Answers
The line is the same in all answers, so you may look at the inequality signs. The shaded area is on top, this means greater than, and the line is not dashed, so it belongs to the solution: greater or equal than
Also, the division between the two is solid so it can be "equal to".
The answer is D
Related Questions
Which of the following is equivalent to 36^1/2?
A) –18
B) –6
C) 1/18
D) 1/6
Answers
Thus, it is (B)
√36=±6
So the square root of 36 is 6 and -6, and only -6 is among your choices.
Carly and janiya put some money into their money boxes every week. the amounts of money (y), in dollars, in their money boxes after certain amounts of time (x), in weeks, are shown by the equations below:carlyy = 60x + 40janiyay = 50x + 80after how many weeks will carly and janiya have the same amount of money in their money boxes and what will that amount be? 5 weeks, $280 5 weeks, $340 4 weeks, $280 4 weeks, $340
Answers
janiya : y = 50x + 80
60x + 40 = 50x + 80
60x - 50x = 80 - 40
10x = 40
x = 40/10
x = 4 <=== so at 4 weeks, they will have the same amount of money <==
The money they have is : y = 60(4) + 40.....y = $ 280 <=
so ur answer is : 4 weeks, $ 280
Which function is shown in the graph below?
Answers
Answer: The correct option is 2.
Explanation:
From the given figure it is easily noticed that the graph intersect the y-axis at y=9 , therefore the y-intercept is (0,9).
To find the equation of the curve put x=0 in each option, If we get y=9 then that option is true.
Option 1:
[tex]y=(\frac{1}{2})^{(x+3)}-1[/tex]
[tex]y=(\frac{1}{2})^{(0+3)}-1=\frac{1}{8}-1=\frac{-7}{8}[/tex]
Option 2:
[tex]y=(\frac{1}{2})^{(x-3)}+1[/tex]
[tex]y=(\frac{1}{2})^{(0-3)}+1=8+1=9[/tex]
Option 3:
[tex]y=(\frac{1}{2})^{(x-1)}+3[/tex]
[tex]y=(\frac{1}{2})^{(0-1)}+3=2+3=5[/tex]
Option 4:
[tex]y=(\frac{1}{2})^{(x+1)}-3[/tex]
[tex]y=(\frac{1}{2})^{(0+1)}-3=\frac{1}{2}-3=\frac{-5}{2}[/tex]
Only the equation in option 2 have the y-intercept (0,9), therefore the correct answer is option second.
Answer:
Its B
Step-by-step explanation:
Which of the following questions describes the equation w + 9 = -17? What number, A. when decreased by nine, is equal to negative seventeen?
B. What number, when added to negative seventeen, equals nine?
C. What number, when increased by nine, results in negative seventeen?
D. What number, when subtracted from nine, equals negative seventeen?
Answers
First, let's write our equation.
w + 9 = -17
We have "w + 9", which means "a number, w, is added to 9", and we have "= -17", which means "is equal to negative 17".
To solve for this, let's rewrite what's in quotation marks.
w + 9. A number, w, is added to 9 is equal to negative 17.
The answer choice that best matches this is "C.)", as it increases our number by 9 and is equal to negative 17.
I hope this helps!
A box contains 13 red hats, 15 white hats, 18 blue hats, and 14 brown hats. Nina randomly chooses a hat from the box.
What is the probability that it will NOT be white? Write your answer as a decimal.
Answers
13 + 15 + 18 +14 = 60 total hats
15 are white
60-15 = 45 hats that are not white
45/60 reduces to 3/4
3/4 =0.75 probability the hat will not be white
What is the sum of the measures of the exterior angles in a heptagon? Explain
Answers
When constructing inscribed polygons how can you be sure the figure inscribed is a regular polygon
Answers
Bill is riding his bicycle. He takes 5 hours to ride 62.5 kilometers. What is his speed?
Answers
or 12.5 kph
or 12 1/2 kph
Anita and Joelle bowled together and their combined total score for one game was 425 points. Anita’s score was 40 less than twice Joelle’s. What were their scores? Write a system of equations to model the problem if x represents Joelle’s score and y represents Anita’s score.
Answers
y=2x-40
Use substitution.
x+(2x-40)=425
3x-40=425
3x= 465
x=155
Plug in x value
y= 2(155)-40
y= 310-40
y= 270
Final answer: Anita-270, Joelle-155
A bus averages 60 mi/h traveling to its destination in the first half of its trip through an expressway and 72 mi/h in the second half traveling through a motorway. What is the bus's average speed for the entire trip rounded to the nearest tenth?
