Lisa has a certain amount of money. She spent $39 and has 3/4 of the original amount left. How much money did she save originally
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Related Questions
3. The range of (x) = 2(x - 1) - 6 is
a. {YER/y > -6}
b. {YER/y
c. {YER/y < -6}
d. {YER/y > -1}
e. {YER}
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Answer:d
Step-by-step explanation:
What is the measure of the missing angle?
35°
105°
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Answer:
Answer: 40 degrees
Step-by-step explanation:
If this is a triangle the missing angle would be 40 degrees because
35 + 105 + 40 = 180
Hope this helps!
5. Suppose X 1and X 2are random variables with mean 10,20 respectively, and SDs 2, 3 respectively.
Let T=11X 1−2X2
Find the mean and SD of T when X 1and X 2are independent.
Find the mean and SD of T when X1and X 2 have correlation of
−0.76
In the case that X1and X 2 are independent, normally distributed
variables, find P(T>30)
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The mean of T is -10 and the standard deviation of T is √425 when X1 and X2 are independent.
To find the mean of T, we can use the properties of expected values. Since T = 11X1 - 2X2, the mean of T can be calculated as follows: E(T) = E(11X1) - E(2X2) = 11E(X1) - 2E(X2) = 11(10) - 2(20) = -10. To find the standard deviation of T, we need to consider the variances and covariance of X1 and X2. Since X1 and X2 are independent, the covariance between them is zero. Therefore, Var(T) = Var(11X1) + Var(-2X2) = 11^2Var(X1) + (-2)^2Var(X2) = 121(2^2) + 4(3^2) = 484 + 36 = 520. Thus, the standard deviation of T is √520, which simplifies to approximately √425. When X1 and X2 have a correlation of -0.76, the mean and standard deviation of T remain the same as in the case of independent variables. To calculate the probability P(T > 30) when X1 and X2 are independent, normally distributed variables, we need to convert T into a standard normal distribution. We can do this by subtracting the mean of T from 30 and dividing by the standard deviation of T. This gives us (30 - (-10))/√425, which simplifies to approximately 6.16. We can then look up the corresponding probability from the standard normal distribution table or use statistical software to find P(T > 30). The probability will be the area under the standard normal curve to the right of 6.16.
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what is a common denominator for 3/4 and 3/5
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Step-by-step explanation:
multiply the bottom numbers to get the common denominator quickly
4*5 = 20
20 is the common denominator and answer
The common denominator to both the fractions is 20.
What is a expression? What is a mathematical equation? What is Equation Modelling? What is denominator?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem. In a fraction say (x/y), [y] is called denominator.
We have two fractions (3/4) and (3/5).
We have -
3/4 and 3/5
Multiply both the numerator and denominator by 5 in the fraction 3/4, we get -
(3 x 5)/(4 x 5)
15/20
Multiply both the numerator and denominator by 4 in the fraction 3/5, we get -
(3 x 4/5 x 4)
12/20
Therefore, the common denominator to both the fractions is 20.
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Find the slope of the line that passes through (3,11) and (7, 10)
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the slope of the line will be:
\(m=\frac{11-10}{3-7}=-\frac{1}{4}\)radius = 3 ¼ydArea of a circle = ?help
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Answer:
Area of circle = 33.17 yd²
Explanation:
First, we need to convert the number 3 ¼ yd into a decimal number, so:
\(3\frac{1}{4}=3+\frac{1}{4}=3+0.25=3.25\text{ yd}\)Then, the area of a circle can be calculated using the following equation:
\(\text{Area}=\pi\cdot r^2\)Where π is approximately 3.14 and r is the radius of the circle. So, if we replace π by 3.14 and r by 3.25 yd, we get:
\(\begin{gathered} \text{Area}=3.14\cdot(3.25)^2 \\ \text{Area = 3.14 }\cdot\text{ (10.56)} \\ \text{Area = 33.17 yd}^2 \end{gathered}\)Therefore, the answer is 33.17 yd²
plz help im dying to know the answer please hurry asap please
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y'all I need help asap
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Answer:
Let's solve for x.
4x+5y=7
Step 1: Add -5y to both sides.
4x+5y+−5y=7+−5y
4x=−5y+7
Step 2: Divide both sides by 4.
4x/4=−5y+7/4
x=−5/4 y+ 7/4
Answer: for the first one x=−5/4 y+ 7/4
3x−2y=−12
Step 1: Add 2y to both sides.
3x−2y+2y=−12+2y
3x=2y−12
Step 2: Divide both sides by 3.
