Answer:
1/10
Step-by-step explanation:
chloe is buying a mixed nuts at a grocery store. she can either spend $7.93 on a 15.25 ounce bag or 11.75 on a 25 ounce bag. which is a better buy?
Answer:
25 ounce bag
Step-by-step explanation:
An athlete runs 8 miles in 50 minutes on a treadmill. At this rate: How long will it take the athlete to run 9 miles?
Answer:
56.25min or 56min and 15 sec
Step-by-step explanation:
First find how long it will take to run 1 mile, 6.25 mins, then multiply 6.25 by 9
Can you please do number 9???!! I’m giving out the brainly thingy
Answer:
16
Step-by-step explanation:
not sure i just multiplied and did the math thingy work
Answer:
63
Step-by-step explanation:
[tex](x^{3}-1)(4x+1) = (2^{3} -1)(4*2+1) = (7)(9) = 63[/tex]
3.) Write your answer as an improper fraction.
Find the quotient.
.
5/4 divided by 1 1/12
Answer:
5/4=15/13=1
Step-by-step explanation:
hope that helps
Evaluate the expression when w=-
=-14, x=-10.7, and y=1.2
w-x+y
Х
?
A
Answer:
- 2.1
Step-by-step explanation:
Given
w - x + y ← substitute given values
= - 14 - (- 10.7) + 1.2
= - 14 + 10.7 + 1.2
= - 2.1
Leanna has a rectangular piece of fabric. The fabric is 24 inches wide and 40 inches long. Leanna folds the piece of fabric along its diagonal to form a triangular scarf.
What is the area, in square inches, of the triangular scarf?
Answer:
480 square inches
Step-by-step explanation:
width = base = 24 inches
length = height = 40 inches
area of the triangular scarf = 1/2 * base * height
= 1/2 * 24 * 40
= 480 square inches
Let X1, X1, ..., X64 be a i.i.d. random sample of size 64 from a distribution with probability density function: f(x) = 6x(1 − x), 0 < x < 1 Approximate P(0.45 < X <¯ 0.5). Hint: find µ and σ 2
Answer:
The approximate value of [tex]P(0.45<\bar X<0.50)[/tex] is 0.3686.
Step-by-step explanation:
The pdf of X is:
[tex]f(x) = 6x(1-x), 0 < x < 1[/tex]
Compute the mean as follows:
[tex]\mu=\int\limits^{1}_{0} {x\times 6x(1-x)} \, dx \\\\=\int\limits^{1}_{0} {6x^{2}-6x^{3}} \, dx\\\\=[\frac{6x^{3}}{3}]-[\frac{6x^{4}}{4}]|^{1}_{0}\\\\=2-\frac{3}{2}\\\\=0.50[/tex]
Compute the variance as follows:
[tex]\sigma^{2}=E(X^{2})-(\mu)^{2}[/tex]
[tex]E(X^{2})=\int\limits^{1}_{0} {x^{2}\times 6x(1-x)} \, dx \\\\=\int\limits^{1}_{0} {6x^{3}-6x^{4}} \, dx\\\\=[\frac{6x^{4}}{4}]-[\frac{6x^{5}}{5}]|^{1}_{0}\\\\=\frac{3}{2}-\frac{6}{5}\\\\=0.30[/tex]
[tex]\sigma^{2}=E(X^{2})-(\mu)^{2}\\\\\sigma=\sqrt{E(X^{2})-(\mu)^{2}}\\\\=\sqrt{0.30-(0.50)^{2}}\\\\=0.2236[/tex]
According to the Central Limit Theorem if an unknown population is selected with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from this population with replacement, then the distribution of the sample means will be approximately normally.
Then, the mean of the sample means is given by,
[tex]\mu_{\bar x}=\mu[/tex]
And the standard deviation of the sample means is given by,
[tex]\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}[/tex]
The sample selected is of size n = 64 > 30. Thus a central limit theorem can be applied to approximate the sampling distribution of sample mean.
Compute the value of [tex]P(0.45<\bar X<0.50)[/tex] as follows:
[tex]P(0.45<\bar X<0.50)=P(\frac{0.45-0.50}{0.2236/\sqrt{64}}<\frac{\bar X-\mu_{\bar x}}{\sigma_{\bar x}}<\frac{0.50-0.50}{0.2236/\sqrt{64}})[/tex]
[tex]=P(-1.12<Z<0)\\\\=P(Z<0)-P(Z<-1.12)\\\\=0.50-0.13136\\\\=0.36864\\\\\approx 0.3686[/tex]
Thus, the approximate value of [tex]P(0.45<\bar X<0.50)[/tex] is 0.3686.
I need help asap. Please help.
Answer:
kjhjbhjn h
Step-by-step explanation:
Water is being drained from a container which has the shape of an inverted right circular cone. The container has a radius of 5.00 inches at the top and a height of 6.00 inches. At the instant when the water in the container is 4.00 inches deep, the surface level is falling at a rate of 0.7 in./sec. Find the rate at which water is being drained from the container.
The rate at which water is being drained from the container is;
dV/dt = 24.4 in³/s
I've attached an image showing this inverted cone with the corresponding letters to represent the height and radius.
We are given;
Radius of Cone; R = 5 inches
Height of cone; H = 6 inches
h = 4 inches
Height rate of change; dh/dt = 0.7 in/s
Looking at the image attached, we can use similar triangle property to derive the relationship;
r/R = h/H
Where r is the radius at the instant where dh/dt = 0.7 in/s
Thus;
r/5 = 4/6
r = (5 × 4)/6
r = 3.33 inches
Now, from r/R = h/H
We can write with initial values of cone and differentiate;
r/5 = h/6
6r = 5h
6(dr/dt) = 5(dh/dt)
Since dh/dt = 0.7 in/s
Thus;
dr/dt = (5/6) × 0.7
dr/dt = 0.5833
Volume of cone is given by;
V = ⅓πr²h
We can find the rate at which the rate at which water is being drained from the container using partial differentiation on the volume equation.
Thus;
dV/dt = ⅓π((2rh × dr/dt) + (r² × dh/dt))
Plugging in the relevant values, we have;
dV/dt = ⅓π((2 × 3.33 × 4 × 0.5833) + (3.33² × 0.7))
dV/dt = 24.4 in³/s
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1. Use synthetic division to find the quotient and the remainder. Label both answers.
(x4 - 2x + x + 5) + (x + 1)
8 POINTS WILL BE GIVEN!!
Answer:
x=39 degrees
Step-by-step explanation:
Which of the following is the complete factorization of 18n +60 ?
a.78n
b.2(9n +30)
C.3(6n + 20)
d.6(3η + 10)
e.18(n + 3)
Answer:
answer is d
Step-by-step explanation:
18n can be factored in 60
6 times which would remand 3n+10
The grades of an exam whose mean is 82 and whose standard deviation is 14 are normally distributed. Anyone who scores below 55 will be retested. What percentage does this represent
Answer:
This represents 2.6803%
Step-by-step explanation:
We start by calculating the z-score
Mathematically;
z-score = (x - mean)/SD
here our x is 55
mean = 82
SD = 14
z-score = (55-82)/14
z-score = -1.93
So the probability that a test taker will be retested will be;
P( x < -1.93)
We use the standard normal distribution table for this
P( x < -1.93) = 0.026803
If we convert this to percentage, we have 2.6803%
1/2 divided by 17/10
Answer:
0.71428571428
Step-by-step explanation:
i did the problem and this is what i got
3-5(2x - 3) = 3(4x - 2) + 2
Answer:
x=1
Step-by-step explanation:
-1.9d + 7 + 4.8d + -1.1d - 1.7d
2. el doble de un número aumentado en 7
¡Hola! Creo que tu respuesta es 2x + 7. ¡Espero que esto te ayude! Buena suerte y que tengas un gran día. ❤️✨
Answer:
2x+7 creo
Step-by-step explanation:
The data in which table represents a linear function that has a slope of zero? X -5 -4 -3 -2 -1 у 5 5 5 5 5 w х 1 2 3 4 5 y -5 -4 -3 -2 -1 X -5 -4 -3 -2 y 5 4 3 2
Answer: the answer is choice b
Step-by-step explanation:
The data in the first table represents a linear function that has a slope of zero
Linear equation
A linear equation is in the form:
y = mx + b
where y, x are variables, m is the slope of the line and b is the y intercept.
Slope (m) = change in y / change in x
From the first table, using the point (-5, 5) and (-1, 5), hence:
Slope = (5 - 5)/(-1 - (-5)) = 0
The data in the first table represents a linear function that has a slope of zero
Find out more on Linear equation at: https://brainly.com/question/14323743
f(x) = (x-1)^2 and g(x)= x+1, what is one intersection of the functions
Answer:
Suppose f(x) and g(x) are two functions that take a real number input, and output a real number. Then the intersection points of f(x) and g(x) are those numbers x for which f(x)=g(x) . Sometimes the ... Example 1: ... x+6=−x2x+6=02x=−6x=−3.
