Answer:
a = d/0.5t²
divide both sides by 1/2t²
Answer:
[tex]a= \frac{2d}{t^2}[/tex]
Step-by-step explanation:
1. When Jack and Jill work together, they can carry a cooler of
water up a hill in 12 hours. When Jill works alone it takes her
7 fewer hours than when Jack works alone. How long would it
take Jack, working alone, to carry a cooler of water up a hill?
9514 1404 393
Answer:
28 hours
Step-by-step explanation:
Let x represent Jack's time. Then Jill's is x-7. Together their rate of carrying water in hills per hour is ...
1/x + 1/(x -7) = 1/12
Multiplying by 12x(x -7) gives ...
12(x -7) +12x = x(x -7)
x^2 -31x +84 = 0 . . . . . subtract the left side and simplify
(x -3)(x -28) = 0 . . . . . . . . . . factor
x = 3 or x = 28 . . . . . . . . . . x-values that make the factors zero
We know the times must be longer than 12 hours, so the value x=3 is extraneous for this problem.
It takes Jack 28 hours to carry the cooler of water up the hill working alone.
Find the missing side length of the right triangle. Be sure to clearly identify
which side is the hypotenuse first. 50 yards and 30 yards
Answer:
40 yards
Step-by-step explanation:
Let the hypotenuse = 50yards
Adjacent = 30yeards
The missing length is x
Using the pythagoras theorem
hyp^2 = opp^2 + adj^2
50^2 = 30^2 + x^2
2500 = 900 + x^2
x^2 = 2500 - 900
x^2 = 1600
x = √1600
x = 40yards
Hence the length of the missing side is 40 yards
help a brotha out please
Find the other endpoint of the line segment with the given endpoint (-1,9) and midpoint (-9,-10).
Answer:
19/8
Step-by-step explanation:
Can use formula y2-y1/x2-x1 :
-10-9/-9--1
-19/-8
What are the coordinates of point Q?
Answer:
(0,-3) because its the coordinate
Finding the common ratio (mostly Integers)
Given the following sequence:
4, 24, 144,864, 5184,...
what is the common ratio?
Answer:
theyre multiplied by 6 each time
Step-by-step explanation:
I’ll give brainliest !!! Pls help!
Khafre was a son of Khufu. He also had a pyramid built, but it was not as big as his father's. The volume of the Pyramid of Khafre is about
2,115,072 cubic meters, and its height is about 136 meters. Approximate the length of each side of the base.
Answer:
S = √3*2,115,072/ 136 =216
Step-by-step explanation:
Solve for x:
x =?
is it;
45?
30?
22.5?
Answer:
x+3x=90
90/4= 22.5
x-22.5
Answer:
22.5
Step-by-step explanation:
its a 90 degree angle
90=3x+x
90=4x
90/4=x
x=22.5
I need help with this math problem
Answer:
tui kobic tor hada kobic furi
length = 25cm, bredth =60 cm, Volume = 7500cm^3. Find height of a cuboid.
Answer:
height = 5cm
Step-by-step explanation:
Volume of the cuboid = length x breadth x height
7500 = 25 x 60 x height
height = 7500 / 1500
height = 5
Answer:5
Step-by-step explanation:
V = l×b×h
h = 7500 ÷ (25×60)
h = 5
Will mark brainliest
Answer:
A and C are the right answers
Step-by-step explanation:
Top row only
3 out of the 12 squares are shaded in therefore 3/12 which you can simplify into 1/4
Left column only
3 out of the 6 squares are shaded in therefore 3/6 which you can simplify into 1/2
I agree I think the correct answers are A and C
A piano that cost Sunset Planos 83, 250 has a markup rate of 52%. Find the selling price of the piano
Answer:
$160,096.15
Step-by-step explanation:
the key word in this problem is the words markup price meaning an increase of 52% from the $83,250 so divide the $83,250 by 52% or .52
How did the artists of the Harlem Renaissance try to combat stereotypes and racism?
Answer:
I answered your other question but I do not know the answer to this one, sorry
Step-by-step explanation:
look up Harlem Renaissance website for information
Simplify the expression (62)4.
Answer:
(31)2 is the answer to (62)4
Step-by-step explanation:
Answer:
The answer is 1,679,616 or 6^8
Step-by-step explanation:
4 x 2 = 8 6^8 = 1,679,616
Which of the following best describes the solution to the equation below?
28 + 6x = 9x
A.
exactly one real solution,
B.
infinite real solutions
C.
no real solutions
D.
exactly one real solution,
Answer:
Option A or D
Step-by-step explanation:
This is because only one variable is their which has only one exact real solution to satisfactory.
Answer:
D. exactly one real solutionStep-by-step explanation:
heres my answer hopes it helps :)
Jackie has one sister. Jackie's sister is 4 years older than her. The girls' ages add up to 28. Write an equation to solve for Jackie's age. *
Answer:
Jackie's age = 12 years and Her sister's age = 16 years
Step-by-step explanation:
Let the age of Jackie be x.
Her sister's age = (x+4)
The sum of ages = 28
ATQ,
x+x+4 = 28
2x+4 = 28
2x = 24
x = 12
Jackie's age = 12 years
Her sister's age = (12+4) = 16 years
Hence, this is the requiredsolution.
pls help question is on picture
Answer:
We know that a triangle has angles that equal to 180°
[tex]45 + x + 77 + x + 72 = 180 \\ 194 + 2x = 180 \\ 2x = 180 - 194 \\ 2x = - 14 \\ x = - 7[/tex]
A= x+72
=-7+72
=65°
can someone help me with this?
What is the solution to the system of linear equations graphed below?
A. (0,4)
B. (4,1/2)
C. (1/2,4)
D. (0,3)
Answer:
b. (4,1/2)
Step-by-step explanation:
1, 3/2 , 9,4 ...
Find the 9th term HELP ASAP
Can someone tell me if I'm right or give me the answer? plzzz. I'm giving 100 points so... just answer quick. 0_0
Answer:
Yes, I think you have the answer correct!
Step-by-step explanation:
I hope you make a good grade!
which expression is equivalent to sin(0.6x) - sin(0.4x)?
Answer:
its 2cos(0.5x) sin(0.1x)
Step-by-step explanation:
Your welcome :)
A camera has a listed price of $833.99 before tax. If the sales tax rate is 8.5%, find the total cost of the camera with sales
tax included.
Round your answer to the nearest cent, as necessary.
Answer:
904.88
Step-by-step explanation:
8.5% of 833.99 is 70.88915
70.88915 + 833.99 = 904.87915
904.87915 rounded to the closest cent is 904.88
Stay safe! <3
Jerry played with friends today, all at different times. He played with Tommy for hours, then Nathan for hours, then Chris for hours.
How many hours did Jerry play with his friends today?
Answer:
twelve hours
Step-by-step explanation:
Answer:
Undefined
Step-by-step explanation:
You told us that Jerry played with all of his friends for hours. You did not give us a specific number of hours for at least two of them. Therefore, we can conclude nothing.
It is undefined.
what is an indulgence?
Answer:
In the teaching of the Catholic Church, an indulgence is "a way to reduce the amount of punishment one has to undergo for sins".
Answer:
In the teaching of the Catholic Church, an indulgence is "a way to reduce the amount of punishment one has to undergo for sins"
Step-by-step explanation:
Indulgence is the action or fact of indulging. (in the Roman Catholic Church) a grant by the Pope of remission of the temporal punishment in purgatory still due for sins after absolution. The unrestricted sale of indulgences by pardoners was a widespread abuse during the later Middle Ages.
Indulgence sentence example. The indulgence accentuated the division between those who accepted and those who rejected it. German chocolates are my only indulgence . I went to a party last night, and there out of five ladies three were Roman Catholics and had the Pope's indulgence for doing woolwork on Sundays.
I'm not sure what the answer is.
Answer:
we can make some assumptions b/c of the marks. on the sides, the double marks means they are the same, and the single marks are also the same length. because those sides are the same lengths.. we can just add up all the sides to find the length around the shape... or the perimeter of it.
Step-by-step explanation:
I'll start with the 14 on the left, and go counter clock wise
14 + 6 + 9 + 5 + 9 + 7 + 14 + (6+7+5) = Perimeter
the last numbers in the parenthesis are from the sides opposite of the long top side, the parts of the other sides adds up to the long top side... sooo,
Perimeter = 82 ( I added in my head , so use a calculator to double check )
Which of these statements are correct about a line segment with a length of 12 units in a coordinate plane? Select all that apply. If it is rotated 270° about the origin, its length will still be 12 units. If it is rotated 90° about the origin, its length will no longer be 12 units. If it is reflected across the line y = –x, its length will no longer be 12 units. If it is translated 18 units to the right, its length will no longer be 12 units. If it is translated 15 units up, its length will still be 12 units. If it is reflected across the y–axis, its length will still be 12 units.
Answer:
yo my fault og what am i looking at i not good at math
Answer:
Sum of interior angles in triangles there are four angles; they add up to 360°
Step-by-step explanation:
C = corner/complementary;simply draw a line on the c so that it becomes 90.
