Answers
9514 1404 393
Explanation:
638.8 is the result of evaluating the expression ...
[tex]\dfrac{400}{\dfrac{1}{\tan^2{57^\circ}}+\dfrac{1}{\tan^2{68^\circ}}}\approx\dfrac{400}{\dfrac{1}{1.53986^2}+\dfrac{1}{2.47509^2}}=\dfrac{400}{0.42173+0.163237}\\\\\\=\dfrac{400}{0.584967}=683.799\approx\boxed{683.8}[/tex]
Any scientific or graphing calculator or spreadsheet can compute this for you. (You may need to be careful to set Degrees mode for the angles.)
Related Questions
4√6 • √6 = ?
I know this, my brain is just being a turd, someone help please-
Answers
Answer:
This is very simple . you can easily understand. hope it helps.
What is -0.56 as a fraction in simplest form?
-14/25
-5/6
-56/100
-7/10
Answers
6.
For which discriminant is the graph possible?
A. b2 – 4ac = 7
B. b2 – 4ac = 0
C. b2 – 4ac = –12
Answers
Answer:
A. b2 – 4ac = 7
Step-by-step explanation:
Help ASAP I’ll mark you as brainlister
Answers
Answer:
the range is from 6 to -4 (both inclusive)
Step-by-step explanation:
the domain is all values of x for which the function is defined and the range is all values of y for which the function is defined hence the domain is -3 to -11 and the range is 6 to -4
angle A and angle B are supplementary angles.If m angle A=(7x+15 ^ and m angle B=(2x−3) then find the measure of ∠ A.
Answers
Mr. Mad Scientist earns $152, 200 per year. If he has to pay 15% in Income taxes per year how much money does he have after he pays his taxes for the year? *
Answers
Answer:
he have after he pays his taxes for a year 152185
The length and the width of a rectangle are (2x+5) cm and (2x-7) cm respectively. Given that the area of the rectangle is 14cm^2, find its length and width.
Answers
Answer:
Length=13.07 and Breadth=1.07
Step-by-step explanation:
Area=l*b
14=(2x+5)(2x-7)
14=4x^2-4x-35
4x^2-4x-49=0
Using quadratic formula, we have x=(1±5sqrt(2))/2 but as length can't be negative, so x=(1+5*sqrt(2))/2
Length=13.07 and Breadth=1.07
Compute each of the following values for f (x) = 1/x-2. Step by step
a. f(2.5)
b. f(1.75)
c. f (2)
d. Justify your answer for part (C).
Answers
Step-by-step explanation:
subtitle values of x one by one:
a)f(2.5)=1/2.5-2
f(2.5)=1/0.5
f(2.5)=2
b)Now x=1.75
f(1.75)=1/1.75-2
f(1.75)=1/-0.25
f(1.75)=-4
c)x=2
f(2)=1/2-2
f(2)=1/0
f(2)=infinity
d)something divided by zero is equal to infinity that is exteremly large value
Translate each phrase into a variable expression. Use n for the variable. Five more then a number
Answers
Step-by-step explanation:
I only see one phrase (correcting a typo) : "five more than a number".
that is expressed in math by using "n" for the variable "number " :
n + 5
or
5 + n
as additions and multiplications are commutative, they can be written and executed in any sequence. it is always the same result.
if f(X+4) =3x+4 , then find the value of f(4)
please explain it clearly .
Answers
[tex]\\ \sf\longmapsto f(x+4)=3x+4[/tex]
[tex]\\ \sf\longmapsto f(x)=3x+4-4[/tex]
[tex]\\ \sf\longmapsto f(x)=3x[/tex]
Now
[tex]\\ \sf\longmapsto f(4)[/tex]
[tex]\\ \sf\longmapsto 3(4)[/tex]
[tex]\\ \sf\longmapsto 12[/tex]
HELP
Write one equation that has solutions of x = -3 and x = 2.
