Answer:
ive did the math and its r= 4
Step-by-step explanation:
What is the solution to the equation StartFraction m Over m + 4 EndFraction + StartFraction 4 Over 4 minus m EndFraction = StartFraction m squared Over m squared minus 16 EndFraction? m = –4 m = –2 m = 2 m = 4
The solution to the equation is mathematically given as
m=-2
This is further explained below.
What is the solution to the equation?Generally, the equation is mathematically given as
\(\frac{m}{m+4}+\frac{1}{4-m}=\frac{m^2}{m^2-16}\)
Where
The LCM of the denominators are
m^2-16=(m+4)(m-4)
Hence
\((m+4)(m-4)\left(\frac{m}{m+4}+\frac{4}{4-m}\right)=(m+4)(m-4) \cdot \frac{m^2}{m^2-16} \\\)
m(m-4)-4(m+4)=m^2
m^2-4 m-4 m-16=m^2
8 m=-16
m=-2
In conclusion, the solution to the equation is
m=-2
Read more about the equation
https://brainly.com/question/22277991
#SPJ1
Answer:m=-2
Step-by-step explanation:
just answered
1) 22 oz =
Ibs
oz. plz help with this one
Answer:
1.375 lbs
Step-by-step explanation:
2. A student wanted to find the height h of a statue of a pineapple
in Nambour, Australia. She measured the pineapple's shadow
and her own shadow. The student's height is 5 feet 4 inches.
What is the height of the pineapple?
Using proportions, it is found that the height of the pineapple is of 280 inches = 23 ft 4 in.
What is a proportion?A proportion is a fraction of a total amount, and the measures are related using a rule of three.
In this problem, considering that a feet has 12 inches, the measures in inches, and applying the similarity of triangles, the proportions are as follows:
\(\frac{h}{64} = \frac{105}{24}\)
Applying cross multiplication:
24h = 64 x 105
h = 64 x 105/24
h = 280
The height of the pineapple is of 280 inches = 23 ft 4 in.
More can be learned about proportions at https://brainly.com/question/24372153
How to do this problem
Answer: a. y=3 slope = 0
b. x=-4 slope does not exist
Step-by-step explanation:
Adam is a team leader for a packing and moving company. Today, his team packed 72 boxes in 4 hours. What was his team's packing rate, in boxes per hour?
A.
20 boxes per hour
B.
18 boxes per hour
C.
21 boxes per hour
D.
17 boxes per hour
Answer: 18 boxes per hour
Step-by-step explanation:
72 divided by 4 is 18
Calculate: x/y = z/100
y= 137
x = 86.33
What is z?
The value of z is 8633/137 or 63.01, approximately.
Step-by-step explanation:1. Write the expression.\(\frac{x}{y} =\frac{z}{100}\)
2. Multiply both sides of the equaton by "100".\(\frac{x}{y}*100 =\frac{z}{100}*100\\ \\100\frac{x}{y} =z\\ \\z=100\frac{x}{y}\)
3. Substitute "x" and "y" by the given values and calculate "z".\(z=100\frac{(86.33)}{(137)}\\ \\z=\frac{8633}{137}=63.01\)
4. Verify using the exact value of "z".If the calculated value of "z" is correct, then the original equation should return the same value on both sides of the equal symbol (=) when substiting all the variables by their respective value.
\(\frac{86.33}{137} =\frac{\frac{8633}{137}}{100}\\ \\0.63=0.63\)
That's correct!
Hence, the value of z is 8633/137 or 63.01.
-------------------------------------------------------------------------------------------------------
Learn more about solving equations here:
brainly.com/question/28282032
brainly.com/question/28306861
brainly.com/question/28285756
brainly.com/question/28306307
brainly.com/question/29888440
Find the net decimal equivalent for a special at a nail salon if the salon is offering aseries of four discounts: 35%, 20%, 15%, and 10%.Hint: NDE =1- Discount as a decimal)= (1-Discount as a decimal > (1-Discount as a decimal)x (1- Discount as a decimal)0.3978C0.60220.001050.99895
Given:
Discount 1, d1=35%
Discount 2, d2=20%.
Discount 3, d3=15%.
Discount 4, d4=10%.
