Answer:
8 - 12 + 6x
-4 + 6x
or
6x - 4
Step-by-step explanation:
The area of the rectangle is 4000 square meters. What is the perimeter of the track? Use 3.14 for pi.
The question does not provide sufficient information to work out the perimeter of the track based on the given area. More information or clarification is necessary.
Explanation:The subject of the question is unclear. Specifically, the mention of a 'track' and its 'perimeter' suggest a geometry-related question but there isn't enough information. Normally, if the track was a rectangle and you know the area as 4000 square meters, you'd need at least one side length to determine the other side and compute the perimeter. The mention of pi, however, indicates a possible circular track that wouldn't fit the context of a rectangular area. Please provide more information or clarify the question so a more accurate guide can be given.
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Which of these BEST explains the construction of a network of railroads linking Europe together during the nineteenth
century?
A)
Rail service allowed armies to move quickly across Europe.
Rail service allowed people to visit their families across Europe.
Rail service provided many people across Europe with job
opportunities.
Rail service provided more efficient means to transport goods across
Europe.
D)
pretty sure its D
pretty sure its d
The primary reason for the construction of a network of railroads in Europe during the 19th century was to provide a more efficient means to transport goods, promoting trade and boosting economical growth, although it also facilitated the movement of armies and people.
Explanation:The best explanation for the construction of a network of railroads linking Europe together during the nineteenth century is that the Rail service provided more efficient means to transport goods across Europe. This period, known as the Railway Age, saw exponential growth in the expansion of railroads because they created an efficient and faster way for countries to trade goods, thus boosting their economies.
Not only did the burgeoning rail network provide a means for rapid movement of goods, but it also facilitated the movement of people, creating job opportunities and promoting cultural exchange.
While it is true that rail service allowed armies to move quickly and people to visit families across the continent, the primary impetus for the expansion of the rail network was economic – facilitating trade and industry.
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Which of these geometric figures can intersect to form a cross section? Check all that apply.
a line and a prism
a line and a rectangle
a point and a prism
a prism and a horizontal plane
a vertical plane and a pyramid
Answer:
The answer on edu is a prism and A horizontal plane,A vertical plane and a pyramid.Step-by-step explanation:the Letter answer D,E
We will only have cross-sections for the following pairs:
D: a prism and a horizontal planeE: a vertical plane and a pyramidWhat is a cross-section?
We can define a cross-section as a "cut" of a figure. For example, if you take a sphere and cut it, you will see that the shape of the cutted part is a circle.
So the cross-section for a sphere is a circle.
Now, notice that the figures are 3d and the cross-sections are 2d, so, to make a cross-section, we need a figure and a plane.
With that in mind, the two cases that can form cross-sections are:
D: a prism and a horizontal planeE: a vertical plane and a pyramidWhere we have the intersection between figures and planes.
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one cup hold 8 ounces of liquid if a cup is 2/3 full how many ounces are in the cup?
Answer:
5.33 ounces repeating
Step-by-step explanation:
If a cup is 2/3 full 5.33 ounces are in the cup.
What is a fraction?Any number of equal parts is represented by a fraction, which also represents a portion of a whole. A fraction, such as one-half, eight-fifths, or three-quarters, indicates how many components of a particular size there are when stated in ordinary English.
Given
1 cup holds 8 ounces
2/3 holds [tex]2/3 * 8[/tex] ounces = 5.33 ounces
Therefore, If a cup is 2/3 full 5.33 ounces are in the cup
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For the following right triangle, find the side length x
X=10
Use Pythagorean theorem
A squared + b squared = x squared
X is the hypotenuse so use x squared = 8 squared + 6 squared
So x squared = 64+36
square root x = 100
Then square root 100 to get
X = 10
<3
The length of the hypotenuse in the right triangle with side lengths of 6 and 8 units is 10 units.
Let's consider a right triangle with side lengths of 6 units and 8 units. We'll label these sides as 'a' and 'b', respectively, and we need to find the length of the hypotenuse, which we'll denote as 'c'.
