Answer:
x = smaller number
3x + 15 = the larger number
x + 3x + 15 = 63
4x = 48
x = 12
3(12) + 15 = 51
so the smaller number is 12 and the larger number is 51
please help I want to learn how to solve this
When talking about the rate of change on a line, we're talking about the slope.
Now, let's use points:
\(\begin{gathered} (4,-10) \\ \text{and} \\ (7,-30) \end{gathered}\)to estimate the slope of the line depicted in the graph.
(We'll get an aproximate value, since the graph is not suited for precise numerical calculations)
This way,
\(m=\frac{-30-(-10)}{7-4}\rightarrow m=\frac{-30+10}{3}\rightarrow m\approx-6.66\)The closest value to the slope we've calculated is:
F. -6.5°C/km
(Answer)
14,3 3.7 ft A right triangle and two of its side lengths are shown in the diagram. Which measurement is closest to the value of x in feet? A. 190.80 ft B. 13.81 ft C. 17 ft D. 14.77 ft
The equation for x by using bthe pythagoras theorem is,
\(\begin{gathered} (3.7)^2+x^2=(14.3)^2 \\ x^2=204.49-13.69 \\ x=\sqrt[]{190.8} \\ =13.81 \end{gathered}\)The value of x is 13.81 ft. Option B is correct.
the circumference of a circle is 60cm what is the area
step by step explanation please
Answer: The area of a circle is 286.37cm².
Step-by-step explanation: The answer to this question can be solved by finding the value of the radius from the circumference and substituting it into the area.
Following are the steps to solve this problem:-
Step 1. The circumference of the circle is 60cm.
The formula for the circumference of a circle is 2\(\pi \\\)r.
Step 2. Calculating the value of radius (r) is 2\(\pi\)r=60 cm.
2x 3.14xr =60cm.
r= 9.55cm
Step 3. Calculate the area of a circle by using the formula \(\pi\)r²
Substituting the valur r( from step 2 ) in the formula
3.14x9.55x9.55= 286.37cm²
Thus, the answer is 286.37cm²
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Find the limit. Use l'Hospital's Rule
lim θ→π/2
1 − sin(θ)/
1 + cos(6θ)
Answer: To apply l'Hospital's Rule, we need to take the derivative of the numerator and denominator separately with respect to θ.
Taking the derivative of the numerator:
d/dθ [1 - sin(θ)] = -cos(θ)
Taking the derivative of the denominator:
d/dθ [1 + cos(6θ)] = -6 sin(6θ)
Now we can apply l'Hospital's Rule by taking the limit of the ratio of the derivatives:
lim θ→π/2 (-cos(θ)) / (-6 sin(6θ))
When θ approaches π/2, cos(θ) approaches 0 and sin(6θ) approaches 1. Therefore, the limit simplifies to:
= 0 / (-6)
= 0
Hence, the limit of (1 - sin(θ)) / (1 + cos(6θ)) as θ approaches π/2 is 0.
A can is 7 inches high and has a radius of 2 inches.
r 2 in
h7 in
Enter the volume, in cubic inches, of the can. Round your answer to the nearest hundredth.
Answer:
the Answer to your question is 87.96
About 87.96
The equation is V=3.14r^2h
Plug the values in, and you're good to go.
find the area of each composite figure
Answer:
48 times 14
Step-by-step explanation:
Calculate the value of p and the value of q
Answer:
q= 20 p= 56
Step-by-step explanation:
A angle is also 62°
Answer:
q = 20 degrees
p = 59 degrees
Step-by-step explanation:
to find q, find all the other interior angles within that shape and subtract it from 360
angle E = 180 - 62 = 118
angle b = 90
angle c = 132
360 - (118 + 90 + 132) = 20
angle q = 20 degrees
to find p, add all the other interior angles within that shape and subtract it from 180
angle e = 62 degrees
angle a and b are the same so, take 62 and subtract it from 180 then divide the answer by 2
180 - 62 = 118
118 / 2 = 59
angle a = 59 degrees
angle p = 59 degrees
NEED HELP ASAP WITH WORK
so I can use the work for the questions later on
The width of the rectangular garden is 21 feet.
What is a rectangle?A rectangle is a plane shape that have pair of opposite sides equal and parallel.
To calculate the width of the rectangle, we use the formula below
Formula:
w = 3P/20...................... Equation 1Where:
w = Width of the rectangleP = Perimeter of the rectangleFrom the question,
Given:
P = 140 feetSubstitute into equation 1
w = 3×140/20w = 21 feetHence, the right option is D. 21 feet.
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plz help ASAP
solve for x in
1. sin x = cos 2x
2. cos 2x = sin 3x
3. sin x = cos x
thx
1. x = π/6 + 2πn/3, for any integer n
2. Is not possible to solve (I think)
3. x = π/4 + πn, for any integer n
judicious selection of the design improves the probability that the observed change in the dependent variable was caused by the manipulation of the independent variable and not by
The judicious selection of the design increases the likelihood that the observed change in the dependent variable is a result of manipulating the independent variable rather than other factors.
When conducting research or experiments, it is crucial to carefully choose the design of the study. By doing so, researchers can minimize the influence of confounding variables and increase the internal validity of their findings. Internal validity refers to the extent to which the observed changes in the dependent variable can be attributed to the manipulation of the independent variable.
A well-designed study incorporates control groups, randomization, counterbalancing, and other techniques to reduce the impact of extraneous variables. This ensures that any observed changes in the dependent variable are more likely to be a direct result of manipulating the independent variable, rather than being influenced by other factors.
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There are 14 boys and 35 girls on a class. What is the ratio of boys to girls in the class?
Answer:
14:35
Step-by-step explanation:
Answer:
14:49 boys 35:49 girls
Step-by-step explanation:
35+14=49
geraldo has a gold chain that is 34 inches long.he cuts it into 2 1/8 - inch-long chains.how many gold chains does geraldo have now
The number of gold chains that Geraldo will have is 16 gold chains.
What is a fraction?A fraction is simply a piece of a whole. The number is represented mathematically as a quotient where the numerator and denominator are split. In a simple fraction, the numerator as well as the denominator are both integers.
Since Geraldo has a gold chain that is 34 inches long and he cuts it into 2 1/8 - inch-long chains.
The number of chains will be:
= 34 ÷ 2 1/8
= 34 / 2.125
= 16
He'll have 16 chains.
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Which best line fits the data? Explain why
Answer:
Step-by-step explanation:
The red line appears to be a good fit for the data because it passes through the center of the data points and follows the general trend of the points reasonably well. It appears to have a positive slope, indicating a positive correlation between the variables represented on the x-axis and y-axis.
Additionally, the red line appears to minimize the overall distance between the data points and the line, which is a common method for determining the line of best fit. This method is often referred to as the least-squares method, and it involves finding the line that minimizes the sum of the squared vertical distances between the data points and the line.
Write One equivalent expression to: 90 + 10x
Answer: \(10(9+x)\)
Step-by-step explanation:
Factor 10 out of 90+10x
Reorder 90 and 10x..
Answer:
An equivalent expression could be:
\(45 + 5x\)
Step-by-step explanation:
You can just divide the equation by 2 or you can multiply it by 2 or 5 or what ever, its gonna be equivalent.
A square prism of height 11 inches has a volume of 539 cubic inches.
a)
Find the length of each side of the square base.
11 in.
Your answer
The length of each side of the square base is 7 inches.
What is the volume?Volume is the measure of the capacity that an object holds.
Formula to find the volume of the object is Volume = Area of a base × Height.
Given that, a square prism of height 11 inches has a volume of 539 cubic inches.
Here, volume =Area of a base × Height
539=Area of a base×11
Area of a base=539/11
Area of a base=49
Here, base of prism is square
We know that, area of a square is a², where a is side
a²=49
a=±√49
a=7 inches
Therefore, the length of each side of the square base is 7 inches.
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Consider the expression 4(8x+5)4(8x+5)4, left parenthesis, 8, x, plus, 5, right parenthesis.
The given expression is 4(8x + 5). This is a product of a coefficient and a binomial expression. In mathematics, a binomial is a polynomial with two terms.
They are represented as ax + b or a + bx or (a + b) etc. Given expression is 4(8x + 5). We can simplify this by applying the distributive property. It is given as follows; The distributive property of multiplication states that a(b + c) = ab + ac To simplify the given expression, we need to multiply the coefficient 4 with each term in the parentheses.
It can be done as follows; 4(8x + 5) = 4*8x + 4*5 We multiply 4 with 8x and 4 with 5 to obtain; 32x + 20 This is the main answer. Therefore, the simplified form of 4(8x + 5) is 32x + 20. To simplify the given expression 4(8x + 5), we can use the distributive property. According to this property, the product of a number with the sum of two or more terms is equal to the sum of the products of that number with each term of the sum. In other words, a(b + c + …) = ab + ac + … In the given expression, 4 is multiplied with the binomial (8x + 5). Hence,
4(8x + 5) = 4*8x + 4*5
= 32x + 20
Hence, the simplified form of 4(8x + 5) is 32x + 20.
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Janelle is in charge of bringing in dry erase markers for everyone in her math group to use to work on a project. She brings 3 markers for each person in her group and 5 extra markers for everyone to share. If Janelle brings in 23 markers in all, which equation represents the information?
Let x represent the number of students in Janelle’s group.
