Answer:
0712....,.......................
Question in the picture
I will find x, so 4x-4=180, so 4x=184, so x=46
Sorry if i answered wrong I don't understand what it is asking for.
PLEASEE HELPP ASAP!
Consider a right triangle which is
changing shape in the following
way. The horizontal leg is
increasing at the rate of 11 in/min
and the vertical leg is decreasing
at the rate of 5 in/min. At what rate <
is the hypotenuse changing in
in/min when the horizontal leg is 12
inches and the vertical leg is 9
inches?
Answer:
Step-by-step explanation:
GIVEN: dx / dt=5 in./min. and dy/ dt=−6 in./min.
FIND: dz/ dt when x=12 in. and y=9 in.
Use the Pythagorean Theorem to get the equation
x2+y2=z2
Now differentiate this equation with repect to time t getting
D{x2+y2}=D{z2} ⟶
2xdxdt+2ydydt=2zdzdt ⟶
(Multiply both sides of the equation by 1/2.)
x dx/ dt+y dy/ dt= z dz/ dt (DE)
Now let x=12 and y=9 and solve for z using the Pythagorean Theorem.
tex2html_wrap_inline125
122+92=z2 ⟶ z2=225 ⟶ z=15
Plug in all given rates and values to the equation (DE) getting
(12)(5)+(9)(−6)=(15)dz/ dt ⟶
6=15dzdt ⟶
dz/ dt=615=25 in/min.
Hope this answer helps you :)
Have a great day
Mark brainliest
What is the total price of 3.2 pounds of apples at 80¢ per pound?
Answer:
$2.56
Step-by-step explanation:
80x3 = 240
80x.2=16
240+12=256
$2.56
f(x)=3^x+1 and g(x) = 2x-4, find f(2) - g(-1)
Answer:
16
Step-by-step explanation:
3^x +1 = f(X)
2x-4 = g(x)
find f(2)-g(-1)
we substitute in function f(X) by value (2), and in function g(X) by value (-1)
1. 3^x +1 becomes 3^2+1 =9+1=10
2. 2(-1)-4= -2-4=-6
then f(2)-g(-1)
= 10-(-6) =10+6=16
Given that 8 tan = 3 cos
a) Show that the above equation can be rewritten in the form 3 sin2 + 8 sin − 3 = 0
b) Hence solve, for 0 ≤ ≤ 90, the equation 8 tan 2 = 3 cos 2, giving your answers to 2 decimal places.
The only solution for the equation 8 tan^2 θ = 3 cos^2 θ in the given Range is θ ≈ 19.47 degrees.
a) We are given the equation 8 tan θ = 3 cos θ.
Dividing both sides of the equation by cos θ, we have:
8 tan θ / cos θ = 3
Using the identity tan θ = sin θ / cos θ, we can substitute it into the equation:
8 (sin θ / cos θ) / cos θ = 3
Simplifying further, we get:
8 sin θ / cos^2 θ = 3
Now, multiplying both sides of the equation by cos^2 θ, we have:
8 sin θ = 3 cos^2 θ
Using the identity cos^2 θ = 1 - sin^2 θ, we can substitute it into the equation:
8 sin θ = 3(1 - sin^2 θ)
Expanding the equation, we get:
8 sin θ = 3 - 3 sin^2 θ
Rearranging the terms, we have:
3 sin^2 θ + 8 sin θ - 3 = 0
Therefore, we have successfully shown that the equation can be rewritten in the form 3 sin^2 θ + 8 sin θ - 3 = 0.
b) Now, let's solve the equation 3 sin^2 θ + 8 sin θ - 3 = 0.
To solve the quadratic equation, we can use factoring, quadratic formula, or other appropriate methods.
In this case, the equation factors as:
(3 sin θ - 1)(sin θ + 3) = 0
Setting each factor equal to zero, we have two equations:
3 sin θ - 1 = 0 or sin θ + 3 = 0
For the first equation, solving for sin θ, we get:
3 sin θ = 1
sin θ = 1/3
Taking the inverse sine (sin^-1) of both sides, we find:
θ = sin^-1(1/3) ≈ 19.47 degrees (to 2 decimal places)
For the second equation, solving for sin θ, we have:
sin θ = -3
Since the range of sine is between -1 and 1, there are no solutions for this equation in the given range (0 ≤ θ ≤ 90 degrees).
Therefore, the only solution for the equation 8 tan^2 θ = 3 cos^2 θ in the given range is θ ≈ 19.47 degrees.
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What is the y-intercept of the graph shown? Will give the brainiest answer
Answer:
(0, 4)
Step-by-step explanation:
The y-intercept is defined as the point where the line intersects the y-axis. All we need to do is find where the line intersects the y-axis.
(0, 4) is the answer.
Solve the equation.
