Answer:
$140
Step-by-step explanation:
Ryan put $160 in a bank account. After 2 months, the total in his account decreased by 25%.
Step 1
We calculate the Decrease
Original amount × Percentage Decrease
Original amount = $160
Percentage Decrease = 25%
Hence:
Decrease = $160 × 25%
= $40
Step 2
The amount in Ryan's account now is calculated as:
$160 - $40
= $140
What are all the factors of 6?
Answer:
1,2,3,6
Step-by-step explanation:
The factors of 6 are the number that go into 6 evenly
1,2,3,6
trigonometry help!! - double angle formulae
Answer:
The two rules we need to use are:
Sin(a + b) = sin(a)*cos(b) + sin(b)*cos(a)
cos(a + b) = cos(a)*cos(b) - sin(a)*sin(b)
And we also know that:
sin^2(a) + cos^2(a) = 1
To solve the relations, we start with the left side and try to construct the right side.
a) Sin(3*A) = sin (2*A + A) = sin(2*A)*cos(A) + sin(A)*cos(2*A)
sin(A + A)*cos(A) + sin(A)*cos(A + A)
(sin(A)*cos(A) + sin(A)*cos(A))*cos(A) + sin(A)*(cos(A)*cos(A) - sin(A)*sin(A))
sin(A)*cos^2(A) + sin(A)*cos^2(A) + sin(A)*cos^2(A) - sin^3(A)
3*sin(A)*cos^2(A) - sin(A)*sin^2(A)
sin(A)*(3*cos^2(A) - sin^2(A))
Now we can add and subtract 4*sin^3(A)
sin(A)*(3*cos^2(A) - sin^2(A)) + 4*sin^3(A) - 4*sin^3(A)
sin(A)*(3*cos^2(A) + 3*sin^2(A)) - 4*sin^3(A)
sin(A)*3*(cos^2(A) + sin^2(A)) - 4*sin^3(A)
3*sin(A) - 4*sin^3(A)
b) Here we do the same as before:
cos(3*A) = 4*cos^3(A) - 3*cos(A)
We start with:
Cos(2*A + A) = cos(2*A)*cos(A) - sin(2*A)*sin(A)
= cos(A + A)*cos(A) - sin(A + A)*sin(A)
= (cos(A)*cos(A) - sin(A)*sin(A))*cos(A) - ( sin(A)*cos(A) + sin(A)*cos(A))*sin(A)
= (cos^2(A) - sin^2(A))*cos(A) - sin^2(A)*cos(A) - sin^2(A)*cos(A)
= cos^3(A) - 3*sin^2(A)*cos(A)
= cos(A)*(cos^2(A) - 3*sin^2(A))
now we subtract and add 4*cos^3(A)
= cos(A)*(cos^2(A) - 3*sin^2(A)) + 4*cos^3(A) - 4*cos^3(A)
= cos(A)*(-3*cos^2(A) - 3*sin^2(A)) + 4*cos^3(A)
= cos(A)*(-3)*(cos^2(A) + sin^2(A)) + 4*cos^3(A)
= -3*cos(A) + 4*cos^3(A)
4.) Admission to the State Fair is $6 and each ride costs $3. Ella wants to spend less than $40. What is the maximum number of rides Ella can go on? Round to the nearest whole number.
Answer:
11 rides
Step-by-step explanation:
First Step - Subtract 6 from 40 because that will not be of use for now.
40-6=34
Next Step - divide 34 by 3 to find the number of rides.
(you will end up with a decimal so I rounded it up to a whole number.)
34/3=11 (rounded)
The final answer is 11 rides.
Hope this helped :)
Answer:
6 + 3x ≤ 40
x≤11
Step-by-step explanation:
6 + 3x ≤ 40
-6 -6
3 x ≤ 34
3 x ≤ 3
x ≤ 11
i need help on this, pls :)
what is the value of a?
Which of the following forms is best for determining the graph's X- intercepts?
A. Standard Form
B. Intercept Form (Factored Form)
C. Vertex Form
Answer:
B -option
Step-by-step explanation:
Intercept form , some of them are
Y=mx+ c where x is x-intercept and b -is y intercept, m-is slope
You can also write as
y=a(x-p)(x-q)
Help show workings
Due asap
Answer:
x=35
Step-by-step explanation:
Alright so an isosceles triangle is a triangles that has 2 angles that have the same value and those lines tell us which angles are the ones that are the same which would be angle Q and angle R. The lines are almost pointing at those angles. All of the angles will equal 180 so we set up an equation
180=2x + 40 because Q and R have the same value we multiply the 2x by 2
now we have 180=4x+40
step 1 subtract each side by 40
140=4x
step 2 divide each side by 4
35=x
is y=9x-5 proportional?
PLEASE SOMEONE HELP
solve the equations using substitution method and SHOW YOUR WORK
A. y = 2x + 1
5x + y = 15
B. y = x + 7
4x + 3y = -7
C. y = 1
6x - 8y = 28
D. 2x - 3y = 16
4x + y = 4
Simply 3x +9y + 2x
Please help me
Answer:
5x+9y
Step-by-step explanation:
Step-by-step explanation: Notice that 3x and 2x are like terms.
So we can combine them to get 5x.
Since 9y is the only y term, we leave it separate.
So our answer is 5x + 9y.
An 80% confidence interval for a proportion is found to be (0.27,0.33). What
is the sample proportion?
A. 0.31
B. 0.29
C. 0.33
D. 0.30
Answer:
.30
Step-by-step explanation:
The sample proportion is option D.
What is the sample proportion?When repeated random samples of a certain size n are taken from a population of values for a categorical variable, the mean of all sample proportions (p-hat) equals the population percentage (p).
Option D aptly defines the solution.
Learn more about sample proportion here:
https://brainly.com/question/24232216
#SPJ2
x2 + 10x + 16/x + 2 =
HELP ASAP !! Plss
Answer:
The answer is x+8.
Because you gotta factor out first and then cancel.
A package in the shape of a rectangular prism has a length of 412 feet, a width of 234 feet, and a height of 213 feet. What is the volume, in cubic feet, of the package?
1618
161112
2278
2878
PLEASE HELP QUICK PLEASEEE
Answer:
x=-1 4/5
first one
The elevator can hold at most 20 people. Which inequality shows the capacity of the elevator.
A
x ≤ 20
B
x > 20
C
x < 20
D
x ≥ 20
Answer:
A x ≤ 20
Step-by-step explanation:
Given the function f(x) square root x+1 -6choose the correct transformation.
What is the equation of the line perpendicular to 2x + y = -5 and passes through the point (4, -3)? Write your answer in slope-intercept form. Show all work.
2x+y= -5 is our equation and it passes through (4, -3)
point-slope formula= y-y1= m(x-x1)
fill in your formula, but flip the slope so its perpendicular. so slope is 1/2.
y+3=1/2(x-4) when i filled the formula in, i used 4 as x1 and -3 as y1.
y+3=1/2x-2 multiply x and -4 by 1/2
y=1/2x-5 subtract 3 from both sides.
Final answer: y=1/2x-5
Also, i'm sorry my answer took so long the bell rang and so I had to leave this alone for a minute. Feel free to ask any questions :)
Which value of b will make the
expression x^2+bx+120 factorable?
Answer:
Step-by-step expla These are the possible sums of the factor pairs of 12 b is the sum of the factors used to multiply to get 12 for the C value. ( x + 1) xx (x + 12) = x^2 + 13 x + 12 ( x - 1) xx (x - 12) = x^2 + (-13) x + 12 (x + 2) xx (x + 6) = x^2 + 8x + 12 (x - 2) xx (x - 6) = x^2 + (-8)x + 1
Answer: 12 b
These are the possible sums of the factor pairs of 12 b is the sum of the factors used to multiply to get 12 for the C value. ( x + 1) xx (x + 12) = x^2 + 13 x + 12 ( x - 1) xx (x - 12) = x^2 + (-13) x + 12 (x + 2) xx (x + 6) = x^2 + 8x + 12 (x - 2) xx (x - 6) = x^2 + (-8)x + 1
5 (x+5) + 2 (x+10)
can you help me
Can any kind soul help me ASAP
needs to be turned in soon pls help!!
Answer:
Step-by-step explanation:
[tex]12\sqrt{11}=\sqrt{11*12*12}\\\\=\sqrt{1584}[/tex]
Violet puts 12 out of every 192 dollars that she earns into a savings account. Which of the following is equivalent to
Answer:
I think it is 12
Step-by-step explanation:
There are 260 players on 20 teams at a basketball tournament. How many players are on each team?
Answer:
There should be 13 players on each team.
(Which is weird because its usually 15 players)
Step-by-step explanation:
Anyways all we have to do to find out how many player are on each team is to divide the total amount of player by the teams.
260 ÷ 20 = 13
So, there are 13 players on each team.
(**20 POINTS**)
1/3 of the students in a school are in sixth grade.
------------------------------------------------------------------------------
1. How many sixth graders are there if the school has 70 students?
2. How many sixth graders are there if the school has 28 students?
3. If the school has x students, write an expression for the number of sixth graders in terms of x.
4. How many students are in the school if 63 of them are sixth graders?
Answer:
1. 23 2. 9 3. x/3 4. 189
Which is of the following is equal to??
Answer:
The correct answer is the second one.
I'm 100000000000% sure
Problem #3
The diagram shows an obtuse triangle
ABC with AB = 57 cm, AC = 48 cm and
BÂC=117 degrees
Calculate:
a the length BC
(3 marks)
b the area of triangle ABC (2 marks)
c the size of the angle ABC. (3 marks)
I NEED HELPP PLEASEEE!!!!!
Given:
The side lengths of two cubes are 12 ft and 6 ft.
To find:
The side length of third cube.
Solution:
From the given figure it is clear that the cubes are inclined to each other in such a way so that they form a right angle triangle and side length of third cube is the hypotenuse.
Let x be the side length of the third cube.
Using Pythagoras theorem, we get
[tex]Hypotenuse^2=Base^2+Perpendicular^2[/tex]
[tex]x^2=(6)^2+(12)^2[/tex]
[tex]x^2=36+144[/tex]
[tex]x^2=180[/tex]
Taking square root on both sides, we get
[tex]x=\pm\sqrt{180}[/tex]
[tex]x=\pm 6\sqrt{5}[/tex]
Side cannot be negative. So,
[tex]x=6\sqrt{5}[/tex]
Therefore, the side length of the third cube is [tex]x=6\sqrt{5}[/tex] ft.
Answer please (-6y^2 +y)(3y-2)
Answer:
−18^3 + 15^2 − 2
Step-by-step explanation:
this is to simplest form
_____________________________________________
(−6^2+)(3−2)
−6(3−2)⋅^2+(3−2)
______________________________________________________
−6(3−2)⋅^2+(3−2)
−18^3+12^2+(3−2)
___________________________________________________
−18^3+12^2+(3−2)
−18^3+12^2+3^2-2
________________________________________________
-18^3+12^2+3^2−2
−18^3+15^2−2
_________________________________________
=−18^3 + 15^2 − 2
may someone help me with this?? QUESTION: Write the phrase as an expression 5 times a number d An expression is. i put already d-15 but it was wrong so yes i need help
Answer:
5d
Step-by-step explanation:
five time a number d
5 x d
5d
What would x and Y be?
Answer:
6 to the square root of 2
Step-by-step explanation:
square root congruency theorem
can anyone please help ME!:)
Answer:
x y
0 0 - this is the y intercept
1 -4
2 -8
3 -12
4 -16
Step-by-step explanation: