The solution x=-1 is an extraneous solution.
What is the radical equation?Radical equations (also known as irrational) are equations in which the unknown value appears under a radical sign.
The given equation is;
\(\rm x+1=\sqrt{-6x-6}\)
The solution of the equation is determined in the following steps given below.
Squaring on both the sides
\(\rm x+1=\sqrt{-6x-6}\\\\(x+1)^2=-6x-6\\\\x^2+2x+1=-6x-6\\\\x^2+2x+1+6x+6=0\\\\x^2+8x+7=0\\\\x^2+7x+x+7=0\\\\x(x+7)+1(x+7)=0\\\\(x+7)(x+1)=0\\\\x+7=0, \ x=-7\\\\x+1=0, \ x=-1\)
Hence, the solution x=-1 is an extraneous solution.
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What division problem is represented in the picture?
-2/3 divided by 3 1/3
-3 1/3 • 3/2
-3 • 2/3
3 1/5 divided by 5
Answer:
It’s b
Step-by-step explanation
Answer: B
Step-by-step explanation:
Which of the following statements would not translate to the equation 8 ÷ x = -4?
A. Eight divided by a number is equal to negative four.
B. The solution of a number divided by eight is negative four.
C. The quotient of eight and a number equals negative four.
D. If eight is divided by a number, the result is negative four.
Answer:
B
Step-by-step explanation:
B it's wrong because 8 is divided by a number not a number by 8
Alex knits hats and scarves to sell at a craft market. He can make at most 20 hats and 30 scarves, but no more than 40 items altogether, in time for the market.
Write and graph a system of inequalities that shows the possible numbers of hats and scarves Alex can bring to the craft market if he wants to bring at least 25 items. Identify three (3) possible combinations, and say which he should
choose.
The three (3) possible combinations are
hats = 10, scarves = 30hats = 10, scarves = 20hats = 20, scarves = 20Alex should 20 hats and 20 scarves
How to find the possible combinations Alex can bring to the marketLet the number of scarves be x and y be the number of hats
He can make at most 20 hats and 30 scarves, but no more than 40 items altogether
x ≤ 20
y ≤ 30
x + y ≤ 40 (in time of market)
x + y ≥ 25
The possible combinations are
1 ⇒ x = 10, y = 302 ⇒ x = 10, y = 203 ⇒ x = 20, y = 20He should choose the third option x = 20, y = 20 this allows him to take more products to the show
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Solve 8x + c = kfor x.
O A. X = B(k+c)
O
B. x - k-c
8
O
C. x = kt c
8
O D. X = B(k- c).
The main answer to the problem 8x + c = k for x is:
x = (k - c)/8
Isolating x on one side of the equation by performing inverse operations. First, subtract c from both sides:
8x + c - c = k - c
8x = k - c
Now, we need to get x by itself. To do this, we'll divide both sides of the equation by 8:
8x / 8 = (k - c) / 8
x = (k - c) / 8
So, the main answer is x = (k - c) / 8.
This corresponds to option D in your list of choices:
D. x = (k - c) / 8
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A 3 ft tree casts a 10 ft. shadow. How many feet long is the shadow of a 26 ft tall tree at the same time? If necessary, round to the nearest tenth.
Answer:
8 feet
Step-by-step explanation:
It is given that, a 3 ft tree casts a 10 ft. shadow. It means that 1 ft long shadow will cast by \(\dfrac{3}{10}\) feet long tree.
Let 26 ft tall tree will cast x feet long shadow. To find it using unitary method we get :
\(x=\dfrac{3}{10}\times 26\\\\x=7.8\ \text{feet}\)
or
x = 8 feet
So, 8 feet long is the shadow of a 26 feet tall tree.
1) Jenna deposited a $665.78 paycheck, a $100 birthday check, and $430 cash into her checking account.
Her original account balance was $288.90. Assuming the checks clear, how much was in her account after the
deposit was made?
Answer:
1484.68
Step-by-step explanation:
Answer:
75.11 + 29.64 = 104.75 - 180.47 = 75.72
Step-by-step explanation:
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4] A ship sails 80 km on a bearing of 55° and then changes course and sails 40 km on
a bearing of 132° By making a scale diagram find: -
a) The final distance of the port from the ship.
b) The final bearing of the port from the ship.
