Answer:
If a car can go 200 miles in 6 hours at a constant rate, in 7 hours it will have gone 233.33 (0.33 repeating) miles.
Step-by-step explanation:
If a car can go 200 miles in 6 hours, then we know it can go about 33.33 miles per hour (found by dividing 200 by 6).
If the car is going at this constant rate we can then multiply 33.33 by 7, which would give us 233.33.
The car can go 233.33 miles in 7 hours
What is Ratio and proportion ?A comparison of two entities by dividing them is called Proportion and when two ratios are equated to one another , they are said to be in proportion.
It is given in the question that
a car can go 200 miles in 6 hours
Distance covered in 7 hours
In the given question the ratio of Distance covered and time is
200/6 = 100/3 = 100:3
Let the distance covered in 7 hours is x
therefore the ratio will be x : 7
These two ratios will be in proportion
100:3 = x: 7
100/3 = x / 7
x = 100 * 7 / 3
x = 700 / 3
x = 233.33 miles
Therefore The car can go 233.33 miles in 7 hours .
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Jana finished 1/4 of her homework at school and 2/3 of it before dinner how much of her homework has she finished so far
Answer:
11/12
Step-by-step explanation:
1/4+2/3
1/4×3/3+2/3×4/4
3/12+8/12
Scott went snowboarding down a mountain. The trail was 2 miles long and took him 5 minutes to complete. If Tom snowboards three times as fast, how long would it take him to get down the mountain?
Answer:
1 minute and 40 seconds or 1 2/3 minute
Step-by-step explanation:
If it took Scott 2 miles for 5 minutes, than it took him 2.5 minutes to do 1 mile. For 3 times as fast, we need to divide by 3. 2.5/3= 5/2*1/3=5/6. It is 2 miles, so 5/6*2=10/6=5/3=1 2/3 minute. 2/3 minute=40 seconds. So, the answer is 1 minute and 40 seconds or 1 2/3 minute.
Answer:
1 minute and 40 seconds or 1 2/3 minute(s)
Step-by-step explanation:
a large rectangular swimming pool is 1,000 feet long 100 feet wide and 10 feet deep how much water does the pool hold?
ANSWER
The swimming pool can hold 1,000,000 cubic feet of water.
EXPLANATION
The capacity of water the pool holds is the volume of water in the swimming pool.
The swimming pool is rectangular, therefore its volume can be calculated using the formula,
[tex]V = l \times w \times h[/tex]
where l=1000ft is the length, w=100ft is the width and h=10ft is the height of the pool.
We substitute all these values into the formula to get:
[tex]V = 1000 \times 100 \times 10 = 1000000 {ft}^{3} [/tex]
The swimming pool can hold 1,000,000 cubic feet of water.
The amount of water the pool can hold is 1,000,000 ft³.
What is the amount of water the pool can hold?In order to determine the amount of water the pool can hold, we have to determine the volume of the rectangular swimming pool. Since the swimming pool has the shape of a cuboid, the formula for the volume of a cuboid would be used.
Volume = length x width x height
1000 x 100 x 10 = 1,000,000 ft³
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what is the distance in units between (-1, -5) and (-9,-5) on a coordinate plane
Answer:
8 units
Step-by-step explanation:
Calculate the distance (d) using the distance formula
d = √ (x₂ - x₁ )² + (y₂ - y₁ )²
with (x₁, y₁ ) = (- 1, - 5) and (x₂, y₂ ) = (- 9, - 5)
d = [tex]\sqrt{(-9+1)^2+(-5+5)^2}[/tex]
= [tex]\sqrt{(-8)^2+0^2}[/tex]
= [tex]\sqrt{64}[/tex]
= 8 units
A shipping container is known to hold exactly 1000 ft3. If the container is measured, which side dimensions would produce the most accurate measurement of the container?
Answer:
9.9 x 10.1 x 10.0
Step-by-step explanation:
9.9 x 10.1 x 10.0 = 999.9 ft3
This the closest to the true known value.
Other answers mat be more precise, but not as accurate.
Accuracy is how close a measured value is to the actual or true value.
Cheers
Answer:
A)
Step-by-step explanation:
Here are the choices:
A) 9.9 x 10.1 x 10.0
B) 9.91 x 10.11 x 10.00
C) 9.911 x 10.112 x 10.002
D) 9.9113 x 10.1125 x 10.0028
Here are the volumes produced by each choice of measures.
A) 999.9
B) 1001.9
C) 1002.4
D) 1002.56
Answer: A) since the volume os colsest to the real volume.
