Answer:
D
Step-by-step explanation:
D
Let y+4=1/2×-2
when x=0 , y+4=-2
x=-6
let x=0 , y=-10
y+4≤ 1/2×1/-2
-10+4≤1/2.0-1/2
-6≤1/-2 So, (0, -10) is in the area
Hence, D is right
A certain breed of mouse was introduced onto a small island with an initial population of 340 mice, and scientists estimate that the mouse population is doubling every year.
(a) Find a function that models the number of mice m after t years.
(b) Estimate the mouse population after 6 years.
(a) The function that models the number of mice after t years is m(t) = 340 * 2^t.
(b) The estimated mouse population after 6 years is 21,760.
(a) To find a function that models the number of mice after t years, we can use the exponential growth formula, which is given by:
m(t) = m₀ * 2^t
Where:
m(t) represents the number of mice after t years.
m₀ is the initial population of mice.
In this case, the initial population of mice is 340, so the function that models the number of mice after t years would be:
m(t) = 340 * 2^t
(b) To estimate the mouse population after 6 years, we can substitute t = 6 into the function:
m(6) = 340 * 2^6
m(6) = 340 * 64
m(6) = 21,760
Therefore, the estimated mouse population after 6 years is 21,760.
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Write the equation in point-slope form of the line that passes through the given point and has the given slope: (-2, -1); m=-3
Answer:
y+1=-3(x+2)
Step-by-step explanation:
point-slope form is the formula y-y1=m(x-x1), where (x1, y1) is a point and m is the slope
we are given a point (-2, -1) and a slope of -3
all we really need to do is substitute the given into the formula
remember: since the formula gives subtraction, we're going to be subtracting, even though we have negative numbers
substitute -2 as x, -1 as y and -3 as m
y--1=-3(x--2)
we can simplify this equation:
y+1=-3(x+2)
Hope this helps!
Sandy used a virtual coin toss app to show the results of flipping a coin 100 times, 500 times, and 1,000 times. Explain what most likely happened in Sandy's experiment.
How can I solve y^2 + 13y + 12?
\((y + 1)(y + 12)\)
\(\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}\)
\( {y}^{2} + 13y + 12 \\ = {y}^{2} + 12y + 1y + 12 \\ taking \: common \: factor \: from \: the \: two \: pairs \\ = y(y + 12) + 1(y + 12) \\ = (y + 1)(y + 12)\)
\(\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}\)
please someone help me on this question
Answer:
A
Step-by-step explanation:
That is the original and unchanged version of the quadratics.
Hope this helped! :)
A triangle has sides with lengths of 14 meters, 28 meters, and 34 meters. Is it a right triangle? Questions answered
Answer:không phải vì khi thay vào định lý
\(\sqrt{14^{2} +28^{2} } =14\sqrt{5}\neq 34\)
by-step explanation:
Tell the mistake that was made in solving this equation. Tell the answer and one thing that is important to remember when simplify.
-8y+5x+3y-9x
-11y+5x+-9x
-11y+14x
Answer:
-8y + 5x +3y-9x
-8y+3y+5x-9x
-5y-4x
will mark brainliest!!
Number 5 is the problem i need help with. thanks :)
Answer:
cylinder 1 has a radius of 8 cm
cylinder 2 has a radius of 2.5 cm
Step-by-step explanation:
cylinder 1:
we know... h = 10cm \(\pi\) = 3.14 and 2009.6 \(cm^{3}\)
plug these values into the volume formula: 2009.6 = (3.14) (r^2) (10)
multiply 10 and 3.14: 2009.6 = (31.4) r^2
divide both sides by 31.4: 64 = r^2
put both sides under a root square: 8 = r
cylinder 2:
we know... h = 10cm \(\pi\) = 3.14 and 196.25 \(cm^{3}\)
plug these values into the volume formula: 196.25 = (3.14) (r^2) (10)
multiply 10 and 3.14: 196.25 = (31.4) r^2
divide both sides by 31.4: 6.25 = r^2
put both sides under a root square: 2.5 = r
need help pleas fast
Answer:
B
Step-by-step explanation:
because a doesnt make since it never said they were males
PLSS HELP ASAP!! I WILL GIVE YOU BRAINLYEST!!
A garden store randomly samples recent
purchase receipts. The results are shown.
If the store has 300 receipts in one weekend,
how many daisies were most likely purchased?
F 2,400 daisies
G 308 daisies
H 225 daisies
J 32 daisies
Answer:
F
Step-by-step explanation:
Answer:
2,400
Step-by-step explanation:
All you gotta do is multiply :D
Solve
\(0.1 = \sqrt{r} \)
Solve for r.
