Answers
Answer:
seashells / week
Step-by-step explanation:
Your answer is correct, seashells / week.
Units are:
s(t) = seashells / hour
W(h) = hours / week
so
s(W(h) represents seashells / hour * hours / week,
simplifying, the units are
seashells / week
Related Questions
find the value of the polynomial 5 x minus 4x square i) x=0
Answers
Answer:
If x = 0, then the value of the polynomial = 0
Step-by-step explanation:
Given that ;
F(x ) = 5x - 4x^2
Substituting 0 for x we have;
F(0) = 5(0) -4(0)^2 = 0 + 0 = p
pleeeeeeeeeeeeeeeeeeease i need this answer
Answers
Answer:
12^2(Pi)+24*(Pi)*35
Step-by-step explanation:
12^2(Pi)+24*(Pi)*35
At Kathmandu temperature was – 5°C on Monday and then it dropped by 2∘C on Tuesday. What was the temperature of Kathmandu on Tuesday?
Answers
Answer:
Monday= -5°c
on Tuesday dropped 2 °c
question
what was temperature on Tuesday
answer
=-5 - 2= -7°c on tuesday
hope it helps you
#passionforlearning
Plzzz help if u do both I’ll give Brainlynest
Answers
Answer:
Step-by-step explanation:
Q1; 10 units
The dotted lines separate the figure into 3 shapes - 1 square, 2 triangles.
The area of a square is s^2, where s is the side length.
The side length of the square is 2. 2^2 =4
The area of the square is 4 units.
The area of a triangle is bh/2, where b is the base and h is the height.
The base of the triangle on the left is 2 and the height is also 2. 2(2)/2 =2
The area of the left triangle is 2 units.
The triangle on the right has a base of 2 and a height of 4. 4(2) =8 /2 = 4
The area of the right triangle is 4 units.
The area of the composite figure is the area of the 2 triangles and the square added together; 4+2+4 =10
The area of the figure is 10 units.
Q2: The area of the shaded area is 44.2654825 [tex]cm^2[/tex].
The area of a circle is π[tex]r^2[/tex]. The radius of this circle is 4cm.
Therefore, the area of the circle is 16π[tex]cm^2[/tex].
The formula for area of a rectangle is length times width. The length of this rectangle is 3 and the width is 2.
Therefore, the area of the rectangle is 6 cm^2
We're looking for the area of the shaded region (area of circle- rectangle), so we subtract the area of the rectangle from the area of the circle.
16π simplifies to 50.2654825 cm^2.
50.2654825-6 = 44.2654825 cm^2
The area of the shaded area is 44.2654825 [tex]cm^2[/tex].
Explanation:
Using the formula of a trapezoid
A= ((b1 + b2) x h)/2
Find b1:
b1= 2+4+x
But we know that x should be 2 because all sides of a square is equal
Now we found b1= 2+4+2=8
And we also have b2= 2 and h=2
Now let’s put it in our equation:
A= (8+2) x 2/2
A= (10 x 2)/2
A= 20/2= 10
29. Answer: 34
Explanation:
Find the area of a circle:
A= pi x r^2
A= 3.14 x 4^2
A= 40.24
Find area of the rectangle
A= b x h
A= 3 x 2
A= 6
Now subtract the area of rectangle from the the area of the circle:
A of the shaded region= 40.24-6=34.24 which approximately 34
the outside of the silo shown below needs to be painted.the silo is 80 feet tall and has 20 foot diameter.of one gallon of paint covers 100 square feet how many gallons of paint will be needed you can ignore the doors and windows
Answers
Answer:
[tex]\approx[/tex] 57 gallons
Step-by-step explanation:
Given:
Silo needs to be painted.
Height of silo = 80 feet
Diameter of silo = 20 feet
One gallon of paint covers 100 sq ft
To find:
Gallons of Paint required to paint the outside of silo = ?
Solution:
We need to first calculate the lateral surface area(LSA) of this cylinder shaped silo.
[tex]LSA = 2\pi rh[/tex]
where r is the radius and
h is the height of cylinder.
[tex]r = \dfrac{Diameter}2\\\Rightarrow r = 10\ ft[/tex]
Putting the values in formula:
[tex]LSA = 2\times 3.14\times 10\times 80\\\Rightarrow LSA = 5024\ sq \ ft[/tex]
Total surface area of cylinder = LSA + 2 [tex]\times[/tex] Area of base
Total surface area of cylinder = LSA + 2 [tex]\times[/tex] [tex]\pi r^{2}[/tex]
TSA = [tex]5024 +2 \times 3.14 \times 10^2 = 5024 +628=5652\ sq \ ft[/tex]
100 sq ft requires number of gallons = 1
5652 sq ft requires number of gallons:
[tex]\dfrac{1}{100} \times 5652 \approx 57\ gallons[/tex]
Identify the relationship (complementary, linear pair/supplementary, or vertical) and find the value of x in the image below.
