Answer:
Let $x$ represent the number of minutes. Since she is descending 20 feet per minute, then $-20
Step-by-step explanation:
Tatiana wants to give friendship bracelets to her 32 classmates. She already has 5 bracelets, and she can buy
more bracelets in packages of 4.
Write an inequality to determine the number of packages, p, Tatiana could buy to have enough bracelets.
4p+5=32 or 7 packages
I got this because there are 4 bracelets in one package and she doesn't know how many packages she needs so we put p for packages next to the 4 and you already have 5 so you add the 5 to it, all of that should come out to 32. If the equation wasn't what you were looking for you subtract 5 from 32 and get 27, then you divide 4 by 27 and you get 6.75, then you round it up and you get 7. The number of packages she needs is 7.
A recipe for a batch of 3 dozen chocolate chip cookies calls for 3 cups of flour, 1 cup of sugar, and 2 cups pf chocolate chips. How much of each ingredient should be used to make 2 dozen cookies? plz help me
Answer:
6 cups of flour, 2 cups of sugar, and 4 cups of chocolate chips <3
Step-by-step explanation:
Because you're only making 2 dozen, simply multiply everything by 2 and you'll get the answer of 6 cups of flour, 2 cups of sugar, and 4 cups of chocolate chips!!! hoped this helped and feel free to ask any questions abt this :-)
Simplify 3 x 4t. I am confused, could i get help for this questions on mathematics.
Answer:
Your answer is 12t.
Step-by-step explanation:
To get that take the T away for awhile.
Multiply 3 x 4.
The answer is twelve, so you bring the T back.
It will make it 12+t.
Your answer is 12t.
21. Amanda invests $5,000 in a CD at an annual interest rate of 2%. What will her investment be worth at the end of three years?
What is the solution to 2.8x + 6 > 20?
Answer:
5
Step-by-step explanation:
From the expression 2.8x + 6 > 20
we have,
2.8x + 6 = 20,
2.8x + 6 - (20) = 0 ( Moving all terms to the left)
We then add the numbers and variables together,
to get 2.8x + (6-20) = 0
2.8x + (-14) = 0
2.8x - 14 = 0
2.8x = 14 ( Divide both terms by 2.8x)
2.8x/2.8 = 14 /2.8
x = 14 / 2.8
x = 5
Can Any One help me please
Answer:
its 71
Step-by-step explanation:
i used the calc
Suhana left at 11:45 to a trip to Dubai Expo 2020 and arrived at her destination 4 hours and 25 minutes later. What time did she reach
Answer:
4:10
Step-by-step explanation:
let's start by adding 4 hours to 11:45
12:45
1:45
2:45
3:45
now let's add 25 minutes
3:70
that is 4:10
graph the inequality 2y+1 > 0.8x
Answer:
Below!
Step-by-step explanation:
Graph the inequality by locating the line, then shade the appropriate area.
=> 2y + 1 > 0.8x=> 2y > 0.8x - 1 => y > 0.4x - 1/2Please check out image to understand better.
a yacht that travels 1.375 km in 165 minutes expressed in km/h
The speed of a yacht traveling a distance of 1.357 km in 165 minutes is 0.5 km/h
What is Speed?The speed of an object is the distance covered by the object in respect to time.
Mathematically:
[tex]\mathbf{Speed = \dfrac{distance}{time}}[/tex]
[tex]\mathbf{Speed = \dfrac{1.375 \ km}{165 minutes }}[/tex]
We know that 60 minutes = 1 hour165 minutes = 2.75 hours[tex]\mathbf{Speed = \dfrac{1.375 \ km}{2.75 \ hours}}[/tex]
Speed = 0.5 km/hour
Learn more about calculating speed here:
https://brainly.com/question/4931057
Mary
bought a purse for
$25 and 5 pairs of
socks that cost $4
each. How much did
she spend?
