Can someone give me a step by step explanation because my teacher doesn’t teach us anything? :(
Answers
Answer:
(7x^2 -1)(x - 2).
Step-by-step explanation:
7x^3 - 14x^2 - x + 2
We can factor this by grouping - that is factoring the first 2 terms and the last 2:
= 7x^2(x - 2) - 1(x - 2) <-- the x - 2 is common to both parts so we have:
(7x^2 -1)(x - 2).
Related Questions
What's the lcm for 18, 27, 12? I got 648. Am not sure if it is correct. Can you please explain if it is correct or not?
Answers
Answer:
Step-by-step explanation:
Put these numbers into their prime factors.
18: 2 * 3 * 3
27: 3 * 3 * 3
12: 2 * 2 * 3
The LCM must have
two 2s
Three 3s
That's it
2*2 * 3 * 3 * 3
LCM = 108
648 might be a multiple of the three, but it's not the smallest one.
108 = 27 * 4
108 = 18 * 6
108 = 12 * 9
If you roll a number cube, what is the theoretical probability of rolling an odd number? If the experimental probability of rolling an odd number was 13 out of 20 times, is the experimental probability equal to the theoretical probability?
Answers
Answer:
5/6
Step-by-step explanation:
Karen Gaines invested $13,000 in a money market account with an interest rate of 3.25% compounded Semiannually. Four years later, Karen withdrew the full amount to put toward the down payment on a new house. How much did Karen withdraw from the account?
Answers
Answer:
$16,380Step-by-step explanation:
geometry is experienced that in the early childhood setting through
Answers
playing with blocks??
I am so lost an I can't fail this class
Answers
12. They are congruent because of SAS (Side Angle Side) because segment WX is congruent to segment YZ and angle x is congruent to angle Z and segment XY is congruent to segment ZW
13. Angle 1 = 20° before 180 - 90 - 70 = 20
14. Angle 1 = 55° because 180 -80 - 45 = 55 the angles are congruent in both triangles so you can use the known numbers of one triangle to figure out the other
I hope this helps!
Classify the following: 9G-7
Answers
Answer:
Expression
Step-by-step explanation:
its expression
1. What is the slope of the line graphed below?
Coordinate 1:
Coordinate 2:
Slope:
Answers
Answer:
were is the line graphed?
Step-by-step explanation:
But I will help?
Answer:
I can't see the line but if you start at a point where the line crosses over an intersecting corner and find the next nearest corner where it intersects the slope will be however many up(or down - if its down its negative) you have to go/ how many sideways you have to go
ex:
so in example A the slope would be 2/1 which simplifies to 2 and in example B the slope would be -3/2
WILL MARK BRAINLIEST! Fill in the blanks. I genuinely need help so please only answer if you know, thank you!
Answers
Given the polynomial 2xcube + 5xsquare + 3x +4 what is it’s value when x= 10
Answers
Answer:
2534
Step-by-step explanation:
2x^3+5x^2+3x+4
x=10, so:
2(10)^3+5(10)^2+3(10)+4
2000+500+30+4
Answer: 2534
When testing for current in a cable with eleven color-coded wires, the author used
required for every possible pairing of two wires?
meter to test two wires at a time.
The number of tests required is
Answers
The number of test required is: 55
Explanation:
Using combination formula:
n!/x!(n-x)!
= 11!/2!(9)!
= 55
Each container below describes a ratio of marbles.
Drag marbles to each container to match the description.
Answers
Answer:
Step-by-step explanation:
bro that is easy first box will have 4 red 1 blue, second would have 3 reed 2 blue, last one would be 4 blue 1 red
b. The cleaning company charged a total of $83 to clean Peter's house. How many hours did it take to
clean Peter's house?
Answers
Answer:
umm... the question is incomplete!!
AC = 39
2x-8
X+17
Find the length of AB
27
12
10
None of the other answers are correct
22
Answers
Answer:
Step-by-step explanation:
b
Answer:
12
Step-by-step explanation:
AB + BC = AC
(2x - 8) + (x + 17) = 39
3x + 9 = 39
x = 10
AB = 2(10) - 8 = 12
During the month of April, it rains 2 days for every 3 days that it does not rain. What percent of the days in April does it rain?
