Answer: 68.82
Step-by-step explanation:
74 * (1- 7%) and solve
= 68.82
The price of a math book after a discount of 25% is $30.
Answer:
7.5dollars
Step-by-step explanation:
25%/100×$30
Find the area of the trapezoid.
14 mm
15 mm
36 mm
1. 270 mm²
2. 375 mm²
3. 750 mm²
5. 3780 mm²
Answer: no one cares
Step-by-step explanation:
because it's to hard[tex]\pi \pi \pi \pi \pi \pi \pi \pi \pi \pi \pi \pi \pi \left \{ {{y=2} \atop {x=2}} \right. x_{123} \left \{ {{y=2} \atop {x=2}} \right. \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx \left \{ {{y=2} \atop {x=2}} \right. \sqrt{x} \sqrt{x} \sqrt{x} \alpha \pi x^{2} x^{2} x^{2} \\ \\ \neq \pi \pi 5069967.94389438.494898 that's the answer[/tex]The weight of potato chips in a medium sized bag is stated to be 10 ounces. The amount that
the packaging machine puts in these bags is believed to be normally distributed with a mean of 10.2
ounces and a standard deviation of 0.12 ounces. Is it unusual for a bag to contain 9.8 ounces of
chips? Explain your answer.
Step-by-step explanation:
a normal distribution with mean m and standard deviation d gives us a few regular pieces of information.
for example, we know that 68.2% of all events are within the interval
m ± d
and 95.4% of all events are in the interval
m ± 2d
and 99.7% of all events are in the interval
m ± 3d
that means only 0.3% of all events are outside the interval
m ± 3d = 10.2 ± 3×0.12 = 10.2 ± 0.36
now, when a bag is filled with 9.8 ounces, it is 0.4 off the mean (10.2).
that means it is outside the 10.2 ± 0.36 interval and inside the 0.3% "exception" range.
you have to see it also that way : 0.3% means 3 out of 1000 bags are in that range.
so, yes, it is considered unusual.
Solve the equation
below. Show all of your
work.
20= m÷-5
Answer:
The solution to the equation 20 = m ÷ -5 is m = -100
To see this, we can multiply both sides of the equation by -5 to isolate the variable m:
20 × -5 = m ÷ -5 × -5
Expanding the right side of the equation:
20 × -5 = m × 1
Combining like terms:
-100 = m
And the solution is:
m = -100
Verification:
To verify the solution, we can plug in the value of m back into the original equation and see if it is true:
20 = -100 ÷ -5
Expanding -100 ÷ -5:
20 = 20
Since 20 = 20 is a true statement, we have verified that the solution m = -100 is correct.
Enter each answer as a whole number or a faction, or DNE forDoes Not Exist
The values of the piecewise functions at the indicated limits using the equations obtained from the graph are;
[tex]\lim \limits_{x \to2^+}\frac{f(x) - 4}{f(x+ 3)} = \underline{-\frac{2}{3} }[/tex]
[tex]\lim \limits_{x\to 3^-}[/tex] f(f(x) + 4) = 7
[tex]\lim\limits_{h\to 0} \frac{f(2+ h)-f(2)}{h}[/tex] DNE
What is a piecewise function?A piecewise function is a function that has rules or definition based on the interval of reference of the function.
The graphed function, f(x), comprising of several piecewise functions, indicates that as x → 2⁺, we get;
The points on the line of the graph are;
(1, 1), and (3, 3)
The slope of the graph as x tends to 2⁺ is therefore;
Slope = (3 - 1)/(3 - 1) = 1
The equation of the line is therefore;
y - 1 = x - 1
y = f(x) = x
Therefore;
f(x) - 4 = x - 4
f(x + 3) = x + 3
[tex]\lim \limits_{x\to 2^+} \frac{f(x) -4}{f(x + 3)} = \frac{x - 4}{x + 3} | x = 2[/tex]
[tex]\lim \limits_{x\to 2^+} \frac{f(x) -4}{f(x + 3)} = \frac{2 - 4}{2 + 3} =\underline{-\frac{2}{5}}[/tex]The piecewise function for the interval, x → 3⁻ is; f(x) = x, therefore;
f(f(x) + 4) = f(x + 4) = x + 4
[tex]\lim \limits_{x\to 3^-}f(f(x) + 4)[/tex] = x + 4, where; x = 3, therefore;
[tex]\lim \limits_{x\to 3^-}f(f(x) + 4)[/tex] = 3 + 4 = 7[tex]\lim \limits_{h\to 0} = \frac{f(2 + h)-f(2)}{h}[/tex], can be found as follows;
The equation of the function at x = 2 is; y = f(x) = x
f(2 + h) = 2 + h
f(2) = 2
Therefore;
[tex]\frac{f(2 + h)-f(2)}{h}[/tex] = (2 + h - 2)/h = h/h
[tex]\lim \limits_{h\to 0} \frac{f(2 + h)-f(2)}{h} = \frac{0}{0}[/tex] DNE (Does Not Exist)Learn more about the piecewise functions here: https://brainly.com/question/14390119
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Find the equation for the line through the point (7/5,1/12) that is perpendicular to the line 3x-4y=7. You may leave your answer in the point-slope form if you wish. If you use slope-intercept form, all fractions must be combined and reduced wherever possible.