The net decimal equaivalent can be calculated as,
\(\text{NDE}=(1-\frac{d_1}{100})\times(1-\frac{d_2}{100})\times(1-\frac{d_3}{100})\times(1-\frac{d_4}{100})\)\(\begin{gathered} \text{NDE}=(1-\frac{35_{}}{100})\times(1-\frac{20_{}}{100})\times(1-\frac{15_{}}{100})\times(1-\frac{10_{}}{100}) \\ =(1-0.35)\times(1-0.2)\times(1-0.15)\times(1-.1) \\ =0.65\times0.8\times0.85\times0.9 \\ =0.3978 \end{gathered}\)Therefore, the net decimal equaivalent of discount is 0.3978.
Rollaway Skates
Number
of People
0
1
2
3
4
5
6
7
8
Cost
$0
$5
$10
$15
$20
$25
$30
$35
$40
Wheelie's Skates
and Stuff
Number
of People
0
1
2
3
4
5
6
7
8
Cost
$100
$103
$106
$109
$112
$115
$118
$121
$124
Describe when Rollaway Skates is cheaper and when Wheelie's is cheaper.
Rollaway Skates is cheaper when the number of people is less than or equal to 4. For example, the cost for 2 people at Rollaway Skates is $10, while the cost for 2 people at Wheelie's Skates and Stuff is $106.
Wheelie's Skates and Stuff is cheaper when the number of people is greater than or equal to 5. For example, the cost for 6 people at Rollaway Skates is $30, while the cost for 6 people at Wheelie's Skates and Stuff is $118.
I hope this helps! Do you have any other questions?
Which number doesn't share the same pattern as
2,20, 4,8,300
Find the missing side length in the image below
2. A room is shaped like a trapezoid as shown. 23 ft 28 ft 35 ft (a) What is the area of the room? Use the formula A h1b + b ). Show your work. 2 (b) Carpet costs $8.30 per square foot. How much will it cost to carpet the room? Show your work. (c) Furniture covers 25% of the floor. How many square feet of carpet are covered by furniture? Show your work.
Given:
\(\begin{gathered} \text{ Base }b_1=23\text{ ft, }b_2=35\text{ ft} \\ \text{ Height,}h=28\text{ ft} \end{gathered}\)Required: Area of the room, cost to carpet the room and square feet of carpet are covered by furniture
Explanation:
a) Plug the values into the formula
\(A=\frac{1}{2}h(b_1+b_2)\)gives
\(\begin{gathered} A=\frac{1}{2}\cdot28\cdot(23+35) \\ =812\text{ ft}^2 \end{gathered}\)Area of the room is 812 square feet.
b) Cost of carpet per square foot = $8.30
Cost to carpet the room
\(\begin{gathered} =\text{ Area of the room}\times\text{ Cost of carpet per square foot} \\ =812\times8.30 \\ =6739.6 \end{gathered}\)Cost to carpet the room is 6739.6 dollars.
c) Area of the furniture covers = 25% of Area of the room
\(\begin{gathered} =\frac{25}{100}\cdot812 \\ =203 \end{gathered}\)So, 203 square feet of carpet are covered by furniture.
Final Answer: a) Area of the room is 812 square feet.
b) Cost to carpet the room is 6739.6 dollars.
c) 203 square feet of carpet are covered by furniture.
Find the area of the ñigure. The area is square units
Answer:
yes
Step-by-step explanation:
y + es = yes so do you understand i think i made it pretty clear. if not let me know.
See attached image.
Using the normal distribution, it is found that the mean is of \(\mu = 37.27\) and the standard deviation is of \(\sigma = 5.68\).
Normal Probability DistributionThe z-score of a measure X of a normally distributed variable with mean \(\mu\) and standard deviation \(\sigma\) is given by:
\(Z = \frac{X - \mu}{\sigma}\)
The z-score measures how many standard deviations the measure is above or below the mean. Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.In this problem, we have that the p-value of Z when X = 30 is of 0.1, hence, when X = 30, Z = -1.28, so:
\(Z = \frac{X - \mu}{\sigma}\)
\(-1.28 = \frac{30 - \mu}{\sigma}\)
\(30 - \mu = -1.28\sigma\)
\(\mu = 30 + 1.28\sigma\)
The p-value of Z when X = 32.5 is of 0.2, hence when X = 32.5, Z = -0.84, hence:
\(Z = \frac{X - \mu}{\sigma}\)
\(-0.84 = \frac{32.5 - \mu}{\sigma}\)
\(32.5 - \mu = -0.84\sigma\)
\(\mu = 32.5 + 0.84\sigma\)
Hence:
\(30 + 1.28\sigma = 32.5 + 0.84\sigma\)
\(0.44\sigma = 2.5\)
\(\sigma = \frac{2.5}{0.44}\)
\(\sigma = 5.68\)
\(\mu = 32.5 + 0.84(5.68) = 37.27\)
More can be learned about the normal distribution at https://brainly.com/question/27643290
#SPJ1
please helpp find the volume of each figure
Answer:
3.33
4.33
TVE figures is that
Please solve this
∫ (log(1 + x ^ 2))/((x + 1) ^ 2) dx
The final result of the integral is:
∫ (log(1 + x²) / (x + 1)²) dx = log(x + 1) - 2 (log(x + 1) / x) - 2Li(x) + C,
where Li(x) is the logarithmic integral function and C is the constant of integration.
We have,
To solve the integral ∫ (log(1 + x²) / (x + 1)²) dx, we can use the method of substitution.
Let's substitute u = x + 1, which implies du = dx. Making this substitution, the integral becomes:
∫ (log(1 + (u-1)²) / u²) du.
Expanding the numerator, we have:
∫ (log(1 + u² - 2u + 1) / u²) du
= ∫ (log(u² - 2u + 2) / u²) du.
Now, let's split the logarithm using the properties of logarithms:
∫ (log(u² - 2u + 2) - log(u²)) / u² du
= ∫ (log(u² - 2u + 2) / u²) du - ∫ (log(u²) / u²) du.
We can simplify the second integral:
∫ (log(u²) / u²) du = ∫ (2 log(u) / u²) du.
Using the power rule for integration, we can integrate both terms:
∫ (log(u² - 2u + 2) / u²) du = log(u² - 2u + 2) / u - 2 ∫ (log(u) / u³) du.
Now, let's focus on the second integral:
∫ (log(u) / u³) du.
This integral does not have a simple closed-form solution in terms of elementary functions.
It can be expressed in terms of a special function called the logarithmic integral, denoted as Li(x).
Therefore,
The final result of the integral is:
∫ (log(1 + x²) / (x + 1)²) dx = log(x + 1) - 2 (log(x + 1) / x) - 2Li(x) + C,
where Li(x) is the logarithmic integral function and C is the constant of integration.
Learn more about integrations here:
https://brainly.com/question/30217024
#SPJ1
A convex polyhedron has 18 edges and 4 more vertices than faces. How many faces does the polyhedron have?
Euler’s formula: V + F = E + 2
8
12
14
16
Answer:
8 faces
Step-by-step explanation:
F = # faces
4 + F + F = 18 + 2
2F + 4 = 20
2F = 16
F = 8
Answer:
8
Step-by-step explanation:
got it right on test
Which table represents a linear function? A two column table with four rows. The first column, x, has the entries, 1, 2, 3, 4. The second column, y, has the entries, 3, 7, 11, 15. A two column table with four rows. The first column, x, has the entries, 1, 2, 3, 4. The second column, y, has the entries, 3, 8, 15, 21. A two column table with four rows. The first column, x, has the entries, 1, 2, 3, 4. The second column, y, has the entries, 3, 9, 3, 9. A two column table with four rows. The first column, x, has the entries, 1, 2, 3, 4. The second column, y, has the entries, 3, 9, 27, 81.
Answer:
the the first one
Step-by-step explanation:
One pizza will feed 5 people. How many pizzas are needed for 40 people?
Answer:
8 pizzas
Step-by-step explanation:
you're having a party for 28 people and 1 out of 7 wants a cupcake how many cup cakes was ordered???
Answer:
4
Step-by-step explanation:
7*4 = 28 or 28 divided by 7 = 4
The function G(m) = 49.5m + 89.75 represents the cost of joining the gym in addition to the one time membership fee. The cost, G, is measured in dollars for m months. 1. Find the value of G(6).
Answer:
386.75
Step-by-step explanation:
added in the picture
The cost of joining the gym for 6 months is 386.75.
Given,
The function G(m) = 49.5m + 89.75 represents the cost of joining the gym in addition to the one-time membership fee.
The cost, G, is measured in dollars for m months.
We need to find the value of G(6).
Here,
The one-time membership = 89.75.
Now,
Putting m = 6 months in:
G(m) = 49.5m + 89.75
G(6) = 49.5 x 6 + 89.75
= 297 + 89.75
= 386.75
Thus the cost of joining the gym for 6 months is G(6) = 386.75.
Learn more about finding the value of a function here:
https://brainly.com/question/8822000
#SPJ2
Cho xOz ‘ và yOz ‘ là 2 góc kề bù. Gọi Ot là phân giác của yOz ‘. Biết xOz ‘ = 50◦ , tính xOt
Answer:
ask in English then I can help u
Help would be appreciated !!
