Answer: -2m2 -m - 10
Step-by-step explanation:
(-5m2 - 8) - (-3m2 + m + 2)
Everything is behind the (-) when you have a parenthesis chang the sign so and let the () so will be
-5m2-8 +3m2 - m -2
Now you are going to add or subtract numbers for the one the same letter ( base) and for the one that don't have a other letter (base) you will let it like this so will be
-5m2 + 3m2 = -2m2
-8 -2 = -10
-2m2 - m - 10
Hope helps
Acela Express, the fastest train between Washington D.C and Boston covers a distance of 455 miles in 7 hours. How many miles will the train travel in 4 hours?
Answer:
260 miles
Step-by-step explanation:
Given that:
Distance covered in 7 hours = 455 miles
Number of miles train will travel in 4 hours
Average travel speed per hour :
Distance traveled / time taken
455 miles / 7 hours
= 65 miles per hour
Number of miles traveled in 4 hours :
Average Speed per hour * time
(65 * 4) = 260 miles
Solve.
-5 3/4 - 3 1/2
Answer:
The answer is
[tex] - 9 \frac{1}{4} [/tex]
what is computer answer
Step-by-step explanation:
A programmable electronic device that performs mathematical calculations and logical operations, especially one that can process, store and retrieve large amounts of data very quickly; now especially, a small one for personal or home use employed for manipulating text or graphics, accessing the Internet, or playing games or media is computer.
Hope it helps :)❤
I GIVE A BRAINLIEST I DO ANYHTING JUST HELP
The lines graphed below show the amounts of water in two tanks as they were being filled over time.
For each tank, explain whether or not there is a proportional relationship between the amount of water, in gallons, and the time, in minutes.If there is a proportional relationship, identify the unit rate. Use specific features of the graph to support your answer.
Answer:
(100,0.5)
Step-by-step explanation:
Unit Rate: k=200x
please help im not that good during this online
Answer:
The angle is 50 degrees.
1/2w = 10
Answer:
W=?
Answer ? Mark pls
Answer:
5
Step-by-step explanation:
Answer:
1/2w = 10 (you have to divide both sides by 1/2 to isolate w)
w= 5 (your answer)
I hope this helped :)
find the equation of a line which passes through (2 4) with a slope of ½
Answer:
The equation of the straight line is x - 2y +6 =0
Step-by-step explanation:
Explanation:-
Given a point ( 2, 4) and slope m = [tex]\frac{1}{2}[/tex]
The equation of the straight line passing through the point and having slope 'm'
y - y₁ = m ( x - x₁)
y - 4 = [tex]\frac{1}{2}[/tex] ( x - 2)
2( y -4) = ( x-2)
2 y - 8 = x -2
x - 2 y - 2 + 8 =0
x - 2y + 6 =0
The equation of the straight line is x - 2y +6 =0
The answer is:
y = 1/2x + 5
Work/explanation:
Since I have a point and the slope, I will write the equation in point slope form.
Point slope is
[tex]\sf{y-y_1=m(x-x_1)}[/tex]
where m = slope and (x₁, y₁) is a point on the line
Plug in the data
[tex]\sf{y-4=\dfrac{1}{2}(x-2)}[/tex]
Now let's simplify to slope intercept
[tex]\large\begin{gathered}\sf{y-4=\dfrac{1}{2}x+1}\\\sf{y=\dfrac{1}{2}x+1+4}\\\sf{y=\dfrac{1}{2}x+5}\end{gathered}[/tex]
Hence, the equation is y = 1/2x + 5.Three different bags of pretzels are sold at the store. Which bag of pretzels is the best buy?
Bag A:10 ounces for $1.10
Bag B:12 ounces for $1.38
Bag C: 6 ounces for $0.84
A. Bag A
B. Bag B
C. Bag C
D. Bag A and Bag B are equally good values
Answer:
A: 11 cents per ounce
B: 11.5 cents per ounce
C: 14 cents per ounce
Bag A would be the best buy
What is the length of AC?
Answer:
b
Step-by-step explanation:
Answer:
136
Step-by-step explanation:
triangles CAB and CED are similar, their sides are proportional
set up a proportion:
[tex]\frac{51}{144-x}[/tex] = [tex]\frac{3}{x}[/tex]
cross-multiply: 51x = 3(144 - x)
51x = 432 - 3x
54x = 432
x = 8
Plug in:
144 - 8 = 136
What are the values of x and y, based on the figure on the right?
Answer:
the values of x and y, based on the figure on the right is of b
x=76°,y=48°
Please help due soon will give brainliest
Answer:
25.13in³
Step-by-step explanation:
Write each percent as a decimal and as a fraction in simplest form. 36. 200% 37. 135% 38. 152% 39. 0.03% 40. 0.45%
Answer:
2.0 , 2/1.
1.35 , 1 7/20.
1.52, 1 13/25
0.0003, 3/10000
0.0045, 9/2000
Step-by-step explanation:
1.35 = 1 35/100 = 1 7/20
1.52 = 1 52/100 = 1 13/25
0.0045 = 45/10000 = 1 9/2000.
Multiply 2x(x^2-x+3)
Answer:
2x^3-2x^2+6x
Step-by-step explanation:
Hope this helps!
Have a great day!
Answer:
2x^3-2x^2+3
don't know if it's correct
Wesley wants to have at least $50 to spend each day of his 7-day vacation. He plans to save $30 each month for 12 months. Which of the following shows that Wesley will save enough money for his vacation? Choose all that apply.
Answer:
i cant choose any that applies to this question because there is no picture added to it and there are no choices to choose from. If i were to solve it though, it would be; yes, he will save enough money for his vacation.
Step-by-step explanation:
I know he would have enough--and in this case more than enough, because since he's planning to save $30 for a whole year just for $50, when he could simply make $60--which is in fact more than needed for his goal-- in just 2 months. If he were to stick with his plan though, he'd make $360. I got that by multiplying 30 by 12.
can someone pls help me with this!!
Answer:
1st one
Step-by-step explanation:
Please help-
I will try and give a lot of points
Answer:
25%, since 1/4=0.25 and 0.25*100 is 25%
Hope it helps!
Answer:
Step-by-step explanation:
Given data:
The given fraction is [tex]\frac{1}{4}[/tex]
The given fraction can be written as,
[tex]\frac{1}{4}=0.25\\=\frac{25}{100} \\=25 percentage[/tex]
Thus , the given fraction is 25%.
PLEASE MARK ME AS BRAINLIEST
Kate saved each week for 5 weeks and then spent $25. How much was she saving each week if she had $100 left at the end of 5 weeks and after spending $25? /3
Answer:
25 a week.
Step-by-step explanation:
100+25= 125
125÷5 = 25
Factor this polynomial.
-3x^2-16x- 5
Answer:
B. [tex]-(3x+1) (x+5)[/tex]
Step-by-step explanation
factored the equation to solve. Hope this helps!
Hi Thank you!
Have to write 20 letters lol
Answer:
I think this is free points?
Thanks!
Step-by-step explanation:
May I have brainiest please I'm trying to level up!
</3 PureBeauty
2x+3x+1=21
Solve and show work
Answer:
x=4
Step-by-step explanation:
2x+3x+1=21
(2x+3x)+(1)=21
5x+1=21
5x+1=21
Step 2: Subtract 1 from both sides.
5x+1−1=21−1
5x=20
Step 3: Divide both sides by 5.
Answer:
x=4
Step-by-step explanation:
2x+3x+1=21
Simplify both sides of the equation.
2x+3x+1=21
(2x+3x)+(1)=21(Combine Like Terms)
5x+1=21
5x+1=21
Subtract 1 from both sides.
5x+1−1=21−1
5x=20
Divide both sides by 5.
5x /5 = 20 /5
x=4
A model is made of an Airbus A300 aeroplane.
The length of the model is 36 cm.
The length of the real aeroplane is 54 m.
Answer:
Since the Airbus A300 model airplane was made to scale, measuring 36 centimeters, while the real airplane measures 54 meters, to determine the scale ratio between both planes, the following calculation must be performed:
36cm = 0.36m
0.36 = 1
54 = X
54 x 1 / 0.36 = X
150 = X
Therefore, the scale ratio between the model and the real plane is 150:1.
Can Someone help me?
I think the answer is A. 3.
B. no, to big a number
C. no, to small a number
D. no, again, too big a number.
Have a nice day and hope this helps!
What is 5y-15x-20=0 in y=Mx+b form
Answer:
y=3x+4
Step-by-step explanation:
First, you want to get the 'y' by itself.
5y=15x+20
Now, you want to divide everything by 5.
y=3x+4
Pls help I will give a lot of points and branliest
Answer: 10 1/2 degrees Celsius
Step-by-step explanation:
-14-8x=-2(-3x+7) one solution,no solution,or infinite
help plz due today i dont want to fail!
What is the value of Angle 'a'?
a
47°
Answer:
133
Step-by-step explanation:
180-47=133
Answer: if the shape is a triangle, 180-47=133
if it is any other shape, 360-47=313
Step-by-step explanation:
can you please help me and explain how to do both of these problems, I don't understand
Find the value of a.
Answer: 14
Step-by-step explanation: The perimeter is all of the side added together. When finding the perimeter of a rectangle the opposing sides have the same value. So the equation would be 2(12) + 2(a) = 52. 12 x 2 is 24. 52- 24 is 28 and youre left with 28 = 2(a). You divide each side by 2 and get 14 = a
PLEASE HELP DO THE ONES THAT ARE CIRCLED IT DIDNT TELL ME ANYTHING ELSE
Find the absolute value.
17.-|8|
18. |13|
19. |3 6/7|
20. |-134|
please help i dont know how to do this. I just went back to in person school and I told her it never taught me this. she argued with me and basically teach myself from pages of the math book. and I figured out some stuff but im confused with this part I'd love it if you'd help.
An absolute value is the positive value of the number between the vertical lines.
If the number in between the vertical lines is negative, the absolute value become a positive.
If the value in between the lines is already positive, it stays positive.
17. |-8| = 8
18. |13| = 13
19. |3 6/7| = 3 6/7
20. |-1.34| = 1.34
Answer:
17. 8
18.13
19. 3 6/7
20. 1.34
Step-by-step explanation:
The absolute value would just be the opposite of the original value.