The equation of the line is (y - 1/12) = -4/3(x - 7/5).
What is the slope of a line?
A line's slope in mathematics is defined as the ratio of the change in the y coordinates to the change in the x coordinate.
Both the net change in the y-coordinate and the net change in the x-coordinate are represented by y and x, respectively.
Consequently, the formula for the change in the y-coordinate with respect to the change in the x-coordinate is
m = y/x = y/x = change in y/change in x
where "m" represents a line's slope.
Additionally, the slope of the line can be depicted by
tan θ = Δy/Δx
So, the slope of a line is tan.
The given equation of a line is:
3x-4y=7
-4y = -3x + 7
y = 3/4 x - 7/4
The slope of the line is 3/4.
The slope of the line perpendicular to the given line is - 1/m = - 4/3
The point-slope of a line is y - y₁ = m(x - x₁).
The given point is (7/5,1/12)
The equation of the line is
(y - 1/12) = -4/3(x - 7/5)
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A, B, C and D are four towns.
B is 40 kilometres due East of A.
C is 40 kilometres due North of A.
D is 65 kilometres due South of A.
a) Work out the bearing of B from C.
135
b) Calculate the bearing of D from B.
Answer
+
G
a) The bearing of B from C is; 45° South-East.
b) The bearing of D from B is; 58.39° South Of West
How to calculate the bearing?a) Distance Between B and C is;
BC = √( 40² + 40²)
= 40√2
= 56.57 km
Angle of B from C = Tan⁻¹( 40/40) = 45°
Bearing of B From C = 45° South Of East
Or 90 - 45° = 45°
45° East of South
Thus, that is the bearing of B from C
b) Distance Between B and D is;
BD = √(40² + 65²)
= 76.32 km
Angle of D from B = Tan⁻¹( 65/40)
= 58.39 °
Bearing of D From B = 58.39° South Of West
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The population, P, in millions, of Ethiopia was 72.5 million in 2004
2.5%. Let t be time in years since
and growing at an annual rate of
2004.
an amal rate of 2,8%. Let (B) Express P as an exponential function using base e
Answer:
P = 72.5 * e^(0.025t)
Step-by-step explanation:
Here's a step by step solution with all the details and calculus involved.
(a) Express P as a function in the form P = Poat.
Since the population is growing continuously at a rate of 2.5% per year, we can use the formula for continuous growth:
P = Po * e^(rt)
where Po is the initial population (72.5 million), r is the continuous growth rate (0.025), and t is the time elapsed in years since 2004.
The continuous growth rate, r, is related to the annual growth rate, g, by:
r = g / 100
So, the continuous growth rate is 0.025.
Substituting the values into the formula for continuous growth, we get:
P = 72.5 * e^(0.025t)
This is the expression for the population as a function of time in the form P = Poat.
(b) Express P as an exponential function using base e.
The exponential function using base e is already in the desired form. So, we can simply write:
P = 72.5 * e^(0.025t)
If my answer has satisfied your requirements, I would appreciate it if you would give me a rating : Brainliest Answer!
What else must you know to prove the triangles congruent by ASA? By SAS?
The proof of congruence by SAS, then 2 corresponding sides and the corresponding included angles of both triangles are equal.
What are congruent angles?Angles who are of same measurement are called congruent.
Suppose that two angles ∠A and ∠B are of same measure, then
[tex]m\angle A = m\angle B[/tex]is the notation to say that they are of same measurement, where the small m shows that its the measurement of the angles they're preceding.