Answer:
$45
Step-by-step explanation:
(25*1)+(4*5)=
25+20=
45
Answer:
Mary spent $45 in total
Step-by-step explanation:
Purse costed $25
She bought 5 pairs of socks
Which was $4 each
The equation to solve this is 25+5(4)
this equals 25+20
Then you add this together and get
$45
hope this helps please mark brainliest :)
WHY YALL KEEP SHOWING ADDS
Answer:
be quiet this is ur first question
Step-by-step explanation:
if 9x^2-6x+5 is rewritten as p^2-2p+5, what is p in terms of x
Answer:
p = 3x
Step-by-step explanation:
p² = 9x² = 3² *x²
p² = (3x)²
p = 3x
6. A right triangle has one vertex on the graph of
y = 9 – x2
, x > 0, at (x, y), another at the origin, and the
third on the positive x-axis at (x,0). Express the area A of
the triangle as a function of x.
[tex]4(4x-4)+x+4=-46[/tex]
Answer:
x=-2
Step-by-step explanation:
[tex]4(4x-4)+x+4=-46\\16x-16+x+4=-46\\17x-16+4=-46\\17x-12=-46\\17x=-34\\x=-2[/tex]
Step-by-step explanation:
Given that:
4(4x - 4) + x + 4 = - 46
Multiply the number outside of the bracket with numbers in the bracket on LHS.
⇛16x - 16 + x - 4 = -46
⇛16x + x - 16 - 4 = -46
⇛16x + x - 12 = -46
Shift constant from LHS to RHS, changing it's sign.
⇛16x + x = -46 + 12
Subtract and add the values on LHS and RHS.
⇛17x = -34
Shift the number 17 from LHS to RHS.
⇛x = -34/17
Simplify the fraction to get the value of x.
⇛-2
Therefore, x = -2
Please let me know if you have any other questions.
Which us the simplified form of
[tex] {p}^{0} [/tex]
how many centermetres are there in a metre
Answer:
100 Centermeters in one meter
Step-by-step explanation:
Hope This Helps
Have A Great Day
Particle P moves along the y-axis so that its position at time t is given by y(t)=4t−23 for all times t. A second particle, particle Q, moves along the x-axis so that its position at time t is given by x(t)=sin(πt)2−t for all times t≠2.
As time t approaches 2, what is the limit of the position of particle Q ? Show the work that leads to your answer.
Show that the velocity of particle Q is given by vQ(t)=2πcos(πt)−πtcos(πt)+sin(πt)(2−t)2 for all times t≠2.
Find the rate of change of the distance between particle P and particle Q at time t=12. Show the work that leads to your answer.
a) The limit of the position of particle [tex]Q[/tex] when time approaches 2 is [tex]-\pi[/tex].
b) The velocity of particle [tex]Q[/tex] is [tex]v_{Q}(t) = \frac{2\pi\cdot \cos \pi t-\pi\cdot t \cdot \cos \pi t -\sin \pi t}{(2-t)^{2}}[/tex] for all [tex]t \ne 2[/tex].
c) The rate of change of the distance between particle [tex]P[/tex] and particle [tex]Q[/tex] at time [tex]t = \frac{1}{2}[/tex] is [tex]\frac{4\sqrt{82}}{9}[/tex].
How to apply limits and derivatives to the study of particle motiona) To determine the limit for [tex]t = 2[/tex], we need to apply the following two algebraic substitutions:
[tex]u = \pi t[/tex] (1)
[tex]k = 2\pi - u[/tex] (2)
Then, the limit is written as follows:
[tex]x(t) = \lim_{t \to 2} \frac{\sin \pi t}{2-t}[/tex]
[tex]x(t) = \lim_{t \to 2} \frac{\pi\cdot \sin \pi t}{2\pi - \pi t}[/tex]
[tex]x(u) = \lim_{u \to 2\pi} \frac{\pi\cdot \sin u}{2\pi - u}[/tex]
[tex]x(k) = \lim_{k \to 0} \frac{\pi\cdot \sin (2\pi-k)}{k}[/tex]
[tex]x(k) = -\pi\cdot \lim_{k \to 0} \frac{\sin k}{k}[/tex]
[tex]x(k) = -\pi[/tex]
The limit of the position of particle [tex]Q[/tex] when time approaches 2 is [tex]-\pi[/tex]. [tex]\blacksquare[/tex]
b) The function velocity of particle [tex]Q[/tex] is determined by the derivative formula for the division between two functions, that is:
[tex]v_{Q}(t) = \frac{f'(t)\cdot g(t)-f(t)\cdot g'(t)}{g(t)^{2}}[/tex] (3)
Where:
[tex]f(t)[/tex] - Function numerator.[tex]g(t)[/tex] - Function denominator.[tex]f'(t)[/tex] - First derivative of the function numerator.[tex]g'(x)[/tex] - First derivative of the function denominator.If we know that [tex]f(t) = \sin \pi t[/tex], [tex]g(t) = 2 - t[/tex], [tex]f'(t) = \pi \cdot \cos \pi t[/tex] and [tex]g'(x) = -1[/tex], then the function velocity of the particle is:
[tex]v_{Q}(t) = \frac{\pi \cdot \cos \pi t \cdot (2-t)-\sin \pi t}{(2-t)^{2}}[/tex]
[tex]v_{Q}(t) = \frac{2\pi\cdot \cos \pi t-\pi\cdot t \cdot \cos \pi t -\sin \pi t}{(2-t)^{2}}[/tex]
The velocity of particle [tex]Q[/tex] is [tex]v_{Q}(t) = \frac{2\pi\cdot \cos \pi t-\pi\cdot t \cdot \cos \pi t -\sin \pi t}{(2-t)^{2}}[/tex] for all [tex]t \ne 2[/tex]. [tex]\blacksquare[/tex]
c) The vector rate of change of the distance between particle P and particle Q ([tex]\dot r_{Q/P} (t)[/tex]) is equal to the vectorial difference between respective vectors velocity:
[tex]\dot r_{Q/P}(t) = \vec v_{Q}(t) - \vec v_{P}(t)[/tex] (4)
Where [tex]\vec v_{P}(t)[/tex] is the vector velocity of particle P.
If we know that [tex]\vec v_{P}(t) = (0, 4)[/tex], [tex]\vec v_{Q}(t) = \left(\frac{2\pi\cdot \cos \pi t - \pi\cdot t \cdot \cos \pi t + \sin \pi t}{(2-t)^{2}}, 0 \right)[/tex] and [tex]t = \frac{1}{2}[/tex], then the vector rate of change of the distance between the two particles:
[tex]\dot r_{P/Q}(t) = \left(\frac{2\pi \cdot \cos \pi t - \pi\cdot t \cdot \cos \pi t + \sin \pi t}{(2-t)^{2}}, -4 \right)[/tex]
[tex]\dot r_{Q/P}\left(\frac{1}{2} \right) = \left(\frac{2\pi\cdot \cos \frac{\pi}{2}-\frac{\pi}{2}\cdot \cos \frac{\pi}{2} +\sin \frac{\pi}{2}}{\frac{3}{2} ^{2}}, -4 \right)[/tex]
[tex]\dot r_{Q/P} \left(\frac{1}{2} \right) = \left(\frac{4}{9}, -4 \right)[/tex]
The magnitude of the vector rate of change is determined by Pythagorean theorem:
[tex]|\dot r_{Q/P}| = \sqrt{\left(\frac{4}{9} \right)^{2}+(-4)^{2}}[/tex]
[tex]|\dot r_{Q/P}| = \frac{4\sqrt{82}}{9}[/tex]
The rate of change of the distance between particle [tex]P[/tex] and particle [tex]Q[/tex] at time [tex]t = \frac{1}{2}[/tex] is [tex]\frac{4\sqrt{82}}{9}[/tex]. [tex]\blacksquare[/tex]
Remark
The statement is incomplete and poorly formatted. Correct form is shown below:
Particle [tex]P[/tex] moves along the y-axis so that its position at time [tex]t[/tex] is given by [tex]y(t) = 4\cdot t - 23[/tex] for all times [tex]t[/tex]. A second particle, [tex]Q[/tex], moves along the x-axis so that its position at time [tex]t[/tex] is given by [tex]x(t) = \frac{\sin \pi t}{2-t}[/tex] for all times [tex]t \ne 2[/tex].
a) As times approaches 2, what is the limit of the position of particle [tex]Q?[/tex] Show the work that leads to your answer.
b) Show that the velocity of particle [tex]Q[/tex] is given by [tex]v_{Q}(t) = \frac{2\pi\cdot \cos \pi t-\pi\cdot t \cdot \cos \pi t +\sin \pi t}{(2-t)^{2}}[/tex].
c) Find the rate of change of the distance between particle [tex]P[/tex] and particle [tex]Q[/tex] at time [tex]t = \frac{1}{2}[/tex]. Show the work that leads to your answer.