Answer:
Below
Step-by-step explanation:
Break each of the legs into vertical and horizontal components so you can add them :
Vertical
80 sin 55 + 40 sin 132 = 95.258 km
Horizontal
80 cos 55 + 40 cos 132 = 19.121 km
Use pythag theorem to calculate the distance from origin
d^2 = 95.258^2 + 19.121^2
show d = 97.16 km from origin
Angle will be arctan ( 95.258/19.121) = 78.65° <====this is the bearing of the SHIP from the PORT....the bearing TO the PORT FROM the ship will be 78.165 + 180 = 258.65°
4. You find the area of a capacitor plate by multiplying the length by the width. What is the area of a capacitor platewhose length is 3/8 inches and width is 3/8 inches?A. 49/64 square inchesB.63/74 square inchesC. 24/74 square inchesD. 64 square inches
The length is 3/8 inches and width is 3/8 inches.
It is also given that the area of a capacitor plate is obtained by multiplying the length by the width.
ExplanationTo find the area of a capacitor plate by multiplying the length by the width,
\(A=l\times w\)Substitute the values,
\(\begin{gathered} A=\frac{3}{8}\times\frac{3}{8} \\ A=\frac{9}{64}sq.in \end{gathered}\)AnswerThe area of capacitor plate is
\(\frac{9}{64}in^2\)Third-degree, with zeros of −3, −1, and 2, and passes through the point (1,8).
Answer:
y=-(x+3)(x+1)(x-2)=-x^3-2x^2+5x+6
Step-by-step explanation:
If the zeros are:
x1=-3
x2=-1
x3=2
then the function is:
y = a (x-x1) (x-x2) (x-x3) = a (x+3) (x+1) (x-2)
y = a (x^3+2x^2-5x-6)
To find the value for "a" we use the information that, if x=1, then y=8:
y = a (1+2-5-6) = a (-8) = 8 therefore a=-1
So:
y=-(x+3)(x+1)(x-2)=-x^3-2x^2+5x+6
please help me I'm being timed
Answer: 72 grams of tea leaves
Step-by-step explanation:
288/24 = 12
6 leaves per 24 ounces of fluid
12x6=72
How do you simplify this
-2 6
3. x · x
Answer:
13 • -2 = -26
Step-by-step explanation:
-13 + -13= -26
The radius r of a sphere is increasing at the uniform rate of 0.3 inches per second. At the instant when the surface area S becomes 100pi square inches, what is the rate of increase, in cubic inches per second, in the volume V?
The rate of increase in the volume V is 30π cubic inches per second when the surface area S becomes 100π square inches.
What is volume?
Volume refers to the amount of three-dimensional space occupied by an object or a substance.
To find the rate of increase in the volume V of a sphere when the surface area S becomes 100π square inches, we need to use the formulas relating the surface area and volume of a sphere to its radius.
The surface area S of a sphere is given by the formula:
\(S = 4\pi r^2,\)
where r is the radius of the sphere.
The volume V of a sphere is given by the formula:
\(V = (4/3)\pi r^3.\)
To find the rate of increase in volume with respect to time, we need to differentiate the volume formula with respect to time.
Given that the radius r is increasing at a uniform rate of 0.3 inches per second, we can write:
dr/dt = 0.3 inches per second.
Now, let's differentiate the volume formula with respect to time:
\(dV/dt = d/dt [(4/3)\pi r^3].\)
Using the power rule of differentiation, we get:
\(dV/dt = (4/3)\pi * 3r^2 * (dr/dt).\)
Simplifying further, we have:
\(dV/dt = 4\pi r^2 * (dr/dt).\)
Since we want to find the rate of increase in cubic inches per second, we need to express the volume in cubic inches.
Substituting the value of the surface area S = 100π square inches into the surface area formula:
\(100\pi = 4\pi r^2.\)
Dividing both sides by 4π, we get:
\(r^2 = 25.\)
Taking the square root of both sides, we find:
r = 5.
Now, we can substitute the value of r into the rate of increase formula:
\(dV/dt = 4\pi(5^2) * (0.3).\)
Simplifying the expression:
dV/dt = 4π(25) * 0.3.
dV/dt = 30π cubic inches per second.
Therefore, the rate of increase in the volume V is 30π cubic inches per second when the surface area S becomes 100π square inches.
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Riley collects rainwater in a large barrel that weighs 15 pounds. When there are 8 gallons of water in the barrel, the total weight is 73.8 pounds. When there is 20 gallons of water in the barrel, the total weight is 162 pounds. Write the equation that models this situation in slope intercept form.
179 pounds
Step-by-step explanation:
yan po makatulong po yan thank you
Which equation can you create with the given information? m=6, b=-2 A.) y=6x-2 B.) y=6x+2 C.) y=2x+6 D.) y=-2x-6
Step-by-step explanation:
Hey there!
Your answer is Option A.
Check all:
A. y = 6x-2
Comparing the equation with y = mx+b, we get;
m= 6
and b= -2
B. y= 6x+2
Comparing the equation with y= mx+b, we get;
m = 6
b= 2
C. y = 2x+6
Comparing the equation with y= mx+b, we get;
m= 2
b = 6
D. y= -2x-6
Comparing the equation with y= mx+b, we get;
m= -2
b= -6
Therefore, Option A is correct answer.
Hope it helps...
What is the percentage change from 5 to 2?
Answer:
the percentage change is a 60% change.
Step-by-step explanation:
A change from 5 to 2 represents a negative change (decrease) of -60%
Use the formula found below on this webpage to find the percent change by replacing the given values:
Percent change = New - Old
|Old|
× 100%
Percent change = 2 - 5
|5|
× 100% =
-3
5
× 100 = -60% (decrease)
Where: 5 is the old value and 2 is the new value. In this case we have a negative change (decrease) of -60 percent because the new value is smaller than the old value.
find the sum of all 2 digit multiples of 6
Answer:
The sum of all 2 digit multiples of 6 is 810
Step-by-step explanation:
12+18+24+30+36+42+48+54+60+66+72+78+84+90+96 = 810
Answer:
810
Step-by-step explanation:
2 digit multiples of 6 are 12,18,24...90,96
You can just add them on your calculator.
PLEASE HELP HURRY!!!
Answer:
C
Step-by-step explanation:
consistently goes down by 3.2 for the y value
2. Lindsay, who is the youngest member of the softball team at King's Fork High School, is 7
years less than one-third the age of the coach. If the coach is n years old, which expression
describes Lindsay's age?
The box plot represents the number of tickets sold for a school dance.
A horizontal line labeled Number of Tickets sold that starts at 8, with tick marks every one unit up to 30. The graph is titled Tickets Sold for A Dance. The box extends from 17 to 21 on the number line. A line in the box is at 19. The lines outside the box end at 10 and 27.
Which of the following is the appropriate measure of center for the data, and what is its value?
The mean is the best measure of center, and it equals 19.
The median is the best measure of center, and it equals 4.
The median is the best measure of center, and it equals 19.
The mean is the best measure of center, and it equals 4.
The appropriate measure of center for the data on the tickets sold is C. The median is the best measure of center, and it equals 19.
Why is the median best ?In a box plot, the median is represented by the horizontal line that divides the box into two equal parts. The median is the middle value of the dataset when it is ordered from smallest to largest.
The median is the best measure of center for a box plot. The median is represented by the line inside the box, which in this case is at 19 on the number line.
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Answer:
ccccccccccccccccccccccccc
Step-by-step explanation:
Find the area of this circle. Use 3 for T.
A = ar2
1 ft
[?] ft2
HELP!!
Solve each equation.
Answer:
what equation.?
Step-by-step explanation:
please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!
Answer:
805
Step-by-step explanation:
determine the periodic solutions, if any, of the system x˙ = y x p x 2 y 2 (x 2 y 2 − 2), y˙ = −x y p x 2 y 2 (x 2 y 2 − 2).
The periodic solutions of the system are:
(0, 0),
(±√2, ±√2).
These points represent periodic orbits in the phase space of the system.
To determine the periodic solutions, if any, of the system:
ẋ = yx^p(x^2y^2 - 2),
ẏ = -xy^p(x^2y^2 - 2),
we need to find values of x and y for which the derivatives ẋ and ẏ are equal to zero simultaneously. These points represent potential periodic solutions.Setting ẋ = 0 and ẏ = 0, we have:
0 = yx^p(x^2y^2 - 2),
0 = -xy^p(x^2y^2 - 2).
From the first equation, we can see that either y = 0 or x^2y^2 - 2 = 0.
If y = 0, then the second equation implies that x = 0. Therefore, (0, 0) is a solution.
If x^2y^2 - 2 = 0, then x^2y^2 = 2.
Taking the square root of both sides, we get xy = ±√2.Considering the second equation, we have -xy^p(x^2y^2 - 2) = 0.
Substituting xy = ±√2, we find that this equation holds true.
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to properly measure the volume of water in a calibrated glass device, such as a graduated cylinder, one should________
The lowest point should be used for measurement. To acquire a correct reading, students must read the meniscus at eye level. In order to read the meniscus at eye level, students need first set the graduated cylinder on the table and then stoop.
A measuring cylinder, often referred to as a graded cylinder, a cylinder measuring cylinder, or a mixing cylinder, is a piece of lab apparatus used to gauge the quantity of fluids, chemicals, or solutions used during a typical lab session. Compared to common laboratory flasks and beakers, graduated cylinders offer higher precision and accuracy. The graduated cylinder is a scientific tool that employs the metric system rather than the American standard system, so measurements are made in millilitres rather than ounces. The volume of an object or quantity of liquid is measured using a graduated cylinder, a common piece of laboratory glassware. It is a glass cylinder with side markings resembling those on a measuring cup, as its name suggests.
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A copy machine averages 210 copies in 5 minutes at the same rate how many copies can machine making 12 minutes
Answer:
504 Copies.
Explanation:
First you do 210 copies ÷ 5 minutes to tell you how many copies it will make per minute, that gives you 42 Copies per minute. Now lastly, you need to find how many it makes in 12 minutes. So if it does 42 Copies in one minute multiply 42 by 12 because there are 42 copies in one minute and you need to find how many it will make in 12 minutes so your answer is 42.
What is the area of the pentagon shown?
16 cm
15 cm
18 cm
20 cm
FILL THE BLANK.
in binary representation, any unsigned whole number n is encoded by a sequence of n 1 1s. _________________________
Unsigned whole numbers in binary are represented by a sequence of 1s, with the number of 1s equal to the value of the number itself.
In binary representation, numbers are expressed using only 0s and 1s. When dealing with unsigned whole numbers, the value of the number determines the length of the sequence of 1s used for its representation. For example, the decimal number 5 would be represented in binary as "11111" since it consists of five consecutive 1s. Similarly, the decimal number 10 would be represented as "1111111111" since it consists of ten consecutive 1s. This encoding scheme allows for a simple and efficient representation of positive whole numbers in binary.
Binary representation provides a concise and efficient way to represent numbers in computing systems. It is the foundation of digital communication and storage, enabling the manipulation and processing of numerical data. Understanding how numbers are encoded in binary is essential for working with computer systems, algorithms, and programming languages.
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Is the graph proportional?
Answer:
Yes, the graph represents a proportional relationship. No, the graph does not represent a proportional relationship. It is a straight line, but it does not intersect the point (0, 0).
Hey y’all pls help me.
Answer:
-b+2>-10
Step-by-step explanation:
Just ask.
Hope this helps! :D
a 15-foot statue casts a 20-foot shadow. how tall is a person who casts a 4-foot-long shadow? question 19 options: a) 5 feet b) 0.33 feet c) 3.75 feet d) 3 feet
Answer:
d
Step-by-step explanation:
the ratio of height : shadow of statue is 15 : 20 = 3 : 4
the ratio of height : shadow of person will also be 3 : 4
jet height of person be h , then
\(\frac{h}{4}\) = \(\frac{3}{4}\) ( cross- multiply )
4h = 12 ( divide both sides by 4 )
h = 3
then the person is 3 feet tall
Answer:
d) 3 feet
Step-by-step explanation: