The number of weeks that it takes to empty the lake is; 350/11 weeks
How to solve fraction problems?We are told that Officials begin to release water from a full man-made lake at a rate that would empty the lake in 14 weeks, but a river that can fill the lake in 25 weeks is replenishing the lake at the same time.
Let w = number of weeks required to empty the lake
let the completed job = 1 (an empty lake)
Thus;
w/14 - w/25 = 1
Multiply through by 350 to get;
25w - 14w = 350
11w = 350
w = 350/11 weeks
Thus, the number of weeks that it takes to empty the lake is; 350/11 weeks
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A ball is thrown from an initial height of 6 feet with an initial upward velocity of 40 fVs. The ball's height h (in feet) after / seconds is given by the following.
h=6+401-16r²
Find all values off for which the ball's height is 28 feet.
Round your answer(s) to the nearest hundredth.
The value for which the ball's height is 28 feet are 0.817sec and 1.683sec using quadratic equations.
What is a quadratic equation?
In algebra, a quadratic equation( from Latin quadratus' forecourt') is any equation that can be rearranged in standard form asax^2 + bx + c = 0
where x represents an unknown, and a, b, and c represent known figures, where a ≠ 0. is still, not quadratic, as there's no ax^2 term,( If a = 0( and b ≠ 0) also the equation is direct.)
The figures a, b, and c are the portions of the equation and may be distinguished by calling them, independently, the quadratic measure, the direct measure, and the constant or free term.The values of x that satisfy the equation are called results of the equation, and the roots or bottoms of the expression on its left-hand side. A quadratic equation has at most two solutions.Given,
h(0)=6 ft (six)
v(0)=40 ft/sec (fourty)
h(t)=6+40t-16t2 (equation)
for h=28 ft(twenty eight)
28=6+40t-16t2 (equation)
or 16t2 - 40t + 22 = 0 (equation)
or 8t2 - 20t + 11= 0(equation)
on solving the quadratic equation
t=0.817sec and 1.683sec (answer)
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A shirt and a tie are 57 together if the shirt is $29 more than the tie how much money is the Tie worth
Answer:
$14
Step-by-step explanation:
The tie costs x.
The shirt costs x + 29
Together they cost $57.
x + x + 29 = 57
2x + 29 = 57
2x = 28
x = 14
Answer: $14
Answer:
14
Step-by-step explanation:
Tie is X
Shirt is x + 29
So,
X+X+29= 57
2x+29= 57
57-29= 2x
28=2x
X= 14
So tie is 14 bucks
graph the lines Slope -1 passing through point (2,2)
The graph of the equation (y = x ) is attached below and this can be determined by using the point-slope form of the line.
Given :
A line with a slope of 1 that passes through the point (2,2).
The following steps can be used in order to sketch the graph a line with a slope of 1 that passes through the point (2,2):
Step 1 - First, determine the equation of the line that passes through the point (2,2) and has a slope of 1
Step 2 - Point-slope form can be used in order to determine the equation of a line.
y-y1 = m(x- x1)
where m is the slope and (x1, y1) is the point on the line.
Step 3 - Substitute the known terms in the above formula.
y-2 = 1(x-2)
Step 4 - Simplify the above equation.
y-2=x-2
x=y
Step 5 - Now, graph the above equation. The graph of the equation
(y = x ) is attached below.
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what is 4.32 x 10^4 written in standard form
Answer:
43,200
Step-by-step explanation:
4.32 x 10∧4
10 x 10 x 10 x 10
4.32 x 10000
43,200
vertical compression by a factor of 1/3 and a reflection of why axis f(x)= 6x-2
Answer: f(x)=(-6x-2)/3
Step-by-step explanation:
f(x)= 6x-2
f(x)= (6x-2)*1/3 ==>Vertical compression
f(x)=(6x-2)/3
f(x)=(6(-x)-2)/3 ==> reflection over y-axis is when x is being negated
f(x)=(-6x-2)/3
what is the answer to this?? lmk asap pls and i need the right answer
Answer: no, no, no, yes
Step-by-step explanation:
Hello!
