Answer:
Step-by-step explanation:
This is a problem of ratios:
Set the problem up with matching similar side lengths equal:
50/10 = x/12
First simplify the left side:
50/10 = 5
Next, multiply both sides by 12.
We are left with:
x = 12(5)
x = 60
Amadi is three times as old as Chima. The sum of their ages is 24
Answer:
Amadi: 20 years old
Chima : 4 years old
Find the sum 10 - 2 1/4
Answer:
31/4 or 7 3/4
Step-by-step explanation:
10 - 2 1/4
10 - 9/4
(40-9)/4
31/4 or 7 3/4
hope it helps :)
mark brainliest!!
A) Find an equation for the line perpendicular to the tangent line to the curve y=x^3-4x+6 at the point (2,6)
-The equation is y=
b) What is the smallest slope on the curve? At what point on the curve does the curve have this slope?
-The smallest slope on the curve is
-The curve has the smallest slope at the point
c) Find equations for the tangent lines to the curve at the points where the slope of the curve is 8.
Answer:
f(x) = x³ - 4x + 6
f'(x) = 3x² - 4
a) f'(2) = 3(2²) - 4 = 12 - 4 = 8
6 = 8(2) + b
6 = 16 + b
b = -10
y = 8x - 10
b) 3x² - 4 = 0
3x² = 4, so x = ±2/√3 = ±(2/3)√3
= ±1.1547
f(-(2/3)√3) = 9.0792
f((2/3)√3) = 2.9208
c) 3x² - 4 = 8
3x² = 12
x² = 4, so x = ±2
f(-2) = (-2)³ - 4(-2) + 6 = -8 + 8 + 6 = 6
6 = -2(8) + b
6 = -16 + b
b = 22
y = 8x + 22
f(2) = 6
y = 8x - 10
The equation perpendicular to the tangent is y = -1/8x + 25/4
-The smallest slope on the curve is 2.92
The curve has the smallest slope at the point (1.15, 2.92)
The equations at tangent points are y = 8x + 16 and y = 8x - 16
Finding the equation perpendicular to the tangentFrom the question, we have the following parameters that can be used in our computation:
y = x³ - 4x + 6
Differentiate
So, we have
f'(x) = 3x² - 4
The point is (2, 6)
So, we have
f'(2) = 3(2)² - 4
f'(2) = 8
The slope of the perpendicular line is
Slope = -1/8
So, we have
y = -1/8(x - 2) + 6
y = -1/8x + 25/4
The smallest slope on the curveWe have
f'(x) = 3x² - 4
Set to 0
3x² - 4 = 0
Solve for x
x = √[4/3]
x = 1.15
So, we have
Smallest slope = (√[4/3])³ - 4(√[4/3]) + 6
Smallest slope = 2.92
So, the smallest slope is 2.92 at (1.15, 2.92)
The equation of the tangent lineHere, we set f'(x) to 8
3x² - 4 = 8
Solve for x
x = ±2
Calculate y at x = ±2
y = (-2)³ - 4(-2) + 6 = 6: (-2, 0)
y = (2)³ - 4(2) + 6 = 6: (2, 0)
The equations at these points are
y = 8x + 16
y = 8x - 16
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What is the value of x?
07
0 7√2
O
O 14
O 14√/2
45°
7√2
The value of the side length x is equal to 14 using the trigonometric ratio of sine.
What is trigonometric ratios?The trigonometric ratios is concerned with the relationship of an angle of a right-angled triangle to ratios of two side lengths.
The basic trigonometric ratios includes;
sine, cosine and tangent.
sin45 = 7√2/x {opposite/hypotenuse}
√2/2 = 7√2/x {sin45 = √2/2}
x = 7√2 × 2/√2 {cross multiplication}
x = 7 × 2
x = 14
Therefore, the value of the side length x is equal to 14 using the trigonometric ratio of sine.
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Find the lengths of g, h, and j. Round answers to the nearest tenth. (marking brainliest for correct)
Answer:
j=13, g=20.8, h=24
Step-by-step explanation:
The overall shape given and the shape within, are both right triangles. With right triangles, you are allowed to use the pythagorean theorem formula (\(a^{2} + b^{2} = c^{2}\)) in order to solve for some sides. In this case, that would be j and h. The five in the smaller triangle is represented by b and the 12 is the hypotenuse so it is represented by c. When you plug in those numbers in the pythagorean theorem formula, you will find the value of j to be 13. When looking at this, we see that 12 is the second greatest value in the right triangle values that we just found, so we know the the opposing angle for that one will be 60 degrees. The 5's opposing side is therefore 30 degrees. When subtracting 90 and 30, we get 60, so therefore you can use the 30 60 90 formula to find the sides of the bigger triangle. The 60 degrees represents g. This formula will be \(a\sqrt{3}\). The a is 12 since it is the smallest value. So therefore, g is \(12\sqrt{3}\), which is 20.8. Now that we have this side, we can just use the pythagorean theorem formula to find the remaining side. Therefore, h is going to be 24
Help? **WILL GIVE BRAINLIEST**
Answer:
i think it C
Step-by-step explanation:
Will uses 3/4 cup of olive oil
Answer:
sure... i dont understand is there a question??