T'he dwarf sea horse swims at a rate of 53 feet per hour. Convert this speed to inches per minute.
Answer:
10.6
Step-by-step explanation:
divide the speed value by 5
Sophia has a lemon drink made by mixing 70ml of concentrate with 180ml of water. Tommy has a lemon drink made by mixing 90ml of concentrate with 270ml of water. Who has the strongest drink, sophia or Tommy. Show your working.
Answer: Tommy has More
Step-by-step explanation: just add and you hey who has the highest song trust me if not
What is -2/5×-1 1/4
Answer:
1/2
Step-by-step explanation:
4x+6y=48 where x is the number of cars of vans?
Answer:
-3/2 y+12
or 12- 3y/2
Step-by-step explanation:
the lines are the line for a fraction not dividing
Answer:
the x- intercept shows they can take 12 cars and 0 vans.
the y intercept shows they can take 0 cars and 8 vans.
Step-by-step explanation:
15% of $9 is $_________________.
Answer: $1.35
Step-by-step explanation:
Which of the following lists is ordered from least to greatest?
A. -4 1/2 , -1.6, -1, , 3.2
B. -4 1/2 , -1, -1.6, , 3.2
C. -4 1/2, -1, -1.6, 3.2, 3/4
D. -1, -1.6, -4 1/2 , 3/4 , 3.2
Answer:
the answer is a
Step-by-step explanation:
-4 1/2 is the least number, then negative 1.6, then negative 1, then a positive 3.2
Once a month, Eddie cashes his paycheck at a check cashing service that charges a 1% fee. If Eddie gets paid $500 per month, which of the following will be true?
Answer:
He should be paying $5 monthly.
Step-by-step explanation:
500*0.01=5, I think this was a question from flocabulary, next time, try to also add the answer choices.
The true statement is that the amount of money which Eddie would be charged for each monthly withdrawal is equal to $5.
What is a paycheck?A paycheck refers to a financial document issued to an employee by an employer, as payment for the work done over a specific period of time.
How to calculate the service charge.Since the interest on Eddie's monthly withdrawal is 1% (0.01), it simply means that the service charge would be calculated by multiplying his wages by the interest rate.
Service charge = 500 × 0.01
Service charge = $5.
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#SPJ2
Please help me !!!!!!!
Answer:
x = -3, -2, or 2
Step-by-step explanation:
In the graph, we can look along the line f(x)=6 and see where the function intersects, noting the x-coordinate of each value. We see that the coordinates with a y-value of 6 are (-3, 6), (-2, 6), and (2,6). This means that x can equal either -3, -2, or 2 when f(x)=6.
Zarika earns the same amount each week by walking her neighbor's dogs. When she started this job, she had $300 in her savings account.
The table shows Zarika's savings account balance for her first month of work.
Week 0 1 2 3 4
Balance $300 $550 $800 $1050 $1300
Let x represent the number of weeks Zarika has been working and let y represent Zarika's account balance.
Which equation, expressed in Slope-Intercept Form, represents the amount of money in Zarika's bank account over time?
y=250x+300
y=300x+250
y=300x−250
y=250x−300
Answer
y=250x+300
Step-by-step explanation:
Find the area of the figure shown below and choose the appropriate result.
4 cm
2 cm
5 cm
6 cm
A 34 cm2
B 44 cm
54 cm
D 46 cm
Answer:
the answer is D 46 cm
Step-by-step explanation:
first you need to find the missing side measurements cutting in two separate figures. if one side is 2 you know the other side is also 2 same with the 4 if the top is 4 the bottom is 4 too so now you have the measurements for the first figure now you finder the area applying the formula
A=bxh
A= 4*2=8
second figure you know that one part of the rectangle top is 5 and if you add the 4 of the first figure give you the measurement of the top
5+4=9 so if the top is 9 the bottom is also 9
finally to find the other side you know the side is 6 and since you know one part of the first figure is 2 you need to subtract 6-2=4
A=bxh
A=9*4=28
once you have both you can add it 28+8=46
Fred started a new e-commerce business and borrowed 15000 for 12 years to get the business up and running. The interest is 18000. Find the rate
Answer:
The rate is 6.94 %
Step-by-step explanation:
Given;
Amount borrowed by Fred to start up the e-commerce, P = 15000
time of investment, t = 12 years
interest, I = 18000
The rate is given by the following equation;
P = IRt
R = P / It
where;
R is the rate
P is the principal
I is the interest
t is the time
R = (15000) / (18000 x 12)
R = 0.0694
R = 6.94 %
Therefore, the rate is 6.94 %