1. A/an _______ triangle has all three angles measuring less than 90°. A. right B. obtuse C. scalene D. acute
What is the value of 60 tens?
You would multiply 60 times 10.
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Find all zeros of the function and write the polynomial as a product of linear factors. f(x) = 3x4 + 4x3 + 13x2 + 16x + 4
the set of points (2,3,), (9,3), (9, -2), and (2,-2) identifies the vertices of a quadrilateral. which is the most specific describtion to tell which figure the points form?
Solve the exponential equation algebraically and use a graphing utility
400/1+e^-x= 350
HELP!
Solve equation...
please show steps
A dozen long stem red roses cost $57 what is the unit rate of for roses
Apply the distributive property to create an equivalent expression.
1/2 (2a-6b+8) =?
Answer:
a - 3b + 4
Step-by-step explanation:
The distributive property indicates that two or more terms present in a sum or subtraction multiplied by another quantity, is equal to the sum or subtraction of the multiplication of each of the terms of the sum or subtraction by the number.
So,
1/2 (2a-6b + 8) = 1/2 (2a) + 1/2 (-6b) + 1/2 (8)
Now we multiply the factor (1/2) for each of the three terms,
1/2 (2a) + 1/2 (-6b) + 1/2 (8) = (2/2)a + (-6/2)b + (8/2) = a – 3b + 4
The solution is a - 3b + 4,
So we say that 1/2(2a - 6b + 8) is equivalent to a - 3b + 4.
The distributive property is solved to the equation and the expression is represented as A = a - 3b + 4
Given data:
To apply the distributive property to the expression 1/2(2a-6b+8), distribute the 1/2 to each term inside the parentheses.
1/2(2a-6b+8) can be rewritten as:
(1/2) * 2a + (1/2) * (-6b) + (1/2) * 8
Now, let's simplify each term:
(1/2) * 2a = a
(1/2) * (-6b) = -3b
(1/2) * 8 = 4
Putting it all together, the expression becomes:
A = a - 3b + 4
Hence, on applying the distributive property to 1/2(2a-6b+8) gives the equivalent expression as a - 3b + 4.
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Assume c and d function independently. for the system to function, either c or d must function.
a. if the probability that c fails is 0.08 and the probability that d fails is 0.12, find the probability that the system functions.
b. if both c and d have probability p of failing
The probability that the system functions is 1. In part b, the probability that the system functions is 2 - 2p.
Explanation:To find the probability that the system functions, we need to find the probability that either c or d functions. Since c and d function independently, we can use the addition rule of probability. The probability that c functions is 1 minus the probability that c fails, which is 0.08, so the probability that c functions is 1 - 0.08 = 0.92. Similarly, the probability that d functions is 1 - 0.12 = 0.88. Since either c or d must function, we can add the probabilities of c and d functioning: 0.92 + 0.88 = 1.80 (which exceeds 1 since it's not possible for both c and d to function simultaneously). Therefore, the probability that the system functions is 1.
In part b, if both c and d have a probability p of failing, then the probability that c functions is 1 - p, and the probability that d functions is also 1 - p. Again, using the addition rule of probability, the probability that the system functions is: (1 - p) + (1 - p) = 2 - 2p.
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Graph y=(x+2)^2-3
Show Vertex
Answer:
-3,2
Step-by-step explanation:
just took the test edge 2020
Can you please help me ??
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Quadrilateral ABCD is inscribed in this circle.
What is the measure of angle B?
Enter your answer in the box.
m∠B=
General Idea:
A cyclic quadrilateral has all its vertices on the circumference of the circle. The opposite angles of a cyclic quadrilateral are supplementary, that is it add up to get 180 degrees.
Applying the Concept:
Opposite angles B and D add up to give 180 degrees.
[tex] \angle B + \angle D=180\\ \\ 4x-20+x=180\\ Grouping \; like \; terms\\ \\ 4x+x-20=180\\ Combining \; like\; terms\\\\ 5x-20 =180\\ Adding \; 20 \; on\; both\; sides\\ \\ 5x-20+20=180+20\\ Combine\; like\; terms\\ \\ 5x=200\\ Divide\; 5\; on\; both\; sides\\ \\ \frac{5x}{5} =\frac{200}{5} \\ Simplify \; fraction\; on\; both\; sides\\ \\ x=40\\ \\ Substitute \; 40\; for\; x\; in\; the\; expression\; for\; \angle B \\ \angle B=4x-20=4(40)-20=160-20\\\\\angle B=140 [/tex]
Conclusion:
When Quadrilateral ABCD is inscribed in this circle, the measure of angle B for the given diagram is [tex] 140^{\circ} [/tex]
what is C=24x+80 R=44x breakeven point
Answer:
resumably this is number of units sold. Explanation: At the break even point Cost equals Revenue: 24x+80=44x. ⇒80=20x. ⇒x=4.