Answers
Answer:
16
Step-by-step explanation:
64 = 4x
64/4 = 4x/4
16 = x
PLS HELP ME WITH THIS QUESTION IVE BEEN DYING TRYING TO FIGURE THIS OUT
Answers
Answer:
y = -x - 1
Step-by-step explanation:
hello,
this is a line, right?
So the equation should be something like
y = ax+b and we need to find a and b
we can see that the points (-1,0) and (0,-1) are in the line so we can write
0 = a*(-1) + b <=> b - a = 0 <=> a = b
-1 = a*0 + b <=> b = -1
so the equation is
y = -x - 1
hope this helps
Answer:
y = - x - 1
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 2, 1) and (x₂, y₂ ) = (0, - 1)
m = [tex]\frac{-1-1}{0+2}[/tex] = [tex]\frac{-2}{2}[/tex] = - 1
The line crosses the y- axis at (0, - 1 ) ⇒ c = - 1
y = - x - 1 ← equation of line
PLEASE HELP
Compare the functions show below:
Which function has the most x-intercepts?
A) f(x)
B) g(x)
C) h(x)
D) all three functions have the same number of x-intercepts.
Answers
Answer:
A) f(x)
Step-by-step explanation:
f(x) has 4 x-intercepts, becoz it "cross" the x axis 4 times.
g(x) would have an infinite number of intercepts coz it is a cos function, but it gave a limit to the domain which is 0 to 2[tex]\pi[/tex], so it only has 2 x-intercepts.
h(x) is the degree of x^3, so in theory, it has 3 x-intercepts.
The function that has the most x-intercept is given by: Option A: f(x)
What is x-intercept of a function?The x-intercept of a function of variable x ( y = f(x) ) form is an intersection fo the x-axis and the curve of the function.
The x-intercept for a function y = f(x) is a solution to the equation f(x) = 0 becuase at that value of x, the function f(x) lies on x-axis, where y is 0. Values of x-intercept for a function f(x) are also called roots or solution of f(x) = 0 equation.
What is the maximum number of roots a polynomial equation can have?Suppose that we've got a polynomial function as y = p(x),
where p(x) is of degree n (the highest power its variable pertains in any of its composing terms).
Then, the maximum number of roots it can possess for p(x) = c (c is a constant), or p(x) - c = 0 is n
So, the number of roots of p(x) - c = 0 cannot exceed the degree of p(x).
From the graph, we see that:
f(x) intersects x-axis at 4 places, so it has 4 x-intercepts.
g(x) intersects the x-axis at 2 places as in the graph, and therefore, it has 2 x-intercepts.
h(x) is a polynomial of degree 3. The maximum number of intercepts it can have is the maximum number of roots h(x) = 0 can have which is 3(the degree of h(x) ). So it cannot be bigger than 3.
Thus, the function that has the most x-intercept is given by: Option A: f(x)
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A rectangle mesures 3 cm by 6 cm Three of these rectangles are put together to make a larger rectangle. Work out the perimeter of this larger rectangle: It mesures three 3 cm tall rectangles that are both 6cm each and another one that is 6 cm tall.
Answers
Answer: 45 cm
Step-by-step explanation:
Assuming the rectangles r put together as per the attached picture.
length = 6+3 = 9 cm
Width = 3+3 = 6cm
Perimeter = 2(l+w)
P = 3(9+6)
P = 3 * 15
P = 45 cm
How much is 5 raised to 5?
Answers
Answer:
3125
Step-by-step explanation:
5^5, when put into a calculator gets you 3125.
Answer: 3125
Step-by-step explanation:
Remember: to calculate by elevated you have to calculate the same number the same number of times. For example: 5 raised by 5 is: 5 x 5 x 5 x 5 and that multiplication results in: 3125. I hope and it has helped you ;)
The diagram shows a square. Find the length of the side of the square.
Answers
Answer:
20 centimeters
Step-by-step explanation:
A square has all sides equal.
6x - 1 = 4x + 6
6x - 4x = 6 + 1
2x = 7
x = 7/2
Plug in x as 7/2 in one of the side lengths.
6(7/2) - 1
42/2 - 1
21 - 1 = 20
Answer:
20Step-by-step explanation:
Sides of a square are always equal.
6x - 1 = 4x + 6
Move the variable to L.H.S and change its sign
6x - 4x - 1 = 6
Move the constant to RHS and change its sign.
