Answer:
B
Step-by-step explanation:
This is so because, since precise information is required regarding a particular group of students (7th graders), it would be correct to target members of that group to obtain the first samples of information.
That is, by going to the most reliable source, a more reliable sample would be obtained.
A regulation basketball has a diameter of about 9 in. What is the best approximation for the volume of this ball? 3050 in³ 382 in³ 215 in³ 84. 8 in³.
The best apporximation for the volume of this ball is 382 cubic inches.
What is the volume of the ball?
The volume of the ball is calculated by the formula V = 4 / 3πr³. This formula is the same in the whole world.
Given
A regulation basketball has a diameter of about 9 in.
The radius of the ball is;
[tex]\rm Radius = \dfrac{Diameter}{2}\\\\Radius=\dfrac{9}{2}\\\\Radius=4.5\ inches[/tex]
The volume of the ball is;
[tex]\rm Volume =\dfrac{4}{3}\pi r^3\\\\Volume=\dfrac{4}{3} \times 3.14 \times 4.5^3\\\\Volume =\dfrac{144.53}{3}\\\\Volume = 381.51\\\\Volume = 382 \ In^3 \ apporx[/tex]
Hence, the best apporximation for the volume of this ball is 382 cubic inches.
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What is y=-1/4x+4 written in standard form?
Answer:
x + 4y = 16
Step-by-step explanation:
have a good day
Answer:
x + 4y = 16
Step-by-step explanation:
Starting at noon, the temperature dropped steadily at a rate of 0.8 degrees Celsius every hour. For each of these situations, write and solve an equation and describe what your variable represents. a. How many hours did it take for the temperature to decrease by 4.4 degrees Celsius?
Answer:
5.5 hours
Step-by-step explanation:
For every 1 hour, there is a 0.8 degrees Celsius drop in temperature.
Let "t" represent the total amount of temperature dropped.
Let "h" represent the number of hours
The given scenario can be represented with the equation below:
[tex] t = 0.8h [/tex]
To find the number of hours (h), it takes for the temperature to decrease by 4.4 degrees Celsius, plug in the value of t in the equation, and solve for h.
[tex] t = 0.8h [/tex]
[tex] 4.4 = 0.8h [/tex]
Divide both sides by 0.8
[tex] 5.5 = h [/tex]
It would take 5.5 hours for the temperature to decrease by 4.4 degrees Celsius.
What is the solution to the system of equations below?
x + 3 y = 15 and 4 x + 2 y = 30
(7 , 2)
(2, 7)
(4, 3)
(3, 4
Answer:
Step-by-step explanation:
x + 3y = 15 ×4
4x + 2y = 30 ×1
4x + 12y = 60
- - -
4x + 2y = 30
10y = 30
y = 30/10
y = 3
To solve for x, substitute y = 3 into any of the equations
x + 3(3) = 15
x + 9 = 15
x = 15 - 9
x = 6
(6,3)
This should be the answer but I don't see that in the options u listed, so I don't know what else it should be.
The required solution to the system of equations is (x, y) = (6, 3).
Given the system of equations:
x + 3y = 15
4x + 2y = 30
Multiply Equation 1 by 2 to make the coefficients of y in both equations equal:
2(x + 3y) = 2(15)
2x + 6y = 30
Subtract Equation 2 from the modified Equation 1 to eliminate the variable x:
(2x + 6y) - (4x + 2y) = 30 - 30
-2x + 4y = 0
Divide the resulting equation by 2 to simplify it further:
-x + 2y = 0
Now, we have a new equation:
3) -x + 2y = 0
Add the new Equation 3 to the original Equation 1 to eliminate the variable x again:
(x + 3y) + (-x + 2y) = 15 + 0
5y = 15
Solve for y:
y = 15 / 5
y = 3
Now, substitute the value of y back into Equation 1 to find x:
x + 3(3) = 15
x + 9 = 15
x = 15 - 9
x = 6
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Joogh bought reaps for $3 each and biscuits for $6 each. The total cost was 108. Write an equation in standard form showing the relationship reaps (x) and biscuits (y)
Answer:
3x + 6y = 108
Step-by-step explanation:
We are given the cost of x ($3) and y ($6) and the total cost (which will be on the right side of the = sign)We know that x + y = total. This means that we will add $3 and $6 to get the total.You would multiply $3 by x in case there is more than one reap purchased. This applies to biscuits as well.In conclusion, you would use this information to get...3x + 6y = 108 (or $3y + $6y = $108)If I am incorrect in my reasoning, please let me know so that I can plan better for my future answers. Have an amazing day.
A right cylinder is sliced perpendicular to its base.
What is the shape of the resulting two-dimensional cross section?
A. Triangle
B. Trapezoid
C. Circle
D. Rectangle
When a right cylinder is sliced perpendicular to its base, the cross section that we will have is
D. Rectangle
Mensuration of SolidsDescription of Rectangle
A rectangle is a solid shape with six faces and four vertices, it has two of it sides equal.
Description of Cylinder
We have the square based cylinder, the triangular base cylinder etc.
Unlike the Rectangle, the cylinder has no vertice.
Please see attached the image of cylinders
Learn more about cylinders here:
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Answer:
The players club is playing with the players
Step-by-step explanation:
give me a good Answer to my Question
What is the scale factor of this dilation? a:1/2 b:2/3 c:3/4 d:3/2
Answer?
What is it?
7m-7-6m-16=1+4m
7m-7-6m-16=1+4m
7m - 6m - 7 - 16 = 1 + 4m
m - 23 = 1 + 4m
m - 23 + 23 = 1 + 23 + 4m
m = 4m + 24
m - 4m = 4m - 4m + 24
-3m = 24
m = 24: (-3)
m = - 8
hi again,
7m-7-6m-16=1+4m
7m-6m-4m=1+7+16
-3m=24
m=24/-3
m=-8
Hope this helps
Someone help me please!
Answer:
Your answer is no.
Step-by-step explanation:
It is only proportional up till 3/84, the next one is 4/112, not 4/100
URGENT
A mailman (M) is located 450 feet from a Post Office (P). The mailman notices a bird (B) flying at a 42° angle of elevation from his line of sight. How high (h) is the bird flying over the Post Office? Round to the nearest whole number. (Show all work)
Answer:
We can use the sine law to find h. First, we determine the angle between the line of sight and h:
180 - 90 - 39 = 51 degrees
The sine law states that the ratio of one triangle's angle to the opposite side's length is the same as another angle to its opposite side's length, so we can solve for h as follows:
h/sin(39) = 500/sin(51)
h = 500*sin(39)/sin(51)
When we round to the nearest whole number, we get h = 405 ft.
Cual es la ecuación de la recta que pasa por el punto (1, 2) y tiene una inclinación de 71.56505118
Answer:
La inclinación de una recta esta definida como el ángulo entre el eje x positivo y la recta.
Primero, podemos escribir genéricamente una recta como:
y = p*x + s
donde p es la pendiente de la recta, y s es la ordenada al origen.
Sabemos que para una recta que pasa por los puntos (a, b) y (c, d) podemos escribir la pendiente como:
p = (d - b)/(c - a)
Y también sabemos que si θ es el ángulo de inclinación, entonces:
p = tan(θ)
Entonces en este caso sabemos que:
p = tan(71.56505118°) = -0.828
Entonces esta recta es:
y = -0.828*x + s
y sabemos que pasa por el punto (1, 2), entonces podemos remplazar esos valores en la ecuación para encontrar el valor de s.
2 = -0.828*1 + s
s = 2 + 0.828 = 2.828
La ecuación es:
y = -0.828*x + 2.828
Which graphs show a proportional relationship? Select all that apply.
Answer:
A, D
Step-by-step explanation:
The graph of a proportional relation is a straight line that passes through the origin.
Answer: A, D
A rectangular driveway is 40 feet long
and 14 feet wide. What is the
perimeter of the driveway?
Answer:
p=108
Step-by-step explanation:
Answer:
108 ft^2
Step-by-step explanation:
_____________
| |
| |
| | 40ft
| |
| |
_____________
14ft
40+40+14+14 = 108 ft squared
how to do this question plz
Step-by-step explanation:
Hey there!
Here;
The equation is; y = 3x + 2
X = -2 -1 1 2
y = -4 -1 5 8
Now; the coordinates are ; (-2,-4), (-1,-1), (1,5), (2,8).
After this plot them on graph.
Hope it helps..
I just need help so can someone help me with the answer and walk me through the work
8. 4x²+3y = 4(4)²+3(5) = 4(16)+15 = 64+15 = 79
basically you have to substitute the variable for the given value. (ex. x is replaced by 4 and y is replaced by 5 and z is replaced by 3) FOR BOTH PROBLEMS!
