a student concluded that the solution to the equation startroot 2x+1 endroot +3=0 is x=4 do you agree? explain why or why not.
Answers
Answer:
X=4
Step-by-step explanation:
Given the equation
√2x+1 + 3= 0
Subtract 3 from both sides
√2x+1 +3 +3 = 0-3
√2x1 = -3
Square both sides
{√2x+1)² =(-3)²
2x+1 =9
2x= 9-1
2x = 8
x = 8/2
x = 4
Hence I agree that the solution is x = 4 based on the explanation above
Related Questions
help for brainliest plsssssssssssssss
Answers
Answer:
There will be 416 students in each group.
Step-by-step explanation:
There are 1,248 students. There are also 3 groups: radical readers, mathematicians, and super scientists. To find the number of people in each group, divide the total students by the number groups, which would be 1,248 divided by 3.
answer : 416
Let x=
-
11
8
and y=
11
4
0
Which expression has a negative value?
Copyright 2017 Open Up Resources
Select one
OA. x+y
OB. xy
OC. x.y
OD. x/y
Answers
Answer:
OD. x/y
Step-by-step explanation:
eighteen 2.5- gallon buckets are needed to fill a cistern of water
How many 3-gallon buckets of water will fill the cistern.
Answers
Answer:
15 3-gallon buckets of water will fill the cistern
Step-by-step explanation:
Eighteen 2.5- gallon buckets are needed to fill a cistern of water
This means, 2.5 gallon buckets in 18 places
2.5 gallons × 18 = 1 cistern of water
45 gallons = 1 cistern of water
How many 3-gallon buckets of water will fill the cistern.
Number of 3-gallon bucket in a cistern = Total gallons of bucket in one cistern / 3-gallon buckets
= 45 gallons / 3-gallon buckets
= 15
Number of 3-gallon bucket in a cistern = 15
15 3-gallon buckets of water will fill the cistern
HELPPP ASAP WILL MARK BRAINILEST
Answers
Andy is correct! Andy has the function 4, his leading coefficient is negative, and his functions contains zeros. Hope this helps!
y+1/y-1 = 2y+3/2y+5 simplify
Answers
Answer: y=0.6 I think (try checking with other answers first)
Hope this helps a little and good luck :)
Step-by-step explanation:
What is the slope of the line that passes through the points (-10, –4) and (10, -29)? Write your answer in simplest form. Answer: Submit Answer undefined attempt i out of
Answers
Answer:
-5/4
Step-by-step explanation:
literally putting this at 45 points. can someone help me please
Answers
Answer:
15.4%Step-by-step explanation:
Volume of a cylinder:
V = πr²hContainer A
r = 10 ft, h = 11 ftV = π*10²*11 = 1100π ftContainer B
r = 7 ft, h = 19 ftV = π*7²*19 = 931π ft²After pump out the container A has the level of:
1100π - 931π = 169πLevel % in the container A:
169π/1100π×100% = 15.4% rounded to the nearest tenthSelect the locations on the number line to plot the points 9/2 and −7/2.
Answers
Answer:To plot these points on the number line, you should label the long lines on the number line as such starting from the left (-5-already there, -4,-3,-2,-1,0,1,2,3,4,5-already there).
Now take each number and convert the improper fraction into a mixed number. 9/2 = 4 1/2 and -7/2 = -3 1/2.
4 1/2 would plotted on the line exactly in between the 4 and 5.
-3 1/2 would be plotted on the line exactly halfway between -3 and -4.
You will draw a dot to show each of these positions on a number line.
Step-by-step explanation:
hope it helps
EASY MATH PROBLEM!
Please help me! Will mark brainliest for sure!