A) 64.2 mi/h
B) 63.0 mi/h
C) 65.5 mi/h
D) 66.0 mi/h
Answers
Answer:
The correct answer is 65.5 mi/h
Hope this helps :)
Shape 1 and shape 2 are plotted on a coordinate plane. Which statement about the shapes is true?
Answers
But given your multiple choice...
1) Shape 1 and 2 isn't congruent so false.
2) Shape 1 and 2 don't share the same coordinates because of a prior translation so false.
3) Shape 1 and 2 isn't congruent so false.
4) Shape 1 could be translated onto shape 2, but it still would not be congruent, so true.
Therefore the 4th one is true.
Angle c and angle d are supplementary, the measure of angle d is eight times the measure of angle
c. find measure of angle c and measure of angle d
Answers
d = 180 - c
and
d = 8c (given)
8c = 180 - с
8с + с = 180
9с = 180
с = 180/9
m∠с = 20°
m∠d = 8c = 8*20 = 160°
Answer:
160
Step-by-step explanation:
At what value of x does the graph of the function f(x) have a vertical asymptote?
F(x) = 5X/ 2X-6
Answers
2x-6=0
2x=6
x=3
So the vertical asymptote is the vertical line x=3
How do we refer to self-contained state actions: monadic. dyadic. triadic. k-adic?
Answers
In mathematics, self-contained state actions are known as k-adic. Monadic, dyadic, and triadic are specific cases of k-adic functions.
Explanation:In mathematics, self-contained state actions are known as k-adic. The term 'k-adic' refers to functions that take k inputs and produce a single output. Monadic, dyadic, and triadic are specific cases of k-adic functions, where k is 1, 2, and 3, respectively. Thus, it typically refers to a numeral or number system that is based on the value of k, which can be any positive integer.
In such systems, numbers are represented using a base of k, and each digit holds its own place value. K-adic expansions are useful in number theory and algebraic number theory, providing insights into number properties and relationships in various mathematical contexts.
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The profit in manufacturing x refrigerators per day, is given by the profit relation p = ¡3x2 + 240x ¡ 800 dollars. a how many refrigerators should be made each day to maximise the total profit? b what is the maximum profit?
Answers
The maximum of the function is given when [tex]x=- \frac{b}{2a} [/tex] where a and b are the constant of a quadratic form ax²+bx+c
We then have
a = -3
b = 240
Substitute these values into the maximum/minimum formula we have
[tex]x= \frac{-240}{2(-3)} = \frac{240}{6}=40 [/tex]
Which means that the maximum profit is obtained when the number of refrigerators produced is 40 items a day
The maximum profit is
p = -3(40)²+240(40)-800 = $4000
Final answer:
The firm should produce 40 refrigerators per day to maximize profit, resulting in a maximum profit of $4,000. A flat tax would reduce profit without affecting price directly, while a per unit tax could increase prices and alter the profit-maximizing output and profit levels.
Explanation:
Maximizing Profit and Effects of Taxes on a Firm's Profit
The profit that a firm makes from manufacturing x refrigerators per day is given by the profit function p = -3x^2 + 240x - 800, where p stands for profit. To maximize the total profit, we need to find the vertex of this quadratic function, which represents the highest point of the parabola on a graph. The x-coordinate of the vertex can be found using the formula -b/(2a), where a is the coefficient of x^2 and b is the coefficient of x. Substituting the values from the profit function, we get x = -240/(2*(-3)), which simplifies to x = 40. Thus, the firm should produce 40 refrigerators per day to maximize profit.
To find the maximum profit, we substitute x = 40 back into the profit function: p = -3(40)^2 + 240(40) - 800. After calculating, the maximum profit comes out to be $4,000 per day.
If a tax of $1,000 per day is imposed on the firm, this would lower the profit by the amount of the tax, without directly affecting the price. It's uncertain how the firm might react—whether they decide to increase the price to compensate or not is a strategic decision.
A tax of $100 per unit would likely cause the firm to increase the price by at least $100 to maintain their profit margins. The new profit function would be p = -3x^2 + (240-100)x - 800, which would also affect the profit-maximizing output. After recalculating with the new function, the firm would adjust its output and profit accordingly.