3x = 23 + 5
3x = 23
3x – 5 = 23
3x + 5 = 23
Answer: Choice D
3x+5 = 23
==================================
Explanation:
x = number of students in her group, which is some positive whole number.3x = number of markers for all the students in her group, since each person gets 3 markers.3x+5 = adding on an extra 5 markers to the previous count.That last expression represents the number of markers Janelle brings, which is 23, so that's how we end up with 3x+5 = 23
--------------------
Extra info (optional section):
If you wanted to solve that equation, then subtract 5 from both sides to get 3x = 18. Dividing both sides by 3 leads to x = 6. There are 6 students in her group. Since each gets 3 markers, they'll take 3*6 = 18 markers total. Adding on that additional 5 gets us to 18+5 = 23.
Answer:
Answer D
Step-by-step explanation:
true or false: in a probability model, the sum of the probabilities of all outcomes must equal 1.
Answer:
Step-by-step explanation:
false that is not at all true
Rewrite the equation to describe 4 as a function of 8:
4x + 8y = 512
Then interpret the slope and y-intercept.
Answer:
The steps below show how I transformed the equation in the question into standard form, where the slope and y-intercept is clearest. The slope is -1/2 and the y-intercept is 32.
\(4x + 8y = 512 \\ x + 2y = 64 \\ 2y = - x + 64 \\ y = - \frac{1}{2} x + 32\)
PLEASE ANSWER I AM ON A TIMED TEST
What value of b will cause the system to have an
infinite number of solutions?
y = 6x - b
-3x+ 1/2=-3
b =
A 2
B 4
C 6
D 8
Ellora wants to accumulate $150000.00 in an RRSP by making annual contributions of $5000.00 at the beginning of each year. If interest is 5.5% compounded quarterly, calculate how long she has to make contributions.
a. 18.202125
b. 18.676765
c. 17.455483
d. 17.585794
e. 18.076686
Option A is the correct answer. Ellora wants to accumulate 150,000 in an RRSP by making annual contributions of 5,000 at the beginning of each year. If interest is 5.5% compounded quarterly, calculate how long she has to make contributions.
First, we have to find the interest rate per quarter, which will be
\(5.5% / 4\)= 1.375%.
The formula for the future value of an annuity is:
\(FV = (C * [(1 + r)^n - 1] / r)\),
For Ellora, \(FV = $150,000, C = $5,000, and r = 1.375%.\)
Substituting these values into the formula gives:
\(150,000 = 5,000 * [(1 + 0.01375)^n - 1] / 0.01375\)
Simplifying this equation gives:
\(30 = [(1.01375)^n - 1]\)
We can solve this using logarithms:
\(ln 30 = ln [(1.01375)^n - 1]\)
\(ln 30 = n * ln 1.01375 - ln 1.01375e^(ln 30) / e^(-ln 1.01375) = n18.202125 = n\)
Therefore, it will take Ellora 18.202125 years to accumulate 150,000 in her RRSP through \($5,000\)annual contributions made at the beginning of each year with interest of \(5.5%\) compounded quarterly.
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Now given your positive test result from test 2, what is doctor b's posterior probability for the hypothesis that you do have cogscitis?
The posterior probability of having cogscitis, given a positive test result from Test 2, is 0.0094 or about 0.94%. This indicates that even though you had a positive Test 2 result, the likelihood that you actually have CNS inflammation is still extremely low less than 1%.
With your positive test result from Test 2, we must apply Bayes' theorem to get Doctor B's posterior probability that you have cogscitis, which is:
P(A|B) = P(B|A) * P(A) / P(B)
The following probabilities are known:
P(A) = 0.001 (the population prevalence and previous likelihood of getting cogscitis)
P(B|A) = 0.95 (the possibility of receiving a positive Test 2 result while having cogscitis)
P(B|not A) = 0.10 (the possibility of receiving a positive test result from Test 2 even if you do not have cogscitis)
The law of total probability, which asserts the following, can be used to determine the marginal probability of a positive test result (P(B)):
P(B) = P(B|A) * P(A) + P(B|not A) * P(not A)
where:
P(not A) = 1 - P(A) = 0.999 (the multiplier of the previous probability of contracting cogscitis)
Substituting the values, we get:
P(B) = 0.95 * 0.001 + 0.10 * 0.999 = 0.1008
The posterior probability of developing cogscitis can now be determined, given a positive test result from Test 2:
P(A|B) = P(B|A) * P(A) / P(B)
= 0.95 * 0.001 / 0.1008
= 0.0094
Therefore, the posterior probability of having cogscitis, given a positive test result from Test 2, is 0.0094 or about 0.94%. This indicates that even though you had a positive Test 2 result, the likelihood that you actually have CNS inflammation is still extremely low less than 1%.
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the equation of a line is y + 4 =6x + 13. what is the value of y at the point where the line crosses the y-xais?
Answer:
y = 9
Step-by-step explanation:
When a line crosses the y-axis, it crosses at point (0,y).