Answers
Answer:
40%
Step-by-step explanation:
In month of April, the percent of raining will be 40 %.
Given that, In the month of April, it rains 2 days for every 3 days that it does not rain.
It means that in 5 days, 2 days raining and 3 days does not raining.
Number of days raining in 5 days = 2 days
Percent of raining is, [tex]=\frac{2}{5}*100 =40[/tex]
Hence, In month of April, the percent of raining will be 40 %.
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Can someone help me?
Choose an inequality for each situation.
1. Last Wednesday, there was more than 4 inches of snow. _________________
2. Yesterday, there was less than 25 inches of snow. _________________
3. The temperature tomorrow will be no more than 8 °F. _________________
4. The temperature today will be at least 7 °F. _________________
Answers
Answer:
The symbols that we will use are:
a > b (a is larger than b)
a < b (a is smaller than b)
a ≥ b (a is larger than or equal to b)
a ≤ b (a is smaller than or equal to b).
1) if x represents the inches of snow, we have:
"More than 4 inches" means that x must be strictly larger than 4 inches, this can be written as:
x > 4 inches.
2) "less than 25 inches" means that x must be strictly smaller than 25 inches, this can be written as:
x < 25 inches.
3) If T represents the temperature
"No more than 8°F" means that the temperature can be smaller than 8°F, or equal to 8°F, then we can write this situation with:
T ≤ 8°F
4) "At least 7°F" means that the temperature can be 7°F or more than that, then we can write this situation as:
T ≥ 7°F
What is it called when the rate of Change is the same on the entire graph
Answers
Answer:
Constant rate of change. The rate of change is the same on the entire graph.
Step-by-step explanation:
7. What is the value of any real number raised to 0?
A. 1
C.O
B.
2
D. 3
Answers
Answer:
A. 1
Step-by-step explanation:
The value of any real number raised to 0 is 1.
Complete the missing value in the solution to the equation:
7 + 5x = =3(y-2)
( ,5)
Answers
Answer:
x = 2/5
Step-by-step explanation:
Given:
7 + 5x = 3(y-2)
Rearrange this equation such that x is expressed in terms of y
7 + 5x = 3(y-2) (expand right side)
7 + 5x = y(3)-2(3)
7 + 5x = 3y-6 (subtract 7 from both sides)
5x = 3y - 6 - 7
5x = 3y - 13
we are given the y-value of the coordinate pair (? , 5)
simply substitute y=5 into the equation above
5x = 3y - 13
5x = 3(5) - 13
5x = 15 - 13
5x = 2 (divide both sides 5)
x = 2/5
Which function is represented by the graph?
|-x+3
x + 3
-x + 3
l-xl +3
NOBODY EVEN ASKS THESE QUESTIONS
Answers
Answer:
C
Step-by-step explanation:
Answer: C is the correct answer on edge
If f(x)=4x+5 what is f(4)
Answers
Answer:
Step-by-step explanation:
f(4) = 4(4) + 5
f4= 16 + 5
f4= 21
f = 21/4
f= 5.25
A motorboat moves across a lake. It begins at 50km from shore after 9 minutes it is 14 km from shore. What’s it’s distance from shore in a function
Answers
Answer:
List all of the solutions.
50 k m =
9 m i n u t e s =
14 k m =
Step-by-step explanation:
Answer:
y = -4x + 50
Step-by-step explanation:
To write the function we'll use y = mx + b, where y is the distance the boat is away from shore, m is how many km/minute the boat moves at, x is how many minutes it's been, and b is how many km away from shore the boat was at the start. We already know the value of b is 50, so we can put that into the equation:
y = mx + 50
To find how many km the boat moves per minute, let's use the given amount of minutes and km (9, 14) and put them into the equation:
14 = m(9) + 50
Now let's solve for m:
14 = 9m + 50
Subtract 50 from both sides to isolate the 9m:
14 - 50 = 9m + 50 - 50
- 36 = 9m
divide both sides by 9 to isolate the m:
-36/9 = 9m/9
-4 = m
The boat moves at -4 km/minute, which is the same thing as saying that after 1 minute passes, the boat gets 4km closer to the shore. Now we can input this value into the equation and we have our answer:
y = -4x + 50
Simplify (2s+5-3s)+4(s-6^2)
Answers
Answer: 3s-139
Step-by-step explanation: (2s+5 - 3s)+4(s-6^2)
Collect like terms and evaluate
(-s+5) +4 (s-36)
Rewrite and remove the parentheses
-S+5 +4s -144
Collect like terms and calculate and you get
3s-149
The segments shown below could form a triangle.
