Answers
The answer for the first question is A
The answer the second question is D
Step-by-step explanation:
so, let's look at the options.
A. (x+3)/x = 3
that hurts already by just looking at it.
but let's check anyway :
x + 3 = 3x
3 = 2x
and that is only true for one value of x (3/2), but not in general.
so, this is wrong.
B. (x²+5)/5 = x² + 1
x² + 5 = 5x² + 5
x² = 5x²
that is only true for one value of x (0), but not in general.
so, this is wrong.
C. (2x+7)/(2x+9) = 7/9
9(2x+7) = 7(2x+9)
18x + 63 = 14x + 63
4x = 0
that is only true for one value of x (0), but not in general.
so, this is wrong.
D. (-5x - 10)/(x+2) = -5
-5x - 10 = -5(x + 2) = -5x - 10
now this is true in all cases, so this is correct.
make simple :
(a² - 4a + 4) / (a² - 4)
with a little bit of experience you see right away that
a² - 4a + 4 = (a - 2)²
as we know from the generic squaring
(a - b)² = a² - 2ab + b² : a perfect fit.
and
(a² - 4) = (a + 2)(a - 2)
as we know from the generic factor multiplying
(a+b)(a-b) = a² + ab - ab - b² = a² - b² : a perfect fit.
so, the given expression is actually
(a - 2)² / ((a - 2)(a + 2)) = ((a-2)(a-2)) / ((a-2)(a+2))
and so, after eliminating one (a-2) term in the numerator and in the denominator the following remains :
(a - 2) / (a + 2)
and that is answer A
Related Questions
will give brainliest
f(x) = 2x - 4
g(x) = 4x + 5
Find (fºg)(x)
Answers
9.
3
Here is a recipe for making 10 chocolate chip cookies.
Chocolate Chip Cookies
Makes 10 cookies.
100 g of flour
60 g of sugar
50 g of margarine
40 g of chocolate chips
g
2 eggs
Work out the amounts needed to make 15 chocolate chip cookies.
Answers
Answer:
you will half the recipe, so
50g flour
30g sugar
25g margarine
20g chocolate chips
1 egg
then add together. recipe for 15 cookies will be;
150g flour
90g sugar
75g margarine
60gr chocolate chips
3 eggs
uh so im kind of in a hurry rn and need these 3 done, my brain isnt functioning and ive forgotten how to do this, an explanation would be fine but its not needed, 70 points to the person that can solve these!
Answers
Answer:
1: 25 3: 15.5
Step-by-step explanation:
1: divided 16 into 80, then multiplied 5 by 5.
3: found the simplified version of 120:20, it was 6:1, then I divided 6 into 93.
PLEASE HELP!! Which grabh does NOT represent a function?
Α) Α
B) B
C) С
D) D
Answers
Answer:
The answer is B!
Step-by-step explanation:
Using the vertical line test, two points meet while up and down. It'd be B.
Andrea has 473 scented stickers in her sticker book. How many tens of stickers does Andrea have?
7
40
47
70
Answers
Answer:
47 is the correct answer.
Step-by-step explanation:
Answer:
47
Step-by-step explanation:
divide 473 by 10
473 divided by 10 = 47
HELP PLEASE, LOOK AT PICTURE FOR WHOLE PROBLEM.. PLEASE ANSWER QUICK I DON'T HAVE MUCH TIME LEFT TO ANSWER
Answers
Answer:
2[tex]\sqrt{8}[/tex]
Step-by-step explanation:
According to Euclidian theorem :
h^2 = 4*8
h^2 = 32 find the root for both sides
h = 2[tex]\sqrt{8}[/tex]
How do I find x in this ?
Answers
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
The Correct choice is ~
[tex]x = 450[/tex]Refer to attachment for solution ~
You have already traveled 25 miles. If you continue driving at the same speed, x miles per hour, for 5 more hours, you will travel y total miles. Which equation shows how x and y are related?
A. 5x + 25 = y B. 25 – y = 5x
C. 25x + 5 = y D. 25 – 5x = y
Answers
25 miles is the constant. x is the changing factor. x miles per hour for 5 hours is 5x. y is the total amount. This means that our formula is going to be A) 5x + 25 = y.
All of the other options are incorrect.
I hope this helps! :)
WILL MARK BRAINLIEST IF YOU ANSWER BOTH QUESTIONS WITH SOLUTION
Answers
Answer:
1. = 3xy + x - 2y - 4
2. = d^2(2c^3-8c^2d+3d^2)
Step-by-step explanation:
= 9x^2y^2 + 3x^2y - 6xy^2 - 12xy/3xy
First factor the top equation ….