Step-by-step explanation:
In matrix T, what is the value of element t13?
a store is going out of business everything is marked down 40% how much do you pay for an item that cost $150
Solve –19 = x – 4. A. x = –76 B. x = 25 C. x = –15 D. x = –23
Answer:
The answer is : -15 (C)
Step-by-step explanation:
–19 = x – 4
x - 4 = -19
x = -19 + 4
x = -15
Harrison High School has 768 students. In 6 years, it is projected to have 1,157 students. What is the projected average rate of change per year in students over this time period?
Tomas wrote the equation y = 3x 3/4+. When Sandra wrote her equation, they discovered that her equation had all the same solutions as Tomas’s equation. Which equation could be Sandra’s?
Answer:
–6x + 2y = 3/2 is Sandra's equation.
Step-by-step explanation:
Given Equation of Tomas is
[tex]y=3x+\frac{3}{4}[/tex]
Solution of equation of Sandra is same as solution of Tomas Equation.
This only possible when ratio of the coefficients of the variable and constant term is equal.
So,
Multiply Tomas equation with 2.
2y= 6x + 3/2
This is one of the equation possible for Sandra's equation
Therefore, –6x + 2y = 3/2 is Sandra's equation.
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what is the value of log5 125
The game of european roulette involves spinning a wheel with 37 slots: 18 red, 18 black, and 1 green. a ball is spun onto the wheel and will eventually land in a slot, where each slot has an equal chance of capturing the ball. gamblers can place bets on red or black. if the ball lands on their color, they double their money. if it lands on another color, they lose their money.
Answer:
a) Expected amount of winnings = -$0.084
Standard deviation = $3.00
b) Expected amount of winnings = -$0.084
Standard deviation = $1.73
c) The expected winnings for both cases is exactly the same, but the spread of the wins about the expected value/mean is low in the case (b) compared to case (a).
So, with the expected winnings using the method in (a) and (b) the same, the risk associated with betting $3 dollar per game is higher because it has a higher standard deviation. This points to higher spread of losses and wins betting $3 once than betting $1 three different times.
Step-by-step explanation:
(a) Suppose you play roulette and bet $3 on a single round. What is the expected value and standard deviation of your total winnings?
It's either one wins or not with a bet of $3.
We can then obtain the probability mass function.
Random variable X represents the amount of winnings.
- If one bets $3 and picks the right colour, the person wins $6.
X = amount of winnings = 6 - 3 = $3
probability of winning = (18/37) = 0.486
- If one bets $3 and picks the wrong colour, then the person wins $0.
X = amount of winnings = 0 - 3 = -$3
Probability of losing = (19/37) = 0.514
The probability mass function is then
X | P(X)
3 | 0.486
-3 | 0.514
E(X) = Σ xᵢpᵢ
xᵢ = each variable
pᵢ = probability of each variable
E(X) = (3×0.486) + (-3×0.514) = -$0.084
Standard deviation = √(variance)
Variance = Var(X) = Σx²p − μ²
μ = E(X) = -0.084
Σx²p = (3²×0.486) + [(-3)² × 0.514] = 9
Variance = 9 - (-0.084)² = 8.993
Standard deviation = √8.993 = 2.999 = $3
(b) Suppose you bet $1 in three different rounds. What is the expected value and standard deviation of your total winnings?
With a bet of $1,
It's either one wins or not with a bet of $1.
We can then obtain the probability mass function.
Random variable X represents the amount of winnings.
- If one bets $1 and picks the right colour, the person wins $2.
X = amount of winnings = 2 - 1 = $1
probability of winning = (18/37) = 0.486
- If one bets $1 and picks the wrong colour, then the person wins $0.
X = amount of winnings = 0 - 1 = -$1
Probability of losing = (19/37) = 0.514
The probability mass function is then
X | P(X)
1 | 0.486
-1 | 0.514
E(X) = Σ xᵢpᵢ
xᵢ = each variable
pᵢ = probability of each variable
E(X) = (1×0.486) + (-1×0.514) = -$0.028
For 3 rounds of $1, the expected amount of winnings = 3 × -0.028 = -$0.084
Variance = Var(X) = Σx²p − μ²
μ = E(X) = -0.028
Σx²p = (1²×0.486) + [(-1)² × 0.514] = 1
Variance = 1 - (-0.028)² = 0.999216
Variance for combining 3 independent distributions = Σ λᵢ²σᵢ²
Variance of 3 rounds of $1 bets = 3[1²× var(X)] = 3 × var(X) = 3 × 0.999216 = 2.997648
Standard deviation = √(variance) = √(2.997648) = $1.73
(c) How do your answers to parts (a) and (b) compare? What does this say about the riskiness of the two games?