Substitute x = 0 in to the line equation we get:
y + 4 = 0 + 13
So y = 13 - 4 = 9
The line crosses the y-axis at point (0,9)
For the system of differential equations
x′(t)=1−ex+2y
y′(t)=−x−4siny
the point (x0,y0)=(0,0) is a critical point.
Expressed as an almost linear system,
x′(t)=ax+by+r(x,y)
y′(t)=cx+dy+s(x,y)
where
a= , b=
c= , d=
and the Jacobian matrix at the critical point (x0,y0) is
J(x0,y0)= ⎡⎣⎢⎢⎢ ⎤⎦⎥⎥⎥
The eigenvalues of this matrix are
λ1= <λ2=
The critical point (x0,y0) is best described as a
saddle
sink / stable node
source / unstable node
center point / ellipses
spiral source
spiral sink
none of these
To express the given system of differential equation as an almost linear system, we need to find the partial derivatives of the given functions with respect to x and y.
∂f/∂x = -ex
∂f/∂y = 2
∂g/∂x = -1
∂g/∂y = -4cosy
Now, substituting these values in the general form of an almost linear system,
x′(t) = ax + by + r(x,y)
y′(t) = cx + dy + s(x,y)
we get,
x′(t) = -ex + 2y
y′(t) = -x - 4cosy
So,
a = -e, b = 2, c = -1, d = 0
At the critical point (0,0), the Jacobian matrix is
J(0,0) = ⎡⎣⎢⎢⎢-1 2⎤⎦⎥⎥⎥
The eigenvalues of this matrix can be found by solving the characteristic equation,
det(J - λI) = 0
where I is the identity matrix of the same size as J.
det ⎡⎣⎢⎢⎢-1-λ 2⎤⎦⎥⎥⎥ = (-1-λ)(-λ) - 2(2) = λ^2 + λ - 4
Using the quadratic formula, we get the eigenvalues as
λ1 = (-1 + sqrt(17))/2 ≈ 0.56
λ2 = (-1 - sqrt(17))/2 ≈ -2.56
Since the eigenvalues have opposite signs, the critical point is a saddle.
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Please help I need to finish this
Correct I’ll give brainlist no links or I’ll report
Answer:
y = 8x - 64
Step-by-step explanation:
Start with y = mx + b, the slope-intercept equation. Replace m with 8, x with 7 and y with -8:
-8 = 8(7) + b, or
-8 - 56 + b, or
b = -64
Then the desired equation is
y = 8x - 64
Erin has one coin and Jack has one coin.
The total amount of their two coins is less than 50p.
Assuming that each outcome is equally likely, work
out the probability that exactly one of the coins is a
10p piece.
Give your answer as a fraction in its simplest form.
The probability that exactly one of the coins is a 10p piece is 1/2.
What is the probability that exactly one of the coin is a 10p piece?To find the probability that exactly one of the coins is a 10p piece, we can consider the possible outcomes.
There are two coins, and each coin can be either a 10p piece or a non-10p piece. Let's consider the four possible outcomes:
1. Erin's coin is a 10p piece, and Jack's coin is a non-10p piece.
2. Erin's coin is a non-10p piece, and Jack's coin is a 10p piece.
3. Both Erin's and Jack's coins are 10p pieces.
4. Both Erin's and Jack's coins are non-10p pieces.
Since the total amount of the two coins is less than 50p, we can eliminate the third possibility (both coins being 10p pieces).
Now, let's calculate the probability for each of the remaining possibilities:
1. Erin's coin is a 10p piece, and Jack's coin is a non-10p piece:
The probability of Erin having a 10p piece is 1/2, and the probability of Jack having a non-10p piece is also 1/2. Therefore, the probability of this outcome is (1/2) * (1/2) = 1/4.
2. Erin's coin is a non-10p piece, and Jack's coin is a 10p piece:
This is the same as the previous case, so the probability is also 1/4.
3. Both Erin's and Jack's coins are non-10p pieces:
The probability of Erin having a non-10p piece is 1/2, and the probability of Jack having a non-10p piece is also 1/2. Therefore, the probability of this outcome is (1/2) * (1/2) = 1/4.
Now, we sum up the probabilities of the two cases where exactly one of the coins is a 10p piece:
1/4 + 1/4 = 2/4 = 1/2.
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Guys I need help on all three please
Answer:
graph 1 proportional
graph 2&3 is non proportional
i think
What is this equation called y=mx+b ?
(got another one removed)
Answer: it is called the slope intercept
Answer: Slope-intercept form
Step-by-step explanation:
The equation format of y = mx + b is slope-intercept.
-> m is the slope, or the steepness of the line
-> b is the y-intercept, or where the line intersects the y-axis.
I need help what is the missing angle
Answer:
Step-by-step explanation:
It is very simple
118 + 90 + 70 + x = 360
x + 278 = 360
x = 82