9. (y+z)/x = (5+3)/4 = 8/4 = 2
Hannah has a credit card with an APR of 11. 90% and a billing cycle of 30 days. The following table shows Hannah’s transactions in the month of April. Date Amount ($) Transaction 4/1 322. 95 Beginning balance 4/10 19. 87 Purchase 4/14 50. 00 Payment 4/19 71. 21 Purchase If Hannah’s credit card company calculates finance charges using the daily balance method, what will her April finance charge be? a. $2. 71 b. $3. 20 c. $3. 30 d. $3. 61.
The finance charge of April month of Hannah's credit card which is calculated by daily balance method is $3.30.
What is finance charge?The finance charge is the amount of the money which borrowed, including the interest amount and other fees.
The following table shows Hannah’s transactions in the month of April.
Date Amount ($) Transaction
4/1 322.95 Beginning balance
4/10 19.87 Purchase
4/14 50.00 Payment
4/19 71. 21 Purchase
Average balance in the account,
[tex]A=(322.95\times10)+[(342.87)\times4]+(292.82\times5)+(364.03\times11)\\A=10069.41[/tex]
Hannah has a credit card with an APR of 11. 90% and a billing cycle of 30 days. The finance charges,
[tex]\rm FC=\dfrac{10069.41\times11.9}{365\times100}\\FC\approx3.30[/tex]
Hannah’s credit card company calculates finance charges using the daily balance method,
The finance charge of April month of Hannah's credit card which is calculated by daily balance method is $3.30.
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pls answer , please brainlist
Answer: Option 4 - 1440
Step-by-step explanation:
2 Square Sides : Take 12 times 12 and times by two for both sides.
12 x 12 = 144 144 x 2 = 288
4 rectangular sides : The multiplication of 12 times 24
12 x 24 = 288 288 x 4 = 1152
Added All Together : 288 + 1152 = 1440
What is the difference between 7/10 and 14/15
Answer:
11
Step-by-step explanation:
Which relationships have the same constant of proportionality between yyy and xxx as the equation y=\dfrac{5}{2}xy= 2 5 xy, equals, start fraction, 5, divided by, 2, end fraction, x? Choose 3 answers: Choose 3 answers: (Choice A) A 5y=2x5y=2x5, y, equals, 2, x (Choice B) B 8y=20x8y=20x8, y, equals, 20, x (Choice C) C (Choice D) D (Choice E) E xxx yyy 111 2\dfrac{1}{2}2 2 1 2, start fraction, 1, divided by, 2, end fraction 444 101010 777 17\dfrac{1}{2}17 2 1 17, start fraction, 1, divided by, 2, end fraction
Answer:
[tex]8y = 20x[/tex]
Step-by-step explanation:
Given
[tex]y=\dfrac{5}{2}x[/tex]
Required
Determine equivalent expressions
A. 5y = 2x
[tex]y=\dfrac{5}{2}x[/tex]
Multiply through by 5
[tex]5 * y=\dfrac{5}{2}x * 5[/tex]
[tex]5y=\dfrac{25}{2}x[/tex]
This is not equivalent
B. 8y = 20x
[tex]y=\dfrac{5}{2}x[/tex]
Multiply both sides by 8
[tex]8 *y=\dfrac{5}{2}x * 8[/tex]
[tex]8y=\dfrac{5 * 8}{2}x[/tex]
[tex]8y=\dfrac{40}{2}x[/tex]
[tex]8y = 20x[/tex]
The other options are not clear.
However, another possible relationship is when
[tex]y=\dfrac{5}{2}x[/tex]is cross multiplied
This gives:
[tex]2y = 5x[/tex]
Answer:
d= y =x
Step-by-step explanation
i clicked on all the awnser and got it write
Please help me out :)
Determine the intercepts of the line
Answer:
x-intercept: (15/7 , 0)
y-intercept: (0, 5/2)
*just plug in y=0 to find the X-intercept and x=0 for the y-intercept
If r= 9 units and x = 4 units, then what is the volume of the cylinder shown above?
Answer:
Volume of the cylinder is. 1017.36
Step-by-step explanation:
[tex]V=\pi r^2h[/tex] is the area of a cylinder.
Let's plug in our values.
-----
3.14 = pi
9 = radius
x = height
-----
V = (3.14)(9)^2(4)
V = (3.14)(81)(4)
V = (3.14)(324)
V = 1017.36
HELP PLEASE! 40 POINTS AND WILL MARK BRAINLIEST.
Describe how to find the 12th term from the sequence below.
f(1)=4
f(n)=f(n-1)+5
The first term, f(1) = 4, to find the second term,
which is f(2-1) = f(1) = 4, so second term, f(2) = 4+5
hence 9, to find the terd term,
which is f(3-1) = f(2) = 9, so terd term, f(3) = 9+5
hence 14, so common difference is 5.
12 term is 59.
3x^3 - 8y2 if x =2 and y =-3
Sallie Woo worked these hours last week: Monday, 10; Tuesday, 8 1/4; Wednesday, 9 1/2; Thursday, 6; Friday, 8; Saturday, 5. Sallie is paid $11.40 per hour for regular hours, time and a half for overtime during the week, and double time for weekend hours. If Sallie works on an 8-hour day basis, what was her pay for the week?
Answer:
Her pay for the week= $ 611.325
Step-by-step explanation:
Sallie is paid $ 11.40 per hour for regular hours.
The total regular hours worked during the week are
Monday + Tuesday + Wednesday + Thursday+ friday = 8 + 8+ 8+6+8= 38 hours
She works overtime during the week
Monday + Tuesday + Wednesday = 2+ 1/4+ 1 1/2= 2+ 1/4 + 3/2
= 8 +1+ 6/4=15/4 = 3 3/4 hours
Over the weekend she works five hours .
So the total pay would be
$ 11.40( 38 ) + $ 11.40( 1.5) ( 15/4) + $ 11.40 ( 2) ( 5)
= 433.2 + 64.125 + 114.0
= $ 611.325
What is 44.8 multipled by 44.8
Answer:
2007.04
Step-by-step explanation:
If Chad drove 168 miles in 2 hours, how many hours will it take Chad to drive 840 miles traveling at the same rate?
Answer:
10 hours
Step-by-step explanation:
First we need to find the rate Chad is driving. The rate is equal to distance/time, so we do 168/2, which is 84 mph. Then we have to find the time, which is distance/rate, so that would be 840/84, which is 10 hours.
Answer:
10 hours
Step-by-step explanation:
If Chad drove 168 miles in 2 hours than he drove 84 miles in one hour. If he drove 840 miles than you divide 840 by 84 and you get 10 hours. To check your work you can do 84*10= 840 miles 84=representing the miles per hour and 10=representing the amount of hours he drove.
PLEASE HELP!!!!!!!!
also, show all work
Thank you:)
Problem 1
Answer: 104 cubic inches----------------------
Explanation:
The prisms are similar so they have the same shape, but different sizes.
The linear scale factor from small to large is:
large/small = 10/4 = 2.5
Meaning that we multiply each dimension of the smaller prism by 2.5 to get the corresponding side length of the larger prism
4*2.5 = 10
This linear scale factor is then cubed to get the volume scale factor
(2.5)^3 = 15.625
Which tells us:
larger volume = 15.625*(smaller volume)
smaller volume = (larger volume)/15.625
smaller volume = (1625)/15.625
smaller volume = 104 cubic inches
========================================================
Problem 2
Answer: 650 square inches----------------------
Explanation:
We will go back to the linear scale factor of 2.5
This time, we square it to get (2.5)^2 = 6.25
This is the surface area scale factor.
larger surface area = 6.25*(smaller surface area)
larger surface area = 6.25*(104)
larger surface area = 650 square inches
ASAP!!! FOR BRAINlIEST!!
Answer:
No
Step-by-step explanation:
the value x is used twice, meaning when graphed it is going to meet to points at the same time, which makes it not a functions.
- i hope this makes sense
Use a calculator to find decimal estimates to two decimal places (hundredths) for the following irrational number: √19
Answer:
The answer is 4.35, rounded two decimals to hundredths place.
some text here to make the answer slightly longer for some good reasons. yep.
Is it important to know the steps in solving your own problems? why or why not
Answer:
yes
Step-by-step explanation:
because when you include the steps, you can find out where you made a mistake (in case) and correct it easily.
"The sum of a number and one-half of the number is 45. Find the
number." if anyone could tell me the answer and how to get it, id appreciate it!!!
Answer:
the number is 30
Step-by-step explanation:
the formula i used goes like this
x+2x=45
3x=45
x=15
2x=30
So x is equal to the half number, therefore 2 times x is the whole number. Then you just do algebra to figure it out from there! hope this helps.