Alice and Bob are playing a game where in each round, each of them rolls a fair die independently. If both roll the same number, then the game is repeated. Otherwise the player with the larger number wins. Let X be the number of rounds until the game is decided.
(a) Determine the probability mass function of X.
(b) Compute E[X].
(c) Compute Probability[ Alice win].
(d) Assume that you get paid 10USD for winning in the first round, 1USD for winning in any other round, and nothing otherwise. Compute your expected winnings.
(a) The probability mass function of X will be P(X=n) = 5/(6n)
(b) E[X] =1.2
(c) Probability [ Alice win] will be =0.5
(d) The value of expected winnings will be 4.25
(a) Let 'p' represent the probability of getting the same number on both the dices on a roll of pair of die
And (1-p) = probability of not getting the same number on both the dices on a roll of pair of die
Sample space for the same number appearing on both the dices on a roll of pair of die = {(1,1), (2,2), (3,3), (4,4), (5,5), (6,6)}
As there are a total of 36 outcomes on a roll of pair of dice,
p = 6/36 = 1/6
Let the events be defined as:
Dn : Both Alice and Bob roll the same number on the nth roll
Wn : The game is finished in the nth roll (i.e. Alice and Bob roll different numbers (as the numbers are different, one will be larger))
Then,P(W) = P(W) , n = 1,2,3,4....infinity
Wn takes place when event D takes place in the first (n-1) rolls and Event W takes place in the nth roll
\($\mathrm{P}(\mathrm{W})=\sum P\left(W_n\right), \mathrm{n}=1,2,3,4 \ldots .$\). infinity
And, W_n takes place when
Event D takes place in the first (n-1) rolls and event W takes place in the \($n^{\text {th }}$\) roll
\(P\left(W_n\right)=P\left(D_1\right)^* P\left(D_2\right)^* P\left(D_3\right) \ldots . .{ }^* P\left(D_{n-1}\right) P\left(W_n\right)P\left(D_n\right)\\=(p)P\left(W_n\right)\\=(1-p)\)
Implies
\($$\begin{aligned}& \left.P\left(W_n\right)=(p)^{n-1}\right)^*(1-p) \\& =\left((1 / 6)^{n-1}\right)^*(1-(1 / 6)) \\& =\left((1 / 6)^{n-1}\right)^*(5 / 6) \\& =5 /\left(6^n\right)\end{aligned}$$\)
(b)
\($$\begin{aligned}& \mathrm{E}[\mathrm{X}]=\sum n * P(X=n), \mathrm{n}=1,2,3,4 \ldots . . \text { infinity } \\& =\sum n * \frac{5}{6^n} \\& =5 * \sum n * \frac{1}{6^n}\end{aligned}$$\)
If \($\mathrm{S}=\sum n * \frac{1}{6^n}$\)
Then S is a sum of infinite aritho-geometric series of the form
\($$\sum_{k=1}^{\mathrm{inf}} k * r^k \text {, }$$\)
The sum of which is given as \($S=\frac{r}{(1-r)^2}$\) for 0 < r < 1
Here, r=(1 / 6)
\(\Rightarrow & S=\frac{\frac{1}{6}}{\left(\frac{5}{6}\right)^2} \\& =\frac{6}{25}\)
E[X] = (5) x (6/25) = (6/5)= 1.2
(c) Since the dies are fair, and the outcomes are independent, the probability of each player winning is equal
Therefore,
P(Alice WIn) = P(Bob WIn) = 0.5
(d) If X represent the round in which the game ends, then the probability of us winning in that round
P(W|X=n) = 0.5*P(X=n)
= (0.5)*(5/(6n))
P(W|X=1) = (0.5)*(5/(61)) = (5/12)
P(W|X=2,3,4...) = 0.5 - P(W|X=1) = (1/2) - (5/12) = (1/12)
Leth the variable W represent the winnings
(W|X=1) = 10
(W|X=2,3,4...) = 1
E[W] = P(W|X=1)*(W|X=1) + P(W|X=2,3,4...)*(W|X=2,3,4...)
= (10 x (5/12)) + (1 x (1/12))
= (50/12) + (1/12)= (51/12)= 4.25
For more questions on Probability
https://brainly.com/question/29856487
#SPJ4
h(x) = x^2+6 g(x) = 8x-5
show that hg(x)=19 simplifies to 16x^2 - 20x + 3 = 0
Answer:
h(x)=x²+6 and g(x)=8x-5
prove that hg(x)=19
Step-by-step explanation:
step 1: hog(x)=h[g(x)]
step 2: h(8x-5)
step 3: h(8x-5)= (8x-5)²+6
step 4: (8x-5)(8x-5)+6
step 5: 16x² +15x +6
find the volume of 75° 150° 120° 60° x
The volume of the 4-dimensional pyramid with angles 75°, 150°, 120°, and 60° is 4,500,000°³.
The volume of a 4-dimensional pyramid is given by the formula V = (1/12) * a * b * c * d, where a, b, c, and d are the lengths of the four edges. In this case, a = 75°, b = 150°, c = 120°, and d = 60°. Therefore, the volume of the 4-dimensional pyramid is (1/12) * 75° * 150° * 120° * 60° = 4,500,000°³.
To calculate this volume, first convert the angles from degrees to radians. This is done by multiplying each angle by (π/180). Therefore, a = 75° * (π/180) = (3π/4), b = 150° * (π/180) = (5π/4), c = 120° * (π/180) = (2π), and d = 60° * (π/180) = π/2.
Next, substitute these angles into the formula and multiply them together. (1/12) * (3π/4) * (5π/4) * (2π) * (π/2) = 4,500,000°³. This is the volume of the 4-dimensional pyramid with angles 75°, 150°, 120°, and 60°.
Learn more about 4-dimensional pyramid here:
https://brainly.com/question/14123242
#SPJ1
What will be the result of substituting 2 for x in both expressions below?
+4
x+6-x-2
O Both expressions equal 5 when substituting 2 for x because the expressions are equivalent.
O Both expressions equal 6 when substituting 2 for x because the expressions are equivalent.
O One expression equals 5 when substituting 2 for x, and the other equals 2 because the expressions are not
equivalent.
One expression equals 6 when substituting 2 for x, and the other equals 2 because the expressions are not
equivalent.
Both expressions equal 5 when substituting 2 for x because the expressions are equivalent.
Equivalent Algebraic expressions:Algebra is the branch of mathematics that deals with numbers and values which are represented with letters and symbols.
Sometimes, we do not want to mention a particular number, we can represent the number by a letter or a suitable symbol. This approach is algebraic.
For example, d + d = 2d
This is an example of an algebraic expressionns.
Given the algebraic expressions,
\(\frac{1}{2}x + 4 \\ x + 6 - \frac{1}{2}x - 2\)
Substituting 2 for x in the first expression gives:
(1/2 × 2) + 4
1 + 4
5
Substituting 2 for x in the second expression gives:
2 + 6 - (1/2 ×2) - 2
8 - 1 - 2
8 - 3
5
Both expressions equal 5 when substituting 2 for x because the expressions are equivalent.
Learn more about algebraic expressions from:https://brainly.com/question/395066
#SPJ1
Solve the equation
2/3x-6=9
Answer: 2/3-6=9 is equal to = − 2(2x+6)
Answer:
x = 45 over 2 or 22.5
Step-by-step explanation:
ADD 6 to both sides of the equation SimplifyMultiply 3 by the same value to eliminate fraction denominatorsSimplifyDivide 2 by both sides of the equation by the same termSimplifyPLS I NEED HELP FAST I CANT FAIL THIS EXAM
Solve for x.
−2(x+14)+1=5
Enter your answer as a fraction in simplest form in the box.
x =
Answer:
x=16
Step-by-step explanation:
Equations which are never true:
4.1 Solve : -2 = 0
A a non-zero constant never equals zero.
Solving a Single Variable Equation:
4.2 Solve : x+16 = 0
Subtract 16 from both sides of the equation :
x = -16
One solution was found :
x = -16
Step-by-step explanation:
First distribute: -2x - 28 + 1 = 5
Now simplify: -2x - 27 = 5
Now addition property of equality: -2x = 5 + 27
Now simplify: -2x = 32
Now division property of equality: x = 32/-2
Simplify: x = -16
If you need it as a fraction then you can put - \(\frac{16}{1} \\\)
Hope this helps!
Melanie purchases 6 basketballs and 2 volleyballs for $114. A volleyball cost her $3 less than a basketball. How much did each volleyball cost?
Answer:
a volleyball is $16.5
Step-by-step explanation:
6b+2v= 114
v=b-3
6b+2(b-3)= 114
6b + 2b - 6
8b - 6 = 114
8b = 108
b= 13.5
substitute b in
6(13.5) + 2v = 114
81 + 2v = 114
2v = 33
v= 16.5
What is the square root of 598?
the square root of 598 is 24.4540385