3x/3=2y−12/3
x=2/3y−4
Answer:
x=2/3y−4
Step-by-step explanation:
1. Explain why 3(x + 4) = 3(x - 5) has no solution.
Answers
Answer:
There is no solution because they are not equal
Step-by-step explanation:
3(x + 4) = 3(x - 5) cannot simply happen, as they are not equal.
Hope this helps!
Solve for x.
(13x-32)
S
T
V
(7x + 22)°
U
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Answer:
x=9
Step-by-step explanation:
13x-32 and 7x+22 are equal to each other (angles) so
13x-32=7x+22
13x-7x=22+32
6x=54
x=54/6
x=9
CORRECT ANSWER GETS BRAINLIEST AND POINTS!!!! COME ASAP 50 MINS LEFT
Use the data set to determine which statements are correct. Check all that apply. 115, 120, 118, 104, 109, 148, 135, 141, 139 The median is 120. The median is 109. There is an outlier. The lower quartile is 118. The lower quartile is 112 The upper quartile is 140. The upper quartile is 141. The interquartile range is 28
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Answer:
The median is 120.
The lower quartile is 112.
The upper quartile is 140.
The interquartile range is 28.
Step-by-step explanation:
its hand proven
Answer:
X = wrong.
^ = correct
Step-by-step explanation:
^ The median is 120.
X The median is 109.
X There is an outlier.
X The lower quartile is 118.
^ The lower quartile is 112.
^ The upper quartile is 140.
X The upper quartile is 141.
^ The interquartile range is 28.
Hope this helps!!!
please and this quickly and no links please
Answers
Answer:
11 months
Step-by-step explanation:
Since he has already read 14 books subtract them from the 80 books. you'll end up with 66. then diviid by 6 and you'll get 11 months
very unsure of this answer so pls help asap if you can!!
Answers
The following can be shown about the diagonals of parallelogram PQRS to compare the proof that diagonals of a parallelogram bisect each other: B. PR and SQ have the same midpoint.
What is a parallelogram?In Mathematics and Geometry, a parallelogram is a geometrical figure (shape) and it can be defined as a type of quadrilateral and two-dimensional geometrical figure that has two (2) equal and parallel opposite sides.
In order for any quadrilateral to be considered as a parallelogram, two pairs of its parallel opposite sides must be equal (congruent). This ultimately implies that, the diagonals of a parallelogram would bisect one another only when their midpoints are the same:
(Line segment PR)/2 = (Line segment SQ)/2
Line segment PR = Line segment SQ
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A graph with 6 vertices and 2 faces has 6 edges Select one: True False
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False. A graph with 6 vertices and 2 faces does not necessarily have 6 edges.
In a graph, the number of edges is related to the number of vertices and faces through Euler's formula, which states that the number of vertices plus the number of faces minus the number of edges equals 2. In this case, the given graph has 6 vertices and 2 faces. Applying Euler's formula, we have 6 + 2 - E = 2, where E represents the number of edges. Simplifying the equation, we get 8 - E = 2, and solving for E, we find that E = 6. Therefore, the graph with 6 vertices and 2 faces has 6 edges.
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ill give brainliest n a recent survey, 3 out of every 5 students said Math is their favorite class.If 200 students were surveyed, how many students can be expected to choose math as their favorite class?Answer options with 4 optionsA.75B.80C.120D.125
Answers
Answer: D. 120 students
Step-by-step explanation:
This is an easy solution
Take 300 and divide it by 5
300/5
This will result in 40
Now Multiply 40 by 3
Like so: 40x3
This will result in 120
Answer:
C) 120
Step-by-step explanation:
Ratio - 3:5
200 times 3/5 = 120
Convert 4/7 to 42nds
Answers
Answer:
24... I hoped dis helped.
please help me with these questions I am begging anyone please help
(a)• production cost of a wooden cupboard is Rs.30,000.the manufacturer marked the price in order to obtain a 20% profit .if the payment is done outright 2% discount is given
questions
(1) what is the marked price of the cupboard?
(2) what is the outright price of the cupboard?
(3) find the price percentage gained by selling the cupboard for outright price ?
(b)• a furniture seller asks for 5% commission to sell 5 cupboard of Rs.35.000 each find the commission he receives
please help me
Answers
Answer:
1)rs.6000
Step-by-step explanation:
1)30 000*20/100=rs.6000
Sorry I don't know the answers for other questions cause I don't know outright price
Find the area of the figure
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Answer:
11000
Step-by-step explanation:
1) What is the value of the expression 3 4 + 15.45 - 19.75 + 7.87?
