Step-by-step explanation:
that kind of wording is always misleading.
please give my regards and comments to your teacher.
a square root has ALWAYS 2 solutions : a positive AND a negative one.
in that sense the negative solution to a square root is NOT an extraneous solution.
only any value of x < -10 (to make the argument of the square root negative) as solution would be extraneous.
so, if your teacher wants to say that only the positive solutions of a square root are allowed, it has to be said as an extra definition or by applying the "+" sign to the square root.
so,
x + 4 = sqrt(x + 10)
since the 2 solutions are already given to us, we only need to use them in the equation and see what happens.
x = -1
-1 + 4 = sqrt(-1 + 10)
3 = sqrt(9) = 3 (actually, it is ±3)
so, x = -1 is a real solution.
x = -6
-6 + 4 = sqrt(-6 + 10)
-2 = sqrt(4) = 2 (actually, it is ±2)
so, based on your teacher's expectation of only positive results of the square root (even though it was not stated),
x = -6 is an extraneous solution.
therefore, the third answer (c) is the "correct" answer.
but actually, formally, the second answer (b) is the truly correct answer.
Rita earns $19.00 per hour. If she gets a 5% raise, what will be her new hourly wage?
A. $19.05
B. $24.00
C. $19.95
D. $18.05
Answer:
C.
Step-by-step explanation:
Find 5% of 19:
19 x 0.05 = 0.95
0.95 + 19 = 19.95
answer is C. 19.95
Triangle A B C is shown. Angle B C A is a right angle. The length of hypotenuse A B is 26, the length of A C is 10, and the length of B C is 24.
Given right triangle ABC, what is the value of tan(A)?
Answer:
tan(A) = 12/5Step-by-step explanation:
Given a right angle triangle ABC.
If ∠BCA = 90°
the hypotenuse AB = 26
AC = 10 and BC = 24.
Using the SOH, CAH, TOA trigonometry identity, SInce we are to find tanA, we will use TOA. According to TOA;
Tan (A) = opp/adj
Taken BC as opposite side since it is facing angle A directly and AC as the adjacent;
tan(A) = BC/AC
tan(A) = 24/10
tan(A) = 12/5
Answer:
[tex]\ tan \ A = \dfrac{24}{10}[/tex]
Step-by-step explanation:
[tex]\sf Tan \ A = \dfrac{opposite \ side \ of \ angle \ A}{adjacent \ side \ of \ angle A}\\\\Tan \ A = \dfrac{BC}{AC}\\\\Tan \ A = \dfrac{24}{10}[/tex]
what is the minimum value of the function 3x^2 -4x +8
Step-by-step explanation:
f(x)=3x²-4x+8
f(1)=(3*1)²-4(1)+8
f(1)=3²-4+8
f(1)=9-4+8 or using BODMAS
f(1)=5+8 or f(1)=9-12
f(1)=13 or f(1)=-3
Find the 4th term of the geometric sequence whose first term is 3 and common ratio is 2.
The 4th term of the geometric sequence whose first term is 3 and the common ratio is 2 is 24.
What is a geometric sequence and how to find its nth terms?Suppose the initial term of a geometric sequence is a
and the term by which we multiply the previous term to get the next term is r then the sequence would look like
a, ar, ar², ar³,...., arⁿ
Thus, the nth term of such sequence would be aₙ = a₁ × r⁽ⁿ⁻¹⁾ (you can easily predict this formula, as for the nth term, the multiple r would've multiplied with initial terms n-1 times).
Given the first term of the sequence is 3, while the common ratio is 2, therefore, the fourth term of the geometric sequence can be written as,
aₙ = a₁ × r⁽ⁿ⁻¹⁾
a₄ = 3 × 2⁽⁴⁻¹⁾
a₄ = 3 × 2³
a₄ = 24
Hence, the 4th term of the geometric sequence whose first term is 3 and the common ratio is 2 is 24.
Learn more about Geometric Sequence:
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!!!!HELPPPP!!!! if cos theta = - square root 3 over 2 and pi < theta < 3 pi over 2, what are the values of sin theta and tan theta?
will mark Brainliest for correct answers .
i’m in a final pls help
Answer:
Option 4
Step-by-step explanation:
In Quadrant IV,
tan = +vecos = -vesin = -veIf cosθ = -√3/2, then :
sinθ = -1/2tanθ = √3/3What is the slope of the line passing through the points (2, 5) and (0, -4)?
Show all your work.
Leave your answer as a fraction
Answer:
slope = 9/2
Step-by-step explanation:
y2 - y1 / x2 - x1
-4 - 5/0- 2 = 9/2
Question 4 of 10
If a tree diagram were drawn to determine the number of possible outcomes
when choosing one of 3 salads, one of 5 entrées, and one of 9 desserts, how
many leaves would there be?
O A. 17
OB. 45
C. 135
Please help I’m not sure about this one x=106
Answer:
Question?
Step-by-step explanation:
where is the Question?
which is the graph of f(x)=3√x
Answer: The first graph
Step-by-step explanation:
It's the first one. I don't know how to explain, haha.
Which is a coeffecient
Answer:
B is a coefficient
Step-by-step explanation:
Coefficient of 2O2 is 2.
B = 2
Which is least? 1.26 ÷ 0.3 OR 7.84 ÷ 5.6
so clearly...the 2nd one is the least
hope it helps...!!!
Answer:
7.84 / 5.6 is least
Step-by-step explanation:
1. 1.26 / 0.3
= 4.2
2. 7.84 / 5.6
= 1.4
answer of 1. is 4.2 and 2. is 1.4
1.4 is less than 4.2
Please help thanks! Will give brainiest
Answer:
Colinear points: Points that lie on the same line.
Coplanar points: Points that lie in the same plane.
Plane: a flat, 2D surface with no height.
1. Three colinear points: A, B, E
2. Four coplanar points: A, B, C, E
3. A plane containing E: plane S
4. Two points and a line that lie in Plane T: Points F & G, Line L
5. Two planes that contain l: S and T
(50 + brainiest if correct!)
From each square we can construct a second square, whose area is double that of the first square.
Construct from the square abcd below a second square, whose area is double the area of the square abcd.
Answer:
So the first thought would be to make the length and width twice the size of the original square but this would actually cause us to multiply the area by 4.
The second thought was to raise one of the sides to be twice the length or width and that would give us the correct answer since we are just multiplying it by 2. If side AB is the only one that can move then we would just extend that side twice the original length.
Frank bought a pair of gloves for $9.95 and a hat for $5.25. What is the best estimate of much he spent?
$15.00
$10.00
$5.00
$25.00
Answer:
$
15.00
Step-by-step explanation:
Round the costs of the gloves and hat. $9.95 is very nearly $10. And even though $5.25 is over $5 , it is still very close. $10+$5 is $15. This is the estimate.
PLEASE HELP ASAP
what is an equation of the line that passes through the points (2,-3) and (2,6)
Answer:
x = 2
Step-by-step explanation:
The two points have the same x-coordinates, so lie on the same vertical line:
x = 2
solve the equation -8=7x+2/5
Answer:
-6/5 = x
Step-by-step explanation:
Multiply by 5 to get rid of fractions:
-40 = 35x + 2
Subtract by 2 to get all terms on one side:
-42 = 35x
Divide by 35 to get x term:
-42/35 = x
-6/5 = x
Please see attached question I am stuck on.
By looking at this problem:
⇒ must use trigonometric functions:
⇒ (look at image attached for further reference)
Let's solve:
For side 'a'[tex]sin(10)=\frac{a}{13}\\ a = 13sin(10)\\a=2.25743[/tex]
For side 'b'[tex]cos(10)=\frac{b}{13} \\b = 13cos(10)\\b = 12.80250[/tex]
Make sure to round your answer to four decimal points
Answer:
a = 2.2574b = 12.8025Hope that helps!
An animal shelter had 45 animals adopted over one week. The ratio of dogs to ferrets was 5:1. The ratio of cats to dogs was 9:5.
Select the diagrams that would represent the types of animals adopted.
Alt_text
Alt_text
Alt_text
Alt_text
Alt_text
Part B
How many of each type of animals were adopted?
ferrets,
dogs,
cats
Answer:
there are 3 ferrets,15 dogs,27 cats
Step-by-step explanation:
the ratio of the three
9:5:1
the ferrets,1/15 * 45= 3
the dogs,5/15 * 45= 15
the cats, 9/15 * 45=27
write 28% as a fraction
Answer:
28% as a fraction can be written in many ways. The most simplest way to convert a percentage to a fraction would just to put it over 100. For example, 50% would be 50/100 therefore 28% would be 28/100.
However, we can simplify that fraction even more by doing (28/4)/(100/4) which would give us 7/25.
Hope this helps!