Just take each value of "u" and multiply it by 4. If the answer is smaller than 32, it is a solution. If not, it isn't a solution.
2/3x=6
a. x=9
b. x=4
c. x=18
d. x=12
option (a) x = 9
Step-by-step explanation:
2/3x = 6
2x = 18
x = 18/2
x = 9.
Martha has 9 feet of red ribbon and 6 feet of green ribbon. How many yards of
ribbon does she have altogether?
Answer:5
Step-by-step explanation:9 ft of red ribbon plus the 6 ft of green ribbon would make 15 feet of ribbon
1ft=3yds
Which mean you would have 5 yards of ribbon.(15 divided by 3=5)
Find the area of AXYZ. (Hint: Draw a rectangle whose sides contain points X, Y, and Z.)
Ay
Y
-4
X
-2
Area: I
4
2
-2
N
2
square units
4 x
So
The area of triangle XYZ is of 13.3 units².
What is the missing information?The missing information are the vertices of the triangle, given as follows:
X(-3,2).Z(1,-1).Y(3,4).What is the area of a triangle?The area of a triangle is given by half the base multiplied by the height, that is:
A = 0.5bh
For this problem, the have that the base is the length of segment XZ, which is found applying the distance between two points as follows:
[tex]b = \sqrt{(1 + 3)^2+(-1 - 2)^2}[/tex]
b = sqrt(25)
b = 5.
The height is the distance between the midpoint of XZ and Y. The midpoint of XZ(mean of the coordinates) is (-1, 0.5), hence the height is:
[tex]h = \sqrt{(-1 - 3)^2+(4 - 0.5)^2}[/tex]
h = sqrt(4² + 3.5²)
h = 5.32.
Thus the area of the triangle is given by:
A = 0.5 x 5 x 5.32 = 13.3 units².
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How much must be the last repayment be made if the loan is terminated after 5 year for which a loan of K10,000 is taken at 12% p.a. flat, where the loan is repaid by equal quarterly repayments for 9 years?
Answer:
Step-by-step explanation:
1.2 A pyramid, with the base similar to an obtuse-angled triangle as indicated by the diagram below. A = 110°, B = 40° and BC = 6 meters. The perpendicular height of the pyramid is 8 meters
1.Calculate the length of AB
2.Calculate the area of the base.
3.Calculate the volume of the pyramid
a) The length of the side AB is approximately 11.276 meters.
b) The area of the base of the pyramid is approximately equal to 6.161 square meters.
c) The volume of the pyramid is equal to 16.429 cubic meters.
What are the length of a side, the surface area and the volume of a pyramid?a) The picture shows a pyramid with a triangular base, the triangle has one obtuse angle and the length of the side AB can be found by the law of the sine:
6 / sin 110° = AB / sin 30°
AB = 6 × (sin 30° / sin 110°)
AB ≈ 3.193 meters
The length of the side AB is approximately 11.276 meters.
b) First, find the length of the side AC:
6 / sin 110° = AC / sin 40°
AC = 6 × sin 40° / sin 110°
AC ≈ 4.104 meters
Second, determine the area of the triangular base by Heron's formula:
s = 0.5 · (AC + BC + AB)
s = 0.5 · (4.104 m + 6 m + 3.193 m)
s = 6.649 m
A = √[s · (s - AC) · (s - BC) · (s - AB)]
A = √[6.649 · (6.649 - 4.104) · (6.649 - 6) · (6.649 - 3.193)]
A ≈ 6.161 square meters
The area of the base of the pyramid is approximately equal to 6.161 square meters.
c) The volume of the pyramid can be found by using the following expression:
V = (1 / 3) · A · h
Where:
A - Area of the pyramid base, in square meters.h - Height, in meters.If we know that A ≈ 6.161 square meters and h = 8 meters, then the volume of the pyramid is:
V = (1 / 3) · (6.161 m²) · (8 m)
V = 16.429 m³
The volume of the pyramid is equal to 16.429 cubic meters.
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Sixty-three and six-teen-thousandths
Answer:
63 and 16,000
Step-by-step explanation:
Allison ran 5 miles in 40 minutes before running an additional 3 miles in 27 minutes is this proportional are not pls help ASAP
Answer:
no it is not proportional...
Step-by-step explanation:
5 miles/40 minutes is 1/8
3 miles/27 minutes is 1/9...
I need help
What is x/10 = 4
Answer:
40
Step-by-step explanation:
another answer to something elsse it might help Solve for x x-4=10. x − 4 = 10 x - 4 = 10. Add 4 4 to both sides of the equation. x = 10+ 4 x = 10 + 4. Add 10 10 and 4 4. x = 14 x = 14.
Answer:X=40
Step-by-step explanation:
reflection across the y-axis please I need help
Suppose that 14 inches of wire costs 84 cents.
At the same rate, how much (in cents) will 11 inches of wire cost?
Answer:
11 inches of wire will cost 66 cents
Step-by-step explanation:
14 inches - 84 cents
find unit rate by dividing 84 by 14
84/14=6
so is is 6 cents per inch
so multiply 6 by 11
11 inches of wire will cost 66 cents
1. Which of the following sequences are arithmetic?
For those sequences that are arithmetic, identify
d and write an expression for an, in terms of n, the
term number.
I. 100, 98, 96, 94, . . .
II.
64, 32, 16, 8, ...
III. 2¹+1, 22+1, 23 +1,24 + 1,...
IV.
3 13 17 7
4'12'12'4
.....
The arithmetic sequence from the collection is I
an = 100 +( n + 1) 2
What is an arithmetic sequence?For an arithmetic sequence, the difference between consecutive terms is always the same, and it is called common difference 'd'.
The nth term of an arithmetic sequence is expressed as;
[tex]an = a + ( n + 1) d[/tex]
Thus, the arithmetic sequences are given as follows:
100, 98, 96, 94, . . . d = 2For the other sequences, there are different differences between consecutive terms, hence the sequence is not arithmetic, for example:
The nth term is given as;
an = 100 +( n + 1) 2
Thus, the arithmetic sequence from the collection is I
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Solve.
c = kny, for y
The solution of the equation c = kny, for y is y = c/kn
How to solve the equation c = kny, for y?The equation is given as
c = kny
Divide both sides of the given equation by k
So, we have
c/k = kny/k
Evaluate the quotient on both sides of the above equation
So, we have
c/k = ny
Divide both sides of the above equation by n
So, we have
c/kn = ny/n
Evaluate the quotient on both sides of the above equation
So, we have
c/kn = y
Rewrite as
y = c/kn
Hence, the solution of the equation c = kny, for y is y = c/kn
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What number is under the fraction bar
Answer:
Denominator
Step-by-step explanation:
The Denominator is under the fraction bar. The numerator is above the bar
Answer:
Denominator
Step-by-step explanation:
Denominator: The number below the fraction bar in a fraction; it tells the total number of equal parts.
I hope this image helps.
I can't understand,
Answer:so dividing you add a extra zero behind the dot or point while multiplying you decrease the decimal to a whole number
if it is right pls give me brainliest
Step-by-step explanation:The relationship between 0.8 divided by 10^2 and 0.8x10^2 is that 0.8 divided by 10^2 means you add extra zero to the dot like this 0.008 so what it mean is that 10^2 is to add extra zeros in front of the point or dot in 0.8 while 0.8x10^2 decreases the zero like this 80 so we remove the 0 in 0.8 which mean 0.8 is no longer a decimal but a whole number now and then add a extra zero because 10^2 mean add two zeros so if you see a number infornt of 10^ like 2 is how many zeros you add. so you add to extra zeros to 0.8 which decreases
Please help i dont understand
Answer :
1) If x = 6
Substitute 6 for x in the expression.
a) 5x-9
5(6)-9
30-9
21
b) 2x-7
2(6) -7
12-7
5
c) 8x+5
8(6)+5
48+5
53
d) 4(x+3)
4(6+3)
4(9)
36
e) x²-(-4)
6²-(-4)
36+4
40
f) 3x²+1
3(6²)+1
3(36) +1
108+1
109
2) Solve
a) 54 = 3x
Divide both sides by 3.
