Answer:
9x^4+21x^3+13x^2-x-2
Step-by-step explanation:
just foil (3x-1)(x+1)=3x^2+3x-x-1=f oil your answer (3x^+2x-1)with (X+1) this gives you 3x^3+3x^2+2x^2+2x-x+1 reduces to 3x^3 +5x^2+x+1 foil that with 3x=2
which gives you you answer
Simplify the expression. If not possible, write simplified.
3 - 2y +9
Answer:
-2y + 12
Step-by-step explanation:
3 - 2y +9
Combine the constants
-2y +3+9
-2y + 12
Answer:
-2y + 12
Step-by-step explanation:
1) Group like terms: -2y + 3 + 9
2) Combine like terms: 3 + 9 = 12
3) -2y + 12
Hope this helps and good luck with your assignment. (pleasem mark me brainliest if possible)
What's the answer to this question?
help please will give brainilest
Answer:
See step by step explanation or see diagram.
Step-by-step explanation:
Hi!
So, we're asked to find a line that is parallel to the given line and passes through a point.
We're going to use slope-intercept form.
y=mx+b
M is slope and b is y-intercept
Start!: Find a line that is parallel to y= -2x +4 and passes through (-4,7)
Parallel lines have the same slope . We can change slope-intercept form to reflect that.
y=-2x + b
Now, we need to find b (the y-intercept). We can do this by plugging in the coordinates of the point that we were given.
7= -2 (-4) + b
7 = 8 +b
b = -1
Next, change the equation to reflect that.
y = -2x - 1.
So, go right.
This time, the point is (2,1) and the line is y= -x - 4.
The slope of a line parallel to y = -x -4 is -1.
y= -1x+b
Plug in the points:
1 = -1 (2) +b
1 = -2 +b
b = 3
Finish the equation.
y = -x + 3.
Go diagonally.
This time, the point is (-6,1) and the line is y = 1/2x +1 .
The slope of the parallel line will be 1/2.
y= 1/2x +b
Plug in points:
1 = 1/2 (-6) + b
1 = -3 +b
b = 4
y = 1/2x + 4
Go down.
This time, the point is (2,0) and the line is y= 3/2x+5
Slope of parallel line: 3/2
y = 3/2x+b
Subsitute points in.
0 = 3/2(2) + b
0 = 3 + b
b = -3
y = 3/2x -3
Go left.
This time, the point is (-1,-5) and the line is y=2x-9
Slope of parallel line: 2
y=2x+b
Substitute points:
-5 = 2(-1) + b
-5 = -2 + b
b = -3
y= 2x -3
Go diagonally.
This time, the point is (-9, -8) and the line is y= 1/3x+3
Slope of parallel line: 1/3
y = 1/3x+b
-8 = 1/3 (-9) +b
-8 = -3 +b
b= -5
y=1/3x-5
Go up.
This time, the point is (4,3) and the line is y= x +6
SOPL (slope of parallel line): 1
y=x+b
3 = 4 + b
b = -1
y=x-1
Go right.
This time, the point is (-2, -8) and the line is y=3x-1
SOPL = 3
y= 3x+b
-8 = 3(-2) +b
-8 = -6 + b
b = -2
y=3x-2
Go down.
This time, the point is at (1,4) and the line is y=-2x-1
SOPL: -2
y= -2x + b
4 = -2 (1) +b
4 = -2 + b
b=6
y= -2x + 6
Go diagonally.
This time, the point is (4,11) and the line is y = -1/2x-5
SOPL: -1/2
y= -1/2x + b
11 = -1/2 (4) +b
11 = -2 +b
b=13
y= -1/2x+13
Finish!
What is the answer to 18-4K=-10-4k?
Answer:
no solution
Step-by-step explanation:
add 4k to both sides of the equation and you have ...
18 = -10 . . . . false
There is no value of k that will make this statement true. There is no solution.
The cost of 24 bottles of water is $6. Which expression shows how to find the cost of 10 bottles of water?
A. 24/6 x 10
B. 24/10 x 6
C. 6/10 x 24
D. 6/24 x 10
What is |v + 81 – 5 = 2
Answer:
-1 , -15
Step-by-step explanation:
| v + 8 | - 5 = 2
(add 5 both sides)
| v + 8 | = 7
(create two equations
v + 8 = 7 v + 8 = -7
(subtract 8 both sides)
v = -1 and v = -15
Find x and y (round to the nearest tenths is needed)
Picture below.. help
Answer:
x=11/2
y=11√3/2
Step-by-step explanation:
This is a 30°-60°-90° triangle. So if we call the short side x, then the 2nd longest side will be x√(3), and the hypotenuse is 2x.
So here we have 11 as the hypotenuse. So:
11=2x ---> x=11/2 and y=x√3=11√3/2
You could also just take the sine and cosine of the sides using either angle as well. But this is a common ration of sides that is talked about in Math classes; especially Trig.
Edit: I missed the part where you said you wanted rounded answers. Just plug the values into a calculator and round as needed.
-5x + (-2) = -2x + 4
Put the following equation of a line into slope-intercept form, simplifying all
fractions.
4x – 4y = -8
Explain how you would multiply 5 x 2 1/2?
Answer:
5
Step-by-step explanation:
5 × 2 × 1/2
Reduce the numbers using the greatest common factor 2
Solution: 5
Find the slope of the line 4x−5y=−10.
Answer:
X intercept = -2.50000
Y intercept = 2
Step-by-step explanation:
1/2x+ y=-7
-3x + 2y = -2
You could produce a pair of like terms with
opposite coefficients by multiplying the first equation by what number
Answer: 6
explanation: I just did it
Answer:
Step-by-step explanation:
Answer is 6
Negative four times
a number is -292. What
is the number?
Answer:
The number is 73.
Answer:
73
Step-by-step explanation:
-292 divided by -4 has to be positive. Negative divided by negative is positive. Just divide normally but add this rule.
Solve the equation. Three-fourths times x equals 9. A. x equals 12. B. x equals 108. C. x equals 72. D. x equals four-ninths.
Answer:
The answer is A.) x = 12
Step-by-step explanation:
I hope this helps!
Answer: 12
Step-by-step explanation:
|2x + 5| = 13 please show work
Answer:
x=4
Step-by-step explanation:
|2x + 5| = 13
-5 -5
|2x| = 8
2x/2 8/2
|x| = 4
Two identical pumps fill a water reservoir in 10 hours. How many additional pumps should be turned on if the reservoir must be willed in 4 hours?
Answer:
5
Step-by-step explanation:
All you have to do is 2*10=20 and then 20/4=5
So 5 additional pumps should be turned on.
The number of additional pumps that should be turned on if the reservoir must be filled in 4 hours is 3 pumps
Given:
2 identical pumps = 10 hours
Time taken for each pump = Total time ÷ number of pumps
= 10 hours / 2 pumps
= 5 hours per pump
Total hours to fill a reservoir = 4 hours
let
x = number of pumps
Number of pumps = (Time taken for each pump × Total hours to fill a reservoir) / Total hours to fill a reservoir
= (5 × 4) / 4
= 20 / 4
= 5 pumps
Additional pump needed = Pumps needed - available pumps
= 5 - 2
= 3
Therefore, number of additional pumps that should be turned on if the reservoir must be filled in 4 hours is 3
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Based on a survey, assume that 38% of consumers are comfortable having drones deliver their purchases. Suppose that we
want to find the probability that when four consumers are randomly selected, exactly two of them are comfortable with
delivery by drones. Identify the values of n, x, p, and q.
Answer:
[tex]n = 4[/tex]
[tex]x = 2[/tex]
[tex]p = 38\%[/tex]
[tex]q = 62\%[/tex]
Step-by-step explanation:
Required
Find n, x, p and q
n always represent the population surveyed;
So:
[tex]n = 4[/tex]
x represents the sample from the population
So:
[tex]x = 2[/tex]
p always represents the given proportion
[tex]p = 38\%[/tex]
Solving for q
[tex]p + q = 1[/tex]
[tex]q = 1 - p[/tex]
[tex]q = 1 - 38\%[/tex]
[tex]q = 62\%[/tex]
2x2x2x2x2x2x2x2/2x2x2x2
Answer:
1024
Step-by-step explanation:
Identify the independent and dependent variables in the following situation: Julie notices that her plant grows one inch for every liter of water that it receives.
Answer:
third choice the independent variable is the amount of water given, dependent is the height of the plant
What is 3x10,000+4x1,000+6x100+8x10+8 written in standard form?
Hello!☺
[tex]Answer:\boxed{34,688}[/tex]
[tex]Explanation:[/tex]
[tex]3*10,000+4*1,000+6*100+8*10+8[/tex]
To solve, you will need to evaluate.
[tex]3*10,000+4*1,000+6*100+8*10+8=34,688[/tex]
[tex]34,668[/tex]
Hope this helps!☺
Answer:
34,688
Step-by-step explanation:
30,000 + 4,000 + 600 + 80 + 8 = 34,688
Hopefully this helps you :)
pls mark brainlest ;)
Solve the equation for n
y=nx+m
N=?
what is 20 times 20plz tell me
Answer:
400
Step-by-step explanation:
If the team’s average time is less than one minute per leg, then the eighth graders earn 50 points. If not, the seventh graders earn 50 points. Which grade should be awarded 50 points?
Answer:
the seventh grader because the eighth graders got 58 which is more than 50 so the 7th grader would get the pts
Step-by-step explanation:
The seventh grader should be awarded 50 points.
What is Data?In mathematics, data is a collection of facts and figures that can take any shape, whether it be numerical or not. You can calculate numerical data, which is always gathered in number form and includes things like student test scores, employee salaries, football team member heights, etc.
Given:
If the team’s average time < one minute per leg, then the eighth graders earn 50 points.
If the team’s average time > one minute per leg, then seventh graders earn 50 points.
As, the eighth graders got 58 which is more than 50.
Hence, the 7th grader would get the points.
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Which term completes the product so that it is the difference of squares?
(−5x−3)(−5x+________)
Answer:
3
Step-by-step explanation:
For Edge Users its
C
Answer: C. 3
Step-by-step explanation: Just confirming what the other person wrote :)
Jhalen gave a presentation in health class about the importance of supportive sneakers. His presentation was 2/3 the length of Lenayah's presentation on medicine. Jhalen's presentation was 8 minutes. How long was Lenayah's presentation?
Answer: Lenayah's presentation was 12 minutes long.
Step-by-step explanation:
Set up a proportion. 2/3 = 8/x. Cross multiply. 2x = 24Divide both sides by 2. x =1211. The first four terms of an AP, whose first term is -2 and common difference is -2 are
Answer:
- 2, - 4, - 6, -8
Step-by-step explanation:
If the first term of the arithmetic sequence is is -2 , and the common difference is -2, then we can generate the first four terms the following way:
a1 = - 2
a2 = - 2 - 2 = - 4
a3 = - 4 - 2 = - 6
a4 = - 6 - 2 = - 8
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In a certain apartment building, the ratio of tenants to cars is 3:5. If there are 30 tenants, how many cars are there?
Answer:
50 cars
Step-by-step explanation: 3x10 is 30 and 5x10 is 5
In the figure, RS bisects DE at point s. DS = 3x + 10 and SE = 6x - 2. Find the value of 'x and the length
of the segment DE.
x = 4; DE = 22
x = 8/3; DE = 18
x = 4; DE = 44
X = 3; DE = 38
The value of x is equal to 4 and the length of segment DE is equal to 44.
Option (C) is correct.
It is required to find the scientific notation.
What is midpoint ?The midpoint is the middle point of a line segment. It is equidistant from both endpoints, and it is the centroid both of the segment and of the endpoints. It bisects the segment.
Given:
Since S is the midpoint of line segment DE, it simply means that line segment DE is divided into two (2) sections DS and SE and they are equal in length. By applying the midpoint rule, we have:
DS = SE
3x + 10 = 6x - 2
6x - 3x = 10 + 2
3x = 12
x = 12/3
x = 4.
For the measure of segment DS, we have:
DS = 3x + 10
DS = 3(4) + 10
DS = 12 + 10
DS = 22.
For the measure of segment SE, we have:
SE = 6x - 2
SE = 6(4) - 2
SE = 24 - 2
SE = 22.
For the measure of segment DE, we have:
DE = DS + SE
DE = 22 + 22
DE = 44.
Therefore, the value of x is equal to 4 and the length of segment DE is equal to 44.
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Find (9.3 × 10^6) + (1.8 × 10^4). Express your answer in scientific notation.