Which transformations can be used to map a triangle with vertices A(2, 2), B(4, 1), C(4, 5) to A’(–2, –2), B’(–1, –4), C’(–5, –4)? a 180 rotation about the origin a 90 counterclockwise rotation about the origin and a translation down 4 units a 90 clockwise rotation about the origin and a reflection over the y-axis a reflection over the y-axis and then a 90 clockwise rotation about the origin
Answers
Let ABC be first transformed onto A"B"C" by a 90° clockwise rotation.
Notice that B(4, 1) is mapped onto B''(1, -4). So the rule mapping ABC to A"B"C" is (x, y)→(y, -x)
so we are very close to (-y, -x).
The transformation that maps (y, -x) to (-y, -x) is a reflection with respect to the y-axis. Notice that the 2. coordinate is same, but the first coordinates are opposite.
ANSWER:
"a 90 clockwise rotation about the origin and a reflection over the y-axis"
Answer:
C. a 90 clockwise rotation about the origin and a reflection over the y-axis
Step-by-step explanation:
The sum of the roots of 5 - 2m - 3m2 = 0 is:
Answers
[tex]\displaystyle m_1 +m_2 = - \frac{b}{a}= \frac{2}{3} [/tex]
A + B = -b/a = -(-2) / -3 = -2/3
A mother has 3 kids. Kid A is half the mother's current age. Kid B is 4 years younger than Kid A. In 3 years, Kid C will be 1/5 of his mother's age (not her current age). The sum of all their current ages is the mother's current age.
How old is the mother currently?
How old is each of her kids?
Answers
i)
"Kid A is half the mother's current age."
thus, the age of Kid A is G/2
ii)
"Kid B is 4 years younger than Kid A."
this means, the age of Kid B is the age of Kid A - 4 = G/2 - 4
iii)
"In 3 years, Kid C will be 1/5 of his mother's age (not her current age). "
thus, in 3 years the age of Kid C will be 1/5(G+3)=1/5G+3/5
this means that the current age of Kid C is
1/5G+3/5-3=1/5G+3/5-15/5=1/5G-12/5 = (G-12)/5
The ages of the Kids A, B and C are:
G/2 , G/2 - 4, (G-12)/5
From the smallest Child's age (G-12)/5 we understand that G-12 is a multiple of 5,
so G-12 ∈{5, 10, 15, 20, 25, ....}
which means G∈{17, 22, 27, 32, 37, 42, 47, 51, 56, 61... }
From the age of the oldest child G/2, we understand that G must be an even number (so that G/2 is a whole number).
This means that G∈{22, 32, 42, 56,...}
If G was 22, the oldest child would be 11, which makes no sense
If G is 32, the oldest child is 16, which means the woman became a mother at the age of 16, which is rare, but possible.
then G/2=16 , G/2 - 4=12, (G-12)/5=(32-12)/5=20/5=4
If G is 42, her oldest child is 21, no more a "kid", but still, lets consider this case:
the age of the second child is 21-4=17, and the youngest (42-12)/5=6
Answer:
The Plausible cases are :
i) mother: 32, children 16, 12, 4
ii) mother: 42, children : 21, 17, 6
Final answer:
The mother is currently 40 years old. Kid A is 20 years old, Kid B is 16 years old, and Kid C is 36 years old.
Explanation:
Let's denote the mother's current age as M. Kid A's age is A = M/2. Kid B is 4 years younger than Kid A, so B = A - 4 = M/2 - 4. Kid C will be 1/5 of his mother's age in 3 years, so if we denote Kid C's current age as C, we have C + 3 = 1/5(M + 3). The sum of all their current ages is the mother's current age, so M = A + B + C. With these equations, we can solve for M, A, B, and C.
We substitute A and B into the mother's age equation: M = M/2 + M/2 - 4 + C. Rearranging terms, we get M - 4 = C. Now we have two expressions for C: M - 4 and 1/5(M + 3) - 3. Setting them equal to each other, we get M - 4 = 1/5(M + 3) - 3. Solving for M, we find that M = 40 years old.
Now we can find Kid A, B, and C's ages using the mother's age. Kid A is half the mother's age, A = M/2 = 20 years old. Kid B is 4 years younger than Kid A, B = A - 4 = 16 years old. Kid C's age can be found by the substitution, C = M - 4 = 36 years old. So the mother is 40 years old, Kid A is 20 years old, Kid B is 16 years old, and Kid C is 36 years old.