Answers
Answer:
37.57
Step-by-step explanation:
34 + 15.45 - 19.75 + 7.87
34 + 15.45 = 49.45
49.45 - 19.75 + 7.87
49.45 + 7.87 = 57.32
57.32 - 19.75 = 37.57
Define the domain and range of the function and state whether it is one-to-one, onto, both or neither.
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Answer:
Neither
Step-by-step explanation:
After lunch.my family has 1/8 of a pizza left. If I took half of the leftovers for my snack, what fractional part of the pizza is left?
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Answer:
-0.875 that is the answer
Step-by-step explanation:
(1/8)-1=-0.875 that's the answer
graph the function
g(x)=3x^2+1
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Answer:
x=1, y=4;
x=2, y=13
Step-by-step explanation:
Geometry 6.2
What is m∠N
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Check the picture below.
You have a choice to invest in one of three different college funds to save up for college. You need to save at least $14,000 for your first year. In which of the three accounts do you choose to invest your money given that you have $10,000 to invest and you would like to accrue as much interest as possible?
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Answer: C) You choose account #2
===================================================
Explanation:
Let's compute the final balance for account 1.
We'll use the compound interest formula
A = P*(1+r/n)^(n*t)
where,
P = principal or amount depositedr = decimal form of the annual interest raten = number of times we compound the interest per yeart = number of yearswhere in this case
P = 10,000r = 0.035 n = 4 t = 10So with all that in mind, we get
A = P*(1+r/n)^(n*t)
A = 10,000*(1+0.035/4)^(4*10)
A = 14,169.0883793113
A = 14,169.09
Account #1 gets us $14,169.09 which is over our goal of $14,000
--------------------------
Let's repeat this idea for account 3. I'll get back to account 2 in the next section.
For account 3, we have these inputs
P = 10,000r = 0.032n = 1t = 10leading to...
A = P*(1+r/n)^(n*t)
A = 10,000*(1+0.032/1)^(1*10)
A = 13,702.4104633564
A = 13,702.41
This isn't larger than 14,000. So we cannot use account 3. The interest rate is too small and needs to be bumped up.
--------------------------
Now let's compute account 2. We'll use the continuously compounded interest formula which is
A = P*e^(rt)
The P, r and t are the same as before. The 'e' is a constant and it's roughly e = 2.718... similar to how pi = 3.14... approximately.
I recommend using the calculator's stored value of 'e' to get as much accuracy as possible.
So,
A = P*e^(rt)
A = 10,000*e^(0.036*10)
A = 14,333.2941456052
A = 14,333.29
This exceeds 14,000 so we can use this account.
Comparing this to account 1's value (14,169.09), we can see that account 2 gets us the most money over the 10 year time period. Not only does account 2 have the higher interest rate, but it also has an infinitely higher compounding frequency as well. These two factors help contribute as to why account 2 beats out account 1.
This is why we should go for account 2.
In the right triangle shown in the diagram below,
what is the value of x to the nearest whole number?
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Answer: (3) 21
Step-by-step explanation: 20.78 rounded to 21
Find the reference angle for a rotation of 253º.
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Given the angle:
253 degrees
Let's find the reference angle to the given angle for a rotation.
The given angle, 253 degrees, is in quadrant 3.
To find the reference angle of ang angle in quadrant 3, we have:
\(\theta_{ref}=\theta-180\)Hence, we have:
\(\begin{gathered} \theta_{ref}=253-180 \\ \\ \theta_{ref}=73^o \end{gathered}\)Therefore, the reference angle is 73 degrees.
ANSWER:
73°
It is as yet an unproven conjecture that there exist infinitely many pairs of primes that differ by two. These special prime numbers (e.g., 17 and 19, or 1019 and 1021) are sometimes known as "prime pairs" but are best known as what?
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These special prime pairs are best known as "twin primes."
The question is about the unproven conjecture that there exist infinitely many pairs of prime numbers that differ by two, which are best known as a specific term. These special prime numbers, such as (17 and 19) or (1019 and 1021), are sometimes called "prime pairs" but they are best known as "twin primes."
Twin primes are the pairs of prime numbers that differ by a number of two, such as (3, 5), (5, 7), (11, 13), (17, 19), and so on. The conjecture that there are infinitely many twin primes is one of the oldest unsolved problems in number theory.
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If the shirts $42 and it's on sale for $15 how much is a shirt now
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Answer:
I think its 27
Step-by-step explanation:
If the vurrent cost is 15 then it took 27 dollars off the original amount
simplify 3 times 2 to the power of 4
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Answer:
3x16
Answer to the equation:
48
Step-by-step explanation:
Everett shoveled 31,798 ounces of gravel from a pile to his driveway. Which best describes this amount?
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Answer:
31,798 describes the amount