Answers
Answer:
C. x-2
Step-by-step explanation:
x² + 7x - 18 = 0
the factor must be p and q from the form.of
(x+p)(x+q) = 0
then find the value of p and q by this rules
p + q = 7
p x q = -18
p = 9
q = -2
(x + 9)(x + (-2)) = 0
(x+9)(x-2) = 0
Answer:
c.) [tex](x-2)[/tex]
Step-by-step explanation:
The given expression is written in the form [tex]ac^2+bx+c[/tex]. To factor, find two numbers whose sum is b and whose product is c:
_×_=-18
_+_=7
Use -2 and 7:
-2×9=-18
-2+9=7
Substitute the two numbers for b:
[tex]x^2-2x+9x-18[/tex]
[tex](x^2-2x)+(9x-18)[/tex]
Factor out common terms. The common term in the first parentheses is x and the common term in the second is 9:
[tex]x(\frac{x^2-2x}{x} )+9(\frac{9x-18}{9})\\\\x(x-2)+9(x-2)[/tex]
Cancel out one of the parentheses since they have the same terms and plug the factored numbers in:
[tex](x-2)(x+9)[/tex]
:Done
Check Your Work:
To see if the given factored form is true, simplify it using FOIL:
First, Outside, Inside, Last
[tex](x-2)(x+9)[/tex]
Multiply the first terms:
[tex]x*x=x^2[/tex]
Multiply the terms on the outside:
[tex]x*9=9x\\\\x^2+9x[/tex]
Multiply the inside terms:
[tex]-2*x=-2x\\\\x^2+9x-2x[/tex]
Multiply the last terms:
[tex]-2*9=-18\\\\x^2+9x-2x-18[/tex]
Combine like terms:
[tex]x^2+(9x-2x)-18\\\\x^2+7x-18[/tex]
Therefore, the factored form is true.
Related Questions
helpppp i need the answer fast it’s timed
Answers
What is the solution to 31-3x + 9) = -18?
Ox=-5
O x=5 or x= 1
O x= -5 or x=1
O no solution
Hurry please
Answers
Step-by-step explanation:
31-3x+9=-18
31-3x+9+18=0
58-3x=0
-3x=-58
x=-58/-3
x=19.33
so the answer is no solution
not sure about the answer
did anyone know that 11+11 is the same thing as 10+10
because 11+11=22
Answers
:0 my brians hurt
Also That’s cool but did you know lliberty mutual customizes your carinsurance topay for what you need
What is RU?
A.20
B.30
C.12
D.15
Answers
Answer:
a
Step-by-step explanation:
The segment RT is a perpendicular bisector and means Δ RSU is isosceles, then the 2 legs are congruent, that is
RS = RU , substitute values
8x = 6x + 5 ( subtract 6x from both sides )
2x = 5 ( divide both sides by 2 )
x = 2.5
Thus
RU = 6x + 5 = 6(2.5) + 5 = 15 + 5 = 20 → a
PLS HELP IM SO STUCK
if daisy mixes 50ml of oragne juice to 200ml. what is the ration of orange juice to water
Answers
Answer:
1 : 4
Step-by-step explanation:
The ratio of
orange : water
= 50 : 200 ( divide both parts by 50 )
= 1 : 4
dam bought 6 deli sandwiches for
$5.75 each. About how much will the
sandwiches cost?
Answers
6 x $5.65 = $33.9
X ≤ 2 x ≥ 2 -4 < x ≤ -2 -4 < , x, ≤ -2 -4 ≤ x ≤ -2 What is the domain of the function?