7h-5(3h-8)=-72
Answer:
4 hours
Step-by-step explanation:
7h - 5(3h - 8) = -72 Distribute the -5
7h - 5(3h )(-5)(-8) = -72 A negative times a negative is a positive
7h - 15h + 40 = -72 Combine like terms
-8h + 40 = -72 Subtract 40 from both sides
-8h +40 - 40 = -72 - 40
-8h = -32 Divide both sides by -8
\(\frac{-8h}{-8}\) = \(\frac{-32}{-8}\)
h = 4
You can make 8 pancakes with 5g of butter. How much butter do you need for 12 pancakes.
i will love you forever i just need help
Answer:
then love me more also, i bet the answer is pi
Step-by-step explanation:
2 divided by 5 minus 5
Answer:
-4.6
Step-by-step explanation:
Is 3pi/4pi a rational number?
Answer:No
Step-by-step explanation:
Pi is irrational
How do you work these out with explanation please x
Answer:
a) Multiply 2 with the terms in the brackets;
2x + 6 = x - 4
Like previously, move all x terms to one side of the equation;
2x - x = -4 -6
x = -10
b) Multiply 2 with the terms in the brackets;
20x - 8 = 18x + 6
Move all x terms to one side of the equation;
20x - 18x = 6 +8
2x = 14
x = 14/2
x = 7
Hope this helps :)
13) Timmy went to the shooting range and went through 225 rounds. He put 100 rounds within 4 inches
of the bullseye and 43 rounds in the bullseye. What is his accuracy with in 4 inches and what is his
accuracy within the bullseye?
Answer
25/1 and 43/125
Step-by-step explanation:
Indicate which property is illustrated in step 1
Answer:
Step-by-step explanation:
communicative because you moved the three to the other side
If η. is an even positive integer, the double factorial notation represents the product of all the even integers from to η. For example 8! = 2 . 4. 6. 8 . What is the units digit of the following sum?
a. 0
b. 2
c. 4
d. 6
e. 8
The units digit of the double factorial notation is the units digit of the product of all the even integers from 2 to 8, which is 8! The units digit of 8! is 8, so the answer is 8.
What is meant by the term factorials?Factorials are mathematical operations symbolized by an exclamation point following a number. To find the factorial of a number, such as 5, write it down as 5! then multiply it by all the positive integers less than 5, including 1. Therefore, 5! is equivalent to 5 x 4 x 3 x 2 x 1, or 120. Factorials are frequently employed in mathematical equations and computations, especially in probability and statistics, where they are used to calculate the number of combinations or permutations that may be made from a given collection of numbers or variables. For example, if you had 5 distinct objects and want to determine how many various combinations , you used the factorial of 5.
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Pls help I need answer
The calculation involves substituting the value 9 into each function, which yields f(9) = 729. Then, substituting f(9) into h(x), we find h(f(9)) = 27. Finally, substituting h(f(9)) into g(x), we obtain g(h(f(9))) = 3\(\sqrt{3}\).
To find the value of g(h(f(9))), we need to substitute the value of 9 into each function and evaluate the composition step by step.
First, let's find f(9). According to the given function f(x) = \(x^3\), we substitute x = 9:
f(9) = \(9^3\) = 729
Next, we substitute f(9) into h(x) = √(x):
h(f(9)) = h(729)
Now, we evaluate h(729) by substituting x = 729 into the function:
h(f(9)) = \(\sqrt{729}\) = 27
Finally, we substitute h(f(9)) = 27 into g(x) = \(\sqrt{x}\):
g(h(f(9))) = \(g(27)\)
Evaluating g(27) by substituting x = 27 into the function:
g(h(f(9))) =(\(\sqrt{27\)) = 3\(\sqrt{3}\)
Therefore, g(h(f(9))) is equal to 3\(\sqrt{3}\), which means the square root of 27 can be simplified to 3 times the square root of 3.
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What is the cost of a pair of shoes if they retail for $18.50, have a tax of 6%, and you have a coupon for 20% off after taxes
Answer:
$15.69
Step-by-step explanation:
multiply the retail price by 1.06 to get the price after taxes.
find the discounted price by multiplying the price after taxes(19.61) by 0.8 since it is 20% off to get the answer
Angie painted 1/20 of a fence in 1/2 an hour. How long will it take Angie to paint one fence
Answer: 30 minute
Step-by-step explanation:60 diviser par 2
Answer:24 hours
Step-by-step explanation: because 1/2 times 20 will give you 24
what is the sum of 4 and 5
Answer:
The answer is 9 because 4+5=9
Step-by-step explanation:
Here is Takeshi's work determining a third point on the graph of an exponential function, `h(x)`.
Explain why the work is incorrect.
Answer:
Step-by-step explanation:
Let h(x) = y
The exponentail function is of the form :
\(y = ab^x\)
We have :
\(y_{_1} = ab^{x_{_1}}\\y_{_2} = ab^{x_{_2}}\\\\\implies \frac{y_{_1}}{y_{_2}} = \frac{ab^{x_{1}}}{ab^{x_{2}}} \\\\\implies \frac{y_{_1}}{y_{_2}} = \frac{b^{x_{1}}}{b^{x_{2}}} \\\\\implies \frac{y_{_1}}{y_{_2}} = b^{(x_1-x_2)}\)
Given points : (4, 9) and (5, 34.2)
We have:
\(\frac{34.2}{9} = b^{(5-4)}\\\\\implies 3.8 = b\)
Writing the equation with x, y and b:
\(y = ab^x\\\\\implies 9 = a(3.8^4)\\\\a = \frac{9}{3.8^4} \\\\a = 0.043\)
a = 0.043
b = 3.8
When x = 6, y will be:
\(y = (0.043)(3.8^6)\\\\y = 128.47\)
This is not the y value in the question y = 59.4
Therefore (6, 59.4) does not lie on the graph h(x)
Find legit BD
I need help for my assignment
Answer:
BD = 4
Step-by-step explanation:
∆BAD is congruent to ∆CAD based on the AAS Congruence Theorem.
Therefore:
BD = CD
3x + 1 = 5x - 1 (substitution)
Collect like terms
3x - 5x = -1 - 1
-2x = -2
Divide both sides by -2
x = -2/-2
x = 1
✔️BD = 3x + 1
Plug in the value of x
BD = 3(1) + 1
BD = 3 + 1
BD = 4
The circumference of a circle that has a radius of 70 feet is most nearly
A. 220 feet.
B. 440 feet.
C. 660 feet.
D. 690 feet.
Answer:
B 440 feet
Step-by-step explanation:
C = 2(3.14)r
= 2(3.14)70 feet
= 6.28(70 feet)
= 439.6
439.6 is approximate to 440 feet
In how many ways can 13 people be divided into four groups with 3, 6, 2 and 2 people respectively?
Answer:
6227020800
Step-by-step explanation:
There are 13 ways to choose the first person in the first group, 12 ways to choose the second person in the first group and so on until we get 1 way to choose the second person in the last group so the answer is 13 * 12 * 11 * ... * 3 * 2 * 1 = 13! = 6227020800.
Connor has already written 15 pages of his new young adult novel and he will write more today. He expects to write 2.5 pages per hour
Write an equation that shows the relationship between the number of hours Connor spends writing today,X, and the total number of pages, y.
The required equation is y = 2.5x + 15 which shows the relationship between the number of hours Connor spends writing today,X, and the total number of pages.
What is the equation?The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.
We have been given that Connor has already written 15 pages of his new young adult novel and he will write more today. He expects to write 2.5 pages per hour
Let x represents the number of hours Connor spends writing today and y represents the total number of pages,
According to the given situation, we can write the equation as:
⇒ y = 2.5x + 15
Therefore, the required equation is y = 2.5x + 15.
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Westside Middle School sell raffle tickets as a fundraiser the tickets were priced at 5 for $20 how many tickets did school sale is it broughtin a profit of 2500?
Answer:
$12.500
Step-by-step explanation:
Can someone help me please
Answer:
x=9 since 2x9=18 and 18-8=10
-57 = 16 + 5m
What does m=
Answer:
m = -14.6Step-by-step explanation:
Given Question:To find the value of mGiven Equation:-57 = 16 + 5mSolution:=> -57 = 16 + 5m
=> 16 + 5m = -57
(On subtracting -16 from both sides)=> 16 + 5m - 16 = -57 - 16
(On Simplification)=> 5m = - 73
(On dividing both sides with 5)\( = > \frac{5m}{5} = \frac{ - 73}{5} \)
(On Simplification)=> m = -14.6
Hence, required value of m = -14.6 (Ans)
Answer:
_14.6
Step-by-step explanation:
-57 = 16 + 5m
-57 - 16 = 5m
-73 = 5m
÷5] - 14.6 = m
Nb.... M = - 14.6
Find the coordinates of the point on the unit circle at an angle of 225∘.
Give your answer in the form (x,y) and leave any fractions in fraction form.
The unit circle has the co-ordinates (-√2/2, -√2/2)
What are trigonometric functions?In mathematics, trigonometric functions are real functions that relate an angle of a right-angled triangle to ratios of two side lengths. The six trigonometric functions are Sine, Cosine, Tangent, Secant, Cosecant, and Cotangent.
Given here: The unit circle and the point makes an angle of 225
we know the co-ordinates of any point on the unit circle is given by
x=cost and y=sint where t is the angle that line passing through the origin containing the point makes with x-axis
Thus x=cos225
=-√2/2
and y=sin225
=-√2/2
Hence, The required point is given by co-ordinates (-√2/2, -√2/2)
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Using the diagram to the right, which statement do you KNOW is true (E is between J and N)?
A JE = EN
B. JN = EJ - NU
C. JE-EN = JN D. JN + JE = EN
Answer:
5. Answer C is right for sure.
6. JN=JE+EN
Step-by-step explanation:
list the angles of ABC in order from smallest to largest
The size of a triangle side is proportional to its opposite angle. The largest side is opposite to the largest angle while the smallest side is opposite to the smallest angle.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
The size of a triangle side is proportional to its opposite angle. The largest side is opposite to the largest angle while the smallest side is opposite to the smallest angle.
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