1) What kind of figure is formed by the cross section below?
square
rectangle
circle
ellipse that is not a circle
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Two integers that vary in sign
Answers
Allen bought 1,350 shares of stock for $12 per share. If he sold all his shares for $27,000, how much profit on each share did he make?
Answers
Solve the quadratic equation by completing the square.
x^2-10x+15=0
First, choose the appropriate form and fill in the blanks with the correct numbers.
Then, solve the equation. Round your answer to the nearest hundredth.
If there is more than one solution, separate them with commas.
Form:
( x + _ )^2 = _
or
( x - _ )^2 = _
Solution:
x = _
Answers
[tex](x-h) ^{2} +k=y[/tex]
When you complete the square the steps are these:
[tex] x^{2} -10x=-15[/tex]
[tex] x^{2} -10x+25=-15+25[/tex]
[tex](x-5) ^{2} =10[/tex]
and x = 5
What is the equation in point−slope form of the line passing through (−2, −5) and (2, 3)?
a) (y + 2) = −2(x + 5)
b) (y − 2) = 2(x − 3)
c) (y − 3) = 2(x − 2)
d) (y + 3) = −2(x + 2)
Answers
Now plug in y - 3 = 2( x - 2) Answer is c.
Point B is between A and C. If AB = 6 cm and BC = 11 cm, what is AC?
Answers
y varies inversely with x
k = 0.6
What is the value of x when y is 0.6?
Answers
to find X when K is known
divide K by Y
0.6/0.6 = 1
X = 1
Find the value of y. Look at image attached
Answers
Eight less than a number is seventy-five. What is the number? -67 67 83
Answers
8-75 = x
x=8+75
x= 83
the number is 83
If only 4.5% of the non- historically protected have a field stone and mortar foundation, how many homes is this?
Answers
0.045(134) = 6.03 which rounds to 6 <=
Andrea and raleigh are each rolling a fair, six-sided die. they roll their dice simultaneously, individually keeping a sum until someone reaches 100; whoever reaches 100 first wins. (if they reach 100 on the same roll, it's a tie.) andrea's die has sides 1, 2, 3, 4, 5, and 6. raleigh's has sides 1, 1, 1, 6, 6, and 6. who is more likely to win?
Answers
Let An be the likely number of rolls for Andrea to arrive at 100 or more, given that she is n away from the target of 100 (which means her current total is 100 - n ). Then we get the recurrence relation
An = 1 + (1/6) (An-1 + An-2 + An-3 + An-4 + An-5 + An – 6)
and the initial conditions A0 = A-1 = A-2 = A-3 = A-4 = A-5 = 0. This results in A100 = 29.0476 as the amount of expected rolls that Andrea has to make.
Now let Rn to be expected amount of rolls for Raleigh to arrive at 100 or more, given than he is also n away from the target of 100. Now the recurrence relation is:
Rn = 1 + (1/2) (Rn-1 + Rn-6)
with the initial conditions R0 = R-1 = R-2 = R-3 = R-4 = R-5 = 0. This gives us R100 = 29.1837 as the expected amount of rolls for Raleigh.
Therefore Andrea has to make less number of rolls thus she is expected to win.
Winner: Andrea
The area of an artist's square canvas can hold 113 square inches of paint. What is the approximate length of one side of the canvas? (Approximate to the nearest hundredth inch.)
10.62 inches
10.63 inches
10.64 inches
10.65 inches
Answers
A=xy, and a square is just a special rectangle where the two dimensions are equal. x=y=s, where s is the side length so the area of a square is:
A=s^2 we want to solve for s so
s^2=A
s=√A, and we are told that the area is 113 in^2
s=√113 in
s≈10.63 in (to nearest hundredth of an inch)
The area of the square canvas is the square of its side length
The length of the side of the square canvas is 10.63 inches
The area the square canvas can hold is given as:
[tex]Area=113in^2[/tex]
The canvas has a square as its shape, and the area of a square is:
[tex]Area = L^2[/tex]
Where:
L represents the length of the shape (i.e. the square canvas)
So, we have:
[tex]L^2 = 113[/tex]
Take square roots of both sides
[tex]L = \sqrt{113[/tex]
Take the square root of 113
[tex]L = 10.63[/tex]
Hence, the length of the side is 10.63 inches
Read more about areas at:
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