Answers
Answer:
really hard and strong but am interested
*
4/3*3.14*2.6*2.6*2.6
Answers
Answer:
73.58
Step-by-step explanation: This is just a guess so I may be wrong. So when I put this into the calculator, it is showing a big number: 73.58485333 so what I did was round it to the nearest hundredths which is 73.58 so hope this helps somebody :)
689858/9375 or 73.584853
Step by step explanation:
4/3*3.14*2.6*2.6*2.6 - original equation
4/3*157/50*13/5*13/5*13/5 - convert decimals into fractions
2/3*157/25*13/5*13/5*13/5 - reduce the numbers with the GCF (greatest common factor) 2
689858/9375 - multiply the fractions
12 - x
If x = 7, what is the value of the expression above?
Answers
Answer:
5
Step-by-step explanation:
12-7=5
Answer:
5
Step-by-step explanation:
We know that x is equal to 7. That means we can replace x with this value. This makes our new expression:
12 - 7
12-7 is equal to 5, so this expression will equal 5 when x = 7.
If this is this then what is what
Answers
Answer:I feel like I should understand this
Step-by-step explanation:
Carl's cats weigh a total of 12 kg (kilograms). Bo weighs 5 1/2kg. Tommy weighs 2 1/3 kg. How much does Suzi weigh?
Answers
Answer:
5 1/6 kilograms is the answer I think
bruh, who else has exams?
Answers
Answer:
I have exams too well cba's
Step-by-step explanation:
Answer:
Girl I have exams I don't like them
Step-by-step explanation:
WILL GIVE BRAINLLIEST
9 is 10% of what number
Answers
Answer: the answer is 90 bro
Step-by-step explanation:
please help. thank you
Answers
Answer:
ur welcome
Step-by-step explanation:
Answer is A
bigail
The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. Starting with 195 grams of a
radioactive isotope, how much will be left after 5 half-lives?
Use the calculator provided and round your answer to the nearest gram.
grams
Answers
Answer:
divide 195 by 2 , 5 times. Or 195 × 0.5^5
Find cot 0 if tan 0 = 2
Answers
Answer:
1/2
Step-by-step explanation:
cot0=1/tan0
plug in tan0=2
cot0=1/2
find the next 2 terms in this sequence
Answers
Hope this helps
HELPPPPPPP PLEASE I HAVE TO SUBMIT IN 20 MINS!!!!!!
Answers
5. 4-2sqrt(10) and 4+2sqrt(10)
6. (x-8)^2 -62
Which of the following is written in a scientific way?
Answers
Answer:
Both B and C, but I am not sure about just one answer.
Step-by-step explanation:
Find the solution of
−
6
(
2
x
+
1
)
=
54
.
Answers
Answer:x-5
Step-by-step explanation:
-6(2x+1)=54
Distribute:
-12x-6=54
Add 6 on both sides:
-12x-6+6=54+6
-12x=60
Divide 12 on both sides:
-12x/-12=60/-12
x=-5
Kedwin can watch movies at home in two ways. He can order unlimited online movies for $10 a month. He could also go to the local movie rental store and rent 5 movies for $4.00. The system representing this scenario is graphed below.
How many movies does Kedwin need to rent each month to make the online option a better deal?
a. 10 movies per month
b. 10.40 movies per month
c. 12.5 movies per month
d. 13 movies per month
Answers
Answer:
I believe the answer is D.)13 movies per month.
Step-by-step explanation:
Answer:
D. 13 movies per month.
Step-by-step explanation:
Can someone please help me? If it is correct I will give you Brainliest
Thank you
Answers
Answer:
8(2p-3)
Step-by-step explanation:
The 2 equations map to the same line.
3.41 rounded to the nearest tenth please help
Answers
Anything under 5 it stays the same and anything over 5 it goes up one
Answer:
3.4
Step-by-step explanation:
tell whether the ordered pair is a solution to the system of inequalities
Answers
Answer:
Yes, it is
Step-by-step explanation:
The solution to the inequality are the sets of points that lie where we have the shaded part
The coordinates (3,0) lie on the shaded part and thus will be a solution to the set of inequalities
How do you do this? Please give an example to #1 and explain thoroughly please. I have asked multiple times and gotten answers I do not understand! 20 pts. Pleaseee help
Answers
Answer:
y=2x
Step-by-step explanation:
y = kx is the format of the graph we are looking for (as told in the instructions) where k is the variable we are supposed to find (like y = x, y=2x, y=3x, etc)
Note that as x increases by 1, y increases by 2. We can see that by writing a table of the points of points that the line given intersects (picture below). We can see that by the values of the x-axis and the y-axis. Why does this happen? This is because y =2x for each value of x. We notice that in our table.
Therefore, the equation is y=2x. I hope this helps! If you still have questions, ask me in the comments!
What is an equation of the line that passes through the point (-2, -6) and is
parallel to the line x + 2y = 8?
Answers
Answer:
The equation of new line is: [tex]\mathbf{y=-\frac{1}{2}x-7}[/tex]
Step-by-step explanation:
We need to write an equation of the line that passes through the point (-2, -6) and is parallel to the line x + 2y = 8
We need to find slope m and y-intercept b for the new line.
First we need to find slope m of the new line.
The given line x+2y=8 is parallel to new line.
When lines are parallel, there slope is same.
First writing equation in slope-intercept form: [tex]y=mx+b[/tex] where m is slope and b is y-intercept
[tex]x+2y=8\\2y=-x+8\\y=-\frac{1}{2}x+\frac{8}{2}\\ y=-\frac{1}{2}x+4[/tex]
Now comparing with [tex]y=mx+b[/tex] the slope is : [tex]m=-\frac{1}{2}[/tex]
Now finding y-intercept b
Using point (-2,-6) and slope [tex]m=-\frac{1}{2}[/tex] we can find y-intercept
[tex]y=mx+b\\-6=-\frac{1}{2}(-2)+b\\-6=1+b\\b=-6-1\\b=-7[/tex]
So, we get y-intercept b = -7
Now the equation of required line having slope [tex]m=-\frac{1}{2}[/tex] and y-intercept b = -7 is:
[tex]y=mx+b\\y=-\frac{1}{2}x-7[/tex]
So, the equation of new line is: [tex]\mathbf{y=-\frac{1}{2}x-7}[/tex]
The two tables below show the amount of tip, y, included on a bill charging x dollars.
Restaurant A
х
10
20
30
5
Restaurant B
х
25
50
75
y
1
2.
3
✓x
10
15
Which compares the slopes of the lines created by the tables?
O The slope of the line for Restaurant B is 5 times greater than the slope of the line for Restaurant A.
O The slope of the line for Restaurant B is 2 times greater than the slope of the line for Restaurant A.
The slope of the line for Restaurant B is 5 times greater than sie slope of the line for Restaurant A.
The slope of the line for Restaurant B is 10 times greater than the slope of the line for Restaurant A.
Answers
Answer:it’s B I did the test
Step-by-step explanation:
What's the answer? I need help asap
Answers
The two triangles are congruent through AA (angle-angle proportionality theorem) therefore all the sides are congruent to each other.
In this case:
2y = 5y - 7
2y - 5y = -7
-3y = -7
y = -7/-3
y = 7/3
1 2/3 - (-5 2/3) plsssssssssssssss helppppppppppppppppp
Answers
Answer:
[tex]7\frac{1}{3}[/tex]
Step-by-step explanation:
Answer:
i think its 7 1/3 but i may be wrong check that befoer u answer- i did this stuff like 2 years ago
Step-by-step explanation:
please help me on this! will give you brainliest, ty:,
Answers
Answer: 4^9
Step-by-step explanation:
4^-7 is just 1/4^7 so this is equal to 4^2 divided by 1/4^7. Dividing by a fraction is the same thing as multiplying by its reciprocal (just flip the fraction). So this whole equation is equal to 4^2 multiplied by 4^7. And when you multiply two exponents with the same base, the exponents are just added. So, your answer should be 4^9. Hope this helps! :)