54/3 = 3x/3
x = 18
b) x-9 = -3
Add 9 to both sides.
x-9+9 = -3+9
x = 6
c) x/7 = 140
Express the 140 over 1 and cross multiply.
x/7 = 140/1
x = 140×7
x = 980
d) x/8 = 72
Express the 72 over 1 and cross multiply.
x/8 =72/1
x = 72×8
x = 576
Evaluate and leave your answer in simplest form
(-4/3) (5/12) (9/10) step-by-step
Do children weigh 160 pounds together the oldest weighs 120lbs more how much do they each weigh
Answer:
One child weighs 120lbs, and the other weighs 40lbs.
Step-by-step explanation:
Assuming that you meant "Two" instead of "Do", there are two children that weigh 160 pounds together. If we know that one child weighs 120lbs more, we know that the other child has to weigh 40lbs using the equation below where x represents the weight of the second child:
120 + x = 160
Subtract 120 from both sides
x = 40
FINAL ANSWER: One child weighs 120lbs, and the other weighs 40lbs.
Help please asap i need it
4/5 divided 1/10 math problem trying to figure out
Answer:
8
Step-by-step explanation:
(4/5)/(1/10)
oreja
take the top most number and bottom most number, multiply the two. Then multiply the two middle numbers.
(4*10)/(5*1)
Simplify and you get:
40/5
=8
HELP I DONT UNDERSTAND MY MATH HOMEWORK AND I HAVE 3 PAGES OF IT
as a contractor to make a hole 4 5/8 inches diameter. express the mixed number as an improper fraction.
The mixed number as an improper fraction is 37/8
How to express the mixed number as an improper fraction?The diameter is give as:
Diameter = 4 5/8
Next we convert the above number to an improper fraction
The numerator is calculated as
Numerator = 8 * 4 + 5
This gives
Numerator = 37
Hence, the mixed number as an improper fraction is 37/8
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HELP ILL GIVE BRAINLIST
Answer:
equation: x + 50 = 180
solution x = 130
Step-by-step explanation:
supplementary: angles that add to 180
50 + x = 180
180 - 50 = 130
x = 130
Answer:
the equation is x+50=180
solution is 130
Step-by-step explanation:
A straight line is 180 degrees so 180-50=130
So the equation is x+50=180
solution is 130
5. Combien de paires de nombres naturels peut-on former dont : a) la somme est 23? b) la différence est 100?
Answer: a) 24 b) infini
Step-by-step explanation: a) parce que tu peut faire que 24 somme pour faire 23. B) infini car tout plus haut 100 fonctione
M is the midpoint of AB. Q is the midpoint of AM. and T is the midpoint of QM. If the coordinates of A and B are a and b. find the coordinates of Q and T in terms of a and b.
The the coordinates of Q and T in terms of a and b is -
Q [(3a + b)/4] and T [(5a + 3b)/4].
What is Mid-point of a Line segment?
The mid-point of a line segment is a point on the line segment which divides it into two equal parts.
Given is a line segment AB whose mid-point is M with a and b being the coordinates of A and B respectively. Further, Q is the midpoint of AM and T is the midpoint of QM.
[Refer to the image attached for clear explanation]
Since M is the mid-point of AB, therefore the coordinates of point M will be = M [(a + b)/2]
Now, Q is the mid-point of AM. Therefore, the coordinates of Q will be =
[(a + b)/2 + a]/2 = Q [(3a + b)/4]
and
T is the mid-point of QM. Therefore, its coordinates will be =
(a + b)/2 + (3a + b)/4 = T [(5a + 3b)/4]
Hence, the the coordinates of Q and T in terms of a and b is -
Q [(3a + b)/4] and T [(5a + 3b)/4]
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