А
С
B
5
6
В
12
O A. True
O B. False
Answers
Answer:
its false
Step-by-step explanation:
The three line segments cannot form a triangle
What is a Triangle?A triangle is a plane figure or polygon with three sides and three angles.
A Triangle has three vertices and the sum of the interior angles add up to 180°
Let the Triangle be ΔABC , such that
∠A + ∠B + ∠C = 180°
The area of the triangle = ( 1/2 ) x Length x Base
For a right angle triangle
From the Pythagoras Theorem , The hypotenuse² = base² + height²
if a² + b² = c² , it is a right triangle
if a² + b² < c² , it is an obtuse triangle
if a² + b² > c² , it is an acute triangle
Given data ,
Let the triangle be represented as ΔABC
Now , the measure of side AC = 6 units
The measure of side BC = 5 units
And , the measure of side AB = 12 units
where AC + BC = 11 units
And , AC + BC < AB
So , the triangle cannot be formed when the sum of two sides is less than the third side
Hence , the triangle cannot be formed with 6 , 5 and 12 units of measurements
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Maricella solves for x in the equation 4 x minus 2 (3 x minus 4) + 4 = negative x + 3 (x + 1) + 1. She begins by adding –4 + 4 on the left side of the equation and 1 + 1 on the right side of the equation. Which best explains why Maricella’s strategy is incorrect?
The multiplication that takes place while distributing comes before addition and subtraction in order of operations.
In order to combine like terms on one side of the equation, the inverse operation must be used.
When the problem is worked in the correct order, the numbers that Maricella added are not actually like terms.
Maricella did not combine all three constants on both sides of the equation; she combined only two.
Answers
Answer:
its A yo
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
plzzzzzz help me thank you :))
Answers
Answer:
1 and 1/4
Step-by-step explanation:
8 poin
Question 10. Find the retail sale price of each item below. Round to two
decimal places when necessary. Original price: $119; Markdown: 70 %*
$80.50
$189.00
O $35.70
O $76.90
Answers
Answer:
The correct answer is option C.$35.70
Paul plans to buy a movie that has a regular price of $19.99. It is on sale for 25% off, but Paul will have to pay 6% sales tax. Round to your answer to the nearest whole number.
Answers
Answer:
16.00
Step-by-step explanation:
19.99 - 25% + 6% = 15.89 =16.00
Which of the following is the slope of the line passing through each pair of points?
Point 1:(-9, -3)
Point 2:(-7, -5)
Answers
The slope of the line is = -1
Explanation:
To find the slope use the slope formula:
Y1-Y2/X1-X2
So, -3-(-5)/-9-(-7) = -1
[tex]\frac{20}{24}[/tex] = [tex]\frac{x}{48}[/tex]
SOLVE FOR X!
Answers
Answer:
x = 40
Step-by-step explanation:
Set up a proportion.
20/24 = x/48
Divide 48 by 24.
48 / 24 = 2
Multiply 2 by 20.
2 x 20 = 40
x = 40
Answer:
[tex]x=40[/tex]
Step-by-step explanation:
We have:
[tex]\frac{20}{24}=\frac{x}{48}[/tex]
First, we can reduce the left-hand side. Reduce both the numerator and the denominator by 4. Thus:
[tex]\frac{5}{6}=\frac{x}{48}[/tex]
Cross-Multipy:
[tex]6x=240[/tex]
Divide both sides by 6. Hence, the value of x is:
[tex]x=40[/tex]
Which of the following numbers can be expressed as repeating decimals? (5 points) 4 over 7 , 2 over 5 , 7 over 8 , 4 over 9 4 over 7 and 4 over 9 7 over 8 and 4 over 9 4 over 7 and 2 over 5 2 over 5 and 7 over 8
Answers
Answer:
4/9
Step-by-step explanation:
Answer:
4/9 and 4/7
Step-by-step explanation: