Answer:
Hi there!
Your answer is:
4n^3 -n^2 +4
Step-by-step explanation:
(5n^3 +2n^2 +2 ) - (n^3 +3n^2 -2)
First, distribute the negative to the second parentheses!
5n^3 +2n^2 +2 -n^3 -3n^2 +2
Next, combine like terms!
4n^3 -n^2 +4
Please let me know if you have questions!
Yuson must complete 30 hours of community service. She does 2 hours each day. Which linear equation represents the hours Yuson has left after x days?
A. y = –2x + 30
B. y = 2x + 30
C. y = –2x – 30
D. y = 2x – 30
Describe the main parts of a proof.
Answer:
ok i want to help but wdym by a proof
The correct answers are:
Given; prove; statements; and reasons.
Explanation:
The given is important information we are given at the beginning of the proof that we will use in constructing the proof.
The "prove" is the statement we are trying to prove.
The statements are the steps we use to get from our given to what we're trying to prove.
The reasons are the theorems, conjectures, properties, and corollaries we use to justify the steps we take in the statements part.
. A container ship is overtaking an oil tanker on the way out of Harwich Harbor, and the first mate notices that if he starts walking from the front of the container ship when the two ships start overlapping, he reaches the back as the two ship separate. He walks at 3 km/hour. If the container ship is 100 m long, and travelling at 12 km/hour, how long is the oil tanker?
Answer:
The length of the oil tanker is 300 meters
Step-by-step explanation:
The given parameters are;
The speed with which the first mate is walking = 3 km/hour = 3,000 m/hour
The length of the container ship = 100 m
The speed with which the container ship is travelling = 12 km/hour
The time it takes the first mate to walk from the front to the back of the container, [tex]t_f[/tex] is therefore;
Time = Distance/Speed
[tex]t_f[/tex] = 100 m/(3000 m/hour) = 1/30 hour = 1/30 hour × 60 min/hour = 2 minutes
∴ [tex]t_f[/tex] the time it takes the first mate to walk from the front to the back of the container = 2 minutes
The resultant speed of the first mate relative to the ground = 12 km/hour - 3 km/hour = 9 km/hour
Given that the first mate starts at the front when the two ships starts overlapping and reaches the back as the two ships separate, we have;
The speed of the oil tanker relative to the container ship = The speed of the first mate relative to the ground
The speed of the oil tanker relative to the container ship = 9 km/hour
The length of the oil tanker = The speed of the oil tanker relative to the container ship × Time of observation of the first mate
∴ The length of the oil tanker = 9 km/hour × 2 minutes = 9 km/hour × 1/30 hours = 3/10 kilometers = 0.3 kilometers = 300 meters
The length of the oil tanker = 300 meters.
if you can answer any of these please do and put the question number by the answer
What is the value of x X+3/-6=2x
Plz help me
Answer:
x = - 0.23 or -(3/13)
Step-by-step explanation:
Question: x+3/-6 =2x
x + 3 = - 6 * 2x
x + 3 = -12x
3 = -12x - x
3 = -13x
x = - 3/13
Add these fractions, giving your answer
in its simplest form.
8/15 +3/15 =?
Answer:
11/15
Step-by-step explanation:
To add fractions, you add the numerators together( the top) and the bottom stays the same for this situation.
so the numerators of the fraction are 8 and 3
8+3 =11
So the answer is 11/15 and this is the most simplified it can get.
Each month, Mr. Becker drives 1,384 miles on a food-
delivery route. How many miles does he drive on his
route in 2 months?
A 2,768 miles
B
2.758 miles
с
4,152 miles
D 2,868 miles
How many times greater is 1 light year in scientific notation than a 1 astronomical unit?
