Answer:
False
Step-by-step explanation:
Decimals such as 1.2, 4.95, 2.28914 are all rational numbers.
If it doesnt end then its irrational, such as pi. but we know the exact amount of the numbers above therefore its rational. Also it can be put in fraction form which is another way to determine if rational or not.
Why should we learn the limit definition of the derivative when we could just learn shortcut rules for differentiation?
Answer:
Step-by-step explanation:
I think this is a very essential question to ask. While a lot of people want shortcuts to get things done(i used to too, when I was a student), shortcuts doesn't always cut it short. The reason is just as simple as that of any other subject that deals with theory.
Learning the limit definition gives ample knowledge about how the whole derivation works in general. Yes, quite alright, you can get the basic differentiation done when you don't learn that, but as someone who has gone far in calculus, I'd tell you for free, a time will come during computation where you'd get stuck because you never had that prior knowledge of definition.
Further along the line in calculus, you would be doing derivatives where you'd have to apply your knowledge of the definition of limit, and how would you be able get that done if you hadn't already learnt it?
Exactly!
What is an equation of the line that passes through the points (-7,-7) and (-7,4) ?
(-7,-7) and (-7,4)
First we need to find the slope between these two points
(y2-y1) / (x2-x1) = -11 / 0 =
Therefore there is no slope.
So, the equation that is possible is:
x = -7
A train goes from Springfield, MA to Boston at a speed of 40 mph. On the return journey it moves at a speed of 80 mph. If the return journey takes an hour less than the outward journey, what is the average speed overall of the train?
Answer:
The answer is 53.3333333
Step-by-step explanation:
first you know that the speed on the way there is 40 mph and the back is 80
lets call the time x On the way there the time would just be X on the way back it would be x-1 because it took one less our
to calculate the distance you need to do speed times time therefor the distance on the way there would be 40x and the way back would be 80x-80
Then I made an equation 40x=80x-80 X=2
so the distance would be 80 miles but to find average speed you need to do total distance over total time so it would be 160 over 3 because the time is 2x-2 x=2 so thats 3
Hope this helps
i mark as brainliest
Answer: (2.5,0.5)
Step-by-step explanation:
Shows it on the graph
In the diagram below, the expression in each circle is the result of the sum
of the two rectangles connected to it.
Complete the diagram, writing the expressions in their simplified form.
4x + 3y- rectangle
5x + 7y
x + 4y
4x + 5y
2x - y
Answer/Step-by-step explanation:
The circle by your left:
(4x + 3y) + (2x - y)
Distribute +1
4x + 3y + 2x - y
Add like terms together
6x + 2y
The rectangle by at the bottom right:
(4x + 5y) - (x + 4y)
Distribute -1
4x + 5y - x - 4y
Group like terms
4x - x + 5y - 4y
3x + y
The circle at the bottom middle:
(2x - y) + (3x + y)
Distribute +1
2x - y + 3x + y
Group like terms
2x + 3x - y + y
5x
Sally wants to start a small business. She plans to sell snack packs by re-packing cookies and coffee sachets. Cookies come in packs of 10, while 3-in-1 coffee sachets come in packs of 12.
What is the smallest number of packs for each item should Sally buy if she wants to have packs with 1 cookie and 1 coffee sachet?
Answer: She needs 6 packs of cookies and 5 packs of coffee sachets.
Step-by-step explanation:
Cookies: come in packs of 10
Coffee sachets: come in packs of 12.
Sally wants to sell them in groups of 1 cookie and 1 coffee sachet, then we need to find a common multiple of 10 and 12. (the smallest one in this case).
To find the smallest common multiple, first let's find the largest common factor between 10 and 12.
If we write the numbers as a product of prime numbers, we have:
10 = 2*5
12 = 2*3*3
The only common factor is 2.
Then the smallest common multiple between 10 and 12 is equal to the product of 10 and 12 divided by the largest common factor between them, in this case is 2.
M = 10*12/6 = 60
Now to find the number of packages of each thing that she must buy, we need to divide 60 by the number of elements in each pack.
Cookies: 10 per pack
60/10 = 6
She needs 6 packs of cookies
Coffe: 12 per pack
60/12= 5
She needs 5 packs of coffee sachets.
Tell whether -2 is a solution of the inequality n-5<8
Answer:
-2 is a solution
Step-by-step explanation:
-2-5<8
-7<8
Answer:
-2 is a solution.
Step-by-step explanation:
negative 2 minus 5 is less than 8
negative 7 is less than 8
Which lines are perpendicular to the line y - 1 = {(x+2)? Check all that apply.
Oy + 2 = -3(x - 4)
Oy- 5 = 3(x + 11)
Oy=-3x -
5
y y = 1x-2
=
3x + y = 7
Answer: A C E
Step-by-step explanation:
y = -1x-2 is the perpendicular line of the given line y - 1 = {(x+2).
What is Slope of Line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁
The product of slope of perpendicular lines will be equal to minus one.
y-1=x+2 the line has a slope of +1.
The slope of the perpendicular line will be -1.
y = -1x-2 is the perpendicular line of the given line y - 1 = {(x+2).
Hence, y = -1x-2 is the perpendicular line of the given line y - 1 = {(x+2).
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what is 49400000000000 written in scientific notation
Answer:
4.94x10^13
Step-by-step explanation:
You have to move the decimal 13 times to the right and the number you get or it to be in scientific notation has to be in between 1 and something less than 10.
You probably don't need this answer anymore, sorry!
Li counts 203 stars in the sky. The next night, she counts 178 stars. How many stars in all did she see on the two nights?
Answer:
203 + 178 = 381
Step-by-step explanation:
Answer:
381
Step-by-step explanation:
i added
203
+178
381
NB: NOT HOW I WANTED IT TO TURN OUT
SORRY IF IT'S WRONG
A large banquet room holds 288 people with each table seating 8. How
many tables will the banquet hall have without going over its capacity?*
Answer:
The answer is 36
Step-by-step explanation:
First you have to divide 288 by 8 and then you have to see how many times 8 will go into 2 it can't so see how many times it will go into 28 which is 3 and you will get 24 then you subtract 24 from 28 and you get 4 then bring down the 8 an it 48 now see how many times 8 will go into 48 which is 6 times and you get 48 then you subtract 48 by 48 and you get 0 so the answer is 36HOPE THIS HELPEDTest Practice
14. Which set of numbers correctly shows all of the factors of 28?
A 1, 2, 4, 7, 14, 28 © 1, 2, 7, 14, 28
® 0, 1, 7, 14, 28 0 1, 2, 4, 7, 8, 14, 28
. If you could put a sealed room on a very sensitive scale and open a thousand soft drink
cans inside it, would the mass reading on the scale go up, go down, or stay the same?
Explain your answer.
Answer:
I think it would go up on the scale.
Step-by-step explanation:
I believe it would go up, because think about air in your mouth. If you close your mouth and add more air, your mouth gets heavier to carry. Therefore, the air needs to go somewhere. Same with carbonated soft drinks, like soda.
Please mark me Brainliest! I only need 4 more! Thank you so so much!
A right triangle has side lengths AC = 7 inches, BC = 24 inches, and AB = 25 inches.
What are the measures of the angles in triangle ABC?
m∠A ≈ 46.2°, m∠B ≈ 43.8°, m∠C ≈ 90°
m∠A ≈ 73.0°, m∠B ≈ 17.0°, m∠C ≈ 90°
m∠A ≈ 73.7°, m∠B ≈ 16.3°, m∠C ≈ 90°
m∠A ≈ 74.4°, m∠B ≈ 15.6°, m∠C ≈ 90°
Answer:c
Step-by-step explanation:
The measures of the angles in triangle ABC are; m∠A ≈ 73.7°, m∠B ≈ 16.3°, m∠C ≈ 90°
How to find the measures of angles in triangle ABCIt follows that the right angle is between the two shorter sides;
Hence, the angle measure, m∠C ≈ 90°.On this note, the angle, m∠A is opposite side BC;
Therefore, from sine formula;
Sin m∠A ≈ 24/25Sin m∠A ≈ 0.96m∠A ≈ sin-¹(0.96)m∠A ≈ 73.7°
And from sum of angles in a triangle;
m∠A ≈ 16.3°
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which best describes the triangele
Answer:
3 sided closed shape
Step-by-step explanation:
6. Joann needs $100 for a class trip. She has already saved $44. She sells
jean passes for $5 each. Which equation shows how many jean passes she
will need to sell?
A) 100 = 5x - 44
B) 100 = 5x + 44
C) 100 = -5x + 44
D) 100 = -5x + (-44)
Answer:
C
Step-by-step explanation:
Hope this helps :)
Brainest pls?
Answer:
answer c I took it got 100%
Bill lent some money to his two brothers. He wrote down the amounts so he would not forget. The list shows the younger brother with −$17.25 and the older brother with $0. Which of the following statements best describes the amounts?
The older brother paid Bill $17.25, and the younger brother does not owe him any money.
The older brother owes Bill $17.25, and the younger brother does not owe him any money.
The younger brother owes Bill $17.25, and the older brother does not owe him any money.
The younger brother paid Bill $17.25, and the older brother does not owe him any money.
Answer:
the younger brother owes bill $17.25, and the older brother dose not owe him anything
Answer:
i got it right on the trst
Step-by-step explanation:
2926/3 how much is it
Find the constant of proportionality.
Please don't answer if you don't know it. (it doesn't help whatsoever)
The tables represent two linear functions in a system.
What is the solution to this system?
у
0 (43, -25)
0 - 14.-54]
O (-13, -50)
O (-14, -54)
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From left to right for the tables :
[tex]1) \: \: \: \: y = 4x + 2[/tex]
And
[tex]2) \: \: \: \: y = 3x - 12[/tex]
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To find the solution we need to take equal above equations .
[tex]4x + 2 = 3x - 12[/tex]
Subtract sides 3x
[tex] - 3x + 4x + 2 = - 3x + 3x - 12 \\ [/tex]
[tex]x + 2 = - 12[/tex]
Subtract sides 2
[tex]x + 2 - 2 = - 12 - 2[/tex]
[tex]x = - 14[/tex]
Thus the x-coordinate of the solution must be -14 which is just in the last option.
Thus the correct answer is the last one.
Done...
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What percent is represented by this 20-square grid?
A bar diagram with 18 shaded squares and 2 unshaded squares.
%
Answer: This means 38% of the large square is shaded. Incorrect. There are 62 small unshaded squares out of the 100 in the large square, so the percent of the large square that is unshaded is 62%.
...
Example
Problem What percent of the grid is shaded?
Answer 23% of the grid is shaded.
2 more rows
Answer:
The answer is 90
Step-by-step explanation:
Since the shaded part fills in about 3/4 of the diagram, percent multiplied to be 100. please mark me brainliest
The graph of F(x) shown below resembles the graph of G(x)=x^3, but it has been changed somewhat. Which of the following could be the equation of F(x)?
Answer && Step-by-step explanation:
We know f(x) transcribes towards -x axis. thus ruling out b and d (remember signs opposite of what they mean on the board, you would think +# =towards x axis and vice versa also note if multiplied by a negative on the outside, flips signs inside)
choosing A.
plug in values of -x to see if you can get ~= to graph so -5 to -1
x: -5, -4, -3, -2, -1
y: -2, -.25, 0, .25, 2
checks out., A is your answer
The equation for f(x) is F(x) = 1/4(x+3)²
Given is a graph, showing the function g(x) = x³, we need to find the equation for the function f(x) in the graph,
We know f(x) transformed towards x-axis.
We see that, there is a left shift of 3 units, so the function will be (x+3)³
Also, the graph is spread out 4 units, so the function can be 1/4(x+3)³
Hence, the equation for f(x) is F(x) = 1/4(x+3)²
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Do these numbers show a proportion? Help me!
93, 15
62, 10
Answer: Yes
These numbers are a proportion. Let me show an example:
Jenna reads 93 pages of a book in 15 pages. How many pages does she read in 10 minutes?
93 ÷ 15 = 6.2
6.2 x 10 = 62
Answer: She reads 62 pages in 10 minutes.
These numbers can show a proportion like the example listed.
Hope this helps you!
Answer: yeah, sure
93 divided by 15 = 6.2
6.2 x 10 = 62
Help with question 36 please I need it ASAP
Answer:
13 hours, 33 minutes, 20 seconds
Step-by-step explanation:
The swimming pool will hold 1.22 million cubic inches of water, and if it fills up at 1500 cubic inches per minute, it will take 813 minutes and 20 seconds to fill the pool, which means that in simplest form, that will be 13 hours, 33 minutes, and 20 seconds.
Hopefully the answer and explanation helps!
find each sum.
1)-9+(-2)
2)3.2+1.4
3)5.1+(0.7)
4)2.2+(-3.8)
Answer:
1. 18
2. 0.36
3. 3. 57
4. -7. 36
Pls help with 7th grade math pls quick I’ll give brainliest
Answer:
Drops by 1/6
Step-by-step explanation:
1 1/2 /=/ 1 2/3 1 1/2= 1 3/6=1 1/2=1 2/6
Solve the system of equations
y= 2x + 3
y = x - 5
Answer:
This might be the answer- x=−8 y=−13
Step-by-step explanation:
Answer:
x = 2.66 repeating or 2[tex]\frac{2}{3}[/tex]
Step-by-step explanation:
substitute y for x - 5
y = 2x + 3
x - 5 = 2x + 3
subtract 3 from both sides of the equation
x - 5 - 3 = 2x
x - 8 = 2x
subtract x from both sides of the equation
-8 = 2x - x
-8 = -3x
divide both sides of the equation by -3
-8/-3 = x
2.66 repeating = x
Lydia made $56,750 last year. She paid $1200 in student loan interest and
made a $3000 contribution to her IRA. On her federal tax return, she will claim
$52,550 to be her
A. taxable income
B. standard deduction
C. gross income
D. AGI
Answer:
Its AGI
Step-by-step explanation:
Source(s): dude, trust me
Find the measure of angle b
Answer:
I'd say 42 degrees, but I might be wrong.
Step-by-step explanation:
It looks the same as the other labeled angle, which is 42 degrees, so that would make angle b 42 degrees.
find the quotiont463 divided by 6
Answer:
The answer is 77.1666666667
Step-by-step explanation:
If you use a calculator and type in 463 / 6 it will equal 77.1666666667
(/ = divide)
I hope this helped! :)