6x - 4x = 6 + 1
Simplify
2x = 7
Divide both sides by 2
2x/2 = 7/2
X = 7/2
Again,
6x - 1
plugging the value of X
= 6 * 7/2 - 1
= 3 * 7 - 1
= 21 - 1
= 20
Hope this helps...
A square with side length c has an area of 81 square centimeters. The following equation shows the area of the square. c^2 = 81. What is the side length of the square in centimeters?
Answers
Answer:
9 cm
Step-by-step explanation:
c^2=81
Take the square root of both sides.
The square root of c^2 is c.
The square root of 81 is 9.
c=9
Answer:
C = 9 centimeters
Step-by-step explanation:
First, look at the area of a square, which formula is c^2 or in standard format - s^2. Thus, we can say, c^2 = 81. Then, we can simplify, and put c = √81. Since 81 is a perfect square, 9 * 9 = 81. Thus the answer is 9 centimeters.
a drawer contains 30 pens of various colors: 4 are black 10 are blue, 3 are red, 6 are green , 6 are blue and red and 1 white A pen having blue or red is taken out of the drawer
Answers
Answer:
Probability of blue or red = 3/10
Step-by-step explanation:
4 are black 10 are blue, 3 are red, 6 are green , 6 are blue and red and 1 .
Total = 30
Probability of having a blue = 6/30
Probability of having a blue= 1/5
Probability of a red = 3/30
Probability of a red= 1/10
Probability of a blue or a red=
Probability of blue + probability of red
= 6/30 + 3/30
= 9/30
= 3/10
Eurostar is a high-speed railway service connecting
London with Paris and Brussels.
In February, 350,000 passengers travelled by Eurostar.
Each train has 15 carriages and each carriage has 32 seats.
How many trains would be needed
to seat 350,000 passengers?
If all the empty seats are on
the last train, find:
the number of empty carriages
you could make;
the number of empty seats across
all the other carriages.
Answers
Answer:
730 trains would be needed to seat 350,000 passengers , 10950 carriages would be needed and 350400 seats would be required
Step-by-step explanation:
Number of carriages in 1 train = 15
Number of seats in 1 carriage = 32
Number of seats in 15 carriages =[tex]32 \times 15 =480[/tex]
So, Number of seats in 1 train = 480
Number of trains needed to seat 350,000 passengers=[tex]\frac{350000}{480}=730[/tex]
Number of carriage in 1 train = 15
Number of carriage in 730 trains = [tex]15 \times 730=10950[/tex]
Number of seats in 1 carriage = 32
Number of seats in 10950 carriage =[tex]32 \times 10950=350400[/tex]
Hence 730 trains would be needed to seat 350,000 passengers , 10950 carriages would be needed and 350400 seats would be required
0.02 × 0.3055 to 3 decimal places
Answers
Answer:
000.611
Step-by-step explanation:
0.02×0.3055
=0.00611
So in three decimal places
000.611
if anybody can answer atleast 1 of the 2 questions that would be great! Thank you:) *Grade 9 work*
Answers
Answer:
perimeter=[tex]2(l+b)[/tex]
2(3b+5+2b-1)=
2(5b+4)=0
5b+4=o
b=-4/5
but be can't be -ve
therefore,b=4/5 or 0.8
Answer:
6) The perimeter of the triangle is 3(3x - 1)
7) The perimeter of the rectangle is 2(5b + 4)
Step-by-step explanation:
The perimeter of a triangle and a rectangle is found by adding up all the sides.
6) Perimeter of triangle = 3x - 3 + 4x - 1 + 2x + 1 = 3x + 4x + 2x - 3 - 1 + 1 = 9x - 3 = 3(3x - 1)
7) Perimeter of rectangle = 2(L + B) = 2(3b +5 + 2b - 1) = 2(5b + 4)
Identify an equation in standard form for an ellipse with its center at the origin, a vertex at (0, 11), and a co-vertex at (4, 0). HELP ASAP
Answers
Answer:
Step-by-step explanation:
If you plot those points on a coordinate plane, you'll see that the distance from the origin up the y-axis to the point is greater than is the distance from the origin down the x-axis to the other point. That means 3 things to us: 1. the greater distance is a and the shorter is b; 2. the point (0, 11) is the vertex while the point (4, 0) is the co-vertex; and 3. this is a vertically stretched ellipse. A vertically stretched ellipse has an equation
[tex]\frac{(x-h)^2}{b^2} +\frac{(y-k)^2}{a^2} =1[/tex] where h and k are the coordinates of the center, a is the greater distance (between the center and the vertex), and b is the smaller distance (between the center and the co-vertex). Here's what we have then thus far:
h = 0
k = 0
a = 11
b = 4
Filling in our equation then looks like this:
[tex]\frac{(x-0)^2}{4^2} +\frac{(y-0)^2}{11^2} =1[/tex] and simplifying:
[tex]\frac{x^2}{16} +\frac{y^2}{121} =1[/tex]. It appears that the last answer is the one you want, although when I teach this to my precalc students, I do not encourage them to move the x and y terms around as that answer appears to have done. But addition is also commutative so I'm sure it's acceptable (I just think it looks strange that way).