Four resistors are connected in series such that their total resistance is 50ohm . If the resistance of resistors is 5 ohm , 10ohm and 15 ohm respectively .find tue resistance of the fourth resistor
[tex]\boxed{R_{4}=20\Omega}[/tex]
Step-by-step explanation:If resistors are in series, so the current [tex]I[/tex] is the same in all of them. In this problem we have four resistors. So, we can get a relationship between the Equivalent resistance of series combination and the four resistors as follows:
[tex]R_{eq}=R_{1}+R_{2}+R_{3}+R_{4}[/tex]
[tex]R_{eq}[/tex] is the total resistance [tex]50\Omega[/tex]. Moreover:
[tex]R_{1}=5\Omega \\ R_{2}=10\Omega \\ R_{3}=15\Omega[/tex]
Therefore:
[tex]50=5+10+15+R_{4} \\ \\ R_{4}=50-(5+10+15) \\ \\ R_{4}=50-30 \\ \\ \boxed{R_{4}=20\Omega}[/tex]
Order numbers to least to greatest 0.8,8%,18%,1/8,8/18
Answer 8%, 1/8, 18%, 8/18, 0.8
Step-by-step explanation:
0.8 = 80%
1/8 = 12.5%
8/18 = 44.4%
8% < 12.5% < 18% < 44.4% < 80%
which is the correct simplified form of the expression x^1/2y^-1/3/x^1/4y^1/2
Answer : x^1/2 y -1/3/x^/4 cdot y^1/2= y^1/3
Step-by-step explanation: Hope this helps !!!
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Three 3/10 converted into a decimal
Answer:
3.3
Step-by-step explanation:
3 3/10 = 3 + 3/10 = 3 + 0.3 = 3.3
Order the following measures from least to greatest: 0.5 m, 30 in, 1.25 ft, 17cm
Answer:
30 in, 0.5 m, 1.25 ft, 17 cm
30in, 0.5m, 1.25, 17cm
a shopper gives a cashier $60 to pay for a $49 how much does the cashier of the shopper
Answer:
$11.00
Explanation:
$60 given - $49 order = $11 change
Answer:
It's 11 because 60-49 equals 11.
Step-by-step explanation:
find the length of the missing side. if necessary, round to the nearest tenth.
A. 44
B. 22
C. 15.6
D. 484
the answer to this question would be c- 15.6
sweet t has 1,258 staples that he will use to create art canvases. Each canvas requires 24 staples. How many canvases can he make AND how many staples will he have remaining
Answer:
He can make 52 canvases and will have 10 remaining staples
Step-by-step explanation:
1258/24=52 10/24
Answer:
52 canvases can be prepared and 10 staples will be remaining
Step-by-step explanation:
Sweet t has number of staples to create art canvases = 1258
Each canvas requires number of staples = 24
Let n canvases can be prepared by these staples.
Number of staples used in n canvases = 24n
The expression representing this process will be
24n = 1258
n = [tex]\frac{1258}{24}[/tex]
= 52.42 canvases
Staples used to prepare 52 canvases = 52 × 24
= 1248
Remaining staples = 1258 - 1248
= 10 staples
Therefore, 52 canvases can be prepared and 10 staples will be remaining.
Which set of coordinates satisfies the system of equations y = x − 3 and y = -2x + 1?
A. a
B. b
C. c
D. d
Point c.
You can graph the two points in a calculator to find out the answer OR you can identify the lines using the y-intercept aka b in the y=mx+b format.
Y=x - 3 has a y-intercept of -3, so look for the line where it goes through -3 on the y axis. (do the same for the other except when the y-intercept is 1)
From this, you can identify the lines and just find where they intersect.
Answer:
CCCCCCCCCCCCCC
Step-by-step explanation:
42x^3+35×^2-36x-30 factor
Answer:
(6x + 5)(7x² - 6)
Step-by-step explanation:
Factor the first/second and third/fourth term
42x³ + 35x² - 36x - 30
= 7x²(6x + 5) - 6(6x + 5) ← factor out (6x + 5) from each term
= (6x + 5)(7x² - 6)
Answer:
(6x+5)(7x2−6)
Step-by-step explanation:
Factor 42x3+35x2−36x−30
42x3+35x2−36x−30
=(6x+5)(7x2−6)
If ƒ={(5, 1),(6, 2),(7, 3),(8, 1),(9, 7)}, then the range of ƒ is {(1, 5),(2, 6),(3, 7),(1, 8),(7, 9)} {1, 2, 3, 7} {5, 6, 7, 8, 9}
Answer:
{1,2,3,7}
Step-by-step explanation:
The range of a relation is the set of y-values of the ordered pairs.
The given relation is:
ƒ={(5, 1),(6, 2),(7, 3),(8, 1),(9, 7)},
The set of y-values of the given ordered pairs are;
{1,2,3,7}
Therefore the range of y is {1,2,3,7}
Answer:
{[tex]1, 2, 3, 7[/tex]}
Step-by-step explanation:
Imagine fucntions as little machines that turn one number into another. The numbers that enter are called domain and the numbers that go out are called range. In this excercise we are given the couples of numbers that go in and out of the machine. Like this:
[tex](NumberIn,NumberOut)[/tex]
So the range of this function will be all the number going out of the function
(NumberOut) and this are:
{[tex]1, 2, 3, 7[/tex]}
Find the difference between (15,-17) and (-20,-5)
Answer:
37 units
Step-by-step explanation:
The horizontal distance between these two points is 35 and the vertical is 12.
Treat these distances as the lengths of the legs of a right triangle whose hypotenuse we want to determine:
d^2 = 35^2 + 12^2 = 1369, so d = the distance between these two points = d = sqrt(1369) = 37 units
The difference between the points (15,-17) and (-20,-5) is calculated by subtracting the coordinates, resulting in a difference of (35, -12).
To find the difference between the two points (15,-17) and (-20,-5), we need to subtract the coordinates of the second point from the coordinates of the first point.
For the x-coordinates: 15 - (-20) = 15 + 20 = 35
For the y-coordinates: -17 - (-5) = -17 + 5 = -12
Therefore, the difference between the two points is (35, -12).
What is M
A.
42°
B.
50°
C.
58°
D.
100°
Answer:
C. 58°
Step-by-step explanation:
m∠ACB=(180-138)°
m∠B + m∠A +∠mACB =180
80+ m∠A + (180 -138) =180
80 + m∠A - 138 = 0
m∠A = 58
Answer:
C
Step-by-step explanation:
The external angle of a triangle is equal to the sum of the 2 opposite interior angles.
∠ACD is an exterior angle of the triangle and
∠A and ∠B are the 2 opposite interior angles, hence
∠A + ∠B = 138, that is
∠A + 80 = 138 ( subtract 80 from both sides )
∠A = 58° → C
Choose all of the rectangular prisms that have a volume of 24
Answer:
pictures 1, 2, 4, and 6
Step-by-step explanation:
A store had 800 T-shirts in stock for a weekend sale.T-shirts are sold in packs of 4 each.During the sale,20 packs of T-shirts were sold on Saturday, and 70 more packs were sold on Sunday.
During the weekend sale, a total of 360 T-shirts were sold from the initial stock of 800 T-shirts in packs of 4. This resulted in 440 T-shirts leftover in stock after the sale.
Explanation:In the context of the store scenario, we have an initial stock of 800 T-shirts, which are sold in packs of 4 each. On Saturday, 20 packs are sold, resulting in a reduction of 20 packs times 4 shirts per pack, which equals 80 shirts. On Sunday, 70 more packs are sold, which corresponds to 70 packs times 4 shirts per pack, totaling 280 shirts sold on Sunday. Adding up the shirts sold on both days, we get 80 + 280, which equals 360 shirts sold in total during the weekend. To find the remaining stock, we subtract the total shirts sold from the initial stock: 800 shirts - 360 shirts = 440 shirts remaining after the sale.
What is the range of the following relation?
{(5,0), (6, -1), (1, 4), (0,5), (2,3)}
ANSWER
The range is
{-1,0,1,3,4,5}
EXPLANATION
The relation is given to us as an ordered pair.
The range is the set of all the y-values of the relation.
We list the set of all the values in ascending order without any repetition.
We then obtain the range as:
{-1,0,1,3,4,5}
Complete the following statement ( round your answer to the nearest hundredth)
f(7)=
Okay so in this question it says to solve f(7). This means to plug in the 7 every where you see an x, so that it looks like this: [tex]\frac{3}{7+2} -\sqrt{7-3}[/tex]Then you'll solve it like a normal equation.
Hope this helped! Let me know if there is anything I need to clarify or explain more in depth!
Answer:
- 1.67
Step-by-step explanation:
To evaluate f(7) substitute x = 7 into the expression
f(7) = [tex]\frac{3}{7+2}[/tex] - [tex]\sqrt{7-3}[/tex]
= [tex]\frac{3}{9}[/tex] - [tex]\sqrt{4}[/tex]
= [tex]\frac{1}{3}[/tex] - 2
= [tex]\frac{1}{3}[/tex] - [tex]\frac{6}{3}[/tex]
= - [tex]\frac{5}{3}[/tex] ≈ - 1.67
(a-b)^2/(1/a-1/b) simplify
The solution of the expression (a-b)²/{(1/a)-(1/b)} is ab² - a²b.
What is factorization?Factorization in mathematics is the process of dividing a large number into smaller ones that, when multiplied together, give you the original number. Factorization is the process of dividing a number into its components or divisors.
Given:
An expression,
(a-b)²/{(1/a)-(1/b)}.
Simplifying,
(a-b)²/{(1/a)-(1/b)},
= (a-b)²/{(b-a)/ab},
= -(a-b)² (ab)/(a-b)
= -(a-b)(ab)
= ab² - a²b.
Therefore, ab² - a²b is the solution.
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Final answer:
The expression (a-b)²/(1/a-1/b) simplifies by first finding a common denominator, then multiplying to remove the fraction, resulting in the simplified form -ab(a-b).
Explanation:
To simplify the expression (a-b)²/(1/a-1/b), we can start by finding a common denominator for the terms in the denominator 1/a and 1/b. The common denominator is a × b, so we rewrite the expression as:
((a-b)²) / ((b - a) / (ab))
Now, we can simplify by multiplying both the numerator and the denominator by ab to eliminate the fraction in the denominator:
(a-b)² × (ab) / (b - a)
Note that (a - b) is equal to -(b - a), so:
(a-b)² × (ab) / -(a - b)
Because (a - b)² is (a - b) × (a - b), one (a - b) in the numerator cancels with the (a - b) in the denominator, leaving us with:
-(a - b) × (ab)
Which simplifies to:
-ab(a - b)
To investigate a community’s reading habits, a magazine invites readers to complete and mail in a survey. What is the sampling method?
A. Convenience Sampling
B. Systematic Sampling
C. Self-Selected Sampling
D. Random Sampling
Does the sampling method have any bias?
A. Yes, because the survey is leading. It suggests that a certain answer is wanted.
B. Yes, because the people who respond to the survey may underrepresent the number of readers in the community.
C. No, the sampling method has no bias because part of the population equally represents the entire population.
D. Yes, because the people who respond to the survey may overrepresent the number of readers in the community.
The sampling method used in this case is Self-Selected Sampling (C) and it has bias because those who respond to the survey may overrepresent the number of readers in the community.
Explanation:The sampling method used in this case is Self-Selected Sampling (C). The magazine invites readers to complete and mail in a survey, therefore the readers themselves choose whether or not to participate. There is no random selection involved in this sampling method.
The sampling method used in this case does have bias. (D) Yes, because the people who respond to the survey may overrepresent the number of readers in the community.
This is because only those who choose to respond will be included in the sample, and those who are more interested in the magazine or have strong opinions about reading may be more likely to respond.
Final answer:
The sampling method used in this situation is Convenience Sampling, and it does have bias because it may underrepresent the number of readers in the community.
Explanation:
The sampling method used in this situation is Convenience Sampling. This is because the magazine invites readers to complete and mail in a survey based on their convenience, rather than using a random or systematic method to select the sample.
The sampling method used in this situation does have bias. The correct answer is B. Yes, because the people who respond to the survey may underrepresent the number of readers in the community. This is because the sample is based on self-selection, meaning that only those who choose to respond to the survey are included. This can result in a biased sample that may not accurately represent the entire community's reading habits.
PLEASE WALK ME THROUGH THIS!!!??
The red carnations sold for 50 cents a bunch and the white carnations sold for 40 cents a bunch. Mike bought 27 bunches for $12.30. How many red carnations did he get?
Answer:
Im pretty sure he got 24
Step-by-step explanation:
Because if you divide 12.30 by .50 you get 24.6 and the 6 could mean sales tax and other stuff
what is the midpoint between (-8,5) and (2,-2)
Answer:
the midpoint between (8,5) and (2,-2) is P(5,1.5)
[tex]\bf ~~~~~~~~~~~~\textit{middle point of 2 points } \\\\ (\stackrel{x_1}{-8}~,~\stackrel{y_1}{5})\qquad (\stackrel{x_2}{2}~,~\stackrel{y_2}{-2}) \qquad \left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right) \\\\\\ \left(\cfrac{2-8}{2}~~,~~\cfrac{-2+5}{2} \right)\implies \left( \cfrac{-6}{2}~,~\cfrac{3}{2} \right)\implies \left(-3~~,~~1\frac{1}{2} \right)[/tex]
Line AB is parallel to Line CD. Line AC and Line BD are perpendicular to Line AB and Line CD. What is the relationship between AC and BD?
Line AC and Line BD are perpendicular to each other.
Explanation:In this scenario, we have Line AB parallel to Line CD, and both Line AC and Line BD are perpendicular to Line AB and Line CD. Since two perpendicular lines intersect at a 90-degree angle, we can say that Line AC and Line BD are also perpendicular to each other. This means that Line AC forms a 90-degree angle with Line BD.
8.What is the lateral area and the surface area of the cone shown below? Round the answers to the nearest tenth.the figure is not drawn to scale.
if you have the answers for the whole test I'll take them too please
Answer:
Part 1) The lateral area is [tex]LA=791.7\ ft^{2}[/tex]
Part 2) The surface area is [tex]SA=1,244.1\ ft^{2}[/tex]
[tex]LA=791.7\ ft^{2}[/tex], [tex]SA=1,244.1\ ft^{2}[/tex]
Step-by-step explanation:
step 1
Find the lateral area of the cone
we know that
The lateral area of the cone is equal to
[tex]LA=\pi rl[/tex]
we have
[tex]r=12\ ft[/tex]
[tex]l=21\ ft[/tex]
substitute
[tex]LA=(3.1416)(12)(21)=791.7\ ft^{2}[/tex]
step 2
Find the surface area of the cone
we know that
The surface area of the cone is equal to
[tex]SA=\pi r^{2}+LA[/tex]
we have
[tex]r=12\ ft[/tex]
[tex]LA=791.7\ ft^{2}[/tex]
substitute
[tex]SA=(3.1416)(12)^{2}+791.7=1,244.1\ ft^{2}[/tex]
Two quadratic functions are shown.
Function 1:
f(x) = 2x2 - 8x + 1
Function 2:
x g(x)
-2 2
-1 -3
0 2
1 17
Which function has the least minimum value and what are its coordinates? (5 points)
Function 1 has the least minimum value and its coordinates are (0, 1).
Function 1 has the least minimum value and its coordinates are (2, -7).
Function 2 has the least minimum value and its coordinates are (0, 2).
Function 2 has the least minimum value and its coordinates are (-1, -3).
Answer:
Function 1 has the least minimum value and its coordinates are (2, -7).
Step-by-step explanation:
Two quadratic functions are shown.
Function 1:
[tex]f(x) = 2x^2 - 8x + 1[/tex]
Function 2:
x g(x)
-2 2
-1 -3
0 2
1 17
LEts find the vertex to get the minimum value
to get the minimum value for function 1 we use formula [tex]x=\frac{-b}{2a}[/tex]
[tex]f(x) = 2x^2 - 8x + 1[/tex], a=2, b=-8
[tex]x=\frac{-b}{2a}=\frac{8}{2(2)}=2[/tex]
when x=2, the value of [tex]f(2) = 2(2)^2 - 8(2) + 1=-7[/tex]
minimum point of function 1 is (2,-7)
For function 2, we find the minimum point using the table
minimum point of function 2 is (-1,-3)
Function 1 has the least minimum -7.
Function 1 has the least minimum value and its coordinates are (2, -7).
The true statement is (b) function 1 has the least minimum value and its coordinates are (2, -7).
The first quadratic function is given as:
[tex]f(x)= 2x^2 - 8x +1[/tex]Factor out 2 in the above equation
[tex]f(x)= 2(x^2 - 4x) +1[/tex]
Rewrite the expression in the bracket, as follows:
[tex]f(x)= 2(x^2 - 4x + 4 - 4) +1[/tex]
This gives
[tex]f(x)= 2(x^2 - 4x + 4 ) -8+1[/tex]
[tex]f(x)= 2(x^2 - 4x + 4 ) -7[/tex]
Express x^2 - 4x + 4 as a perfect square
[tex]f(x)= 2(x - 2)^2 -7[/tex]
A quadratic function is represented as:
[tex]f(x)= a(x - h)^2 +k[/tex]
Where
[tex]Vertex = (h,k)[/tex]
By comparison, we have:
[tex]Vertex = (2,-7)[/tex] --- this represents the minimum of function 1From the graph, the minimum of function 2 is:
[tex]Vertex = (-1,-3)[/tex](2,-7) is lesser than (-1,-3).
Hence, the function 1 has the least minimum value at a coordinate of (2,-7)
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Solve for x.
A.
x = 4
B.
x = 3
C.
x = 12
D.
x = 1v
Answer:
the answer is a
Step-by-step explanation: