Answers
Answer:
The value of x is 10.
Step-by-step explanation:
The steps to do this :
[tex]x - \sqrt{2x + 5} = 5[/tex]
[tex]x - 5 = \sqrt{2x + 5} [/tex]
[tex] {(x - 5)}^{2} = {( \sqrt{2x + 5}) }^{2} [/tex]
[tex] {x}^{2} - 10x + 25 = 2x + 5[/tex]
[tex] {x}^{2} - 12x + 20 = 0[/tex]
[tex] {x}^{2} - 2x - 10x + 20 = 0[/tex]
[tex]x(x - 2) - 10(x - 2) = 0[/tex]
[tex](x - 2)(x - 10) = 0[/tex]
[tex]x = 2 \: (rejected)[/tex]
[tex]x = 10[/tex]
Related Questions
100 writen as a perfect square
Answers
Answer:
10^2.
Step-by-step explanation:
100 is a perfect square of 10.
sqrt (100)
= 10.
Hope this helped!
You have 5814 meters of rope you need to cut into 27 sections how many 27 meters secton of rope will you be able to create and how much rope will be left over as waste
Answers
Answer:
215 sections of rope that measure 27 meters in length, and you also have 9 meters of rope left
Step-by-step explanation:
we have 5,814 meters of rope and we are told to calculate the number of 27 meters sections that we can cut:
you have to divide 5,814 meters by 27 meters = 215.333
that means that you have 215 sections of rope that measure 27 meters in length, and you also have 9 meters of rope left (0.333 x 27 = 9)
someone help me with this plz!!
Answers
I need help plssssss
Answers
Answer:
the answer is c
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
C because the letter orders are parallel to the other side.
Find the point that is a solution for y=6x+8
Answers
Answer:
(-8/6, 0) is the answer
first is the absicca and the second is the ordinate
A college information pamphlet provides some statistics about the students and the professors to help high school seniors decide if they want to attend the college. The pamphlet lists the ratio of students to professors as 18 to 1. If there are 702 students at the college, how many professors are there?
Answers
Answer:
39
Step-by-step explanation:
Setting up your problem and solving:
In the question it says the ratio is students to professors right? So 18 to 1.
Write that down: Students to Professors is 18 to 1.
We know that there are 702 students in that college correct?
Write that down: 702 students in the college
We are trying to find how many professors there are so...let's do that.
Number 1:
Set your equation: have your fraction bar and equal sign like this: --- = ---
On the top, we have 1 so... 1/? = ?/?
On the other top we have the x...: 1/? = x/?
Why? Because we do not know the total of professors there are so that is X.
We put the number 1 on the other side because we know that there is only 1 out of 18 professors to students.
Number 2:
On the bottom, we will have 18...: 1/18 = x/?
On the other bottom we have 702...: 1/18 = x/702
Why? Because we know that there is a total number of 18 to 1 students on the ratio and a real total of 702 students.
Number 3.
Now you have your equation set up: 1/18 = x/702
The next step is yours: cross multiple, divide on the bottom or top or find the comparison.
I'm going to divide by the bottom okay? so.. 18/702
Set that up.
(702/18)
702/18 is 39!
SO in the end there is a total of 39 professors!
'x=39'
Hoped this helped! :)
77th term for -10,-8,-6
Answers
9514 1404 393
Answer:
142
Step-by-step explanation:
The first term of this arithmetic sequence is -10. The common difference is -8-(-10) = 2. The n-th term is ...
an = a1 +d(n -1)
an = -10 +2(n -1) = 2n -12
Then the 77th term is ...
a77 = 2(77) -12 = 154 -12
a77 = 142
The 77th term is 142.
What is 10-6(-8c+9) simplified
Answers
Answer:
-32c + 36
Step-by-step explanation:
10-6(-8c+9)
4(-8c+9)
4 × -8c = -32c
4 × 9 = 36
-32c + 36
The selling price of an item is $520. It is marked down by 10%, but this sale price is still marked up
from the cost of $360. Find the markup from cost to sale price.
Answers
Answer:
108
Step-by-step explanation:
trust me
Find the inequality represented by the graph
Answers
Answer:
y ≥ 1/2xStep-by-step explanation:
Given the following inequality, we know that y must be greater than or equal to x because the line is not dashed, and is shaded above the line.
Now to find the equation just pretend that this is just a normal linear equation, and solve for the equation.
So since the y intercept is 0, and there is a rise of 1 for a run of 2 or 1 unit up every two units to the right, the corresponding linear equation is y = 1/2x.
Now since this is an inequality where y is greater than or equal to x.
y = 1/2x → y ≥ 1/2x
Which simplified equation is equivalent to the equation shown below? 4x + -3 -9 +4x=6
Answers
Answer:
x + x = 4.5 or x = 2.25 is the answer or the value of x.
Step-by-step explanation:
4x + -3 -9 +4x=6
4x + 3 + 9 + 4x=6 + 3 + 9
4x + 4x = 18
4x/4 + 4x/4 = 18/4
x + x = 4.5
x = 2.25
tim bought 3 hat for 120/-. how much can he buy from 180/-
ASAP plz
Answers
Answer: 16
Step-by-step explanation:
Tim can buy 4 caps and will left with Rs.20 to spare
What is the unitary method?The unitary method is a method in which you find the value of a unit and then the value of a required number of units.
Given here tim can buy 3 hats from Rs.120 thus each hat cost Rs.40
Thus price of 4 hats is Rs.160 and he will be left with Rs.20 to spare.
Hence, Tim can buy 4 caps and will left with Rs.20 to spare
Learn more about the unitary method here:
https://brainly.com/question/22056199
#SPJ2
7+3²+(12-8)÷2x4
i really need help
Answers
Answer:
3/2 :D have a good day
Step-by-step explanation:
7+9+(-4)÷2(4)
=(7+9-4)/8
=3/2
How many feet are traveled by a person riding once around the merry -go-round ? Clare says, " The radius of the merry -go-round is about 4 feet , so the distance around the edge is about 8π feet. " Andre says , " The diameter of the merry-go-round is about 4 feet, so the distance around the edge is about 4π feet."
Answers
5
Which list shows these numbers in order from least to greatest?
37
26
-5.17, 133,
6
5
37
А
26
5
-5.17,
33
B -5.17,
26
5
37
6
33
C
26
S
-5.17)
133,
37
6
D
-5.17, 252
133,
37
6
5
Answers
Answer:
D
Step-by-step explanation:
In a multiple choice examination of 20 questions, four marks are given for each correct answers and one mark is deducted for each wrong answer. There is no penalty for not attempting a question. a candidate attempts "a" questions and get "c" correct. Write down, and simplify, an expression for the candidate's total mark in terms of "a" and "c".
Answers
Answer:
Total Mark = 5c - a
Step-by-step explanation:
Total Mark = 4c - (a - c) = 5c - a
Marks for correct questions = 4c
Marks deducted for incorrect questions = a - c
7 + 5x = 2x + 25
step by step pls:(
Answers
Answer:
x = 6
Step-by-step explanation:
7 + 5x = 2x + 25
first subtract 7 from both sides to isolate 5x on the left
5x = 2x + 18
then subtract 2x from both sides to isolate all of the x terms to one side
3x = 18
then divide 18 by 3 to solve for x
x = 6
hope this helped!! :)
Answer:
i got you, i wrote it out and all gimme brilliantness
Step-by-step explanation:
Given x^2 -4x+4 is a factor of the polynomial 2x^4 - 11x^3 +68x-80, completely factor the polynomial using algebraic methods.
Answers
2x^4-11x^3+68x-80
2x^4-4x^3-7x^3+14x^2-14x^2+28x+40x-80
2x^3(x-2)-7x^2(x-2)-14x(x-2)+40(x-2)
(x-2)(2x^3-7x^2-14x+40)
(x-2)(2x^3-4x^2-3x^2+6x-20x+40)
(x-2)(2x^2(x-2)-3x(x-2)-20(x-2))
(x-2)(x-2)(2x^3-3x-20)
(x-2)(x-2)(2x^2+5x-8x-20)
(x-2)(x-2)(x(2x+5)-4(2x+5))
(x-2)(x-2)(2x+5)(x-4)
(x-2)^2(2x+5)(x-4)
what is the measure of <x
Answers
Answer:
x = 104°
Step-by-step explanation:
180-76=104
z = 104°
z and x are vertical from each other, therefore, z = x
What is the image of the point (7,-5) after a rotation of 270° counterclockwise
about the origin?
Answers
Answer:
(-5, -7)
Step-by-step explanation:
if you rotate the point by 270 degrees counterclockwise, you get (5,-7) and I'm guessing image is another way to say reflection so after it is reflected then the point would be (-5,-7)
If a television was 20% off and the amount of the discount was $200 what would the original price be?
Answers
Answer:
The original price of the television would be 1000$
Worksheet
1. −3|2x + 6| = −12
2. |x − 2| + 10 = 12
Answers
1.
-3|2x+6|=-12
|2x+6|=4
2x+6=4
2x+6=-4
x1=-5, x2=-1
2.
|x-2|+10=12
|x-2|=12-10
|x-2|=2
x-2=2
x-2=-2
x1=0, x2=4
Quadratic functions 2. Did I do it right
Answers
What does a equal? (b = 3√2)
Answers
9514 1404 393
Answer:
a = √2
Step-by-step explanation:
Triangle EFG is an isosceles right triangle, so the ratios of side lengths are ...
1 : 1 : √2
That is, we have ...
3a/6 = 1/√2
Multiplying by 2 gives ...
a = 2/√2
a = √2
which of the following is the angle bisector theorem?
Answers
Answer:
The answer is B!
Step-by-step explanation:
Answer: b
Step-by-step explanation:
Doing this for the other person to get the crown because they also help me :3
Find the value of f(-7).
Answers
Answer:
f(-7) = -4
Step-by-step explanation:
We want to find the value of the function when x = -7
The y value of the function when x= -7 is -4
f(-7) = -4
Answer:
f(-7)=-4
Step-by-step explanation:
If you look at the x, in this case -7, and follow it down to where it stops on the parabola, you will see that it's y value is -4.
please tell me the answer
Answers
Answer:
It shifts leftI hope this helps you with your algebra
(05.01)
The graph of a system of equations with the same slope and the same y-intercepts will
have no solutions. (1 point)
O Always
Sometimes
O Never
Help ASAP
Answers
Answer:
Always
Step-by-step explanation:
Answer:
never.
Step-by-step explanation:
I will give you brainliest if you answer the question!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
B=95 Miles per hour as well
Both are going the same speed
4. Given that a * b = ab- evaluate
(4marks)
(i) 4*8
(ii) 2* (4 * 8)
Answers
Answer:
(i) 4*8 = 32
(ii) 2* (4 * 8) = 64
Step-by-step explanation:
(i) 4*8
4 × 8 = 32
(ii) 2* (4 * 8)
2 × (4 × 8)
2 × (32)
2 × 32 = 64
-TheUnknownScientist
Answer:
(i) 4*8 = 32
(ii) 2(4*8) = 2*32 = 64