S = straight line/supplementary; Take the su, draw a 1 next to the s, put a slash through the s to make it look like an 8,
Write the complex number in trigonometric form.
z = 5 - 5i
Answer:
[tex] \large \boxed{ \boxed{ \red{ \ \rm 5 \sqrt{2} ( \cos( \dfrac{7\pi}{4} ) + i \sin( \dfrac{7\pi}{4} ) )}}}[/tex]
Step-by-step explanation:
to understand thisyou need to know about:imaginary numberPEMDAStips and formulas:[tex] \sf \: formula \: of \: trigonometric \: form : \\ \rm r( \cos( \theta) + i \sin( \theta) )[/tex][tex] \rm \: r = \sqrt{ {a}^{2} + {b}^{2} } [/tex][tex] \rm \theta = \arctan( \dfrac{b}{a} )[/tex]given:z=5-5ilet's solve:complex number:a+bi
therefore
our a is 5our b is -5[tex] \sf sustitute \: the \: value \: of \: a \: and \: b \: into \: the \: modulus : [/tex]
[tex] \rm \: r = \sqrt{ {5}^{2} + ( { - 5)}^{2} } [/tex]
[tex] \sf simplify \: squres : [/tex]
[tex] \rm \: r = \sqrt{25 + 25} [/tex]
[tex] \sf simplify \: addition : [/tex]
[tex] \rm \: r = \sqrt{50} [/tex]
[tex] \sf rewrite \: 50 \: as \: 2 \times 25[/tex]
[tex] \sf r = \sqrt{2 \times 25} [/tex]
[tex] \sf use \: \sqrt{ab} \iff \: \sqrt{a } \sqrt{b} : [/tex]
[tex] \rm r = \sqrt{25} \sqrt{2} [/tex]
[tex] \therefore \rm \: r = 5 \sqrt{2} [/tex]
[tex] \sf sustitute \: the \: value \: of \: a \: and \: b \: into \: the \: agrument : [/tex]
[tex] \rm \theta = \arctan(\dfrac{ - 5}{5} )[/tex]
[tex] \sf simplify \: divition : [/tex]
[tex] \rm \theta = \arctan( - 1)[/tex]
[tex] \theta = - \dfrac{\pi}{4} [/tex]
[tex] \sf add \: 2\pi \: to \: get \: a \: positive \: agrument[/tex]
[tex] \rm \theta = - \dfrac{\pi}{4} + 2\pi \\ \rm\therefore \: \theta = \frac{7\pi}{4} [/tex]
[tex] \sf \: sustitute \: the \: value \: of \: \rm \: r \: and \: \theta : \\ \rm 5 \sqrt{2} ( \cos( \frac{7\pi}{4} ) + i \sin( \frac{7\pi}{4} ) )[/tex]
[tex]\text{And we are done!}[/tex]
How do you graph (0,3.5)
Answer:
In a coordinate axis, the horizontal line is called the x-axis, and the vertical line is called the y-axis.
1) Then if you have a point (x, y), to graph this you go at the horizontal axis to find the value x,
2) Starting from the point you already found, now you need to move y units in the vertical axis.
Now we want to graph the point (0, 3.5).
First we need to locate the value 0 in the horizontal axis, this is the point where both axes intersect.
Now we move 3.5 units, because the number is positive, we move 3.5 units upwards.
The graph of the point is shown below.
A bridge being designed will cross the river at a right angle. The equation of the left bank of the river is j = 2x+8. The center of the bridge will pass through (0,2). What is the equation of the line representing the bridge?
This is the same as y = -0.5x+2
==========================================================
Explanation:
Refer to the diagram below.
The blue line is the graph of y = 2x+8, which is the left bank of the river.
For now, ignore the y = (-1/2)x+2 in the diagram and pretend we don't know that just yet. The red line is the bridge and it's some linear equation in the form y = mx+b. We're told the bridge is perpendicular to the river, so the bridge must also be perpendicular to the riverbank.
The blue line has slope m = 2. Apply the negative reciprocal to this to end up with -1/2. This is the perpendicular slope, and the slope of the red line. Note how the two slopes (2 and -1/2) multiply to -1. Any two perpendicular lines will have their slopes multiply to -1, as long as neither line is vertical or horizontal.
Since we want the bridge to pass through (0,2), this must mean the y intercept is b = 2.
So with m = -1/2 and b = 2, we go from y = mx+b to y = (-1/2)x + 2 which is the equation of the bridge shown in red.
This is the same as y = -0.5x + 2 since -1/2 = -0.5
plz hurry x3=−8 thanks have a good day
Answer:
x=-2
Step-by-step explanation:
-2 * -2 * -2 = -8