Answers
Answer:
A
Step-by-step explanation:
Answer:
The answer would be A
Step-by-step explanation:
Use the formula for |A| <= B which is: -B <= A <= B
For this example you would do:
1. Insert the numbers into the formula: -6 <= 2x - 8 <= 6
2. first do the math for -6 <= 2x-8 which is 1 <= x
3. then do the math for 2x - 8 <= 6 which is x <= 7
4. Put that together and you get 1 <= x <= 7
Good luck on the other questions!
ill mark brainliest if correct so please help
Answers
Answer:
wait do we solve it or is there answer choices??
At the beginning of a laboratory experiment, the temperature of a substance is -12.6 °C. During the experiment, the temperature of the substance decreases 7.5 °C. What is the final temperature of the substance?
!!!!SHOW YOUR WORK!!!!
Answers
Answer
20.1°C
Step-by-step explanation:
-12.6 °C - 7.5 °C =-20.1°C
Answer:
the initial temperature= -12.6⁰c
change in temperature= 7.5⁰c
the final velocity = x
-12.6-7.5=x
-20.1=x
so therefore the final temperature is -20.1
helooooooooooooooooooooooooooo
Answers
Answer:
you are asking what dont understand
Step-by-step explanation:
Luis distributes 49 roses equally among seven friends then three of his friends combined the roses they received to make a bouquet how many roses are in this bouquet there are blank roses in this bouquet
Answers
Answer:
The are 21 roses in the bouquet
Step-by-step explanation:
Since the 49 roses are distributed evenly amongst the 7, then what each of the seven will get would be 49/7 = 7 roses
So 3 of the friends combine every of theirs to make a bouquet
The number of roses in the bouquet will be 7 + 7 + 7 = 21 roses
Can you please solve this, ASAP
Answers
Answer:
if you use a2 plus b2 equals c2
Step-by-step explanation:
40 m
There are 16 forwards and 40 guards in Leo's basketball league. Leo must include all players on a team and wants each team to have the same number of guards. If Leo creates the greatest number of teams possible, how many guards will be on each team?
Answers
List the multiples of each number:
16: 1, 2 , 4, 8 , 16
40: 1, 2 , 4 , 5, 8, 10, 20, 40
The greatest common multiple is 8
40 guards / 8 = 5
There will be 5 guards on each team.
Create a word problem where the answer to the problem is $10.50. Write the equation under.
Answers
Answer:
Ten Dollars Plus fifty cents equals Ten Dollars and fifty cents
Step-by-step explanation:
10 + .50 = 10.50
What is the value of q?
S
415
2/14
S
2015
ין
R
4
64,5
T
10
Answers
Answer:
[tex]2 \sqrt{14} [/tex]
Does anyone understand this?
Answers
Answer:
C
Step-by-step explanation:
please help asap ill give brainliest if youre correct!!!
Answers
Answer: its B
Step-by-step explanation: i've done this test before
Answer:
the answer is b
Step-by-step explanation:
because i have done this question before
PLEASE help it's timed!! :)
Answers
Answer:
The answer is 5
shdhejrjejsn when heuejwkwudheje
Leah would like to earn at least $120 per month. She babysits for $5 an hour and works at an ice cream shop for $10 per hour. Let x represent the hours she number of hours she babysits and y represent the hours she works at the ice cream shop.
Answers
This question is incomplete
Complete Question
Leah would like to earn at least $120 per month. She babysits for $5 per hour and works at an ice cream shop for $10 per hour. Leah cannot work more than a total of 20 hours per month. Let x represent the number of hours Leah babysits and let y
represent the number of hours Leah works at the ice cream shop.
Answer:
The inequalities to solve this question is given as:
x + y ≤ 20
5x + 10y ≥ 120
Leah must spend: 16 hours babysitting and 4 hours working at the ice cream shop to earn at least $120
Step-by-step explanation:
Let x represent the hours she number of hours she babysits and y represent the hours she works at the ice cream shop. Leah cannot work more than a total of 20 hours per month.
Hence:
x + y ≤ 20 ...... Equation 1
Leah would like to earn at least $120 per month.
