For which values of x will the rational expression below be unidentified? (x-1)(x+1)/x+2
Answers
Answer:
C
Step-by-step explanation:
Given
[tex]\frac{(x-1)(x+1)}{x+2}[/tex]
The denominator of the rational function cannot be zero as this would make it undefined.
Equating the denominator to zero and solving gives the value that x cannot be, that is
x + 2 = 0 ⇒ x = - 2 ← excluded value
Answer:
C. -2
Step-by-step explanation:
Any number divided by 0 is undefined. So, find the value of x that will make the denominator(x + 2) equal to 0:
x + 2 = 0
Subtract 2 from both sides of the equation to find the value of x:
x = -2
The only value of x that could make the denominator 0 is x = -2.
Hope this helps :)
Related Questions
PLEASEEEE HELPPP!!
Which property is illustrated by the equation
3x – 6y = 3(x - 2y)?
1. associative
2.Commutative
3.distributive
4.closure
Answers
Answer:
3. Distributive
Step-by-step explanation:
In the equation 3(x - 2y) if you distribute the 3 to the x and the -2 you would get 3x-6y.
The property illustrated in the equation is 3)Distributive
What is the Distributive property?Distributive law, also called distributive property, in mathematics, the law relating the operations of multiplication and addition, stated symbolically as a(b + c) = ab + ac; that is, the monomial factor a is distributed, or separately applied, to each term of the binomial factor b + c, resulting in the product ab + ac.
Given here, 3x-6y=3(x-2y)
Thus clearly 3 is distributed over x and 2y
Hence, The property illustrated in the equation is 3)Distributive
Learn more about the distributive property here:
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A turkey costs $1.05 per pound. They're going to be 15 people at Thanksgiving dinner. Plan for each person to eat two, 3 / 8 lb servings of turkey. How many pounds of turkey will you need to buy?
Answers
Answer:
11.25 pounds of chicken need to be bought
Step-by-step explanation:
Per person will eat:
3/8 * 2 = 3/4 = 0.75 pound
So if one person will eat 0.75 pound.
15 people will eat 15 * 0.75 = 11.25 pounds
how many numbers are in pi
Answers
Answer:
31 trillion digits
Step-by-step explanation:
Consider the graph of the function f(x)=10^x.
Answers
Using graph, the value of g(x) = 8 and the y- intercept at the point (0,-1).
What is graph?A graph is a "mathematical representation of a network and it describes relationship between lines and points".
According to the question,
f(x) = [tex]10^x[/tex]
g(x) = -4f(x) +12
g(x) = -4 (10ˣ) +12
The graph intersect at y-axis then x-coordinate should be zero.
Let take any two points on y-axis (0, 1) and substitute g(0) = -4 (10⁰) + 12
= 8
Hence, the value of g(x) = 8 and the y- intercept at the point (0,-1).
Learn more about graph here
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Which statement is true for this linear equation?
5x + 6 = 26
It has 2 constants, 1 coefficient, and 1 variable.
It has 2 constants, 1 coefficient, and 2 variables.
It has 1 constant, 2 coefficients, and 1 variable.
It has 3 constants, no coefficients, and no variables.
Answers
Answer:
It has 2 constants, 1 coefficient, and 1 variable.
The given linear equation 5x + 6 = 26 has 2 constants, 1 coefficient, and 1 variable.
What is a variable?A quantity that may assume any one of a set of values.
What is a constant?A value or number that never changes in expression
What is a coefficient?A numerical or constant quantity placed before and multiplying the variable in an algebraic expression.
Given equation is 5x + 6 = 26
variables is "x" i.e. 1
constants are 6, 26 i.e. 2
coefficient is 5 i.e. 1
Thus the given linear equation 5x + 6 = 26 has 2 constants, 1 coefficient, and 1 variable.
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12 is 90% of what number?
with steps
Answers
Answer:
Let's understand the concept:-Here 12 is 90% of a number. So we can say that 90% of That number is 12 .In this way we can get the the number Solution:-Let,
the number=x
According to the question ,[tex]{:}\longrightarrow[/tex][tex]\sf 90\% \:of \;x=12 [/tex]
We know 90%=90/100so add it[tex]{:}\longrightarrow[/tex][tex]\sf {\dfrac {90}{100}}\times x=12 [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf {\dfrac {90x}{100}}=12 [/tex]
Now use cross multiplication method[tex]{:}\longrightarrow[/tex][tex]\sf 90x=12\times 100 [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf 90x=1200 [/tex]
Now interchange sides .[tex]{:}\longrightarrow[/tex][tex]\sf x={\dfrac {1200}{90}}[/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf x={\dfrac {200}{15}}[/tex]
Answer will come in decimals so we take approximate value.[tex]{:}\longrightarrow[/tex][tex]\sf x=13.3 [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf x=approximately \:13[/tex]
[tex]\therefore[/tex]The number is 13.