According to the Pythagorean Theorem, the relationship between the sides of a right triangle can be expressed as:
c² = a² + b²
Now, we can substitute the given side lengths into the formula:
c² = 6² + 8²
c² = 36 + 64
c² = 100
To find the value of 'c', we take the square root of both sides of the equation:
c = √100
c = 10
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What is a part of a population used to describe the whole group?
A) Population
B) Sample
C) Statistics
D) Inference
E) Parameter
Answer:
In basic terms, a population is the total number of individuals, animals, items, observation, data, etc. So the sample, in other words, is a portion, part, or fraction of the whole group, and acts as a subset of the population. Samples are used in a variety of settings where research is conducted.
What is 6x^2 – 3х + 12 =
Answer:
The answer is C because of distributive property. To check just multiply the number outside of the parenthesis by each number or variable inside the parenthesis.
Answer:
C. [tex]3(2x^2 - x + 4)[/tex]
Step-by-step explanation:
You must find the GCF (Greatest Common Factor) that can be applied to all the terms.
In this case, you can only divide everything by 3:
[tex]6x^2-3x+12\\3(2x^2-x+4)[/tex]
Lola says these two expressions have the same value.
Expression A
Expression B
Left-bracket (StartFraction a Over b EndFraction) Superscript negative 4 Baseline Right-bracket Superscript 0
Left-bracket (StartFraction a Over b EndFraction) Superscript 0 Baseline Right-bracket Superscript negative 4
Which explains whether Lola is correct?
Lola is correct because each expression has a value of 0.
Lola is correct because each expression has a value of 1.
Lola is not correct because the value of expression A is 1 and the value of expression B is (StartFraction b Over a EndFraction) Superscript 4.
Lola is not correct because the value of expression A is (StartFraction b Over a EndFraction) Superscript 4 and the value of expression B is 1.
Lola is correct because each expression has a value of 1.
What are expressions that have the same value?Expressions are stated to be equivalent if they have an identical fee regardless of the value of the variable(s) in them.
What are equivalent expressions?Equal expressions are expressions that work the same even though they look specific. If algebraic expressions are equal, then the 2 expressions have the equal-cost when we plug in the identical fee(s) for the variable(s).
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a circle with a radius of 5 cm sits inside a 11 cm x 11 cm rectangle, what is the area of the shaded region
Answer:
42.43 [tex]cm^{2}[/tex]
Step-by-step explanation:
Given:
A circle with a radius of 5 cm sits inside a 11 cm x 11 cm rectangle.
Question asked:
What is the area of the shaded region as shown in the figure ?
Solution:
First of all calculate area of circle and then area of rectangle:-
[tex]Area\ of\ cirle=\pi r^{2}[/tex]
[tex]= =\frac{22}{7} \times5\times5\\ \\ =\frac{550}{7}\\ \\=78.571[/tex]
As here length an width both are 11 cm, we can say that this is a square.
[tex]Area\ of\ square=(Side)^{2}[/tex]
= [tex]=11\times11=121\ cm^{2}[/tex]
Now, area of shaded region = Area of square - Area of circle
= 121 - 78.571 = 42.429 [tex]cm^{2}[/tex]
Therefore, the area of the shaded region will be 42.43 [tex]cm^{2}[/tex]
What is the measure of angle r in triangle PQR round to the nearest degree
Answer: 26° I’m not sure why but I mean lol
Answer:
26
Step-by-step explanation:
Please help fast!!!!!
Answer:
60 i think
Step-by-step explanation:
write the inverse function of F: f= { (3,0), (2,7), (-1,-2), (5,2) } and f^-1=
Answer:
f^-1 = {(0, -3), (7, 2), (-2, -1), (2, 5)}
What do you spend your money on? Do you think you’re making good investments?
Answer:yes
Step-by-step explanation:I spen my money on video games
The volume of a cone is 164 pi cubic feet. Its height is 12 feet. Ashlyn is finding the area of the base of the cone. Her work is shown below.