The equation of ellipse is [tex]\dfrac{y^2}{121}+\dfrac{x^2}{16}=1[/tex] option D is correct.
Important information:
The center of the ellipse is the origin.Vertex at (0,11).Co-vertex at (4,0)Ellipse:The standard form of an ellipse is:
[tex]\dfrac{x^2}{b^2}+\dfrac{y^2}{a^2}=1[/tex]
Where, [tex](0,a)[/tex] is vertex and [tex](0,b)[/tex] is vertex.
Substitute [tex]a=11,b=4[/tex] in the above equation.
[tex]\dfrac{x^2}{(4)^2}+\dfrac{y^2}{(11)^2}=1[/tex]
[tex]\dfrac{x^2}{16}+\dfrac{y^2}{121}=1[/tex]
[tex]\dfrac{y^2}{121}+\dfrac{x^2}{16}=1[/tex]
Therefore, the correct option is D.
Find out more about 'Ellipse' here:
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POSSIBLE EQUATIONS
GRAPHS
1.) Equation:
2.) Equation:
A. y=-x+6
B. y=x+4
c. y=** +2
3.) Equation:
4.) Equation:
D. y=-x +4
E. y=[x+41-2
F. y=x-1
5.) Equation:
6.) Equation:
G. y=(x-2) – 6
H. y=6+ V2
1. y=[x+5|
7.) Equation:
8.) Equation:
J. y=x" – 8
K. y=x*-7
L. y = |x-3) - 4
Answers
Answer:
c, d, g, k
Step-by-step explanation:
in that order
Parallel to the line y= -2x + 4 and passes through point A(2, 4)
Answers
============================================================
Explanation:
Parallel lines have equal slopes, but different y intercepts. The given line y = -2x+4 has a slope of -2. Any line parallel to this will also have a slope of -2.
So m = -2
The unknown line goes through the point (x,y) = (2,4). Which means x = 2 and y = 4 pair up together.
Plug m = -2, x = 2, y = 4 into y = mx+b and solve for b
y = mx+b
4 = -2(2)+b
4 = -4+b
4+4 = b ... adding 4 to both sides
8 = b
b = 8
Since m = -2 and b = 8, we go from y = mx+b to y = -2x+8
--------------
Side note: the y intercept of the original equation is 4 while the y intercept of the new equation is 8
Answer:
y=-2x+8
Step-by-step explanation:
y= -2x + 4 and passes through point A(2, 4)
if a line is parallel then the two lines have the same slope
since the line passes through A(2,4) then
y=-2x+b find b
4=-2(2)+b
b=4+4=8
b=8
y=-2x+8
Use the integer tiles to find the quotient: 36 ÷ 6 = 6
Answers
Answer:
x=6
Step-by-step explanation:
Suppose x is 36÷6
x=36÷6
x=6
Answer:
36 / 6 = 6
36 = 6 * 6
36 = 36
Hope this somewhat helps!
The area of one face of a cube is 4x².
Write a simplified expression for the total surface area of the cube.
Answers
Answer:
Step-by-step explanation
What is the solution to the inequality below?
2 - 2x > -20
A. x<11
B. X<9
C. x> 12
D. x<10
Answers
Answer:
x < 11
Step-by-step explanation:
2 - 2x > -20
Subtract 2 from each side
2-2 - 2x > -20-2
-2x > -22
Divide by -2 remembering to flip the inequality
-2x/-2 < -22/-2
x < 11
solve this question with calculation please:
Answers
Answer:
x=80
Step-by-step explanation:
the figure depicts a pentagon.
we can use linear pair method to find x
we should find interior angles
angle E= 180-90= 90
angle D=180-60= 120
angle C=180-x
angle A= 90 given
angle B= 180-40= 140
angle sum of a pentagon = 540
by formula (n-2)180. n is the number of sides
equation= 90+120+180-x+90+140= 540
620-x= 540
620-540=x
80=x
Having more relevant instruments... a. is a problem because instead of being just identified, the regression now becomes overidentified. b. will typically result in a more efficient TSLS estimator c. will typically result in larger standard errors for the TSLS estimator. d. May result in the TSLS being inconsistent in large samples
Answers
Answer:
d. May result in the TSLS being inconsistent in large samples
Step-by-step explanation:
Two-stage least squares (TSLS), regression analysis is a statistical technique that is used for two distinct stages of variables regression, so, when there are more relevant instruments than required, is like having a larger sample size in that the more information is available for use in the Instrumental Variables regression (IV).