Is my teacher wrong or my answer is wrong
The one in the box is the teacher answer
By the second one is my answer
Answers
Answer:
i would say you bc the teachers alway right
Step-by-step explanation:
The two lines
graphed on the
coordinate plane each
represent a linear
equation. Which one of
the following ordered
palrs simultaneously
satisfies both linear
equations?
A.(-7,2)
B.(7,1)
C.(2,-7)
D.(5,5)
Answers
Answer:
yewhuh
Step-by-step explanation:
if u missed my first on here: If you can guess my number from 1-10 in your first try ill give brainliest :) but if you are like 1-2 numbers away, (soooo close) I'll still give you a brainliest
Answers
Answer:
7
Step-by-step explanation:
I think 7...... so yeah
Answer:
5 I think think
Step-by-step explanation:
5 I think
A 3-column table with 4 rows. Column 1 is labeled Rectangle with entries A, B, C, D. Column 2 is labeled Width with entries 3 feet, 6 feet, 15 feet, 60 feet. Column 3 is labeled Length with entries 5 feet, 10 feet, 25 feet, 90 feet. Which rectangle is not an enlargement of rectangle A? A B C D
Answers
Answer:
The answer is d
Step-by-step explanation:
Answer:
it D
Step-by-step explanation:
hope it helps
Help me and i will mark as brainliest
Answers
Step-by-step explanation:
BAC=56
ACB=62
ADC=62
COB=112
Which of the following is a solution of 4x^2=-9x-4
Answers
Answer:
(-9+√17)/8
Step-by-step explanation:
its an example of quadratic
one large papaya weighed 5 kg if 20 children shared it by cutting into pieces , how much would each piece weight?
Answers
Answer:
0.25 kg
Step-by-step explanation:
This is a division problem, assuming the papaya is cut evenly.
[Divide]
5 kg / 20 children = 0.25 kg
5kg/20=0.25 kg.
The weight of each piece is 0.25 kg
Can anyone help me on questions 1-6 and 7-9? If it helps, the blocked document lesson name is lesson 1-6
Answers
PLS HELP IM GOING TO GET KICKED OFF MY SOCCER TEAM IF I DONT PASS MATH
Answers
Answer:
Answer is x = -1
Step-by-step explanation:
Answer:
-1
Step-by-step explanation:
i wish that you stay in your soccer team
Evaluate the expression: 0.5f - 2.3g where f = 12 and g = 2
Answers
Answer:
1.4
Step-by-step explanation:
0.5f-2.3g where f=12 and g=2
substitute 12 in for f and 2 in for g and solve
0.5(12)-2.3(2)
6-4.6=1.4
Answer:
-4.6g + 6
Step-by-step explanation:
(0.5)(12)−2.3g(2)
=6+−4.6g
Answer:
=−4.6g+6
Mr. Blanco used 15.75 yards of fabric to make 7 costumes for the school play. How many yards of fabric did he use per costume?
Answers
Answer:
2.25 yards per costume
Step-by-step explanation:
if you want to find the unit rate of something put it into a fraction which is also considered dividing. Like if you want to figure out miles per hour or ounces per cup, just divide miles by hour, or divide ounces per cup to get your final answer. In this case divide 15.75 yards of fabric by 7 costumes to get your answer.
Answer:
2.25
Step-by-step explanation:
Please answer ASAP!!! :)
.-. .-. .-. .-. .-. .-.