V = one-third B h. Step 1: 164 pi = one-third pi B (12). Step 2: 164 pi = 4 pi B. Step 3: StartFraction 164 pi Over 4 pi EndFraction = B. Step 4: 41 = B.
What is Ashlyn’s error?
In step 3, Ashlyn did not subtract 4 pi from 164 pi.
In step 2, Ashlyn did not find the correct value for multiplying One-third and 12.
In step 1, Ashlyn included a factor of Pi on the right side of the formula.
In step 1, Ashlyn did not substitute the correct value for the height in the formula.
Answer:
think is c
Step-by-step explanation:
Hence In step 1, Ashlyn included a factor of Pi on the right side of the formula
What is volume?Volume is capacity of object any object can hold.
How to solve?V = one-third B h.
Step 1: 164 pi = one-third pi B (12).
Step 2: 164 pi = 4 pi B.
Step 3: 164 pi /4= B.
Step 4: 41 = B.
But in these steps pi is included in RHS but it should be in LHS side
Hence In step 1, Ashlyn included a factor of Pi on the right side of the formula
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When calculating total gross pay, you should ___
A) use only your hourly wage
B)use your hourly wage and tips
C) use only your tips
D) use your hourly wage and tips minus any deductions
When determining the total gross pay, you should use your hourly wage and tips
What is total gross pay?The total gross pay is the totality of an individual's total earnings throughout a given period prior to the removal of any deductions such as tax and contribution.
The total gross pay can be calculated annually or daily.
Total gross pay = annual salary earned/ number of pay periodsTotal gross pay = (hours worked in a day × hourly rate) + overtime hour(including tips made)Therefore, we can conclude that when determining the total gross pay, you should use your hourly wage and tips
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A box contains 5 blue beads, 4 yellow beads and 3 purple beads.
Three beads are taken from the bag, at random, without replacement.
a) What is probability of picking, in order, a blue bead followed
by a yellow bead followed by a purple bead?
b) Work out the probability that all three beads will be the same colour.
c) What is the probability that the three beads will not be the same colou
Answer:
A: 1/22
B: 3/44
C: 41/44
D: 3/11
Step-by-step explanation:
Hope this help : )
The probability of drawing beads in a specific sequence is calculated by multiplying the individual probabilities. For all the beads to be the same colour, calculate for each colour then add the probabilities. The probability of not drawing the same colour is 1 minus the probability of all beads being the same colour.
Explanation:The question concerns the concept of probability in mathematics.
a) The probability of picking a blue bead, then a yellow bead, then a purple bead is calculated by multiplying the individual probabilities together. There are 5 blue beads out of 12 total (5/12), then 4 yellow beads out of 11 remaining (4/11), then finally 3 purple beads out of 10 remaining (3/10). This results in a probability of (5/12) * (4/11) * (3/10) = 60/1320 or 0.0455.
b) For all three beads to be the same colour there are three possibilities: all blue, all yellow, or all purple. Calculate each of these probabilities, then add them together. For all blue it's (5/12)*(4/11)*(3/10), for all yellow it's (4/12)*(3/11)*(2/10), for all purple it's (3/12)*(2/11)*(1/10). This results in a total probability of 0.01515.
c) The probability that all three beads are not the same colour is simply 1 - the probability that they are the same colour = 1 - 0.01515 = 0.98485.
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Find the half life of a substance which decays according to the function A(t)=600e^-0.05t, where t is time in days. Round to the nearest day.
Answer:
14 days
Step-by-step explanation:
The half life of a substance is the time required until the object has only half of the inicial mass.
So, to find the inicial mass of the object, we use t = 0 in the equation A(t):
A(0) = 600*e^0 = 600
Half of this mass is 300, so we can use A(t) = 300 and then find the time:
300 = 600e^-0.05t
e^-0.05t = 0.5
ln(e^-0.05t) = ln(0.5)
-0.05t = -0.6931
t = 13.862 days
Rounding to nearest day, we have that t = 14 days
The calculated half-life is approximately 14 days.