Answers
Answer:
x = -3
Equation: 2x + 2 = -4
x = 2
Equation: 3x - 3 = 3
Can you guys help me find a flag that has at least one reflection and a translation in it? If not, then two flags that show these transformations.
This is very urgent and I need to get it done soon, whoever is willing to help me I'll mark you as brainliest. Thank you!
Answers
Answer:
The united nations flag the translation can be any of the blue triangles and the reflection if the flag itself as it is symmetrical
Step-by-step explanation:
The united nations flag the translation can be any of blue triangles and the reflection if the flag itself as it is symmetrical.
How does reflection across axis work?When a graph is reflected along an axis, say x axis, then that leads the graph to go just in opposite side of the axis as if we're seeing it in a mirror.
If we study it more, you will find that its symmetric, thus each point is equidistant from the axis of reflection as that of the image of that point.
If you're reflecting a point (x,y) along x axis, then its abscissa will stay same but ordinates will negate. Thus (x,y) turns to (x, -y)
Similarly, if you're reflecting a point (x,y) along y axis, the resultant image of the point will be (-x,y)
Therefore, The united nations flag the translation can be any of blue triangles and the reflection if the flag itself as it is symmetrical.
Learn more about reflection;
https://brainly.com/question/12950057
#SPJ2
Use Distributive property to write the expression without parentheses
Answers
Answer:
-4x + 5y
Step-by-step explanation:
-1/6 x 24 x simplifies to -1 times 4x, which is -4x. -1/6 times -30y simplifies to -1 times -5y, which is 5y.
-4x + 5y
Explanation:
- 1/6(24x - 30y) =
-4x + 5y
Multiply - 1/6 by the numbers in parentheses
how do I identify different terms in an equation
Answers
What are the coordinates of the quadrilateral WXYZ after it is reflected across the y-axis.
Answers
Step-by-step explanation:
the coordinates of the quadrilateral WXYZ after reflected across the y-axis:
W' (3, 4)
X' (-2, 8)
Y' (-4, -4)
Z' (3, -4)
How do I write 125,740,689 in expanded form and in words
Answers
100,000,000 + 20,000,000 + 5,000,000 + 700,000 + 40,000 + 600 + 80 + 9
One hundred twenty five million, seven hundred forty thousand six hundred eighty nine
Step-by-step explanation:
Are the shapes labelled congruent?
please explain what congruent is and how i can find if shapes are congruent
Answers
Answer:
Yes they are. Explanation provided below.
Step-by-step explanation:
Two shapes are congruent when they are the same shape and size. Its obvious that both are rectangles and if we look at the grid, we can see that both rectangles are 2 by 4. Since they both have the same shape and size, they are in fact congruent.
Best of Luck!
Use objects or shapes to describe a a right angle
Answers
Answer:
square because it has 4 90⁰ angles
Find the midpoint of a segment on a coordinated plane if the endpoints are (4,1) and (7,-3)
Answers
Answer:
(5.5, - 1 )
Step-by-step explanation:
The midpoint is the average of the x and y coordinates
midpoint = ( [tex]\frac{4+7}{2}[/tex] , [tex]\frac{1-3}{2}[/tex] ) = ( [tex]\frac{11}{2}[/tex], [tex]\frac{-2}{2}[/tex] ) = (5.5, - 1 )
−5x+4y=3
x=2y−15
what would be the values of x and y
Answers
Answer:
x=9 y=12
Step-by-step explanation:
eqn 1 - x=2y-15
eqn 2- -5x+4y=3
-5(2y-15)+4y=3
-10y+75+4y-3=0
-6y+72=0
y= 12
x=2y-15
x=2(12)-15
x= 9
Substitution,
-5(2y-15) + 4y=3
-10y + 75+ 4y=3
75-3 = 10y - 4y
6y = 72
y. = 72/6
Y= 12
Now find x
X= 2(12) - 15
X= 24 - 15
X= 9
Soo
X= 9; Y= 12
Vie sold 45 raffle ticket. his brother sold twice as many. How many tickets did the sell together?
Answers
Answer:
135 tickets
Step-by-step explanation:
Vie's brother sold twice as many as Vie. So we multiply Vie's tickets by 2 to get the brother's.
VIe's brother sold 45 * 2 = 90 tickets
And all together the two sold
45 + 90 = 135 tickets
Anybody can solve it ??
Answers
Answer:
Calculus can be arranged in 5040 different ways in which the letter C's do not come together.
Step-by-step explanation:
Please mark as brainliest
What is the recursive formula of the geometric sequence?
1∕2, 3∕4, 9∕8, 27∕16, ...
Answers
Step-by-step explanation:
a=1/2, r=9/8÷3/4
=3/2
Tn=ar^n
Answer:
[tex]x_{0} = \frac{1}{2}[/tex]
[tex]x_{n} = x_{n-1} *(\frac{3}{2} )[/tex]
Step-by-step explanation:
ken has 5 lemons and 3 oranges in his shopping trolley and the cost of the fruit is $3.50. Barbie, with 2 lemons and 4 oranges pays $2. 10 for her fruit. how much does each type of fruit cost?
Answers
Answer:
A) 5 L + 3 O = 3.50
B) 2 L + 4 O = 2.10
Multiplying B) by -2.5
B) -5L -10 O = -5.25 then a adding A)
A) 5L + 3 O = 3.50
-7 O = -1.75
Oranges = .25 each
Lemons = .55 each
Step-by-step explanation:
Solve the equation.
3(2x + 7) = - 23 + 14
Answers
Step-by-step explanation:
6x+21=-9
6x=-9-21
x=-30/6
x= -5
Answer:
[tex]3(2x + 7) = - 23 + 14 \\ 6x + 21 = - 9 \\ 6x = - 30 \\ x = \frac{ - 30}{6} \\ x = 5 \\ thnk \: you[/tex]
Anyone know the answer?
Answers
Answer:
Step-by-step explanation:
(21 + 3y) + y = 90
21 + 4y = 90
4y = 69
y = 17.25
x = 21 + 3(17.25)
x = 21 + 51.75
x = 72.75
Answer check:
72.75 + 17.25 = 90
90 = 90 Corrrrrrect !
Explanation:
x = 3y + 21
And x + y = 90° (complementary angle)
Substitute x value in the equation:
3y + 21 + y = 90
4y + 21 = 90
4y = 69
y = 69/4
y = 17.25
x = 3(17.25) + 21
x = 51.75 + 21
x = 72.75
whats the simplest form of expression
Answers
Step-by-step explanation:
[tex] \frac{2b}{ \sqrt{ {b}^{20} } } \\ = \frac{2b}{ {b}^{10} } \\ = \frac{2}{ {b}^{9} } \\ thank \: you[/tex]
2/b^9
here's the answer to the question
MARKING BRAINLIEST !! using the distance formula falculate the perimeter of the triangle below
a. 27.9 units
b. 24.3 units
c. 25.7 units
d. 28.2 units
Answers
Answer:
a
Step-by-step explanation:
i didn't use the distance formula, instead i used the pythagrean theorum. i counted the units for the legs, and made three smaller triangle and solved them to find the lengths of the hypotenuse and the added the three of those together to find the perimiter of the original triangle
When p= 12, t= 2, and s= 5, r= 18. If rvaries directly with p and inversely with the product of sand t, what is the
constant of variation?
Answers
Answer:
15
Brainliest, please!
Step-by-step explanation:
r = kp/(st)
p = 12, t = 2, s = 5, r = 18
18 = k(12)/(2)(5)
18 = 12k/10
12k = 180
k = 15
Twice a number is forty in equation form
Answers
Answer:
2x = 40
Step-by-step explanation:
Let the number be x
Twice means 2 time
2 × x
2x
The product is 40
2x = 40
Step-by-step explanation:
Twice a number is forty
Let the number be x, then
2×x=40
2x=40
x=40/2
x=20