Light year: 9.5 x 10^12 km
AU: 1.5 x 10^8 km
Answer:
1 light year \approx 6.02 \times 10^4 astronomical unit
Step-by-step explanation:
ratio
[tex]=\frac{9.5 \times 10^{12}}{1.5 \times 10^8}\\=\frac{19}{3} \times 10^{12-8}\\\approx 6.01666 \times 10^4 \\\approx 6.02 \times 10^4[/tex]
The number of times that 1 light year is greater than 1 astronomical unit in scientific notification is; 6.33 × 10⁴
We are given;
1 light year = 9.5 × 10^(12) km
1 astronomical unit = 1.5 × 10^(8) km
Thus to find out how many times greater 1 light year is than 1 astronomical unit in scientific notation, we will divide 1 light year by 1 astronomical unit.
This gives;
(9.5 × 10^(12))/(1.5 × 10^(8))
>> (9.5/1.5) × 10^(12 - 8)
>> 6.33 × 10⁴
Read more about scientific notation at; https://brainly.com/question/5565320
Is 4.56556555 . . . a rational or irrational number?
Answer:
No ,its irrational
Step-by-step explanation:
bcoz of it is not fixed number
it is infinite number
Answer:
Not rational and not irrational number
factorise completely:p^2-7p-44
Answer:
(p-11)(p+4)
Step-by-step explanation:
p2-7p-44
by spliting the middle term
a×c=1×-44=-44
4×-11=-44
p2+4p-11p-44
p (p+4)-11 (p+4)
(p-11)(p+4)
A rectangular prism is 3 units high, 2 units wide, and 5 units long. What is its surface area
insquare units? Explain or show your reasoning.
Answer:
62 square units
Step-by-step explanation:
Surface area of a rectangular prism = 2 ( wl + hl + hw)
Where,
w = width = 2 units
h = height = 3 units
l = length = 5 units
Surface area of a rectangular prism = 2 ( wl + hl + hw)
= 2 (2*5 + 3*5 + 3*2)
= 2 (10 + 15 + 6)
= 2 (31)
= 62 square units
Surface area of the rectangular prism = 62 square units
J is between H and K If HJ=5p JK=p and KH=3 Find HJ
Answer:
HJ = 2.5
Step-by-step explanation:
It is given that, J is between H and K. So,
HK = JH + JK
We have, HJ=5p JK=p and KH=3
So,
3 = 5p + p
3 = 6p
p = 1/2
The value of p is 1/2
Put the value of p in HJ=5p
i.e.
[tex]HJ = 5\times \dfrac{1}{2}\\\\HJ=2.5[/tex]
9x-5- 14= 17
Please
Step-by-step explanation:
[tex]9x - 5 - 14 = 17[/tex]
Add similar terms : -5-14 : -19
[tex]9x - 19 = 17[/tex]
Collect like terms and simplify
[tex]9x = 17 + 19 \\ 9x = 36[/tex]
Divide both sides of the equation by 9
[tex] \frac{9x}{9} = \frac{36}{9} [/tex]
Simplify
[tex]x = 4[/tex]
I hope this helps you!
Find the solution to the following.Make sure you simplify. 1/2 + 2/5 , 1/2 - 2/5 , 1/2 ÷ 2/5 ,1/2 • 2/5
Answer:
9/10,1/10,1 1/4, and 1/5
If you know the rules of adding, subtracting, dividing, and multiplying decimals, you know what to do. If not, then I can show you if you'd like
What is the slope of the line x = 4?
Help please , I’m stuck at this question I need help please
Answer:
1 1/15
Step-by-step explanation:
you flip the second fraction then multiply straight across
4/5 divided by 3/4
4/5 divided by 4/3
4 x 4 = 16
5 x 3 = 15
16/15
then simplify
1 1/15
hope this helps
Simplify 12r + 5 + 3r - 5
Answer:
Step-by-step explanation:(12r+3r)+(5-5) = 15r + 0 = 15r
The simplified expression is 15r.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
12r + 5 + 3r - 5
Add like terms.
= 15r + 5 - 5
= 15r + 0
= 15r
Thus,
15r is the simplified expression.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ5
Which fraction is the simplest form of 16/34 A.9/17 B.4/9 C.7/16 D.8/17
explain how to solve 5+7z=19
Answer: Z = 2
Step-by-step explanation:
19 - 5 = 14
7 x ? = 14
7 x 2 = 14
Evalute j/4 when j = 12
Answer: I think the answer is 3
Step-by-step explanation: I Divided 12 by 4 and got the answer 3
Answer:
Answer is 3
Step-by-step explanation:
According to the question,
j = 12
So
j / 4 = 12 / 4 = 3
Pls mark my answer as Brainliest
There are 1,044 apartments in Baldwin County this year, which is approximately an 8.1% increase from last
year. How many apartments were there in Baldwin County last year?
Given :
Total apartments 1044 .
Increase in apartments , 8.1 % .
To Find :
How many apartments were there in Baldwin County last year.
Solution :
Let , amount of apartments last year is x .
So ,
[tex]\dfrac{1044-x}{x}\times 100=8.1\\\\(1044-x)\times 100=8.1x\\\\104400-100x=8.1x\\\\108.1x=104400\\\\x=\dfrac{104400}{108.1}\\\\x=965[/tex]
Hence , this is the required solution .
5/8 divided by 1/4 (im in middle school and forgot everything)
Answer:
3/8
Step-by-step explanation:
5/8 - 1/4 =
Find greatest common factor
1/4 = x/8
Multiply Top and bottom by greatest common factor
1/4 x 2/2 = 2/8
Subtract
5/8 - 2/8 = 3/8
Select all the correct answers. Which sequences of transformations applied to shape I prove that shape I is similar to shape II? a translation 12 units right and 5 units up, and then a dilation by a scale factor of 2 a reflection across the x-axis and then across the y-axis, and then a dilation by a scale factor of 2 a 180° counterclockwise rotation about the origin, and then a dilation by a scale factor of 2 a reflection across the y-axis, and then a dilation by a scale factor of 2 a reflection across the x-axis, and then a dilation by a scale factor of 2
Answer:
B and C
Step-by-step explanation:
got it right on my test.
What is equivalent to 80 ^ 1/4?
Find the midpoint of the segment with the given endpoints A(4, -2) and Q (10,7)
Answer:
The midpoint is ( 7, 5/2)
Step-by-step explanation:
To find the midpoint
Add the x coordinates and divide by 2
( 4+10) /2 = 14/2 = 7
The x coordinate of the midpoint is 7
Add the y coordinates and divide by 2
( -2+7) /2 = 5/2 =
The y coordinate of the midpoint is 5/2
The midpoint is ( 7, 5/2)
i dont know how to do this.
Answer:
C
Step-by-step explanation:
A function passes the vertical line test. This graph passes it so it is a function.
A one to one function has a single output for each input. This has multiple outputs for some inputs. Therefore, it is not one to one.
A school choir needs to make T-shirts for its 75 members and has set aside some money in their budget to pay for them. The members of the choir decided to order from a printing company that charges $3 per shirt, plus a $50 fee for each color to be printed on the shirts. Write an equation that represents the relationship between the number of T-shirts ordered, the number of colors on the shirts, and the total cost of the order
What is x equal to in the equation 5x^2-2x+5=0?
There are no real solutions to the problem.
The discriminant is -96 when the discriminant is a negative number it has no real solutions, only imaginary ones.
Answer:
hope that will help you
if i work 17 hours a week and earn 8 dollars an hour how many weeks would it take me to get to 3,457$?
Answer: without taxes entered into the equation, it would be 25.4
Step-by-step explanation:
i need help BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST
Answer:
Step-by-step explanation:
Area for triangle A is 12 Triangle B is 12 triangle C is 12
The area is related to the base and it's corresponding height because they all equal each other. The triangle has added on parts and it shows they are all equal but are in a different direction.
The area of the shaded triangle is 18 because the base is 6 and the height is 6.
A, B, E
I hope this helps.
Answer:
A: is 12
B is 12
C is 12
Step-by-step explanation:
I hope this is the correct answer (✿◡‿◡)