To find the half-life of the substance decaying according to the function A(t) = 600[tex]e^{-0.05t}[/tex], we start by utilizing the definition of half-life. The half-life (t1/2) is the time required for the amount of the substance to reduce to half its initial quantity.
Given:
Initial amount A0 = 600 unitsDecay function: A(t) = 600[tex]e^{-0.05t}[/tex]1. At half-life, A(t1/2) = A0 / 2, which means:
600 / 2 = 600[tex]e^{-0.05(t1/2)}[/tex]
2. Simplifying this equation:
300 = 600[tex]e^{-0.05(t1/2)}[/tex]
0.5 = [tex]e^{-0.05(t1/2)}[/tex]
3. Taking the natural logarithm on both sides gives:
ln(0.5) = -0.05t1/2
ln(0.5) ≈ -0.693
So,
-0.693 = -0.05t1/2
t1/2 = 0.693 / 0.05 ≈ 13.86 days
Rounding to the nearest day, the half-life is approximately 14 days.
Find the solutions for 4x2 + 3x – 7 = 0 using a table. If approximating,
give the answer to the nearest tenth.
Answer:
x = 1 or x = -7/4
Step-by-step explanation:
4x2 + 3x – 7 = 0
x = 1 or x = -7/4
please answer this question
dianne runs around a circular track that has a radius of 55 feet. after running three quarters of the distance around the track, how far has she run?
Answer:
She has run 259.18m
Step-by-step explanation:
Since Dianne is running around the circular track, she is running around the perimeter of the circle.
Now, we know that the perimeter of a circle is given by;P = 2πr
Thus the perimeter of the track = total distance that the man travels = 2 x π x 55 = 345.575 meters
Now,since she has run 3/4 of the distance, thus, she has run;
(3/4) x 345.575 = 259.18m
Answer:
She has run 259.18m
Step-by-step explanation:
Since Dianne is running around the circular track, she is running around the perimeter of the circle.
Now, we know that the perimeter of a circle is given by; P = 2πr
Thus the perimeter of the track = total distance that the man travels = 2 x π x 55 = 345.575 meters
Now, since she has run 3/4 of the distance, thus, she has run;
(3/4) x 345.575 = 259.18m
WILL BRAINLIEST IF ANSWER IS RIGHT!!!!!!!!!!!!!!!!!!!!!! PLEASE HELP!!!!!! 50-100 POINTS!!!!!!!!
Two trains, Train A and Train B, weigh a total of 312 tons. Train A is heavier than Train B. The difference of their weights is 170. What is the weight of Train A? What is the weight of Train B?
Answer:
241 tons
Step-by-step explanation:
312-170=142
142÷2=71
170+71=241
241+71=312
train B weighs 241 tons
Answer:
Step-by-step explanation:
i believe train A weighs 137 tons and train B weighs 60 tons. sorry took me a while plese dont report
Ginny has a package of 80 cards. There are 40 yellow cards
and 40 red cards.
If she randomly picks 4 cards, how many cards should she
expect to be yellow?
Answer:
She should pick at least 2 cards because it is a 50 50 chance.
Step-by-step explanation:
It is very obvious unless it is rigged
Find the missing side length, and enter your answer in the box below. If necessary, round your answer to 2 decimal places.
Answer:
15
Step-by-step explanation:
9^2+12^2=c^2 use pythagorean thereom
225=c^2 use radical to solve
c=15
Answer:
c = 15
Step-by-step explanation:
Using Pythagoras' identity on the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
c² = 9² + 12² = 81 + 144 = 225 ( take the square root of both sides )
c = [tex]\sqrt{225}[/tex] = 15
a person selects 3 cards from an ordinary deck and replaces each card after it is drawn. Find out the probability that the person will get at least one heart
Answer:
P(at least one Heart)= 37/64
Step-by-step explanation:
Number of cards in the Deck=52
Number of Hearts=13
Number of Non-Hearts Card=52-13=39
Since we require the probability that the person will get at least one heart, we can first find the probability that the person will not pick a heart out of the three cards and find its complement.
P(Picking three Non Heart Cards)=39/52 X 39/52 X 39/52 =27/64
Therefore:
P(at least one Heart)=1-27/64=37/64
To find the probability of getting at least one heart when selecting 3 cards with replacement from an ordinary deck, subtract the probability of not getting any hearts from 1.
Explanation:To calculate the probability that the person will get at least one heart, we need to find the probability of getting no hearts and subtract it from 1. There are 52 cards in a deck and 13 of them are hearts. So, the probability of not getting a heart on the first draw is 39/52, on the second draw is also 39/52, and on the third draw is again 39/52. Multiply these probabilities together to get the probability of not getting a heart in any of the three draws. Finally, subtract this probability from 1 to find the probability of at least one heart.
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What is the value of StartFraction 1 Over 6 Superscript 0 EndFraction? One-sixth 0 1 undefined
Answer:
1
Step-by-step explanation:
just took the test :)
Answer:
1
Step-by-step explanation:
West middle school has classes of many different sizes during first period. The number of students in each class is shown.
9,23,18,14,20,26,14,18,18,12,8,13,21,22,28,10,7,19,24,20
a.Hank made a histogram using intervals of 6-10,11-15 and so on. how many bars did his histogram have? What was the height of the highest bar?
b.lisa made a histogram using intervals of 0-9,10-19, and so on. How many bars did her histogram have ? What was the height of the highest bar?
c besides a histogram, what are some other ways you could display these data?
Plz help me right away
Hank's histogram using intervals of 6-10, 11-15, etc., resulted in 5 bars with the tallest bar at the 16-20 interval having a height of 5. Lisa's histogram with intervals of 0-9, 10-19, etc., also had 5 bars, with the tallest bar at the 10-19 interval having a height of 7. Other ways of displaying the data include bar graphs, frequency tables, pie charts, and box-and-whisker plots.
Explanation:To answer the student's question regarding histograms and class sizes at West middle school:
Janice bought 4 shirts that are red green white and yellow and 3 pairs of pants that are black, light blue and dark blue use an organized list to determine the probability that Janice wears a white shirt and blue pants if she randomly chooses her outfit from her new clothes
Answer:
16.7%
Step-by-step explanation:
The first thing is to mention that they are two independent events, therefore the final probability is the multiplication of the two.
First event, select shirt. In total there are 4 and you must choose one of them, therefore the probability is:
1/4
Second event, select the pants. In total there are 3 and you must choose one of them, but there are two blue types, therefore any of the two is worth what means that the probability is:
2/3
The final probability:
P = 1/4 * 2/3
P = 0.167
Which means that the probability of choosing a white shirt and a blue pant (light or dark) is 16.7%
Could someone help me with this question please!
X:y = 5: 3 and x + y = 56
Work out the value of x-y
Which statements about the hyperbola are true? Select two options.
Answer:
The answer is B and E.
Step-by-step explanation:
Answer:
B and E are correct on edge
Step-by-step explanation:
What is the value of \dfrac{x^2}{y^1}
y
1
x
2
start fraction, x, squared, divided by, y, start superscript, 1, end superscript, end fraction when x=10x=10x, equals, 10 and y=5y=5y, equals, 5?
Answer:
20???
Step-by-step explanation:
The value of the expression x^2/y when x equals 10 and y equals 5, is computed by squaring x, which equals 100 in this instance and then dividing the result by y. Therefore, the result is 100 divided by 5, which equals 20.
Explanation:The subject of this question is determining the value of the expression x^2/y, a topic in Mathematics, specifically in Algebra. In this case, we are given that x = 10 and y = 5. The expression presented in the question is x^2/y. This mathematical expression states that x should be squared (i.e., x times x, which equals 10 times 10 in this instance) and the result should then be divided by y. Therefore, the solution can be found as follows:
First, square the value of x: 10*10 = 100.Then, divide this result by the value of y: 100/5 = 20.So, the value of x^2/y when x = 10 and y = 5 is 20.
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