x+3 + x+2/x+5
View attachment!
Answers
Answer
Its the first one i think because thats what you wrote unless you need to simpify it then look at the picture and use it to help
Eight avocados cost $4.
How much do 16 avocados cost?
How much do 20 avocados cost? $10 because it’s 0.50 per avocado
How much do 9 avocados cost?
Answers
Answer:
If each avocado costs 0.50, then 16 avocados would cost $8.00, 9 avocados would cost $4.50
Hope this helps! :)
answer answer answer answer
Answers
Find the measure of x in the right triangle.
X
21
2
Answers
Answer:
I'm not sure if this is the right answer b/c ur question is too vague but the answer is x = 67
Step-by-step explanation:
x + 21 + 2 = 90
x + 23 = 90
- 23 - 23
x = 67
x - 3/2 < -3
how do i solve this
Answers
Answer:
x<-3/2
Step-by-step explanation:
x-3/2<-3
Change its sign and move constant to the right hand side. Like this: x<-3+3/2
Calculate the sum. Like this: x<-3/2
So the answer is x<-3/2
pls help me answer this (multiple choice)
Answers
Answer:
Option 3, 18.0
Step-by-step explanation:
To find the Hypotenuse of a right triangle, use the Pythagoras theorem:
[tex]a^{2} +b^{2} =c^{2}[/tex]
(see image below)
(the longest side of any right △ is always C)
In this equation, we know A is 10 and B is 15, so plug in these numbers and solve for C
[tex]10^{2} +15^{2} =c^{2}[/tex]
[tex]100 + 225 =c^{2}[/tex]
[tex]325 = c^{2}[/tex]
Now that the equation is simplified, we find the square root of 325 to solve for C.
[tex]\sqrt{325 = c^{2}}[/tex]
[tex]18.0 = c[/tex]
The final answer is C = 18.0
Hope this helps you understand :)
Convert the exponential to a logarithmic form: 104 = 10,000
Question 13 options:
A)
log 4 = 10,000
B)
log 10 = 4
C)
log 10,000 = 4
D)
log 4 = 10
pleasseeeeee
Answers
Answer:
C) log 10.000=a,5%4%4(1):53))?/
Answer:
c
log 10,000 = 4
Step-by-step explanation:
got it right on the test
How much time it takes to read the acts of the apostles
Answers
Answer:
5
Step-by-step explanation:
it absolutely depends on how fast you study
finding missing measure
Answers
Answer:
<C=101° and <E=46°
Step-by-step explanation:
Both Being co-interior angles....
what is 2.4483 rounded to the nearest thousandth
Answers
Answer:
2.448
Step-by-step explanation:
thousandth is the third number place after the decimal point
Answer:
2.448
hope this helps
Someone help me on 13 please??? And explain it please and thank you !
Answers
Answer: PR = 22 / or 9x+4 in equation
Step-by-step explanation:
PR is given 14x-6
We can use PQ and QR equations since they equal PR
14x-6=3x+6x+4
14x-6=9x+4
add six to both sides
14x=9x+10
subtract 9x from both sides
5x=10
Divide by 5
x = 2
This step Isn't needed this is to check your answer.
14(2)-6
28-6 = 22
3(2) = 6
6(2)+4 = 16
6 + 16 = 22
It checks out :D
A certain number of nickels, dimes and quarters have a value of $5.60 there are an equal number of each type of coin. How much coins are there? (PLEASE HELP WORTH ALOT OF POINTS)
Answers
Answer:
Step-by-step explanation:
A certain number of nickels, dimes and quarters have a value of $5.60 there are an equal number of each type of coin. How much coins are there?
(0.05+0.10+0.25)c =5.60
0.40c=5.60
40c=560
c = 14
There are 14 nickels ,dimes and quarters.
FInd the value of x/
Answers
Answer:
x=18
Step-by-step explanation:
Which fraction is halfway between 1/2 and 1 1/4
Answers
Answer:
3/4;4/4
very simple just make them like terms and count ok
please mark me as brainlist as brainlist
Answer:
[tex]\frac{7}{8}[/tex]
Step-by-step explanation:
Find the average by adding the 2 fractions and dividing the sum by 2
[tex]\frac{1}{2}[/tex] + 1 [tex]\frac{1}{4}[/tex]
= [tex]\frac{1}{2}[/tex] + [tex]\frac{5}{4}[/tex]
= [tex]\frac{2}{4}[/tex] + [tex]\frac{5}{4}[/tex]
= [tex]\frac{7}{4}[/tex]
Then
[tex]\frac{7}{4}[/tex] ÷ 2
= [tex]\frac{7}{4}[/tex] × [tex]\frac{1}{2}[/tex]
= [tex]\frac{7}{8}[/tex]
Use the blank table to help determine the answer to the question below.
If bananas cost $0.45 each, how much will 9 bananas cost in all?
Answers
Answer:
$4.05 for all nine bananas.
Answer:
The total cost 9 bananas is $4.05
which stamens is correct ?
- travis is correct because the number of cartons of eggs and the cost of the cartons of eggs are all multiples of 2
- travis is correct because the relationship between the cost of a carton of eggs in Branson city is twice the cost of carton of eggs in Grayson city
-travis is incorrect since the cost of carton eggs in Grayson city is $1.50 and the cost of carton of eggs in Branson city should be half that or $.75
-travis is incorrect since the cost of carton eggs and grayson city is $1.50 and the cost of carton of eggs and Branson city should be twice that or three dollars
Answers
Answer:
i think stament 2 is correct
Step-by-step explanation:
How would you rewrite the expression 6(2+9) using distributive property?
Answers
Answer:
66
Step-by-step explanation:
Answer:
12+54
Step-by-step explanation:
HELP!!!Identify the following parts of the graph
14
3
12
2
4
16
(2 points) x-intercept:(
(2 points) x-intercept: (.)
(2 points) y-intercept: ()
(2 points) Does it have a maximum or minimum?
Answer:
(2 points) What is the max/min point:
Answers
Answer:
X ints = (-1,0) , (3,0)
Y int = (0, -3)
Minimum (as it infinitely extends positively, but does not go down all the way)
Min point = (1,-4)
Step-by-step explanation:
Someone help me ples
Answers
Answer:
24
Step-by-step explanation:
You should draw a picture to let everything fall into place:
.................2x.......................
N ----x+7------ O ---10---- P
Then you can easily see that
x+7 + 10 = 2x
17 = 2x - x
so x = 17
NP = 2x = 2*17 = 34
NO = x+7 = 17+7 = 24
OP = 10
NO + OP = 24 + 10 = 34 = NP
The function f(x) = 15x + 2 What is the meaning of the slope of the function?
Answers
Answer:
15
Step-by-step explanation:
y=mx+b where m=slope and b=y-intercept.
PLS HELP I WILL MARK BRAINLIEST!!!
Answers
Please help? I don’t understand I’ll give points
Answers
Answer:
155
Step-by-step explanation:
Two angles that form a straight line will always add up to 180.
Subtract 180 - 25 to get 155
Answer:
155 degrees
Step-by-step explanation:
Straight Angle is 180
x = 180 - 25
x = 155
please help me with this :D
Answers
[tex] \color{plum}\bold{(C)} [/tex] Diameter of circle P is the same length as the radius of circle Q.
○=> Steps to derive correct option :Given :
Diameter of circle P = 26 cm
Radius of circle P :
[tex] =\tt \frac{diameter}{2} [/tex]
[tex] = \tt \frac{26}{2} [/tex]
[tex]\color{plum} = \tt13 \: cm[/tex]
Thus, radius of circle P = 13 cm
Diameter of circle Q = 52 cm
Radius of circle Q :
[tex] = \tt \frac{diameter}{2} [/tex]
[tex] =\tt \frac{52}{2} [/tex]
[tex] \color{plum}= \tt26 \: cm[/tex]
Thus, radius of circle Q = 26 cm
Radius of circle R = 52 cm
Diameter of circle R :
[tex] =\tt radius \times 2[/tex]
[tex] =\tt 52 \times 2[/tex]
[tex]\color{plum} = \tt104 \: cm[/tex]
Thus, the diameter of circle R = 104 cm
☆ Conclusion :
▪︎Diameter of circle P is the same length as the radius of circle Q.
Therefore, the correct option is (C) Diameter of circle P is the same length as the radius of circle Q.
HELP I NEED HELP ASAP
Answers
Answer:
I think 334 is the answer
Solve each equation. 3x = 10
Answers
Answer:
3 X 3 + 1 = 10
Step-by-step explanation:
3 times 3 gives you nine plus 1 equals 10
A tortoise starts running a length of 400 m. After one day, the tortoise found it has only come 4/5 of the total journey. What is the distance the tortoise has still to cover?
plz explain it..
Answers
Answer:
The distance that the tortoise has still to cover is equal to 80 meters.
Step-by-step explanation:
When it says that she has only come 4/5 of the total journey that means that if we were to divide the journey into 5 parts of the same length, the turtle would already be done with 4 parts and has only 1 more part to do before finishing the journey.
Since all the parts are of the same length then the distance of that one part that she still has to cover is equal to...
400 / 5 = 80 m
Therefore the distance that the tortoise has still to cover is equal to 80 meters
Step-by-step explanation:
Given,
A tortoise starts running a length of 400 m.
after one day , the tortise found it has come only 4/5 tortise.
so, the total distance is : 4/5 of 400 m.
then it will come :320m.
Ans: 320m.
1. Given A = πrl, make l the subject of the formula.
2. Given P =RT/V, make T the subject of the formula.
3. Given I =PRT/100, make T the subject of the formula.
4. Given V =πd^2h/4, make d the subject of the formula.
5. Given V = u + at, make t the subject of the formula.
6. Given T =A/R−r, make r the subject of the formula.
7. Given Q =R(B−T)/B, make B the subject of the formula.
8. Given P − mg =Mv^2/r, make:
a) v the subject of the formula.
b) m the subject of the formula.
9. Given m2 =a+b/a−b, make:
c) b the subject of the formula.
d) a the subject of the formula.
10. Given A =h(a+b)/2,express b as the subject of the formula.
11. R = √pm−q/q+cm, make m the subject of the formula.
12. Given n =1/d^2,make d the subject of the formula.
13. V = √a^2−x^2, make x the subject of the formula.
14. Given that P = r^2h, make h the subject of the formula.
15. If =brt/v−b, make r the subject of the formula.
Answers
Answer:
1. l= A/πr
2. T = PV/R
3. T = 100l/PR
5. t = v/u + a