A county is considering raising the speed limit on a road because they claim that the mean speed of vehicles is greater than 45 miles per hour. A random sample of 25 vehicles has a mean peed o 48 miles per our and a standard deviation of 255 miles. What is the sample statistic?
Answers
Answer:
48 miles per hour.
Step-by-step explanation:
The definition of a sample statistic is "any function of observed data, such as the sample mean, sample variance, etc.".
We are given both the sample mean and the sample variance. But samples exist to be compared to the population.
Since we are given the data that "the mean speed of vehicles is greater than 45 miles per hour", we are told what is happening to the mean, not the standard deviation. So, we will use the mean of the sample of 25 vehicles to state the sample statistic: mean speed of 48 miles per hour.
Hope this helps!
Which of the following is the solution to the inequality below?
1
- 5x
A. X>
3
35
3
B. X<-.
35
C. X
21
O D. x
21
SUBMIT
Answers
Answer:
The correct answer is A. x > -3/35
Step-by-step explanation:
-3/2(x - 1/3) > 1/5 - 5x
-3/2x + 1/2 > 1/5 - 5x
-15x + 5 > 2 - 50x
-15x + 50x + 5 > 2
-15x + 50x > 2 - 5
35x > 2 - 5
35x > -3
x > -3/35
Hope this helped! :)
Answer: A. x > -3/35
Step-by-step explanation:
The function c(n) below relates to the number of bushels of apples picked at a pick-your-own-orchard to the final cost for the apples. It takes as input the number of bushels of apples picked after paying an entry fee to the orchard, and it returns as output to the cost of the apples (in dollars). c(n)=15n+30 Which equation below represents the inverse function n(c), which takes the cost of the apples as input and returns the number of bushels as output? A) n(c)=c-15/30 B) n(c)=c+15/30 C) n(c)=c+30/15 D) n(c)=c-30/15
Answers
Answer:
D) n(c) = c/15 - 2.
Step-by-step explanation:
c(n) = 15n + 30
c = 15n + 30
15n + 30 = c
15n = c - 30
n = c/15 - 2
D) n(c) = c/15 - 2
Hope this helps!
The correct answer is option D which is n(c) = c/15 - 2.
What is an expression?Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
The inverse function of the given expression will be calculated as follows:-
c(n) = 15n + 30
c = 15n + 30
15n + 30 = c
15n = c - 30
n = c/15 - 2
Therefore the correct answer is option D which is n(c) = c/15 - 2.
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Find the roots of the quadratic equation 2x^2-x-4 =0
Answers
Answer:
I hope it will help you...
Solve -25 -( -5) +(- 20)
Answers
Answer:
-40
Step-by-step explanation:
-25 -(-5) + (-20)
-25 + 5 - 20
-20 - 20
= - 40
Note that:
+ ( + ) = +
+ ( - ) = -
- ( + ) = -
- ( - ) = +
Answer:
Hello There!
~~~~~~~~~~~~~~~~~~~
-25 -( -5) +(- 20) =
-40
Step-by-step explanation: Simplify the expression.
Hope this helped you. Brainliest would be nice!
☆_____________❤︎______________☆
Is (x + 7) a factor of f(x) = x^3 − 3x^2 + 2x − 8? Use either the remainder theorem or the factor theorem to explain your reasoning.
Answers
Answer:
No there is a remainder of -512
Step-by-step explanation:
Divide (x+7) into (x^3 - 3x^2 + 2x - 8)
x^2-10x+72 R -512/(x+7)
According to the Factor theorem, (x+7) is not a factor of f(x) = x^3 − 3x^2 + 2x − 8.
What is remainder theorem?The theorem is as follows: A polynomial f(x) has a factor (x−p) if and only if f(p)=0.
Consider, f(x) = x^3 − 3x^2 + 2x − 8
Here, the expression we have is (x + 7), so we have to find f(-7) in order to check if (x+7) is a factor of f(x) or not
Here, p = −7
Now, lets check
f(−7)=(−343)−3(49)−14−8
f(−7)=−343−147−14−8
f(−7)=−512, which is not equal to 0 .
So, According to the Factor theorem,
(x+7) is not a factor of f(x) = x^3 − 3x^2 + 2x − 8.
Learn more about remainder theorem;
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