The expected winnings for both cases is exactly the same, but the spread of the wins about the expected value/mean is low in the case (b) compared to case (a).
So, with the expected winnings using the method in (a) and (b) the same, the risk associated with betting $3 dollar per game is higher because it has a higher standard deviation. This points to higher spread of losses and wins betting $3 once than betting $1 three different times.
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Solve the system of equations using the linear combination method.
{4x−3y=12
7x−3y=3
Enter your answers in the boxes.
x =
y =
Answer:
x = -3
y = -8
Step-by-step explanation:
I took the test
What is m∠KNL?
Enter your answer in the box.
There are several relationships between angles in a transversal.
The measure of KNL is 102 degrees.
From the figure,
Angles KNJ and JNM are corresponding angles
So, we have:
[tex]KNJ = JNM[/tex]
This gives
[tex]3(x + 14) = 5x + 2[/tex]
Open brackets
[tex]3x + 42 = 5x + 2[/tex]
Collect like terms
[tex]3x - 5x = 2 - 42[/tex]
[tex]-2x = -40[/tex]
Divide both sides by -2
[tex]x = 20[/tex]
Angle KNL is
[tex]\angle KNL =3(x + 14)[/tex]
Substitute 20 for x
[tex]\angle KNL =3(20 + 14)[/tex]
[tex]\angle KNL =3(34)[/tex]
[tex]\angle KNL =102[/tex]
Hence, the measure of KNL is 102 degrees.
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In a rhombus, an altitude from the vertex of an obtuse angle bisects the opposite side. Find the measures of the angles of the rhombus.
The angles of the rhombus determines the inclination of the sides of the
rhombus.
The correct response;The measures of the four angles of the rhombus are 60°, 60°, 120°, and 120°.Method used to arrive at the above response;Given;The altitude of the rhombus bisects the opposite side.
The angle of the rhombus at the vertex point of the altitude = An obtuse angle
Required:The measure of the angles of the rhombus
Solution:The length of the sides of a rhombus are equal.
The opposite angles of a rhombus are equal.
Let x represent the length of a side of the rhombus, we have;
The bisector from the vertex of the obtuse angle = An altitude
The angle the altitude forms with the side it bisects = 90°
Therefore;
The triangle formed by the altitude, half the bisected side and the side of the rhombus adjacent to the bisected side = A right triangle
The hypotenuse side to the right triangle = The side of the rhombus
Let θ represent the angle opposite the altitude, and between the sides of
the rhombus, in the right triangle by trigonometric ratios, we have;
[tex]\displaystyle cos(\theta) = \mathbf{\frac{Adjacent}{Hypotenuse}}[/tex][tex]\displaystyle cos(\theta) = \frac{0.5 \cdot x}{x} = 0.5[/tex]
θ = arccos(0.5) = 60°
Therefore, two acute (opposite) angles of the rhombus are 60°
The two obtuse angles of the rhombus are each = (360° - 2×60°) ÷ 2 = 120°
The angles of the rhombus are 60°, 60°, 120°, 120°.Learn more about trigonometric ratios here:
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Mike saves $42 a week for 7 weeks. During his 8-day vacation, he plans to spend $8.25 each day for snacks. Which expression shows how much money he will have left?
A) (42÷7)−(8⋅8.25)
B) (42⋅7)−(8⋅8.25)
C) (42⋅7)+(8⋅8.25)
D) 42⋅7⋅8⋅8.25
penny and her two friends each ate 1/6 of cake . how much cake did they eat
What is the constant of variation for the quadratic variation? 0.1y = 3x2
Answer:
The constant of variation for the given quadratic equation is, 30
Step-by-step explanation:
One of the form of a quadratic equation is written as:
[tex]y = kx^2[/tex] ....[1]
where k is the coefficient and for this case the constant of variation.
In order to obtain the answer for the given equation, we write the given equation to the form above.
[tex]0.1y=3x^2[/tex] or
[tex]y=(\frac{3}{0.1})x^2[/tex] or
[tex]y=30x^2[/tex]
Comparing this equation with equation [1], to get the value of k;
k=30.
therefore, the constant of variation is, 30.
Find the length of a rectangular prism having a volume of 2830.5 cubic meters , width of 18.5 meters, and height of 9 meters.
Use the compound interest formula to find the future value A for the following values.
P= $ 1,500
i = 0.075
n= 26
a round swimming pool has a circumference of 54 ft. Carrie wants to buy a rope to put across the diameter of the pool. the rope cost $0.85 per foot, and carrie need 3 feet more then the diameter of the pool. how much will carrie pay for the rope?