Write your answer as a decimal
r=______
Answer:
\(r = 0.01\)
Step-by-step explanation:
In order to find r we have to square both sides of the equation
\(0.1 = \sqrt{r} \\ {0.1}^{2} = { \sqrt{r} }^{2} \)
The *square root* sign cancels out the *squared* sign therefore:
\( {0.1}^{2} = r \\ 0.01 = r\)
If we have an effect, would error variance go away?
No, the presence of an effect does not necessarily imply that error variance will go away.
Why could not error variance go away?The presence of an effect does not necessarily imply that error variance will go away. In fact, error variance is an inherent part of any statistical model and represents the amount of variation in the response variable that is not explained by the predictor variables.
Even if a predictor variable has a significant effect on the response variable, there may still be some unexplained variation in the response that is attributable to error variance.
It is important to take into account and control for error variance in any statistical analysis, as it can affect the precision and accuracy of the estimates of the model parameters and can also influence the interpretation of the results.
One way to control for error variance is to use appropriate statistical methods, such as analysis of variance (ANOVA), regression analysis, or other modeling techniques that take into account the variability in the data.
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Hellpppppppppppppppppppp
Answer:
its b
Step-by-step explanation:
7 x 13 = 91
12 x 13 = 156
so u divide 143 by 13 and u get 11
Answer:
B
Step-by-step explanation:
The answer is B because you have to figure out how many $ he gets from mowing 1 yard which is found by dividing the number of money to the number of yard he mowed for one of the weeks it doesn't matter which one.The answer to how much he gets for 1 yard is 13 dollars so the last step is the divide 143 by 13
Arrange the following numbers in ascending order :
4³, 7² , -3⁴ , 9 , 2⁵
Answer:
A is the correct one
Step-by-step explanation:
Which x-value would make the set of ordered pairs below a function? { (__, 5) (–6, 6) (3, 12) (–7, 7) (2, 4) } A. 2 B. –7 C. 6 D. 3
9514 1404 393
Answer:
C. 6
Step-by-step explanation:
For the relation to be a function, the x-values of the ordered pairs must be unique (none repeated). The given x-values are {-7, -6, 2, 3}. Only answer choice 6 is not in this set. The x-value 6 will make the relation a function.
The perimeter (adding up all the sides) of a rectangular
piece of land is 42 meters. The length of the land can
be shown by (x + 4) and its width can be shown by
(2x – 7).
Solve for x, and then plug it back in to find the Length
and the Width of the land.
-7)
Answer:
x = 8
length is 12 meters
width is 9 meters
Step-by-step explanation:
P = 2l + 2w
where l is the length and w is the width.
(There are two sides with the same length, and two sides with the same width.)
Let l = x + 4 and w = 2x - 7
so 2(x+4) + 2(2x-7) = 42
Distribute the 2s
2x + 8 + 4x - 14 = 42
Combine like terms
2x + 4x + 8 - 14 = 42
Group
6x - 6 = 42
Add 6 to both sides
6x = 48
Divide 6 on both sides
x = 8
Plug back in
l = 8 + 4 = 12 meters
and w = 2(8) - 7 = 16 - 7 = 9 meters
Double-check: 2 * 12 + 2 * 9 = 24 + 18 = 42
Mariya is solving the quadratic equation by completing
the square.
4x2-20x+3=0
4x2-20x=-3
A(x2-5x)=-3
what is the question, I'm confused?
Answer:
This is the best I can do because your question is un clear
Step-by-step explanation:
A state lottery game consists of choosing one card from each of the four suits in a standard deck of playing cards. There are 13 cards in each suit.) Consider the event that four cards, each of a different face value, are chosen. How many choices are available for each card? First Card 52 Second Card 48 Third Card Last Card 40 Count the number of ways in which four cards, each of a different face value, can be chosen 4392960 x ways
As given, there are 13 cards in each suit of the standard deck of playing cards. Thus, the total number of cards in the deck is 13 × 4 = 52.To find the number of ways in which four cards, each of a different face value, 52 x 48 x 44 x 40 = 4392960 x ways
Now, let us find out the number of choices available for each card: For the first card, we can choose any of the 52 cards from the deck. For the second card, we have already selected one card, so we can choose any of the remaining 52 - 1 = 51 cards from the deck. For the third card, we have already selected two cards, so we can choose any of the remaining 52 - 2 = 50 cards from the deck. For the fourth and the final card, we have already selected three cards, so we can choose any of the remaining 52 - 3 = 49 cards from the deck. Therefore, the number of choices available for each card is as follows: First Card: 52 Second Card: 51 Third Card: 50 Fourth Card: 49 Now, we need to count the number of ways in which four cards, each of a different face value, can be chosen. We