She babysits for $5 an hour and works at an ice cream shop for $10 per hour.
Hence, out Equation is given as:
x × $5 + y × $10 = $120
5x + 10y ≥ 120..... Equation 2
The inequalities to solve this question is given as:
x + y ≤ 20
5x + 10y ≥ 120
To find x and y:
x + y = 20
x = 20 - y
5x + 10y = 120
Substitute: 20 - y for x
5(20 - y) + 10y = 120
100 - 5y + 10y = 120
Collect like terms
- 5y + 10y = 120 - 100
5y = 20
y = 20/5
y = 4 hours
Note:
x = 20 - y
x = 20 - 4
x = 16 hours
Hence:
Leah must spend: 16 hours babysitting and 4 hours working at the ice cream shop to earn at least $120
A boat is carrying containers that weigh 4000 pounds each.
Use this information to fill in the table. Then plot the ordered pairs given by the table.
Answers
Answer:
4 = 16,000
8 = 32,000
10 = 40,000
Step-by-step explanation:
4 x 4 = 16 then add the zeros and then you have 16,000. Same thing with 8. 4 x 8 = 32 then add the zeros. Also goes for 10. 4 x 10 = 40 then add the zeros.
Given f(x) and g(x) = f(x) + k, use the graph to determine the value of k.
Answers
Explanation:
Start at a point like (0,2) which is on the blue f(x) line.
Move upward until you reach the red g(x) line. You should move up 3 units. Every point on f(x) follows the same pattern to land on a corresponding point on g(x). Therefore, this moves the entire blue line up 3 units.
This leads to k = 3
So g(x) = f(x) + 3
Answer: 3
Step-by-step explanation: This is because I took the test and because if you look at the graph its on 5 and 2. An easy way to look at it is what is 5-2 but you'd have to figure out what the answer was first. Between 5 and 2 is 3. Hope this helped!
What values of X solve the equation G(x) = 0?
Answers
Answer:0
Step-by-step explanation:0x0=0
Hahahahaha umm I need help thankKss
Answers
Answer:
1
Step-by-step explanation:
John took a quiz there are 25 questions, I got a 76% how many did John get right and how many did he get wrong
Answers
Answer:
6 wrong.
Step-by-step explanation:
25 questions 76% 25*0.76=19 so he got 6 wrong.
Hope this helps plz hit the crown :D
Answer:
he got 19 correct and 6 incorrect
Step-by-step explanation:
please help!!!! im really confused and no one is answering my questions
Answers
Answer:
x = 3.464 ft.
Step-by-step explanation:
To find x we use the trigonometric identity Sine.
[tex]sin\ \theta=\frac{perpendicular}{hypotenuse}\\\\sin\ 60=\frac{x}{4} \\\\4*sin60=x\\4*0.866=x\\3.464=x\\x=3.464\ ft[/tex]
Answer:
x = 3.464 ft.
Step-by-step explanation:
Determine the output if the function rule is
2x+5 : input = 5
Answers
Answer:
2x
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
The input is 5 , the output is the value of 2x + 5 for x = 5 ( input ), that is
output = 2(5) + 5 = 10 + 5 = 15
A circle passes through the point (2, 2) and has its center at (1, -3). The radius of the circle is how many units.
Answers
Step-by-step explanation:
radius
(2,2)-(1,-3)=(1,5)
radius= 5.09 units
If f(x) = 4x and g(x) = x^3, then what is f(g(x))?
a. 4x+x^3
b. 4x^4
c. 4x^3
d. (4x)^3
Answers
Answer:
f(g(x)) = 4x³
Hence, option C is true.
Step-by-step explanation:
Given
[tex]f(x) = 4x[/tex][tex]g\left(x\right)\:=\:x^3[/tex]Determine:
f(g(x)) = ?
solving the f(g(x))
f(g(x)) = f(x³)
= 4x³
Therefore,
f(g(x)) = 4x³
Hence, option C is true.