The SAS postulate , Two sides and the included angle of one triangle are identical to the corresponding two sides and the included angle of another triangle.
In the triangle, the angles mCAD and mACB are congruent.
m∠CAD ≅ m∠ACB
Since m∠CAD and m∠ACB are congruent, AD and BC must also be congruent.
As a result, the SAS Congruence postulate is proven.
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Solve for x, each figure is a trapezoid
By calculating , The value of x we get is 5 as a final resultant.
What is trapezoid ?
A trapezoid is a quadrilateral with two parallel sides, called the "bases," and two non-parallel sides, called the "legs." The parallel sides can have different lengths, and the trapezoid can be either right-angled or oblique. In other words, a trapezoid is a geometric shape that has two parallel sides, two non-parallel sides and four angles.
Since a Trapezoid has 360 Degrees total and since the sides are equal we can say that
180=110+17x-15
70=17x-15
85=17x
x=5
Therefore, By calculating , The value of x we get is 5 as a final resultant.
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The opportunity cost of treating HIV/AIDS cases increases as more HIV/AIDS cases are treated.
Draw a curve that shows the production possibilities for the world economy that produces HIV/AIDS treatments and other goods and services. Label the curve PPF0.
Then draw the PPF that shows the effect of an advance in technology on HIV/AIDS treatments. Label the curve PPF1.
On solving the provided question, we can say that from the graphs The curve preceding technological advancement is called PPF0. PPF1 is the curve following technological advancement.
What is graphs?Mathematicians use graphs to logically convey facts or values using visual representations or charts. A graph point will typically reflect a relationship between two or more things. Nodes, or vertices, and edges make form a graph, a non-linear data structure. Glue together the nodes, often referred to as vertices. This graph has vertices V=1, 2, 3, 5, and edges E=1, 2, 1, 3, 2, 4, and (2.5), (3.5). (4.5). Statistical charts (bar charts, pie charts, line charts, etc.) graphical representations of exponential growth. a logarithmic graph in the shape of a triangle
The curve preceding technological advancement is called PPF0. PPF1 is the curve following technological advancement.
Prior to technological advancement, the opportunity cost of treating HIV/AIDS rises as the world deviates from its PPF. The potential cost of treating more HIV/AIDS cases falls as a result of technological advancements since less other commodities and services must be sacrificed in order to treat more HIV/AIDS patients. Alternatively, the world might treat more HIV/AIDS patients right now by forgoing the same number of other commodities and services.
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The correct question is -
More than 50 years after it jumped the species barrier and became one of the most devastating viruses to affect mankind, HIV remains a stubborn adversary. Treatment has improved dramatically over the past 20 years and now, a cure could be in sight.
Source: The Guardian, November 30, 2018
Make a graph of the production possibilities frontier with HIV/AIDS cases treated on the x-axis and other goods and services on the y-axis before and after the advance in technology.
Question content area bottom left
Part 1
The opportunity cost of treating HIV/AIDS cases increases as more HIV/AIDS cases are treated.
Draw a curve that shows the production possibilities for the world economy that produces HIV/AIDS treatments and other goods and services. Label the curve PPF0.
Then draw the PPF that shows the effect of an advance in technology on HIV/AIDS treatments. Label the curve PPF1.
F(-10)=64 and f(15)=54
What is the slope
Equation and x intercept
The equation of the straight line is 2x+5y=340.
The x-intercept point of that line is (170,0).
What is the equation of a straight line?A straight line has different forms like point-slope form, standard form, slope-intercept form, and others. A specific form is used according to the given data for convenience.
As f(-10)=64 and f(15)=54, two points can be wriiten as (x₁,y₁)=(-10,64) and (x₂,y₂)=(15,54).
Now, use the two-point form of the equation of a line.
(y-y₁)/(x-x₁)=(y₂-y₁)/(x₂-x₁)
(y-64)/(x-(-10))=(54-64)/(15-(-10))
(y-64)/(x-10)=-10/25
25(y-64)=-10(x-10)
5(y-64)=-2(x-10)
5y-320=-2x+20
2x+5y=340
Therefore, the required equation of the line is 2x+5y=340.
To find the x-intercept, substitute y=0 into the equation of the line.
2x+5×0=340
2x=340
x=170
Therefore, the x-intercept point is (170,0).
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a rectangular sheet of dimensions 44cm *14cm is rolled along its length and a cylinder is fromed find the surface area of the cylider
The total surface area of cylinder formed is 924 cm²
We are given a rectangular sheet of paper of dimensions 44 cm* 14 cm is rolled along its length
So, height of formed cylinder = Length of rectangular sheet = 14 cm
Circumference of base of cylinder = Breadth = 44 cm
Circumference of circle = 2πr
So,
2 × (22/7) × r =44
r = (44×7)/(22×2)
Radius of cylinder is 7 cm
Height = 14 cm
Total surface area of cylinder = 2πr(h+r)
= 2 × 22/7 × 7 (14 +7 )
= 924 cm²
Hence the total surface area of cylinder formed is 924 cm² .
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When sales representatives for a pharmaceutical company drive to out-of-town meetings that require an overnight stay, they receive $140 for lodging plus $0.60 per mile driven. How many miles did Joe drive if his company reimbursed him $290 for an overnight trip?
Question content area bottom
Part 1
The equation is enter your response here. Joe drove enter your response here miles.
(Type an equation using x as the variable.)
solve for equation and miles Joe drove
Joe was given $329 for an overnight trip because he drove a distance of 220 miles
How to solve Word Problems ?
Five Easy Steps to Solving Word Problems (WASSP)
Write (or draw) what you know.Ask the question.Set up a math problem that could answer the question.Solve the math problem to get an answer.Put the answer in a sentence to see if the answer makes sense!Given Data
Amount rep receive = $175
Added amount per mile driven = $0.70
Reimbursed/Total = $329
The Mathematical relation for this scenario is
Total amount = Amount Receive+ 0.7*Distance driven
let the distance driven be x
Substituting our given data into the relation we have
329= 175+ 0.7*x
329-175 = 0.7x
154 = 0.7x
divide both sides by 0.7
x = 154/0.7
x = 220miles
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Question 6 of 10
What is the length of the hypotenuse of the triangle below?
3√2
45°
90⁰
h
3√2
45°
Answer:
c) 6
Step-by-step explanation:
in a 45-45-90 degree triangle the hypotenuse is [tex]\sqrt{2}[/tex] times more than the length of the other sides
3[tex]\sqrt{2}[/tex] × [tex]\sqrt{2}[/tex] is the same as 3(2) or 6
The length of the hypotenuse of the triangle is,
⇒ h = 6
What is mean by Triangle?A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.
Given that;
Base of triangle = 3√2
Length of triangle = 3√2
Now, We can formulate;
⇒ h² = (3√2)² + (3√2)²
⇒ h² = 18 + 18
⇒ h² = 36
⇒ h = 6
Thus, The length of the hypotenuse of the triangle is,
⇒ h = 6
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The answer to this problem
Answer:
A. (f+g)(x)=-2x^2-2x+8
Step-by-step explanation:
You combine like terms by adding
Carlos had $400. He decided to spent 40% of it on clothes, and 50% of the remaining money on video games. How much money did Carlos spend? How much does Carlos have left?
Answer:
Step-by-step explanation:
We can start by finding how much money Carlos spent on clothes. To do this, we simply multiply the original amount of $400 by 40%:
Clothes = $400 * 40% = $400 * 0.40 = $160
Next, we find how much money Carlos has left after spending on clothes. To do this, we subtract the amount spent on clothes from the original amount:
Remaining Money = $400 - $160 = $240
Finally, we find how much money Carlos spent on video games. To do this, we multiply the remaining money by 50%:
Video Games = $240 * 50% = $240 * 0.50 = $120
So, in total, Carlos spent $160 on clothes and $120 on video games, for a total of $160 + $120 = $280.
And Carlos has $400 - $280 = $120 left.
After spending 40% of the $400 on clothes, Carlos has $400 x (100 - 40) / 100 = $240 left.
Next, he spent 50% of the remaining $240 on video games, which is $240 x 50 / 100 = $120.
Therefore, Carlos spent a total of $400 - $240 = $160.
Finally, Carlos has $240 - $120 = $120 left.
four times the sum of the three consecutive even intergers is 240 more than six times the smallest integer.
Answer:
Step-by-step explanation:
Let's call the smallest of the three consecutive even integers "x". Since they are consecutive and even, we know that the next two integers must be "x + 2" and "x + 4".
Now we can set up the equation for the problem:
4 * (x + (x + 2) + (x + 4)) = 240 + 6x
Expanding the parentheses on the left side:
4 * (3x + 6) = 240 + 6x
Simplifying the left side:
12x + 24 = 240 + 6x
Subtracting 6x from both sides:
6x + 24 = 240
Subtracting 24 from both sides:
6x = 216
Dividing both sides by 6:
x = 36
So the smallest of the three consecutive even integers is 36, and the others are 38 and 40.
The records of a casualty insurance company show that, in the past, its clients have had a mean of 1.7 auto accidents per day with a standard deviation of 0.04. The actuaries of the company claim that the standard deviation of the number of accidents per day is no longer equal to 0.04, Suppose that we want to carry out a hypothesis test to see if there is support for the actuaries' claim. State the null hypothesis H, and the alternative hypothesis H, that we would use for this test. P KQ 0 Oso X X a Р S 00 020
The null hypothesis H0 in this case would be that the standard deviation of the number of accidents per day is equal to 0.04, while the alternative hypothesis Ha would be that the standard deviation of the number of accidents per day is not equal to 0.04.
The null hypothesis represents the status quo or the default assumption, which is that there has been no change in the standard deviation of the number of accidents per day. The alternative hypothesis represents the claim made by the actuaries, which is that there has been a change in the standard deviation.
Mathematically, the null and alternative hypotheses can be expressed as follows:
H0: σ = 0.04
Ha: σ ≠ 0.04
where σ represents the standard deviation of the number of accidents per day.
The hypothesis test would be used to determine whether there is evidence to support the actuaries' claim that the standard deviation has changed, or whether there is not enough evidence to reject the null hypothesis that the standard deviation remains equal to 0.04.
guysss solve this
there are "6" eggs layed on the table
I break "2" of them
I cooked "2" of them
I ate "2" of them
how many eggs did they left?
Answer:
Step-by-step explanation:
4.
first, you broke the 2 eggs, and then cooked the eggs. after cooking them, you ate the two eggs that you cracked and cooked.
find the unknown terms in the sequence: 1 3/4, 1 9/16, 1 3/8, 1 3/16, A, B, C, 7/16, 1/4
The 5th , 6th and 7th term of the arithmetic sequence is 1 , 13/16 and 10/16 respectively
What is Arithmetic Progression?An arithmetic progression is a sequence of numbers in which each term is derived from the preceding term by adding or subtracting a fixed number called the common difference "d"
The general form of an Arithmetic Progression is a, a + d, a + 2d, a + 3d and so on. Thus nth term of an AP series is Tn = a + (n - 1) d, where Tₙ = nth term and a = first term. Here d = common difference = Tₙ - Tₙ₋₁
Sum of first n terms of an AP: Sₙ = ( n/2 ) [ 2a + ( n- 1 ) d ]
Given data ,
Let the first term of the AP be a₁ = 1 3/4
Let the second term of the AP be a₂ = 1 9/16
So , the common difference of AP d = a₂ - a₁
On simplifying the equation , we get
The common difference d = 1 9/16 - 1 3/4 = ( 25/16 - 7/4 )
The common difference d = - ( 3/16 )
And , the nth term of the AP is a + (n - 1) d
So , the 5th term of the AP = ( 1 3/4 ) + ( 4 ) ( -3/16 )
On simplifying the equation , we get
The 5th term of the AP = ( 7/4 ) + ( -3/4 )
The 5th term of the AP = 4/4 = 1
Therefore , the value of A = 1
And , the 6th term of the AP = ( 1 3/4 ) + ( 5 ) ( -3/16 )
On simplifying the equation , we get
The 6th term of the AP = ( 7/4 ) + ( -15/16 )
The 6th term of the AP = 13/16
Therefore , the value of B = 13/16
And , the 7th term of the AP = ( 1 3/4 ) + ( 6 ) ( -3/16 )
On simplifying the equation , we get
The 7th term of the AP = ( 7/4 ) + ( -18/16 )
The 7th term of the AP = 10/16
Therefore , the value of C = 10/16
Hence , the arithmetic progression is solved
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Calvin will plant lily bulbs and iris bulbs in his front garden. He will plant a total of flower bulbs and as many iris bulbs as lily bulbs. The graph below shows the number of lily bulbs (x) and the number of iris bulbs (y) Calvin will plant. Bulbs to Be Planted Which statement describes the point of intersection on the graph?
A. Calvin will plant lily bulbs.
B. Calvin will plant iris bulbs.
C. Calvin will plant lily bulbs and iris bulbs.
D. Calvin will plant lily bulbs and iris bulbs. Lily Bulbs
The statement that describes the point of intersection on the graph is Calvin will plant lily bulbs and iris bulbs. Option C
What is point of intersection of a graph?The point of intersection on the graph represents the values of x and y where both conditions are satisfied.
In this case, the point of intersection represents the number of lily bulbs (x) and the number of iris bulbs (y) that Calvin will plant such that the number of iris bulbs is equal to the number of lily bulbs.
So, the correct statement that describes the point of intersection on the graph is "Calvin will plant lily bulbs and iris bulbs".
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help mee please i need help
Answer:
this hard
Step-by-step explanation:
Answer: C
Step-by-step explanation:
In this picture B,D, and F are
midpoints. AC=50, CE=60, and
BD=35
B
AE=[? ]
The measure of the side AE would be 70 units.
What is the triangle midpoint theorem?We know that the triangle midpoint theorem says that the line segment connecting the midpoints of two sides of a triangle is parallel to the third side and is congruent to one half of the third side.
In the given triangle B, D, F are the midpoints of the triangle.
AC=50, CE=60,
BD=35
Then, in the given triangle if BD is connecting the midpoints of AC and CE then it must be parallel to AE and equal to FE ( half of AE).
⇒ BD ≅ FE= 1/2 AE
AE = 70 units
Then, the length of line segment AE = 70 units
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3. Juanita put $2,000 in a 6-month CD. The interest rate is 3%. The interest is compounded quarterly. What is the interest for the first quarter? What will be the value of the CD when it matures?
The interest for the first quarter would be $ 15
The value of the CD when it matures is $ 2, 030. 11
How to find the value of the CD ?The interest is said to compound quarterly which means that the periodic interest rate per quarter is:
= 3 % / 4
= 0. 75 % per quarter
The interest in the first quarter :
= 0. 75 % x 2, 000
= $ 15
The value of the CD at maturity is:
= 2, 000 x ( 1 + 0. 75% ) ²
= $ 2, 030. 11
Note : 2 periods because 6 months is 2 quarters.
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Eleven times the sum of a number and ten is 242. What is the number?
10. Susan has $800 in her bank account. Every week, she withdraws $100 for spending money.
A) What is the rate of change (or slope) in this situation?
B)
How much will she have left in her account after five weeks?
A) The rate of change in this situation is -$100 per week.
B) She will have $300 left in her account after five weeks.
Examine the right triangle below, solve for x, round to two decimal places if
necessary.
The solution for x in the triangle is x = 51.98 units
How to solve for x in the triangle?
Trigonometry is a branch of mathematics dealing with the relationship between the ratios of the sides of a right-angled triangle with its angles.
Using trigonometric ratio:
sin 38° = 32/x (Sine = opposite/hypotenuse)
x = 32/sin 38°
x = 51.98 units
Therefore, the solution is x = 51.98 units
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Polygon DEFG has coordinates D(2, 5), E(3, 1), F(4, 6), and G(6, 6). If the polygon is translated 3 units to the left, what are the coordinates of F'?
( , )
The polygon DEFG is translated 3 units left to get F'(1, 6)
What is transformation?Transformation is the movement of a point from its initial location to a new location. Types of transformation are reflection, translation, rotation and dilation.
Translation is the movement of a point either up, down, left or right in the coordinate plane. Translation is a rigid transformation that preserves the shape and size.
Polygon DEFG has coordinates D(2, 5), E(3, 1), F(4, 6), and G(6, 6). The polygon is translated 3 units left to get F'(1, 6)
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What is the solution to the equation?
√x + 2 = 1
O A. 1
OB. 4
O C. 1 and 4
OD. no solution
Answer:
The solution of the equation is B. 4
Step-by-step explanation:
√x + 2 = x
√x = x - 2
(√x)² = (x-2)²
x = (x-2) (x-2)
x = x² - 4x + 4
x moves to the right
0 = x² - 4x - x + 4
0 = x² - 5x + 4
0 = (x-1) and (x-4)
x-1 = 0 x-4 = 0
x = 1 (not) x = 4
So, the solution to the equation is B. 4