can use the multiplication principle to do this. According to the multiplication principle, the total number of ways in which a sequence of events can occur is the product of the number of ways each event can occur. Therefore, the total number of ways in which we can choose four cards, each of a different face value, is: Total number of ways = Number of ways to choose the first card × Number of ways to choose the second card × Number of ways to choose the third card × Number of ways to choose the fourth card = 52 × 51 × 50 × 49= 6,497,400 However, this includes the cases where there are two or more cards of the same face value. Therefore, we need to subtract the number of cases where there are two or more cards of the same face value. We can use the principle of inclusion and exclusion to do this. According to the principle of inclusion and exclusion, the number of ways in which at least two cards have the same face value is: Number of ways in which at least two cards have the same face value = Number of ways in which two cards have the same face value − Number of ways in which three cards have the same face value + Number of ways in which four cards have the same face value Number of ways in which two cards have the same face value: We can choose the face value for the two cards in 13C1 ways. We can choose the two suits for the first card in 4C2 ways. We can choose the two suits for the second card in 2C1 ways. We can choose any of the remaining 11 cards for the third card in 11C1 ways. We can choose any of the remaining 2 suits for the third card in 2C1 ways. We can choose any of the remaining 10 cards for the fourth card in 10C1 ways. We can choose any of the remaining 2 suits for the fourth card in 2C1 ways. Therefore, the total number of ways in which two cards have the same face value is: 13C1 × 4C2 × 2C1 × 11C1 × 2C1 × 10C1 × 2C1 = 1,098,240 Number of ways in which three cards have the same face value: We can choose the face value for the three cards in 13C1 ways. We can choose the three suits for the first card in 4C3 ways. We can choose any of the remaining 12 cards for the fourth card in 12C1 ways. We can choose any of the remaining 2 suits for the fourth card in 2C1 ways. Therefore, the total number of ways in which three cards have the same face value is:13C1 × 4C3 × 12C1 × 2C1 = 51,840 Number of ways in which four cards have the same face value: We can choose the face value for the four cards in 13C1 ways. We can choose any of the 4 suits for the first card in 4C1 ways. Therefore, the total number of ways in which four cards have the same face value is: 13C1 × 4C1 = 52 Now, we can use the principle of inclusion and exclusion to find the number of ways in which four cards, each of a different face value, can be chosen: Total number of ways = Number of ways to choose four cards, each of a different face value= 52 × 51 × 50 × 49 − (1,098,240 − 51,840 + 52)= 4,392,960 Therefore, the number of choices available for each card is as follows: First Card: 52Second Card: 51Third Card: 50Fourth Card: 49Count the number of ways in which four cards, each of a different face value, can be chosen: 4,392,960 x ways.
1. First Card: You have 52 choices, as there are 52 cards in the deck.
2. Second Card: Since you need a different face value, you have 48 choices (12 cards of different face values multiplied by 4 suits).
3. Third Card: For the third card, you have 44 choices (11 remaining face values multiplied by 4 suits).
4. Last Card: For the last card, you have 40 choices (10 remaining face values multiplied by 4 suits).
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a bus stops 5 people get off. then 11 people get on a bus now there are 19 people on the bus
Answer:
13 people
Step-by-step explanation:
If you're looking for how many people were on the bus before the most recent stop.
19-11 = 8
8 + 5 = 13
Zack determined that the mass of his math book is 1.38 kilograms what is the mass? In grams of his math book
Answer:
1380 grams
Step-by-step explanation:
to convert from kg to g, you divide by 100
If a 4 ft. pole casts a 5 ft shadow, how high is a pole that casts a 15 ft shadow? 1
Answer:
12 ft!!
Step-by-step explanation:
can u pls mark me brainliest?
Answer:
x=12 ft
Step-by-step explanation:
4/5=x/15
Multiply 5 and x to get 5x, then multiply 4 and 15 to get 60, then you're left with the equation 5x=60. Divide both sides of the equation by five to get 12 :D.
Give an answer quick
Answer:
The price of one DVD is 4 and price of one CD is 5
Step-by-step explanation:
2DVDs and 2CDs = 18
3DVDs and 2CDs = 22
DVDs can be x and CDs can be y:
2x + 2y = 18
3x + 2y = 22
Subtract to get:
-x = -4
x = 4
So the price of one DVD is 4
Plug that into one of the original equations:
2x + 2y = 18
2(4) + 2y = 18
8 + 2y = 18
2y = 10
y = 5
So the price of one CD is 5
Look at the picture and tell me
Poppy's sister used approximately 3.14 inches more wire per wall hanging than Poppy.
