Answer: A
Explanation:
Just use substitution because it's more efficient. Plug -2x-8 into y to make -2x-8=3x+2. Add 8 to both sides to get -2x=3x+10. Subtract 3x to both sides to get -5x=10. Divide -5 to both sides to get x=-2. Now, plug in x=-2 to one of the equations, let's use y=3x+2. The equation would be y=3(-2)+2. Multiply 3 and -2 to get -6. Add -6 to 2 and you'll result with y=-4.
Anna purchased a new car for $25,000. The car will decrease in value 15% each year.
The value of Anna's car is modeled on the graph by function f where x is the time in years after Anna purchases her car.
I will assume that we want to find the function that predicts the value of the car after x years, which likely is an exponential decay.
The function is: f(x) = $25,000*(0.85)^x
And the graph can be seen at the end of the answer.
We know that the value of the car decreases by 15% each year, then we can model this with an exponential decay.
The general exponential decay is given by:
f(x) = A*(1 - r)^x
Where:
A is the initial value, then we have A = $25,000
x is the variable, in this case, would represent time in years.
r is the rate of decay, in this case, is the quotient between the percentage that decreases and 100%, so we will get: r = 15%/100% = 0.15
Then the exponential equation is:
f(x) = $25,000*(1 - 0.15)^x
= $25,000*(0.85)^x
This is the function that models the value of the car after x years, the graph can be seen below.
If you want to learn more, you can read:
https://brainly.com/question/19599469
I NEED HELP WITH 2 and 3 HELPPPPPPP
A first grader reads 72 words in 4 minutes.
Pls explain how you got the answer:(
all you have to do is 4 / 72
Step-by-step explanation:
4÷72
Answer:
18
Step-by-step explanation:
you divide 72 by 4
Hurry I will mark brainlyest and 20 points!!!
What division problem can be represented using the number line?
Answer:
c can br used using the number line
Answer:
I believe its A
Step-by-step explanation
HOPE THIS HELPS
In Heavenly Hash ice cream, the ratio of the amount of cashews to the amount of marshmallows to the amount of chocolate ice cream is 1 : 3 : 36 by volume .
What is the ratio of the amount of marshmallows to ice cream?
Answer:
90%
Step-by-step explanation:
The ice cream is 1 part cashew, 3 parts marshmallow, and 36 parts chocolate ice cream. That's a total of 40 parts. So the fraction that is chocolate ice cream is:
36/40 = 0.9
So 90% of Heavenly Hash ice cream is chocolate ice cream.
Place the steps in the correct order for solving the equation
8+- 6 - 5 = 8x + 1 - 3x
= -3 + 2 = 5x +1
= -3 -1 = 4x +1 -1
= -3 + x - x = 5x - +1
= -3 = 4x + 1
1 = 4
= -4 = 42
= x= -1
Answer:
say whaaaaaaaaat
Step-by-step explanation:
Step-by-step explanation:
8+x-6-5=8x+1-3x
-3+x=5x+1
-3+x-x=5x-x+1
-3=4×+1
-3-1=4x+1-1
-4=4x
-4/4=4x/4
x= -1
2x + 3y = -10
5y = 4x - 2
Answer:
(-2, -2)
Step-by-step explanation:
Answer:
(-2,-2)
Step-by-step explanation:
M a t h w a y
HELP PLEASE what's the slope of the line?
Step-by-step explanation:
The slope of a line characterizes the direction of aline. To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points .
Answer:
the slope of the line would be 1/2 I think
A two-by-four piece of wood is 1 1/2 inches wide. If placed side-by-side, how many boards are needed to make a width of 48 inches?
Answer:
35 left is 2 i think
Step-by-step explanation:
GIVING BRAINLIEST PLZZ HELP ASAP
Answer:
D
Step-by-step explanation:
x and y go up at a constant rate (or you can say it has a CROC or constant rate of chacge) y going up 5 for every one x
with our equation being y = 5x + 5
hope this helps <3
Answer:
Step-by-step explanation:
It would be D because to know if its linear, x has to increase by 1 and y by a constant rate.
X increases by 1 and y increases by 5
I've attached a graph for you to see
If you have any further questions, don't be afraid to reach out! I hope this helps!
2+4(x+1)=0 PLEASE HELPPPP ME
Answer:
I suggest that you use Socratic to solve this.
Step-by-step explanation:
Answer:
[tex]x=\frac{-3}{2}[/tex]
Step-by-step explanation:
[tex]2 + 4 ( x + 1 ) = 0[/tex]
[tex]2 + 4x + 4 = 0[/tex]
[tex]6 + 4x = 0[/tex]
[tex]4x = -6[/tex]
[tex]x = \frac{-3}{2}[/tex]
DO IT ASAP ONLY 3 PROBLEMS Please find x thanks!!! (There’s a link)
1.) x = 3.5
2.) x = -40
3.) x = -10
As an estimation we are told 5 miles is 8 km.
Convert 100 km to miles.
Answer:
62.5 miles
Step-by-step explanation:
The answer is 62.5 miles because 5 divided by 8 is 0.625 and 0.625 multiplied by 100 is 62.5
NEED HELP ASAP!! THIS IS DUE UNDER 10 MIN! GIVING BRAINLEST (My Brainlest is giving 100 extra points)
Bud is disappointed when he goes to the mission because...
A The line is closed when he gets there.
B They don't serve children.
C He went to the wrong one.
D He didn't like what they were serving.
Answer:A
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
Whats the answer for #2
What is the slope of the line.
Answer:
1/3
Step-by-step explanation:
I have a certain way of doing this, I will start from the Y-intercept, let's say its (0, 2), then, if the next point is (3, 4) i will count up 1, to get to point 3 on the graph, then count left/right to point 4. Thus making my slope 1/2.
Hope that made sense!
the radius of the base of a cylinder is 10 centimeters, and urs height is 20 centimeters. a cone is used to fill the cylinder with water. the radius of the cone base is 5 centimeters, and it’s height is 10 centimeters the number of times one needs to use the completely fillies cone to completely fill the cylinder with water is
Answer:
The answer is 24 times
help!!!!!! asap please!
Answer:
ITS ONE
Step-by-step explanation:
WHEN YOU MULTIPLY 1X1 YOU GET ONE
Evaluate 5x - 8.35y when x=12 and y=4
Answer:
26.6
Step-by-step explanation:
(12*5)-(8.35*4)
60-33.4
26.6
answer for brainliest pls
Answer:
The answer is C. 18 units
Step-by-step explanation:
Please mark brainliest
Hope this helps!
Answer:
C) 18 square units
Step-by-step explanation:
There are many ways to go about solving this. You could divide it into two triangles with a middle section. But it might be easier just to count the squares:
whole squares = 12
half squares = 4 (which equals 2)
3/4 square = 4
1/4 squares = 4
(add the 3/4 and 1/4 squares to equal 4)
12+2+4=18
perform the indicated operation. Be sure the answer is reduced.
2a+1/3a + 5/4 - 2a-3/6a^2
A 23a^2 + 6/12a^2
B -23a^2 + 6/12a^2
C 23a^2 - 6/12a^2
Answer:
A 23a^2 + 6/12a^2
Step-by-step explanation:
2a+1/3a + 5/4 -2a-3/6a^2
=4(2a+1)+15a/12a - 2a-3/6a^2
=a(8a+4+15a^2)-{2(2a-3)}/12a^2
=8a^2+4a+15a^2-4a+6/12a^2
=23a^2+6/12a^2
HELP PLZ I NEED THE RIGHT ANSWER
Answer:
54
Step-by-step explanation:
As ◇PQS is congruent to ◇ PRS,
6n + 3=4n+11
n=4
QR=6×4+3+4×4+11
In an aquarium, there are 3 red, 6 yellow, 4 white and 2 black fish. Find the ratio of the: a) Number of yellow fish to the number of white fish. b) Number of black fish to the total number of fish. c) Number of red fish to the number of black fish.
Answer:
a. 3 : 2
b. 2 : 15
c. 3 : 2
Step-by-step explanation:
Red fish = 3
Yellow fish = 6
White fish = 4
Black fish = 2
Total number of fishes = 15
a) Ratio of the Number of yellow fish to the number of white fish.
Yellow fish : White fish
6 : 4
= 6 /4
= 3/2
= 3 : 2
Ratio of the Number of yellow fish to the number of white fish = 3 : 2
b) Ratio of the Number of black fish to the total number of fish
Black fish : Total fish
2 : 15
= 2 / 15
= 2 : 15
Ratio of the Number of black fish to the total number of fish = 2 : 15
c) Ratio of the Number of red fish to the number of black fish
Red fish : black fish
= 3 : 2
= 3/2
= 3 : 2
Ratio of the Number of red fish to the number of black fish = 3 : 2
Find the measure of the indicated angle:
A) 68°
C) 45°
B) 47°
D) 940
there are 36 carpenters in a crew. On a certain, 29 were present. What percent showed up for work? (round to the nearest tenth)
Answer:
30
Step-by-step explanation:
What is the slop of a line that passes through (2,10) and (1,6)
Answer:
4
Step-by-step explanation:
Slope is x2-y2/ x1-y1
So, its 6-10/1-2
or, -4/-1
Or 4.
Hope this helps you!
#Team Rainbows.
Answer:
4.
Step-by-step explanation:
The slope = (difference in y coordinates) / (corresponding difference in the x coordinates)
= (10-6)/ (2-1)
= 4 / 1
= 4.
URGENT DUE TODAY I WILL GIVE BRAINLIEST I PROMISE
The medians of a right triangle that are drawn from the vertices of the acute angles have lengths of 2 √13 and √73. What is the length of the hypotenuse?
Answer:
10 units
Explanation:
Is 3x - y = -6 an euation for a graph
Answer:
no this can't become a number that can be graphed
Choose a system and make a case for why you would
or would not choose to solve that system by substitution
Answer:
The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other.
Step-by-step explanation:
MARKING PEOPLE AS BRAINLIST NEED HELP THANK YOUUU
Answer:
oh thats easy it is C
Step-by-step explanation: