Answer:
\[v(t)=\underset{\text{Δ}t\to 0}{\text{lim}}\frac{x(t+\text{Δ}t)-x(t)}{\text{Δ}t}=\frac{dx(t)}{dt}.\]
Step-by-step explanation:
need rn! worth 25 points (you MUST answer BOTH questions) 谢谢你！
Answer:
Number 1 - 3 terms (B)Number 2 - 2nd and 3rd optionsNumber 1 Explanation:
Terms are separated by addition or subtraction signs.There are three parts separated by two addition/subtraction signs.That means there are three terms.Number 2 Explanation:
Polynomials can't have negative exponents.Polynomials can't have fractional exponents on variables or roots of variables.For the first option, [tex]\frac{1}{x}[/tex] can also be written as [tex]x^{-1}[/tex], so it has a negative exponent and is not a polynomial.The second and third options follow polynomial rules.The fourth option has [tex]x^{\frac{1}{2} }[/tex], which is the same thing as [tex]\sqrt{x}[/tex]. Polynomials can't have roots of variables (or fractional exponents on variables), so this isn't a polynomial.7 1/2 ÷ 3 3/4 equals?
Answer:
2
Step-by-step explanation:
I have a bag with yellow and blue marbles in it. At the moment, the ratio of blue marbles to yellow marbles is 4:3. If I add 5 blue marbles and remove 3 yellow marbles, the ratio will be 7:3. How many blue marbles were in the bag before I added more?
Answer:
4:7 7 being to total number of marbles (part to whole ratio)
There are 16 blue marbles were in the bag before I added more.
What is mean by Ratio?A ratio indicates how many times one number contain in another number. The ratio of two number is written as x : y, which is equivalent to x/y. Where, x and y are individual amount of two quantities. And, Total quantity gives after combine as x + y.
Given that;
The ratio of blue marbles to yellow marbles is 4 : 3.
And, If I add 5 blue marbles and remove 3 yellow marbles, the ratio will be 7:3.
Now,
Since, The ratio of blue marbles to yellow marbles is 4 : 3.
Hence, Number of blue marbles = 4x
Number of yellow marbles = 3x
And, If I add 5 blue marbles and remove 3 yellow marbles, the ratio will be 7:3.
Then, We can formulate;
⇒ 4x + 5 / 3x - 3 = 7x / 3x
⇒ (4x + 5) / (3x - 3) = 7 / 3
⇒ 3 (4x + 5) = 7 (3x - 3)
⇒ 12x + 15 = 21x - 21
⇒ 15 + 21 = 21x - 12x
⇒ 36 = 9x
⇒ x = 4
Thus, The number of blue marbles = 4x
= 4 × 4
= 16
Learn more about the ratio visit:
https://brainly.com/question/169670
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Someone help ASAP plssss
Answer:
49
Step-by-step explanation:
you are given the hypotenuse of 60 and a leg of 35
a^2 + b^2 = c^2
35^2 + b^2 = 60^2
1225 +b^2 = 3600
-1225 -1225
2375
B^2 = square root 2375
48.73 round up to 49
Emily Elizabeth has $1.50 in dimes and nickels. She has 22 coins in all. How many nickels does she have?
Answer:
[tex]14[/tex]
Step-by-step explanation:
We can set up the following system of equations:
[tex]\begin{cases}10d+5n=150\\d+n=22\\\end{cases}[/tex], where [tex]d[/tex] is the number of dimes she has and [tex]n[/tex] is the number of nickels she has.
Multiplying the second equation by -5 and adding both equations lets us isolate and solve for [tex]d[/tex]:
[tex]10d+5n+(-5(d+n))=150+(-5(22)),\\5d=40,\\d=8[/tex]
Plugging [tex]d=8[/tex] into any of the two equations will let us solve for [tex]n[/tex]:
[tex]8+n=22,\\n=\fbox{$14$}[/tex].
Therefore, she has 14 nickels.
How many solutions exist for the given equation?
3x + 13 = 3(x + 6) + 1
Answer:
no solution
Step-by-step explanation:
3x + 13 = 3x + 18 +1
<=> 0x = 6 (impossible!)
Answer:
zehero
Step-by-step explanation:
Please help me! I will brainliest u
Answer:
<
Step-by-step explanation:
Answer:
m D = m C
Step-by-step explanation:
I'll explain later... I have exams hhh
Plz help I do t have much time!!!!!!!!! Which expression is represented by the model?
A.
B.
C.
D.
Answer:
4x-3 or A
Step-by-step explanation: because there are 4 x's and 3 "-" which makes it 4x-3
Answer:
Hi, this is a strange problem but I believe the answer is A) 4x-3.
Step-by-step explanation:
I think the X symbols represent "X"es and the dashes represent single negative digits. I may be wrong, but I think this is what your teacher is most likely looking for. Good luck! :)
3
The following scores of an AP Bio course are listed below. Mr. B wants to figure out the class median for the set of data.
99, 68, 79, 81, 99, 65, 73, 96, 87, 83, 73, 73, 86, 83, 72, 73
What is the median score of data?
79
B 80
73
D 96
81
What is the probability of the complement of spinning an even number by using the spinner below?
A spinner is split into 8 equal parts labeled 1, 2, 3, 4, 1, 2, 3, 5.
StartFraction 3 over 8 EndFraction
One-half
StartFraction 5 over 8 EndFraction
StartFraction 7 over 8 EndFraction
Answer:
C
Step-by-step explanation:
Plssssss help asp it about math and other things pls
Answer:
1) Actual cost was $5,762.50
2) Joe's birthday is on January 1st.
Step-by-step explanation:
1) To find this, since we know they were wrong by an identical amount and one was over and the other was under, we can average the cost to find the difference between the amounts. Then we can add that difference to the lower (or subtract it from the higher) amount:
6950 - 4575 = 2375
2375 / 2 = 1187.50
4575 + 1187.50 = $5,762.50
2) Joe could turn 21 on January 1st, but was 20 on December 31st. Next year Joe would turn 22 on January 1st.
I hope this helps!
-TheBusinessMan
Okay I need 1 and 2 please help
Answer:
1. x=2 y=4
2. x=2 y=2
Step-by-step explanation:
Enter the correct answer in the box. Linear function fis shown in the graph. Write the slope-Intercept form of the equation representing this function.
Answer:
2x+(-7)
Step-by-step explanation:
the point 2 goes through the intercept and -7 goes through the y- intercept
What effect does inflation have on the prices of goods and services?
A. Prices decrease
B. Prices double
C. Prices increase
D. Prices stay the same
Answer:
C, price increases
Step-by-step explanation:
this is correct I promise you.
Answer:
C
Step-by-step explanation:
Prices increase because there is a higher demand for the product, but it does not double because each individual seller can set their price.
A dishonest shopkeeper has two false balances. one balance weighs 10℅ more while buying the goods while other weighs 10℅ less while selling the goods. Find his gain percent just by weighing.
Answer:
gain percentage is 100 % the both percentage sums up to be 100%
Step-by-step explanation:
90+110=200/2
=100
What is the equation, in slope-intercept form, of the line plotted on the graph below?
A. y= - 2/3 x - 1
B. y= 2/3 x -1
C. y= 3/2 x - 1
D. y= 3/2 x - 1
Item 10
Find the interquartile range of the data.
8, 2, 14, 12, 10, 4, 4, 6
Answer:
7
Step-by-step explanation:
3 people can build a shed in 8 hours.
How long would it take 5 people?
Give your answer in minutes.
Answer:
The answer is 288 minutes
Mika has a goal of folding at least 120 paper swans. He can fold 12 paper swans per hour. Which inequaility can Mika use to find h, the number of hours he should fold paper swans to meet or exceed his goal?
Answer: it would take him 10 hours to make 120 paper
Zohad has $30 in a savings account that earns 15% interest per year. How much interest will he earn in 4 years?
Answer:
30/100 X 15 = 4.50
4.50 X 4 = 18
$18
I'm not sure what AAS,SAS,SSS,ASA mean .how do I solve this?
Answer:
AAS is an acronym for Angle-Angle-Side. It basically means that if two angles and a nonincluded side of one triangle are congruent to two angles and the corresponding nonincluded side of a second triangle, then the two triangles are congruent. SAS is an acronym for Side-Angle-Side. It means that if two sides and the included angle of one triangle are congruent to two sides and the included angle of a second triangle, then the two triangles are congruent. SSS is an acronym for Side-Side-Side. It means that if three sides of one triangle are congruent to three sides of a second triangle, then the two triangles are congruent. ASA is an acronym for Angle-Side-Angle. It means that if two angles and the included side of one triangle are congruent to two angles and the included side of a second triangle, then the two triangles are congruent.
In the problem, we know that the corresponding sides of both triangles are congruent to each other, so those would be given. The third side of each triangle would also be congruent because of reflexive property. Reflexive property means that the two triangles share a line segment. So, the answer would be SSS.
6. Solve each equation and check your solution. 3x - 6 = 4(2 - 3x) - 8x
1/2z + 6 = 3/2(z + 6)
9 - 7w = 8w + 8
Answer:
Multiple answers (Work & answers below)
Step-by-step explanation:
Solve the perimeter formula for an isosceles triangle, P = 2a + b for a.
a = P + 2b
a = P – 2b
Answer:
The solution for a is a = [tex]\frac{P-b}{2}[/tex]
Step-by-step explanation:
To solve an equation for one of its variables, do that
Separate the term of this variable on one side and the other terms on the other sidesMake the coefficient of the variable equals1 (if it is not 1)Let us solve the question
∵ The perimeter formula for an isosceles triangle is P = 2a + b
∵ We need to solve it for a
→ By using the first step above, subtract the two sides by b to move it
from the right side to the left side
∵ P - b = 2a + b - b
∴ P - b = 2a
→ By using the second step above, divide both sides by 2
∵ [tex]\frac{P-b}{2}[/tex] = [tex]\frac{2a}{2}[/tex]
∴ [tex]\frac{P-b}{2}[/tex] = a
→ Switch the two sides
∴ a = [tex]\frac{P-b}{2}[/tex]
∴ The solution for a is a = [tex]\frac{P-b}{2}[/tex]
Eli is deciding between two landscaping companies for his place of business. Company A charges $25 per hour and a $300 equipment fee. Company B charges $50 per hour and a $125 equipment fee. Let AA represent the amount Company A would charge for tt hours of landscaping, and let BB represent the amount Company B would charge for tt hours of landscaping. Write an equation for each situation, in terms of t,t, and determine which company would be cheaper if Eli needs 5 hours of landscaping.
Answer:
Company B will charge cheaper in 5 hours
Step-by-step explanation:
Step one:
Given data
Company A
charges $25 per hour and a $300 equipment fee
let the total be
A= 300+25t---------------1
Company B
charges $50 per hour and a $125 equipment fee.
let the total be
A= 125+50t---------------2
put t = 5 in the two expressions above
A= 300+25t---------------1
A= 300+25*5
A=300+125
A=$425
B= 125+50t---------------2
B= 125+50*5
B=125+250
B=$375
Answer:
A = 25t + 300 B = 50t + 125
company B is $50 cheaper than company A for 5 hours of landscaping
This one is hard but I hope someone can help me out
Step-by-step explanation:
please where is the question
Answer:
that one seems a little bit too hard....
HELP ME PLEASE
I WILL BRAINLIEST U
Answer:
that is corresponding
A water tank fills as shown in the graph below. What is the slope of the line?
Answer:
1/3
Step-by-step explanation:
Donna rides her bike at a rate of 19/2 mph how many miles can donna travel in 1/3 of an hour
Answer:
19/2 = 9.5. This is the speed she can ride in a single hour. At that speed, she would travel 9.5/3 miles in 1/3 of an hour. 9.5/3 = 3.1666666666666667
Step-by-step explanation:
The perimeter of a rectangle is 28 inches. The length is 6 less than 3 times the width. What is the length of the rectangle?
Answer: The length is 9 inches.
Step-by-step explanation:
L = 3w - 6 (the length is 6 less than 3 times the width).28 = 2(3w - 6) + 2w (plug in width and length --> multiplied by 2 because of perimeter).28 = 6w - 12 + 2w (distribute)28 = 8w - 12 (combine like terms)40 = 8w (add 12 to both sides)5 = w <-- widthFind the length:
L = 3w - 6L = 3(5) - 6L = 15 -6L = 9 inAnswer:
The length is 9.
Step-by-step explanation:
Help me order the side from shortest to longest
Answer:
Step-by-step explanation:
AB BC AC
(I’m not sure, If Im wrong let me knoww ❤️❤️)
Answer:
AC BA BC shortest to longest.
Step-by-step explanation:
All triangles have 180o in their interior angles. So A + B + C = 180
5x - 4 + 2x + 3 + 3x - 9 = 180 Combine the like terms on the left.
10x - 10 = 180 Add 10 to both sides
10x - 10 + 10 = 180 + 10
10x = 190
x = 190/10
x = 19
So <A = 5x - 4 = 91
<B = 2x + 3 = 41
<C = 3x - 9 = 48
Total 180
So the largest Line is opposite 91 and it is BC
The Middle sides line is opposite 48 and it is BA
The smallest line is opposite 41 and it is AC
AC BA BC shortest to longest.