Answer:
C).21
Step-by-step explanation:
Find the Cartesian equation of the curve with parametric equations x = 2 sec(t) and y = 3 tan(t) for t ∈ π/2 , 3π/2, and describe the curve.
Answer:
4y^2 - 9x^2 = -36
Step-by-step explanation:
x = 2 sec t
y = 3 tan t
x^2 = 4 sec^2 t
y^2 = 9 tan^2 t
Now sec^2t = 1 + tan^2 t so we have:
4(1 + tan^2 t) + 9 tan^2 t = x^2 + y^2
4 + 13 tan^2 t = x^2 + y^2
13 tan^2 t = x^2 + y^2/ - 4
tan^2 t = x^2/13 + y^2/13 - 4/13
But , from the second equation tan t = y/3 so tan^2 t = y^2/9, so:
y^2/9 = x^2/13 + y^2/13 - 4/13
LCM of 9 and 13 is 117 so multiply thru by 117:
13y^2 = 9y^2 + 9x^2- 36
4y^2 - 9x^2 = -36
a number t divided by 17 equals the opposite of three
t/17=-3
---
I have no idea how to explain so...
hope it helps?
Answer:
Well the opposite of three (my guess) would be -3 so you multiply 17 by -3 and that is -51 (-51÷17=-3) so the number is -51
Step-by-step explanation:
Last week, Jen started a new job at the mall. She worked 36 hours over 4 workdays of equal length. She makes $8 an hour. How much did she make for each day of work?
Answer:
1652
Step-by-step explanation:
because 36x4=144 and 144x8=1652
Answer:
1652
Step-by-step explanation:
Travis, the manager at a small music store, tracked one week of CD sales of different types of music. The bar graph shown here provides the number of CDs sold of each type of music. Travis predicts that the next CD sold will be pop music. Which statement justifies Travis's prediction? A) Every person bought a pop CD. B) More than half of all CD sales were pop CDs. C) People bought rock CDs just as much as pop CDs. D) People bought pop CDs more than any other type of CD.
aa aa a a aaaaaa a a aa a saa a
1. Point A(3,7), Scale Factor (k) = 2
Find the Point A'(
Answer:
(6,14)
Step-by-step explanation:
(a) Find the product of: cube root 2 × six root 5
Answer:
I BELIVE IT IS -2
Step-by-step explanation:
I need help trying to find the trig function for this problem
9514 1404 393
Answer:
x ≈ 136.7 ft
Step-by-step explanation:
As you have marked, the relevant sides are the adjacent side and the hypotenuse. The mnemonic SOH CAH TOA reminds you ...
Cos = Adjacent/Hypotenuse
For this triangle, that means ...
cos(43°) = (100 ft)/x
x = (100 ft)/cos(43°) . . . . . . . . . . multiply both sides by x/cos(43°)
x ≈ 136.73 ft
The length x is about 136.7 feet.
What is the quotient of 1.876 x 10^2 and 6.7 x 10^2 expressed in scientific notation?
Answer:
345600000000 and 670
Step-by-step explanation:
would the answer be 36?
The ratio of girls to boys is 12 girls to 20 boys.
If there are 3 girls, how many boys are there?
There are
boys.
Next Question
Answer:
5
Step-by-step explanation:
ratio = 12:20
12/4 = 3
so we do
20/4 = 5
there are 5 boys
Another way, we can write it as a fraction
12/20 = 3/x
12x = 60
x = 5
Answer:
5 boys
Step-by-step explanation:
Write it like this:
3/X=12/20
Then, cross multiply.
3*20=60
X*12=12X
12X=60
Divide both sides by 12
60/12=5
X=5
The unknown number is 5
If there are 3 girls, then there are 5 boys.
3. Jaselle earned $80.00 raking leaves. This is 8 dollars more than 4 times the amount that Dillon
earned. How much did Dillon earn?
(25 Points)
Answer:
Step-by-step explanation:
So, Jaselle has $80.00.
This is 8 dollars more than 4 times the amount that Dillon
earned.
$80.00 - 8.00 = $72.00
4 Times average amount = $72.00
Average (begining amount) = $18.00
I HOPE THIS HELPS :3
Give the sum in simplest form: 2x/w + y/w
Answer:
[tex]\frac{2x+y}{w}[/tex]
Which of
the following describes the polynomial function?
Answer:
can you put an illustration or picture for me to understand what your saying?.
Step-by-step explanation:
The function g is defined by g(x) = 3x - 5.
Find g (2x).
ANSWER FAST ITS DUE IN AN HOURRRRRR
Find the perimeter of the rectangle below. Write the expression two
different ways by applying the distributive property.
Show the work pls
Jason has 120 pieces of art. He puts 5% of them in an art show. How many pieces of art does Jason put in the art show?
Answer:
6
Step-by-step explanation:
5 x 120/100=6
Mr. Levy needs to purchase paper towels. The regular price of the paper towels is $6.99 but they are on sale for 40% off. He also has a coupon for an extra 20% off. What percentage does Mr. Levy pay of the original cost of the paper towels?
Answer:
Mr. Levy will pay 40% of the price, which is $2.80.
Step-by-step explanation:
Hope this helps!
There are eight 4th grader class going on a field trip there are 20 students in each class and 22 adults who plan to go each bus will carry 48 people how many buses are needed
Answer:
Hard
Step-by-step explanation:
I don't know sorry
Answer:
8x20+22
160+22
182.
48x4= 192 (closest to 182) since you can’t have a remainder of kids.
(I’m in 6th grade so I hope I helped and didn’t get it wrong)
So the answer is 4 or 5 busses.
6. There are 785 students in the senior class. If there are 77 more females in
the class than males, how many male and female seniors are there?
... please solve this using if systems of equations
Answer:
there are 431 females and 354 males in the class
Step-by-step explanation:
Let the number of females student in the class be x
Let the males by y
If there are 785 students in the senior class, then;
x+y = 785 .... 1
If there are 77 more females in the class than males, then;
x = y+77 ....2
Substitute 2 into 1
y+77+y = 785
2y = 785 - 77
2y = 708
y = 708/2
y = 354
Since x = 785 - y
x = 785 - 354
x = 431
Hence there are 431 females and 354 males in the class
Angles A and B are complementary. What is mB if mA = 5°?
A. mB = 175°
B. mB = 90°
C. mB = 85°
D. mB = 45°
Answer:
c. mB= 85 degrees
Step-by-step explanation:
complementary equals to 90 degrees. so 90-5=85
Answer:
The answer is C.
Step-by-step explanation:
i will mark brainiest if you explain please
Answer:
c,or d I think please be right
Look this function: f(x) = x2 - 4x - 21. Type the correct answer in each box to complete the statement. Write the points as ordered pairs, (a,b).
Answer:
When graphed, the function will have a y-intercept at
(0,-21)
and a vertex at
(2,-25)
Step-by-step explanation:
Olivia has a 20 meter-long fence that she plans to use to enclose a rectangular garden of width w. The fencing will be placed around all four sides of the garden so that its area is 18.75 square meters. Write an equation in terms of w that models that situation.
Answer:
Step-by-step explanation:
Length of garden = 10-w
Area = (10-w)w = 18.75
w² - 10w + 18.75 = 0
Answer is [tex]w^{2} - 10w + 18.75 = 0[/tex]
Rectangle Formulas:
Area of the Rectangle (A) = length x breadth.
Perimeter of rectangle (P) = 2 x (length + breadth)
(Given),
A = 18.75square meters
P = 20 meter
Let's length be l and width be w.
P = 2 (l + w)
20 = 2(l + w)
l + w = 10
l = 10 - w ----( 1 )
Now, A = l x w
18.75 = (10 - w) x w
18.75 = 10w - [tex]w^{2}[/tex]
[tex]w^{2} - 10w + 18.75 = 0[/tex]
Learn more about Rectangle here:
https://brainly.com/question/3861239?referrer=searchResults
#SPJ2
indentify the measure of angle 2. ( write the number only.)
Answer:
72°
Step-by-step explanation:
here's your solution
=> we know angle A + angle S = 2
=> angle 2 = 30° + 42°
=> 72°
hope it helps
An aquarium is shown below. The directions state that the water should be exactly three inches below the top of the aquarium. What is the volume of the water in the tank?
Answer:1056
Step-by-step explanation:
There is a 52% chance that a player will win a certain carnival game. Which statement describes the likelihood that a player will win the game?
A The player will definitely win the game.
B It is likely that the player will win the game.
C It is unlikely that the player will win the game.
D It is neither likely nor unlikely that the player will win the game.
solve simultaneously
[tex] {2}^{x} + {3}^{y} = 9 \\ {2}^{x + 2} - {3}^{y + 1} = 8[/tex]
Answer:
I hope this helps you :)
Answer:
2x+3y=9
2x+2-3y+1=8
2x-3y=8
2x-3y+3y=8+3y
2x=8+3y
2x=8+3y
2 2
x=8+3y
2
2(x) +3y=9
2* (8+3y)/2 +3y=9
(16+6y)/2)+3y=9
2*(16+6y)/2)+3y=9
16+6y+6y=18
6y+6y=18-16
12y=2
12y = 2
12 12
y=2
12
y=0.16666666666667
2x+3 (0.16666666666667)=9
2x+0.5=9
2x=9-0.5
2x=8.5
2x = 8.5
2 2
x=8.5
2
x=4.25
A regular pentagon has sides of 10 cm. Find the radius of the largest circle which can
be drawn inside the pentagon.
Answer is 6.88 cm
Divide the pentagon radially into five congruent, isosceles triangles. Each triangle has a vertex angle of 360°÷5=72° and altitude of 5÷tan(36°).
radius of circle = 5÷tan(36°) = 6.88 cm
Factor 6d2−21d...The factored polynomial is _
Answer:
Then find the product of the common prime factors. 42 = 2 ⋅3 ⋅7. 70 = 2 ⋅5 ⋅7 ... 6d2 − 21d. 27. 3y3 − 9y2. 28. 20x3 + 30x2. 29.