Find the approximate values of the five-number summary for the data set represented by this box plot.
05 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Please hurry!!!
Answer: Minimum: 0
Quartile Q1: 22.5
Median: 50
Quartile Q3: 77.5
Maximum: 100
Step-by-step explanation:
The executive summary component of a business plan is to describe
a where the funds to start and operate your business will come from, when you expect to see
profit, and how much profit you expect to see
b. the size of the market, how your business will fit into the market, and how your business will
stand out from other businesses in the market
c. the 'big picture behind your business, what your business has to offer the consumer, and why
your business will be successful
d. how your business will be organized and what type of management or department structure
your business will have
Please select the best answer from the choices provided
ΟΑ
О В
ОС
Answer:
Executive summary describes the 'big picture behind your business, what your business has to offer the consumer, and why
Step-by-step explanation:
B is right
In parallelogram EFGH if GE=30 find GJ.
Answer:
GJ = 15
Step-by-step explanation:
ParallelogramGE = 30
GE is the diagonal.
In a parallelogram, the diagonal bisect each other
GJ = GE ÷ 2
= 30 ÷ 2
GJ = 15
Calculate (C ∘ F) for the month
To calculate temperature (C ∘ F) Celsius to Fahrenheit for the month, use the following expression.
[tex]^oC=\dfrac{5}{9}(^oF-32)[/tex]How to convert Celsius to Fahrenheit?
Temperature is the way to express the hotness or coldness of a body or object surface. The scales of measuring temperature are:
Celsius FahrenheitKelvinTo convert Fahrenheit to Celsius, we use the following formula.
[tex]^oF=^oC\times\dfrac{9}{5}+32[/tex]
The formula to convert Celsius to Fahrenheit is
[tex]^oC=\dfrac{5}{9}(^oF-32)[/tex]
Now, there is no data given in the problem. Thus, the above formula for any data can be used to convert the unit of temperature measurement.
Hence, to calculate temperature (C ∘ F) Celsius to Fahrenheit for the month, use the following expression.
[tex]^oC=\dfrac{5}{9}(^oF-32)[/tex]
Learn more about the temperature measurement here:
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The figure shows a planter Mrs Washington uses for flowers please help fast
Answer:
67.5 ft^3
Step-by-step explanation:
7.5 * 2 * 3.5 + 3 * 2.5 *2 = 67.5 ft^3
Are the triangles similar?
Answer:
No, because the sides lengths are not proportional.
Step-by-step explanation:
What is the SAS similarity theorem ?By definition, two triangles are similar if all their corresponding angles are congruent and their corresponding sides are proportional.
What is the AA similarity theorem ?If two angles of one triangle are respectively equal to two angles of another triangle, then the two triangles are similar.
They both have an angle of 70°This lies between sides of 6/9 and 9/18 respectively for the triangles6/9 = 2/3 and 9/18 = 1/2Hence, the sides are not proportionalThey are not similarRandy is starting a beehive so that he can have fresh
honey. He decides to check the current population of bees
in the hive by marking 160 bees. Later, Randy collects 240
bees and observes that 30 of them are marked. What is the
BEST estimate for the bee population?
Answer:
1,280
Step-by-step explanation:
Can someone help with this? I've been stuck on this for a while
Step-by-step explanation:
how is that math ?
anyway,
*♡ = O
●* = H
arrow up and filed triangle = E
arrow down and 3/4 circle = R
Which of the following is the correct factorization of the polynomial below?
A triangle has vertices T(3, 7), U(6, -6), and V(5, -9).
The image of the triangle has vertices T'(8, 1), U'(-5,
4), and V'(-8, 3).
Which transformations could have produced the
image?
OT(1.-2) ° Ty=x
Ory=x0 T(1, -2)
O Ta. -2) o Ro, 180°
O
O Ro. 180
Ta. -2)
Step-by-step explanation:
y=2x find the value of y and x
Twice the difference of a number and 6 is 5
Use the variable x for the unknown number
To rewrite a word equation as a numerical equation, we can recognize certain keywords and change them into numbers or operations.
twice = multiply by 2difference = subtract'a number' = let this be xis = equalsSolving the QuestionWe're given:
Twice the difference of a number and 6 is 5To solve for x, isolate the variable:
2(x-6) = 5
2x-12 = 5
2x = 17
x = [tex]\dfrac{17}{2}[/tex]
Answer[tex]\dfrac{17}{2}[/tex]