How to find the amount of wire used ?To find the amount of wire used by both Poppy and her sister, we'll calculate the circumference of their respective wall hangings using the formula:
C = 2πr
Since the diameter is twice the radius, we can find her sister's radius as follows:
Poppy's radius = 6.25 inches
Poppy's diameter = 2 * 6.25 = 12.5 inches
Sister's diameter = Poppy's diameter + 1 = 12.5 + 1 = 13.5 inches
Sister's radius = 13.5 / 2 = 6.75 inches
Now, we'll calculate the circumferences using the given value for π:
Poppy's circumference = 2 x 3.14 x 6.25 ≈ 39.25 inches
Sister's circumference = 2 x 3.14 x 6.75 ≈ 42.39 inches
Difference = Sister's circumference - Poppy's circumference
Difference = 42.39 - 39.25 = 3.14 inches
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the sales force for a publishing company is constantly on the road trying to sell books. as a result, each salesperson accumulates many travel-related expenses that he or she charges to a company-issued credit card. to prevent fraud, management hires an outside company to audit a sample of these expenses. for each salesperson, the auditor prints out the credit card statements for the entire year, randomly chooses one of the first 20 expenses to examine, and then examines every 20th expense from that point on. which type of sampling method is the auditor using for each salesperson?
Systematic random sampling is the sampling method is the auditor using for each salesperson.
Define sampling method.Sampling techniques in a statistical study refer to how participants are chosen from the population to participate in the study. If a sample isn't chosen at random, it will likely be skewed in some way, and the results might not be generalizable.
Given,
The sales force for a publishing company is constantly on the road trying to sell books. as a result, each salesperson accumulates many travel-related expenses that he or she charges to a company-issued credit card. to prevent fraud, management hires an outside company to audit a sample of these expenses. for each salesperson, the auditor prints out the credit card statements for the entire year, randomly chooses one of the first 20 expenses to examine, and then examines every 20th expense from that point on.
Systematic random sampling is the sampling method is the auditor using for each salesperson.
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Which type of dilation are the given scale factors? Select Expansion or Contraction to correctly describe the type of dilation for each given scale factor. Scale Factor Expansion Contraction −4 Expansion – negative 4 Contraction – negative 4 −34 Expansion – negative fraction 3 over 4 end fraction Contraction – negative fraction 3 over 4 end fraction 23 Expansion – 2 over 3 Contraction – 2 over 3 2.5 Expansion – 2.5 Contraction – 2.5
The required types of dilation are the given scale factors are,
Scale factor = -4 [contaction]
Scale factor = 2.5 [Expansion]
Scale factor = 2/3 [contraction]
Scale factor = -3/4 [contraction]
The scale factor is defined as the ratio of the modified change in length to the original length.
here,
The type of dilation can be stated as if the scale factor is positive and greater than 1 there must be an expansion while if the scale factor is less than 1 then there will be a contraction.
So
From the table,
Scale factor = -4 [contaction]
Scale factor = 2.5 [Expansion]
Scale factor = 2/3 [contraction]
Scale factor = -3/4 [contraction]
Thus, the required solution is given above,
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Renee bought a chocolate bar for her friend. The chocolate weighed 45.8 grams. Renee's little brother ate 29.6 grams of the chocolate. Now how much chocolate does Renee have?
Which equation describes the problem? Use c to express the unknown value.
Answer:
16.2
Step-by-step explanation:
45.8 - 29.6 = 16.2
Renee would have 16.2 grams of chocolate.
find x please?
If these angles are given
Answer:
x = 24°
Step-by-step explanation:
You want the measure of angle x in the given figure.
Sum of anglesLet the angle at lower right be represented by y. Then the sum of angles in the larger triangle is ...
41° +94° +y = 180°
The sum of angles in the smaller triangle is ...
111° +x +y = 180°
SolutionEquating the two expressions for 180° gives ...
41° +94° +y = 111° +x +y
x = 41° +94° -111° . . . . . . . . . . subtract (111° +y)
x = 24°
The value of x is 24°.
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what does ctrl or command z stand for
Answer: It means Undo
Step-by-step explanation:
You are performing an experiment in your lab. to compare with other experiments your results must be in moles. during your final step you burn a strip of magnesium (mg), which results in 187 grams of magnesium oxide (mgo). how should you enter your results?
4.6 moles in 187 grams of magnesium oxide (mgo).
What is mole explain with example?One mole is defined as the amount of substance containing as many elementary entities (atoms, molecules, ions, electrons, radicals, etc.) as there are atoms in 12 grams of carbon - 12(6. 023×1023). The mass of one mole of a substance equals to its relative molecular mass expressed in grams.The relative formula mass of a compound is calculated by adding together the relative atomic mass values for all the atoms in its formula. Moles are units used to measure substance amount. Chemistry (Single Science) Atomic structure.
To solve ,
number of moles is equals to the mass in grams divided by RFM
RFM=16+24.3=40.3
=187/40.3
=4.6 moles of MgO
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r/2=(r-4)/7 how do i solve this?