Answer:
(-3, -6)
Step-by-step explanation:
y=2x
-3x-15=y
Use Substitution Method
-3x-15=2x
+3x +3x
-15=5x
/5 /5
-3=x
y=2x
y=2(-3)
y=-6
Answer:
(-3, -6)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Solving systems using substitution/eliminationStep-by-step explanation:
Step 1: Define Systems
y = 2x
-3x - 15 = y
Step 2: Solve for x
Substitute in y: 2x = -3x - 15Isolate x terms: 5x = -15Isolate x: x = -3Step 3: Solve for y
Define equation: y = 2xSubstitute in x: y = 2(-3)Multiply: y = -6question in pic, plz help!
how do I find the inverse of the first function ?
[tex]\boxed{\boxed{\pink{\sf \leadsto Hence \ the \ Inverse \ of \ the \ given \ function \ is \ x^2+2x-4 .}}}[/tex]
Step-by-step explanation:A function is given to us , and we need to find its inverse. So the function is ,
[tex]\bf\implies f(x) = \sqrt{x + 5 } - 1 [/tex]
So , firstly replace x with y in the given function and then solve for y to get its inverse . Taking the given function ,
[tex]\bf \implies f(x) = \sqrt{x+5}-1\\\\\bf\implies y = \sqrt{x+5}-1 \\\\\bf\implies x = \sqrt{y+5}-1 \:\:\bigg\lgroup \red{\sf Replacing \ x \ with \ y .} \bigg\rgroup \\\\\bf\implies x + 1 = \sqrt{y+5}\\\\\bf\implies y+5 = (x+1)^2 \\\\\bf\implies y+5 = x^2+1 +2x \\\\\bf\implies y = x^2+1-5+2x \\\\\bf\implies y = x^2-4+2x \\\\\bf\implies \boxed{\red{\bf f^{-1}(x)= x^2+2x - 4 }}[/tex]
Here I have also attached the graph of , x² + 2x - 4 and √(x+5) - 1. Here blue graph is of √(x+5) - 1 & red of x²+2x-4.
Hence the inverse f -¹(x) of the given function is x² + 2x - 4 .-2.4x+3.8x-x please helpppp
Answer:
0.4x
General Formulas and Concepts:
Algebra I
Terms/Coefficients/DegreesStep-by-step explanation:
Step 1: Define
-2.4x + 3.8x - x
Step 2: Simplify
Combine like terms: 1.4x - xCombine like terms: 0.4xThe perimeter of a rectangle is forty inches. The length is
two inches more than three times the width. Find the dimensions of
the rectangle.
Let Width (inches) = X
Let Length (inches) = 3x + 2
40 = (x) + (3x + 2) + (x) + (3x +2)
40 = 8x + 4
-4 -4
36 = 8x
/8 /8
4.5 = x (width)
Length = 3x + 2
length = 3(4.5) + 2
length = 13.5 + 2
length = 15.5 inches
CHECK
40 = 15.5 + 4.5 + 15.5 + 4.5
40 = 20 + 20
40 = 40
It took Bill 8 hours to paint one side of a house. It took Joanne 5 hours to paint the other side
of the house. How much longer did Bill work than Joanne?
Answer:
3 hours
Step-by-step explanation:
you would have to subtract 5 from 8 and there's you answer
Hope that helps. XD
A rectangles coordinates (RECT) are located on a coordinate plane. The coordinates for R, E, and C are: (0, 4), (5, 4), and (5,0). What is the area of the rectangle RECT?
What is the value of the expression 3x+x if x =8?
Answer:
32
Step-by-step explanation:
3 x 8 = 24, 24 + 8 = 32
what is the answer to 26=t-19
what is the answer to 26=t-19 ?
Answer:
t = 45, okay
Step-by-step explanation:
=》t - 19 = 26
=》t = 26 + 19 ( by adding 19 on both sides )
=》t = 45
Mr. Demers is making a drink by adding flavor drops to his water. If he puts 3 drops in a 12 ounce glass of water, how many ounces does he use PER DROP?
Answer:
Step-by-step explanation: if he puts 3 drops in a 12 ounce glass of water he should be using 4 ounces per drop 12 ounces divided by 3 drops gives you 4 ounces per drop
=======================================================
Explanation:
"Per drop" means "per 1 drop" or "for each 1 drop".
We start off with the ratio of
3 drops: 12 ounces
Divide both parts of that ratio by 3 so that "3 drops" turns into "1 drop"
Doing so gets us the new ratio of
1 drop: 4 ounces
So he uses 4 ounces per drop.
Decide if the following equation is growth or decay?
y = 475 (0.256)
Decay
Growth
Answer:
decay im pretty sure
Step-by-step explanation:
What is 6.5% of 150 dollars? a tip on percentage of numbers would also be appreciated, thank you :)
ABCD – FECG
what does (x) =
9514 1404 393
Answer:
x = 12
Step-by-step explanation:
Sides of similar figures are proportional, so ...
AB/FE = BC/EC
x/6 = 10/5
x = 6·(10/5) . . . multiply by 6
x = 12
12.
First Rate Rental Charges $40 a day plus $0.25 per mile. Star Rental charges $25 a
day plus $0.45 per mile. Write an equation that could be used to determine the number
of miles, m, that would result in the same cost for one day.
a. 40.25m=25.45m
b. 40m+0.25=25m+0.45
C. 40+0.25m=25+0.45m
d. 419+0.45m=25+0.25m
Answer:
b. 40m+0.25=25m+0.45
Step-by-step explanation:
Step one:
given data
First Rate Rental
Charges $40 a day plus $0.25 per mile.
let the number of days be m
and the total charges be y
y= 40+0.25m---------------------1
Star Rental
charges $25 a day plus $0.45 per mile.
y= 25+0.45m-----------------------2
Step two:
equate 1 and 2 above we have
40+0.25m= 25+0.45m
What is the equation of the line
with the points (1, 4) and (5, 12)?
12
Answer:
y = 2x + 2
Hope you have a great day!
10x + 5 - 2x + 9x.
HELP IMMEDIATELY PLEASEEE
Answer: 17x+5
Combine 10x to the 9x which would be 19x then subtract the 2x which gives you 17x+5
Answer: 17x+5
Step-by-step explanation:
10x+5-2x+9x
10x-2x+9x+5
17x+5
A submarine 50.2 m below the surface of the ocean
goes up 15.6 m. Then it goes down 35.7 m. What is the
submarine's new position relative to the surface of the
ocean? Show your work.
Please help it due today please help
Answer:
101.5 m
Step-by-step explanation:
What you have to do is 50.2 + 15.6 which equals 65.8, and then you add another 35.7 and the answer would be 101.5 m
Find the volume of this shape 11 cm 16 cm
which equation represents this graph?
Answer:
It would be the 1st answer, y= 3/2x + 2.
Step-by-step explanation:
The intersection on the Y axis determins the "+2". To find the slope, it is always x/y. It rises 3, and runs 2. Hope this helps
The model represents the equation 3x - 2 < 4 what is the solution for this inequality
Answer:
x < 2
Step-by-step explanation:
3x - 2 < 4
+ 2 | + 2
------------------
3x < 6
↓
(3x) / 3 < 6 / 3
↓
x < 2
Which of the following functions is graphed below?
A. Y=[x] -7
B. y=[x] +7
C. y=[x] +5
D. y=[x] -5
what is the graph for y=2x+1
What kind of transformation converts the graph of f(x) = 5x - 2 into the graph of g(x) = x -2
Answer:
Vertical compression
Step-by-step explanation:
To find the transformation, compare the function to the parent function and check to see if there is a horizontal or vertical shift, reflection about the x-axis or y-axis, and if there is a vertical stretch.
What is an equation of the line that passes through the point (–1,5) and is parallel
to the line x - y = 6?
Answer:
y = - x + 4
Step-by-step explanation:
The first step is to find the slope-intercept form, which is:
y=x-6.
Then, y=x+6
y=-x+4 should be the answer since it passes through the point (-1, 5)
Answer:
y=x+6
Step-by-step explanation:
the other guy was wrong
What expression is equivalent to -2x + 7
Please help! I will give thanks and brainliest if possible!
Answer:
there is no question... try to ask again and i can try to help :)
3 divided by -125
pls if you help me out. , you'll get 48 points
Answer: 0.024
Step-by-step explanation:
Answer:
That equals -0.024 Step-by-step explanation:
the difference of 2 numbers x and y multiplied by 6
Answer:
(x-y)/z
Step-by-step explanation:
uhm i dont even know how to ask for help i dont even know what this subject is called but here oh and i have to plot it on a graph which i need helo with too.
Answer:
It is a proportional relationship
Step-by-step explanation:
Here, we want to know if the relationship is proportional or not
Looking at the table, we can see that every value of x multiplied by 4 will
give y
In simpler terms;
y = 4x
Hence, we have established that there is a proportional relationship between the x and y values
The sides of three squares can be used to form triangles. The areas of the squares that
form right triangles have a special relationship. The triangle formed in the drawing below is
a right triangle.
What is the value of x, the side length of Square 2?
Mario received y text messages each minute for 10
minutes yesterday and received t test messages
each minute for 20 minutes today. What is the
total number of text messages he received for two
days in terms of y and t?
a. 30yt
b. 200yt
C. 20y+100
d. 10y+20t
The total number of text messages he received for two days is 10y+20t
What is equation?An equation is a mathematical statement that shows that two mathematical expressions are equal.
Given that, Mario received y text messages each minute for 10 minutes yesterday and received t text messages each minute for 20 minutes today.
Number of text messages for yesterday = 10y
Number of text messages for today = 20t
Total = 10y+20t
Hence, The total number of text messages he received for two days is 10y+20t
For more references on equation, click;
https://brainly.com/question/10413253
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