= 3xy(3xy + x - 2y - 4)/3xy
If the top and the bottom both carry 3xy, you can cancel out both of them leaving you with ….
= 3xy + x - 2y - 4
= -16c^6d^6 + 64c^5d^7 - 24c^3d^8/-8c^3d^4
First factor the top equation ....
= -8c^3d^6(2c^3-8c^2d+3d^2)/-8c^3d^4
If the top and the bottom both carry -8c^3 you can cancel out both of them leaving you with ….
= d^6(2c^3-8c^2d+3d^2)/d^4
Apply the exponent rule with d^6 ....
= d^4d^2(2c^3-8c^2d+3d^2)/d^4
cancel out d^4 ....
= d^2(2c^3-8c^2d+3d^2)
Triangle DEF is a scale drawing of triangle ABC.
What is the scale factor?
Answers
Step-by-step explanation:
every line uses the same factor.
a factor is something you multiply with.
so, what was the factor that turned 9 into 3 ?
9 × x = 3
x = 3/9 = 1/3
that is the scale factor.
Paul and Kelly are throwing darts at the hexagonal dartboard shown below. Paul told Kelly that if they throw darts at the board 100 times, of them should hit a 5.
If the prediction holds true, approximately how many times would their darts hit a 5?
Answers
Shown & Given:
The dartboard holds 5 in the maximum space.
Known:
Out of 100, it is know that they will hit 5 more than 50 times.
Possible Answers:
55, 66, or 77.
The most likely one is:
66
Which equation has the same solution as 7x−14=21?
Answers
Answer:
2x=10
Step-by-step explanation:
7x-14=21
x=5
2x=10 (divide both sides by two)
2x/2 10/2
x=5
Yky. we'd to provide the other options but to do this you need to +14 to both side. 21+14 then -14+14 cancel. so it's now
7x=35 then you divide 7 in both sides 7 cancels 35/7 =5
x=5
10 students volunteer to help fold paper stars for a charity project. If an additional 5 students help out, they will be able to finish the job 3 days earlier. The number of days required to finish the job is inversely proportional to the number of students who help out. Find the additional number of students needed to help out in order to finish the job 4 days earlier.
Answers
Answer:
Above is the step-by-step solution.
20 points solve (x-3)(x^2+3x+9)=37
Answers
Answer:
the answer is x = 4.
1. use the quadratic formula.
2. use a coordinate plane to check your answer.
hope this helps.
Answer:
x = 4
Step-by-step explanation:
(x - 3)(x² + 3x + 9) = 37 ← distribute left side
x³ + 3x² + 9x - 3x² - 9x - 27 = 37 , simplify left side by collecting like terms
x³ - 27 = 37 ( add 27 to both sides )
x³ = 64 ( take cube root of both sides )
x = [tex]\sqrt[3]{64}[/tex] = 4
The equation y = -4X -1 Has a slope of _______ possible answer choices: -4,-1, no slope and 0) and a y-intercept of possible answer choices: -4, -1 0 and no y-intercept)_______?
Answers
Answer:
slope = - 4 , y- intercept = - 1
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - 4x - 1 ← is in slope- intercept form
with slope m = - 4 and y- intercept c = - 1
Answer:
-4 then -1
Step-by-step explanation:
The number behind the x value is the gradient and the last number is the y - intercept.
please answer it i need help
Answers
This is karma for doing this to some one else :)
regdcd gvfd vcds xgrcd xre dse dxf crdx vcfx gvf c fcvr fvcrdgbv
LeAnnne has $4 in dimes and nickels. She has 10 more dimes than nickels. How many nickels does she have?
Answers
Answer:
21 she has 21 nickels
Step-by-step explanation:
Googel
The number of nickels LeAnne has 20 and the number of dimes LeAnne has 30.
Given that, LeAnnne has $4 in dimes and nickels.
Let the number of dimes be d and the number of nickels be n.
In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
She has 10 more dimes than nickels.
That is, d=n+10
So, 0.05n+0.10d=4
The solution of an equation is the set of all values that, when substituted for unknowns, make an equation true.
5n+10(n+10)=400
5n+10n+100=400
15n=300
n=20
d=n+10
d=30
Therefore, the number of nickels LeAnne has 20.
To learn more about an equation visit:
https://brainly.com/question/14686792.
#SPJ3
Diana made 143 treats for her visit to the nursing home. There are 37 patients and she wants each person to get the same number of treats. How many more treats will she need to make in order for each patient to receive 4 treats?
Answers
D, she needs to make 5 more treats.
Answer:
D) 5 more treatsStep-by-step explanation:
Number of required treats:
37*4 = 148Remaining number of treats:
148 - 143 = 5Correct choice is D
A computer can download 250 megabyte (MB) of a movie file in 25 seconds thenHow long does the computer take to download the whole file of size 1.8 GB?
Answers
1.8 * 1000=1800/250*25=180
thats the answer 180seconds
Figure ABCD is transformed to figure A prime B prime C prime D prime, as shown: A coordinate grid is shown from negative 5 to 0 to 5 on both x- and y-axes. A polygon ABCD has A at ordered pair 2, 3, B at ordered pair 4, 4, C at ordered pair 3, 1, D at ordered pair 2, 1. A polygon A prime B prime C prime D prime has A prime at ordered pair negative 1, 3, B prime at ordered pair negative 3, 4, C prime at ordered pair negative 2, 1, D prime at ordered pair negative 1, 1. Which of the following sequences of transformations is used to obtain figure A prime B prime C prime D prime from figure ABCD? Counterclockwise rotation by 90 degrees about the origin followed by a translation to the right by 1 unit Counterclockwise rotation by 90 degrees about the origin followed by a translation to the left by 1 unit Reflection about the x-axis followed by a translation to the left by 1 unit Reflection about the y-axis followed by a translation to the right by 1 unit
Answers
What is 564.2+3.006-1.6?
Answers
Answer:
565.606, is shown step by step in the picture
At this rate how many min. Does it take Ben to run 2 miles, swim 2 miles, and bike 2 miles
Answers
Swim : 2 miles in a third of an hour or 20 mins
Bike : 2 miles in an eight of an hour or 7.5 mins
Equations in the Form y = ax^2
Guided Practice
Consider these equations.
y=2x^2
y=12x^2
y=−3x^2
How does each differ from the simple quadratic equation y = x^2?
In each of these new equations, x^2 has a coefficient. They are all examples of the equation y = ax^2.
Let’s look at how the coefficient 2 affects the graph of the function y = 2x^2.
Type your answer and then click or tap Done.
First, find the values of 2x^2 by completing this chart. The first is done for you.
x x^2 2x^2
−2 4 8
−1 1 Fill in the blank text field 1
Answers
Answer:
2
Step-by-step explanation:
It's 2 because 4^2 is 8 and 1^2 is 2 so that's how I got my answer
Evaluate (x + 3)? – 6 when x = 4.
Answers
Answer:
D. 43
Step-by-step explanation:
1. To evaluate the expression, we plug in the value of 4 into x and simplify.
[tex](4+3)^2-6[/tex] [tex](7)^2-6[/tex] [tex]49-6[/tex] [tex]43[/tex]Therefore, the answer is D. 43.
Answer:
43
Step-by-step explanation:
(4 + 3)^2 - 6
7^2 - 6
49 - 6
43
Please help me please
Answers
1. she makes a profit
2.300$
3.25%
C.
1.3000$
2.9000$
ok done. Thank to me :>
plase answer the second one
thanks
Answers
Answer:
0,01
Step-by-step explanation:
0,0001 = 1 / 10000
√0,0001
= √( 1 / 10000 )
= √1 / √10000
= 1 / 100
= 0,01
Can someone help me pls
Answers
Equation in slope intercept form is: y=-3/2-2
Equation in point slope form is:
y+2=-3/2x-3/2.
If you want the un simplified version of the equation in point slope form it is: y- -2= -3/2(x+1)
Hope this helps!! :)
each chicken coop can hold 8 chickens what's the maximum of chickens that can fit in 7 Coops?
Answers
Answer:
56
Step-by-step explanation:
each can fit 8 chickens so that means that 7 coops can fit 56 chickens
8×7=56
Identify the independent and dependent variables. Then, write a rule in function notation for the situation, letting x represent the independent variable.
A hair stylist's fee is $20 for each haircut.
Answers
Answer:
independent: number of haircuts
dependent: total income
rule: f(x) = 20x
Step-by-step explanation:
Just put the amount the hairdresser is earning and the unknown value together? Lol
The sum of 3.25 and twice a number is -7.
What is the number? Enter your answer as a decimal.
n =
Answers
Answer: -5.125
Step-by-step explanation:
Let X be the "number."
The sum of 3.25 and twice a number is -7.
3.25 + 2X = -7
2X = -10.25
X = -5.125
Answer:
n = -5.125
Step-by-step explanation: I took the test