Answer:
I got you again bro
Step-by-step explanation:
10x-20=7x+4
10x=7x+24
3x=24
x=8
Top angle=10(8)-20=60
Bottom angle=7(8)+4=60
Note:They should equal each other
At 20 degrees celsius, the ice will melt in 20 minutes. How long will it take to melt in 30 degrees celsius?
Answer:
13.33
Step-by-step explanation:
Write the equation for an inverse variation
⇒ y = k/x
Where x is degrees and y is minutes
Substitute 20 and 20 for x and y
⇒ 20 = k/20
Multiply both sides by 20 to solve k
⇒ 20 × 20 = 20 × k/20
⇒ k = 400
After solving for k, write an equation for the inverse variation
⇒ y = 400/x
Substitute 30 for x
⇒ y = 400/30
⇒ y = 40/3
⇒ y = 13.3333333333
⇒ y = 13.33
[RevyBreeze]
whats wrong with my answers?
77a)
[tex]y=0.5x-2\implies y=\cfrac{x}{2}-2\implies \stackrel{x-intercept}{0=\cfrac{x}{2}-2} \\\\\\ 2=\cfrac{x}{2}\implies 4=x\qquad \qquad \boxed{(4~~,~~0)} \\\\\\ \stackrel{y-intercept}{y=0.5(0)-2}\implies y=-2\qquad \qquad \boxed{(0~~,~~-2)}[/tex]
77b)
[tex]y=-0.4x+2\implies y=-\cfrac{4x}{10}+2\implies y=\cfrac{2x}{5}+2 \implies \stackrel{x-intercept}{0=\cfrac{2x}{5}+2} \\\\\\ -2=\cfrac{2x}{5}\implies -10=2x\implies \cfrac{-10}{2}=x\implies -5=x~\hfill \boxed{(-5~~,~~0)} \\\\\\ \stackrel{y-intercept}{y=-0.4(0)+2}\implies y=2\qquad \qquad \boxed{(0~~,~~2)}[/tex]
A pair of shoes usually sells for $59. If the shoes are 40% off, and sales tax is 8%, what is the total price of the shoes including tax?
A.
$41.42
B.
$38.23
C.
$38.59
D.
$40.12
[tex]\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{40\% of 59}}{\left( \cfrac{40}{100} \right)59}\implies 23.6~\hfill \underset{sale~price}{\stackrel{59~~ - ~~23.6}{35.4}} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{8\% of 35.4}}{\left( \cfrac{8}{100} \right)35.4}\implies 2.832~\hspace{10em}\underset{\textit{sale price plus tax}}{\stackrel{35.4~~ + ~~2.832}{\approx 38.23}}[/tex]
M is directionally proportional to r^3. when r=4, M=160. work out value of M if r=2
Answer:
M = 20
Step-by-step explanation:
given M is directly proportional to r³ then the equation relating them is
M = kr³ ← k is the constant of proportion
to find k use the condition when r = 4, M = 160 , then
160 = k × 4³ = 64k ( divide both sides by 64 )
[tex]\frac{160}{64}[/tex] = k , then
k = 2.5
M = 2.5r³ ← equation of proportion
when r = 2 , then
M = 2.5 × 2³ = 2.5 × 8 = 20
Evaluate the expression for t = –2.
|t − 7| HELP PLS IM GIVING 23 POINTS OUT TOO FOR RIGHT ANSWERS!
Answer:
T=-9
Step-by-step explanation:
Solve each equation. a. 8x = 2/3 b. 1 1/2 = 2x c. 5x = 2/7 d. 1/4x = 5 e. 1/5 = 2/3x
Answer:
a. x = [tex]\frac{1}{12}[/tex]
b. [tex]\frac{1}{4}[/tex] = 1x
c. 3x = [tex]\frac{3}{3}[/tex]
d. x = [tex]\frac{1}{20}[/tex]
e. x = [tex]\frac{10}{3}[/tex]
Evaluate m + 7.5, when m = 86
If you can give an answer, what could it be…..?
Answer: 86 + 7.5 = 93.5
Step-by-step explanation:
The first three steps of completing the square to solve the quadratic equation x² + 4.0 - 6 = 0 are shown
below.
Step 1: x2 + 4x = 6
Step 2: x² + 4x + 4 = 6+4
Step 3: (x + 2)2 = 10
What are the next 3 steps?
Answer:
The next 3 steps are:
#1: [tex]\sqrt{ (x+2)^{2}} =\sqrt{10}[/tex] -- Using the square root method, we're going to find the square root of both sides.
#2: [tex]x+2 = \frac{+}{} \sqrt{ 10 }[/tex] -- When finding the square root of 10 it has to be + and minus.
#3: [tex]x + 2 = \frac{+}{}\sqrt{10} \\ -2 \ \ \ \ \ \ \ -2\\[/tex] -- Subtract 2 on both sides
#4 (solution): [tex]x = -2 \frac{+}{} \sqrt{10}[/tex]
What is the effect on the graph of the function f(x)=x^2 when f(x) is changed to f(x+8)?
A. Shifted up
B. Shifted left
C. Shifted right
D. Shifted down
Answer:
B. Shifted leftStep-by-step explanation:
Initial function is
f(x) = x²Changed function is
f(x + 8)This is best explained when graphed. See below to confirm the correct option
f(x+8)
(x+8)²So
x² is changed to (x+8)²
Change in x
It will shift 8 units left
Option B
Please help I don’t understand graphs !
Answer:
Vertical Asymptote at: x = - 1.5
Slanted Asymptote at: y = -x 9/2
Step-by-step explanation:
See image (I HAVE NO IDEA IF YOUR SUPPOSED TO GIVE THE SLANTED ASYMPTOTE. THE PROBLEM ONLY SAYS VERTICAL AND HORIZONTAL ONLY, SO I GUESS ONLY DRAW THE GREEN LINE, NOT THE PURPLE ONE!)
So only draw the x = - 1.5 line that is green!
back again pls help
Answer:
100
Step-by-step explanation:
Angle x and the angle equaling 100 are vertical angles.
the 45 degree angle is just there to confuse you
Find the exact area. See picture for full problem. Please and thank you so very much!(:
Answer:
384sqrt3
Step-by-step explanation:
The formula for the area of a hexagon is A = 3sqrt3 times s^2 /2
Plug in s = 16 to get A = 3sqrt3 times 16^2 (256) / 2
3sqrt3 times 256 is 768sqrt3
You divide that by 2 to get 384sqrt3
Find the perimeter and area of a plank of size 300 cm * 30 cm
Given :
Length of the plank = 300 cm.Breadth of the plank = 30 cm.⠀
To Find :
The perimeter and area of the plank.⠀
Solution :
Perimeter of the plank :
[tex]\: {\qquad \dashrightarrow \sf 2 \times (Length + Breadth) }[/tex]
[tex]\: {\qquad \dashrightarrow \sf{{ 2 \times (300 + 30) \: cm }}}[/tex]
[tex]\: {\qquad \dashrightarrow \sf{{ 2 \times (330) \: cm }}}[/tex]
[tex]\: {\qquad \dashrightarrow \sf{{ 600 \: cm }}}[/tex]
⠀
Area of the plank :
[tex]\: {\qquad \dashrightarrow \sf (Length \times Breadth) }[/tex]
[tex]\: {\qquad \dashrightarrow \sf (330 \times 30) \: {cm}^{2} }[/tex]
[tex]\: {\qquad \dashrightarrow \sf 9 000 \: {cm}^{2} }[/tex]
⠀
Step-by-step explanation:
Given :-
Length = 300cmWidth = 30 cmTo find :-
Perimeter and area of plankSolution :-
Perimeter of rectangular plank = 2(L+W)
putting the values,
perimeter = 2(300+30)cm
⇝660 cm
Area of rectangular plank = L × W
putting the known values ,
Area = 300 × 30 cm²
⇝ 9000cm²
What is the solution to this system of equations?
Answer:
(1, 3) depending if it counts as 1 2 3 4 5... not 1...5...10
Step-by-step explanation:
so i think the solution was where the two lines cross?
Answer:
(-1,3)
Step-by-step explanation:
The solution to the system of equations is where the two graphs intersect.
The two lines intersect at x=-1 and y = 3
(-1,3)
A graph titled Population of Ohio has years on the x-axis and population (millions) on the y-axis. Points are at (1930, 7), (1950, 8), (1970, 10.5), (1990, 10.8), (2010, 11.8).
What relationship between the population of Ohio and the number of years is displayed in the scatterplot ?
As the number of years increased, the population increased.
As the number of years increased, the population stayed the same.
As the number of years increased, the population decreased.
As the number of years decreased, the population decreased.
Answer
A.) As the number of years increased, the population increased.
You and a friend are playing a game by tossing two coins. If both coins land on heads,
you win. If both land on tails, your friend wins. Otherwise, nobody wins. The table shows
the possible outcomes.
Is this a fair game?
Answer:
I'm not 100% sure but i think its a
Step-by-step explanation:
Both have 2 heads and 2 tails so that's 4 and it's a fair game and b is wrong and you will eliminate c.
The game is fair because there is an equal chance of winning an losing the game.
What is probability?Probability is simply how likely something is to happen.
Probability formula[tex]P(E )=\frac{Number\ of \ favorable\ outcomes }{Total\ number \ of outcomes}[/tex]
Where,
P(E) is the probability of an event.
What is the fair game?A fair game is the game in which there is an equal chance of wining or losing.
According to the given question.
Two coins are tossed.
[tex]\implies sample\ space= \{ HH, HT, TH, TT\}[/tex]
[tex]\implies total\ number \ of outcomes = 4[/tex]
Therefore,
The probability that you win is given by
[tex]P(E_{1} )=\frac{Number\ of \ favorable\ outcomes }{Total\ number \ of outcomes}[/tex]
[tex]\implies P(E_{1} )= \frac{1}{4}[/tex] (getting HH is a favorable outcome)
[tex]\implies probability\ of\ losing\ the\ game = 1-\frac{1}{4} =\frac{3}{4}[/tex]
And, the probability that your friend wins the game is given by
[tex]P(E_{2}) = \frac{Total\ number\ of\ favorable\ outcomes\ }{Total\ number\ of\ outcomes}[/tex]
[tex]\implies P(E_{2} )=\frac{1}{4}[/tex] (getting TT is the favorable outcome)
[tex]\implies probability\ of\ losing\ the\ game = 1-\frac{1}{4} =\frac{3}{4}[/tex]
Hence, the game is fair because there is an equal chance of winning an losing the game.
Find out more information about probability and fair game here:
https://brainly.com/question/22582276
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PLEASE HELP, THIS IS DUE ALREADY AND I AM IN A HUGE HURRY
Solution:
Note that:
Given equation: y = 8xLet's substitute x as 2 to find out y.
y = 8x=> y = 8(2)=> y = 16Let's substitute x as 4 to find out y.
y = 8x=> y = 8(4)=> y = 32Final answer:
When x = 2, y = 16When x = 4, y = 32Option B is correct.
pls help due in 5 min.
Answer:
4 containers orange juice
4 containers pinapple
2 containers cranberry
Step-by-step explanation:
1000 milliliters are in a liter
4 liters orange juice, 4*500 = 2,000
4 liters pinapple, 4*500 = 2,000
2 liters cranberry, 2*500 = 1,000
Total 5 liters
A recipe calls for 2 cups of flour and 3 cups of sugar. How many cups of flour would be needed if the amount of sugar were increased to 12 cups?
Answer:
It would be 8 cups of flour.
Answer:
8 cups
Step-by-step explanation:
Providing Brainliest. <3
Answer:
9/4 seconds
Step-by-step explanation:
Plug 13 into the equation
13=94-16t^2
subtract 94
-81=-16t^2
divide by -1
81=16t^2
take the square root of both sides
9=4t
divide by 4
t=9/4
PLEASE HELP ME!!!! All three friends want to purchase the same gaming system so they can play games together. The list price of the gaming system is 349.99 How much will each friend pay for the gaming system?
Answer:
116.663333333 repeating
Step-by-step explanation:
do 349.99 divided by 3
Jackson went to the mall and found a pair of jeans on sale at American Eagle. The original price of the jeans was $45.50, but they were on sale for 40% off. What was the amount of the discount?
Answer:
The discount is $18.20 which changes the price of the jeans to $27.30.
Find an equation of a square root curve of the form
= √ + that approximately contains the points
(3,7) and (6, 8)
Answer:
y = √(5x+34)
Step-by-step explanation:
The regression formula that matches a square root function to these points can be worked out by a suitable calculator. The attachments shows the points are matched exactly by the function ...
y = √(5x+34)
__
If you would like to work this by hand, you can put the (x, y) point values into the proposed equation and see what the coefficients need to be:
y = √(ax +b)
7 = √(3a +b) ⇒ 49 = 3a +b
8 = √(6a +b) ⇒ 64 = 6a +b
Subtracting the first equation from the second, gives ...
(64) -(49) = (6a +b) -(3a +b)
15 = 3a ⇒ a = 5
49 = 3(5) +b ⇒ b = 34
Find the value of x.
3x -8°
2x + 1°
If the angles are equal, then, x = 9.
What is simplification?Simplification of expressions means rewriting the same algebraic expression with no like terms and in a compact manner.
Given are two angles, 3x -8° and 2x + 1°, simplifying by equating them,
3x -8° = 2x + 1°
x = 9
Hence, If the angles are equal, then, x = 9.
For more references on simplification, click;
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What is the 9 th term of the sequence: 24, 12, 6, 3..
Answer:
24, 12, 6, 3, 1.5, 0.75,0.375, 0.1875, 0.09375
The BOLD number is your answer, and the other ones are the sequence. oof, that was a lot of calculating!
Thanks!
Answer:
0.046875
Step-by-step explanation:
Each number is being divided in half each time.
24 / 2 = 12
12 / 2 = 6
6 / 2 = 3
3 / 2 = 1.5
1/5 / 2 = 0.75
0.75 / 2 = 0.375
0.375 / 2 = 0.1875
0.1875 / 2 = 0.09375
0.09375 / 2 = 0.046875 <--- This is the ninth term of the sequence.
The sides of a triangle measure 6, 8 and 10 cm. What is the area of the triangle?
Answer:
24 units²Step-by-step explanation:
The sides of a triangle measure 6, 8 and 10 cm. What is the area of the triangle?
from the data it is a right triangle, 10 cm is the hypotenuse
so
1/2 (6 * 8) =
1/2 * 48 =
24 units²
F=9/5c+32 Is there a proportional relationship between c and f why?
Answer:
that looks hard
Step-by-step explanation:
thx for the points
. Niara goes bowling.
• She has $25.00 to spend.
• She spends $4.25 to rent shoes.
• She spends $2.50 for each game she bowls.
Which inequality can Niara use to determine x, the greatest number of games she can bowl?
Answer:
Step-by-step explanation:She can bowl 8 games and what I did was subtract the $4.25 from the $25and thethen divide the rest by the 2.52.50
Covert 6 pounds and 4 ounces into ounces
Answer:
6 pounds = 96 ounces
4 pounds = 64 ounces
the distance traveled,d, and the speed,s which is dependent and which is the independent variable
Step-by-step explanation:
Speed is independent and distance is dependent
Distance depends on the speed
Speed influences the distance