Step-by-step explanation:
There are 198,000 people in your city, and the population increases by 5% each week. Write equation modeling the number of people that are in your city (let that be P) w weeks from now
What is the equation of the graph below? y=1/2sinx y=1/2cosx y=1/2sin2x
9514 1404 393
Answer:
(d) y = 1/2sin(2x)
Step-by-step explanation:
The sin(x) function will have a maximum value of 1 and a period of 360°. The function plotted is a sine function with a maximum value of 1/2 and a period of 180°.
For a function g(x) = a·f(b·x), the vertical scale factor is 'a', and the horizontal compression factor is 'b'. Our sine function has a vertical scale factor of 1/2, and a horizontal compression of 360/180 = 2, so the transformed function is ...
y = 1/2sin(2x)
Evaluate the expression.
(10.5 - 7) + (4 × 3)
Evaluate the expression.
(10.5 - 7) + (4 × 3)
Answer:-15.5
Explanation:-please look at the attached picture :)
Find the measure of the angles. Write your answer as ONLY a number
Find the angles for Angle A, Angle B, Angle C, Angle D, Angle E
Thank you! Will Mark brainlist.
Answer
A - 30
B - 70
C - 30
D - 120
E - 30
Step-by-step explanation:
This is off the top of my head
HELP HELPPPPPPPPPPPPP PLS
Answer:
15
Step-by-step explanation:
Its Enlargement
27/9 = 3
so 3x5= 15
Scarecrow and the Tin Man are walking in a field toward Emerald City! When they start walking, Scarecrow is 25 meters away and Tin Man is 40 meters away. Scarecrow is walking at a rate of 5 meters per minute and Tin Man is walking at a rate of 10 meters per minute. After how many minutes will Scarecrow and Tin Man be the same distance from Emerald City? What are two equations to solve this problem?
Answer:
3 minutesStep-by-step explanation:
Required equations are:
d = 25 - 5x andd = 40 - 10xSince d is same for both, we substitute d and solve for x:
25 - 5x = 40 - 10x10x - 5x = 40 - 255x = 15x = 3They will be at same distance after 3 minutes
Time be x distance be y
y=25-5xy=40-10xSolve for x
25-5x=40-10x5x=40-255x=15x=3minava walks to the end of her section of trail and back in 90 minutes Luis walks his his section of the trail in 1 3/4 hours. Who walks longer?
Answer:
Luis
Step-by-step explanation:
One hour is 60 minutes total, leaving and extra 30 minutes for Ava, which is half of 60. So, in fraction form, she walked 1 1/2 OR 1 2/4 hours, which is less than Luis. He walked about an hour and 45 minutes total, or 105 minutes.
How do you solve for this?
Answer:
10.
Step-by-step explanation (the required tall of the tree is AQ):
1) ΔBCP ~ ΔBAQ, it means BC/AB=CP/AQ=BP/BQ;
2) BC/AB=CP/AQ, it means 4/20=2/AQ, then AQ=2*20/4=10 [m].
If f(x) = 3x - 1 and g(x) = x + 2, find (f- g)(x).
I can’t find it
Answer:
\((f-g)(x)=2x-3\)
Step-by-step explanation:
We are given the two functions:
\(f(x)=3x-1\text{ and } g(x)=x+2\)
And we want to find:
\((f-g)(x)\)
This is equivalent to:
\(=f(x)-g(x)\)
By substitution:
\(=(3x-1)-(x+2)\)
Simplify. Distribute:
\(=(3x-1)+(-x-2)\)
Rearrange:
\(=(3x-x)+(-1-2)\)
Therefore:
\((f-g)(x)=2x-3\)
write down in terms of n an expression for the nth term of the following sequences 9 11 13 15 17
Answer:
2n+7
Step-by-step explanation:
+2 +2 +2 +2
9 11 13 15 17 so we start with 2n
2 ➡ 9 = +7 6 ➡ 13 = +7
4 ➡ 11 = +7 8 ➡ 15 = +7
So the answer is 2n + 7
what is 10 + 8x = 10003
Answer:
Step-by-step explanation:
10 + 8x =10003
8x = 10003 - 10
8x = 9993
X = 9993 ÷ 9
Step-by-step explanation:
Rearrange = 10 + 8 x =10003
8x + 10 = 10003
subtract both= 8x + 10 = 10003
8x + 10 -10= 10003-10
simplify= subtract the number 8x = 999
Divide the both number = 8x = 9993
8x/8 =993/8
And them simplify it again = x = 9993/8
A LINE PASSES THROUGH THE POINTS. what is the EQUATION OF THE LINE? (2,-4) and (6,10)?
Hey there! :)
Answer:
y = 7/2x - 11
Step-by-step explanation:
Use the slope formula to calculate the slope:
\(m = \frac{\text{rise}}{\text{run}} = \frac{y_2 - y_1}{x_2 - x_1}\)
Plug in the coordinates:
\(m = \frac{10-(-4)}{6-2}\)
Simplify:
\(m= \frac{14}{4}\)
\(m = \frac{7}{2}\)
Slope-intercept form is y = mx + b. Plug in the slope, as well as the coordinates of a point given to solve for b:
10 = 7/2(6) + b
10 = 42/2 + b
10 = 21 + b
10 - 21 = b
b = -11.
Write the equation:
y = 7/2x - 11
Need help please guysssssss
Answer:
C
Step-by-step explanation:
3x+2-x>8
2x+2>8
2x>8-2
2x>6
x>3
Answer:
C
Step-by-step explanation:
Multiply or divide as indicated
x^4•x^-2
Answer:
x^2
Step-by-step explanation:
\(x^4\cdot x^{-2}= \\\\x^{4-2}= \\\\x^2\)
Hope this helps!
Answer:
\(x^{2}\)
Step-by-step explanation:
\(x^4 \times x^{-2}\)
\(x^{4+-2}\)
\(x^{4-2}\)
\(x^{2}\)
help with the question please
El área de un triángulo es de 18 pies cuadrados y la base mide 6 pies. ¿Cuál es la altura del
triángulo en pulgadas?
Answer:
h = 6 feet
Step-by-step explanation:
It is given that,
Area of a triangle, A = 18 sq feet
Base of the triangle, b = 6 feet
We need to find the height of the triangle. The area of a triangle can be given by the formula as follows :
\(A=\dfrac{1}{2}\times b\times h\)
h is height
\(h=\dfrac{2A}{b}\\\\h=\dfrac{2\times 18}{6}\\\\h=6\ \text{feet}\)
So, the height of the triangle is 6 feet.
Johnny takes an Uber to a toy store to buy some slime. Each container of slime costs $5 dollars. The Uber charges a total of $10 dollars. Write an expression that represents Johnny's total cost after buying s containers of slime, including the Uber ride.
Answer:
Step-by-step explanation:
total cost= c
containers of slime=s
c=5s+10
rewrite in standard form
9514 1404 393
Answer:
3x -5y = 4
Step-by-step explanation:
The coefficients are mutually prime integers in standard form. Here, a common factor of 8 can be removed from all of them. The result is ...
3x -5y = 4
Answer:
I think it's this ( 40y+32/24) {See Below For More}
Step-by-step explanation:
Move all constant terms to the right-hand-side
24x=32+40y
Move all constant terms to the right-hand-side
X= 40y+32
24
The Equation Is Solved With:
X 1 = 40y+32
24
Solution Of The Equation:
X1= 40y+32
24
Please need help with one
is y=-5/9x proportional
Answer:
No
Step-by-step explanation:
I don't think it is proportional
Here it is not proportional.
What is proportional?
Proportional relationships are relationships between two variables where their ratios are equivalent.
Another way to think about them is that, in a proportional relationship, one variable is always a constant value time the other.
Here given that,
\(y=-\frac{5}{9x}\)
Here it is not proportional.
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Find the amount of tax and the tax rate. Round to two decimal places.
Cost of item: $71
Selling price: $86.45
Tax amount: $
Tax rate: %
well, the tax amount is simple, it was $71 and it went up to $86.45, that's a 15.45 difference, so that IS the tax amount.
now, if we take 71(origin amount) to be the 100%, what's 15.45 off of it in percentage?
\(\begin{array}{ccll} amount&\%\\ \cline{1-2} 71 & 100\\ 15.45& x \end{array} \implies \cfrac{71}{15.45}~~=~~\cfrac{100}{x} \\\\\\ 71x=1545\implies x=\cfrac{1545}{71}\implies x\approx 21.76\)
v=Xf; speed = wavelength x frequency
f= 1/T; frequency = 1/Period
Problems: 1. The frequency of a wave is 4.0 x 10 Hz. What is its wavelength?
2. A wave with a frequency of 31,200 Hz and travels at 790m/s? What is the wavelength in centimeters?
3. A wave has a wavelength of 25cm and a velocity of 630 m/s, what is the frequency?
Solve. Write answers as an imaginary number. 3x^2=-12
80 POINTS
Answer:
Step-by-step explanation:
3x^2 = -12
divide both side by 3x^2 = -4
Solve the square root.x = ±√-4
this equation has no real solutions
Answer:
x = {- 2i; 2i}-------------------------------
GivenEquation 3x² = 12Solve as below3x² = - 12x² = - 4x = √-4x = ± 2√-1x = ± 2i