To learn more on derivatives, we kindly invite to check this verified question: https://brainly.com/question/2788760
What value of b will make the expressions −12.8x+b and −3.2(4x−2.1)+2.4 equivalent?
Enter your answer in the box.
Step-by-step explanation:
-12.8x + b = -3.2(4x - 2.1) + 2.4 =
= -12.8x + 6.72 + 2.4
b = 6.72 + 2.4 = 9.12
Please help due today
Answer:
Step-by-step explanation:
Find each angle measure
Answer:
I have attached a photo. That might help you out.
if anything remains unclear, feel free to let me know in the comments.
a jar of cookies countains 9 vanilla and 9 chocolate cookies. what is the smallest number that must be removed (without looking) to be sure that at least 1 cookie removed will be chocolate?
Answer:
10
Step-by-step explanation:
It's possible to take all of the vanillas before you finally get a chocolate.
divide -2^3-5x^2+4x+2 by x+2
Answer:
−5x+14−34/x+2
Step-by-step explanation:
Pls, choose me as brainliest!
find the value -2/3x^2 + 5x - 2 when x = -3 brainly
Answer:
-23 is the final answer
Step-by-step explanation:
[tex](\frac{-2}{3})x^{2} + 5x - 2[/tex]
[tex](\frac{-2}{3})(-3)^{2} + 5(-3) - 2[/tex]
[tex]-23[/tex]
Which of these algebraic expressions matches the verbal description "k cubed plus 7"? a. k3 +7 b. (k + 7) C. k + 73 d. 3k + 7 e 30k + 7)
Answer:
A
Step-by-step explanation:
Just as squared has an exponent of 2, cubed has an exponent of 3.
Therefore, k is seen as [tex]K^{3}[/tex] (or K^3 if that is too small to see)
Another keyword is "plus" as this indicates addition which has a symbol of +
So in this case, your answer would be A) K^3 + 7
Which side of triangle should be known?
Answer:
the included side or the shortest side
Cameras R Us buys cameras at wholesale and sells them at a 40% markup. Use the diagram to find the wholesale price of a camera the store sells for $77.100 percent = wholesale price. 40 percent markup. Retail price = 77 dollars.$45$50$55$60
Answer:
Your answer would be c
Step-by-step explanation: i did the question
Answer:
55.00
Step-by-step explanation:
Im smart
Please help me solve this equation please and thank you
Answer: (x, y) = (3, 4)
This is the same as saying x = 3 and y = 4 pair up together
======================================================
Explanation:
Subtract the equations straight down.
The x terms subtract to 5x (because -5x-(-10x) = -5x+10x = 5x)The y terms subtract to 0 (because 2y-2y = 0)The right hand side values subtract to 15 (because -7-(-22) = -7+22 = 15)After all that is said and done, we have this new equation
5x = 15
Divide both sides by 5 to get x = 3
Then we use this x value to find y
-5x+2y = -7
-5(3)+2y = -7
-15+2y = -7
2y = -7+15
2y = 8
y = 8/2
y = 4
Or,
-10x+2y = -22
-10(3)+2y = -22
-30+2y = -22
2y = -22+30
2y = 8
y = 8/2
y = 4
Either way, we end up with y = 4.
Overall, the solution as an ordered pair is (x, y) = (3, 4)
If you were to graph the two equations, they intersect at the location (3,4).
Answer:
Step-by-step explanation:
-5x + 2y = -7 --------------------(I)
-10x + 2y = -22 ------------------(II)
Multiply the whole equation (I) by (-1) and then add.
(I)*(-1) 5x - 2y = 7
(II) -10x+2y= -22 {Now add. y will be cancelled}
-5x = -15
x = -15/(-5)
x = 3
Plugin x = 3 in equation (I)
-5*3 + 2y = -7
-15 + 2y = -7
2y = -7 +15
2y = 8
y = 8/2
y = 4
Will someone help me with this problem please.
Answer:-5 10 ,13
Step-by-step explanation:
Which quadrilateral has one pair of parallel sides, but is not a parallelogram?.
Only the trapezoid has one pair of parallel side while all the other quadrilateral( in this question) square, rhombus and rectangle has two pair of parallel sides.
Write an expression equivalent to
- 3+ y - 4 - 12/31