Answers
Answer:
I highly recommend that it must be the second story
Someone please help me, please
Answers
What is the equation of a line in slope-intercept form if the slope is -8 and the y-intercept is 5
Answers
Answer:
y = -8x + 5
Step-by-step explanation:
5x+2y=29
x+4y =13
i don’t know that answer
Answers
Answer:
x=71/9, y= -47/9
Step-by-step explanation:
5x+2y=29
x+4y=13 subtract 4y from both sides
x= -4y+13 substitute on the first one
5( -4y+13) + 2y = 29 distribute in parenthesis
-20y - 65 +2y =29 add 65 to both sides
-20y +2y = 29+65 combine like terms
-18y = 94 divide by -18 both sides
y= 94/-18= -47/9
substitute y =-47/9 in x=-4y+13
x=-4(-47/9)+13=(188/9)+13=188+117/9=71/9
How many teaspoons are in 200 milliliters? 1 tsp = 5 ml 200 mL = [?] tsp
Answers
Answer: 40
Step-by-step explanation:
using dimensional analysis ( you might not have learned this yet, but it's basically multiplying things to cancel out units)...
200 ml * (1 tsp/ 5 ml) = 40 tsp
200 milliliters is equal to 40 teaspoons.
Here, we have,
given that,
1 tsp = 5 ml
so, we get,
If 1 teaspoon (tsp) is equal to 5 milliliters (ml),
then to find how many teaspoons are in 200 milliliters (mL),
we have to divide 200 by 5:
so, we get,
200 mL / 5 mL/tsp
= 40 teaspoons (tsp)
i.e. 200 ml * (1 tsp/ 5 ml) = 40 tsp
So, 200 milliliters is equal to 40 teaspoons.
learn more about division here
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Pam, Wesley, and Diana added up how many miles they walked together.
In one week, they walked 38 miles.
Of those miles, Pam walked 13.
How many miles did Diana walk?
Answers
Answer:
12.5
Step-by-step explanation:
If they walked 38 miles and Pam walked 13, subtract 38 from 13, you then get 25. Then, divide that by 2. 25 divided by 2 is 12.5. That is your answer, I believe. Please make this the brainliest answer.
Rewrite the function by completing the square
h(x)=4x^2+4x+1
Answers
Answer:
[tex]h(x) = 4(x+\frac{1}{2})^{2}[/tex]
Step-by-step explanation:
[tex]h(x)=4x^2+4x+1\\h(x)=4(x^2+x+\frac{1}{4}) \\h(x)=4(x^2+x+\frac{1}{4})\\h(x) = 4(x+\frac{1}{2})^{2}[/tex]
HELP PLEASE ITS DUE TOMMOROW AND I HAVE 2 TESTS TO TAKE TODAY D:
Directions: Find the value of each variable (x and/or y)
Answers
Answer:
x=25
x=47
y=25 x=10
y=20
Step-by-step explanation:
2x+10=60
-10 -10
2x=50
2x/2=50/2
x=25
2x+6=100
-6 -6
2x=94
2x/2=94/2
x=47
5y-25=100
+25 +25
5y=125
5y/5=125/5
y=25
11x-30+100=180
11x+70=180
-70 -70
11x=110
11x/11=110/11
x=10
7y-10=3y+70
+10 +10
7y=3y+80
-3y-3y
4y=80
4y/4=80/4
y=20
hopefully this helps :)
The perimeter of a triangle is 51 cm. The lengths of its sides are x cm, x + 2 cm,
and x + 4 cm. What is the length, in cm, of the longest side of the triangle?
Answers
Step-by-step explanation:
16, 17 and 18
Explanation:
a
+
b
+
c
=
51
a
+
a
+
1
+
a
+
2
=
51
3
a
=
48
a
=
16
b
=
17
c
=
18
Explanation:
a
+
bAnswer:
+
c
=
51
a
+
a
+
1
+
a
+
2
=
51
3
a
=
48
a
=
16
b
=
17
c
=
18
Write a justification for each step
Answers
Tell whether the ratios form a proportion. 1/3, 7/21
Yes
or
No
(also i give out branislist lol)
Answers
Answer:
Yes
Step-by-step explanation:
7/21 -> Divide both sides by 7 which gets you 1/3
Answer:
i would say yes
my work :
so i did 21 times 1 which is 21.
Tben i did 3 times 7 which is also 21.
So in conclusion i would say yes but i can't guarantee that
I don’t know this, solve for x
Answers
Answer:
x = 62/61Step-by-step explanation:
120 + 61x -2 = 180 ( sum of opposite angles)
118 + 61x =180
61x= 62
x = 62/61
The discount price of a hat is $18. What is the regular price?
Answers
Without that value, we can't solve your problem, unless you are looking for an algebraic equation.