Answers
Answer:
add equation 2 from equation 3
Step-by-step explanation:
So, we are given equations 1, 2, and 3, but for this problem, we need to use just 2 and 3.
4x - 2y = -16
x + 2y = 6
In order to eliminate one variable, then we need to find whether there are two numbers that have the same coefficient (or multiply one by a number to make it) so that if you add/subtract two numbers, it gives you 0. So, in this problem, if you add
2y to -2y, then it gives you 0, which means that y would be canceled out.
So, the answer is the first option.
Feel free to ask any questions about clarity! (this explanation is pretty bad, but I can explain it more if you want) :D
Related Questions
It costs $32 per day to rent a medium-sized car, plus $0.25 for each mile driven over 150 miles. The equation that represents this situation is y = 0.25x + 32, where y represents the total cost of renting a car, and x represents the number of miles driven over 150 miles.
a.) What is the slope and what does it represent in the context of this problem?
b.) What is the y- intercept and what does it represent in the context of this problem?
Answers
Answer:
Read explanation
Step-by-step explanation:
A)The slope is the number before the X so 0.25, this represents the amount of money people have to pay for each mile driven over 150 miles.
B) The y-intercept is the number after the X so 32, this number represents the amount people have to pay rent the car before actually using it.
help me please help me
Answers
Answer:
3.95
Step-by-step explanation:
R = 7.9/2 = 3.95
Answer:
Step-by-step explanation:
rate of change is the slope of the line
plot the data and calculate the slope or simple find the delta cost divided by the delta people
(cost x - cost y) / (people x - people y) = rate of change
you can pick any cost as long as you use the coresponding people
(19.75 - 7.90) / (5 - 2) = rate of change
( 11 .85) / (3) = rate
3.95 = rate
try it for different cost and people and see if you get the same rate, it looks linear to me
Solve 8 = 2^x + 4
x=-4
x=-1
x=0
x=7
Answers
Answer:
x=-1
Step-by-step explanation:
because 2^3 is 8
and when you do -1+4 you get left with 3
so x=-1
Answer:
x = -1
Step-by-step explanation:
asap please help i really need it
Answers
Answer:
x ≈ 261 ft
Step-by-step explanation:
Using the sine ratio in the right triangle
sin50° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{200}{x}[/tex] ( multiply both sides by x )
x × sin50° = 200 ( divide both sides by sin50° )
x = [tex]\frac{200}{sin50}[/tex] ≈ 261 ft ( to the nearest foot )
x ≈ 261 ft
that is the answer
solve for h in the literal equation g(h+3/2)=5
Answers
Answer: h= 5/g−3/2
Step-by-step explanation:
h= 5 over g minus 3 over 2
Answer:
[tex]h\neq -3/2[/tex]
Step-by-step explanation:
Divide both sides by h+3/2;
g(h+3/2)/h+3/2=5/h+3/2
simplify
g=10/2h+3; h[tex]\neq[/tex]-3/2
solve this equation graphically using table 5m-2n=4,m-4n=-1
Answers
Answer:
m = 1; n = 0.5
Step-by-step explanation:
5m - 2n = 4; m - 4n = - 1
Plz check theses aswell
Answers
Answer:dont worry :) its right! hit enter!
Step-by-step explanation:
Answer:
Step-by-step explanation:
w' = (1, - 1 ) check
C' = ( 4, 2 ) check
Anita collects shells and stones in a ratio of 1:2.
If she has a total of 8 shells how many stones does she have
Answers
Answer:
The answer is 16 stones
Step-by-step explanation:
It's 8:16 because
8/1 = 8
and
2 x 8 = 16
To check your answer to see if its correct :
1/2 = 2
16/2=8
Hope this helps!! ;)
How many feet are in 2,241 inches? (Note: 1 foot = 12 inches)
Group of answer choices
Answers
Answer:
186.75 feet in 2,241 inches
Step-by-step explanation:
Answer:
186.75 Feet.
Step-by-step explanation:
Which point is on the graph of a direct variation equation in which k = 0.4?
A) (10, 0.04)
B) (4, 10)
C) (10, 4)
D) (0.04, 10)
Answers
A square pyramid was sliced perpendicular to its base but not through its vertex. What is the shape of the cross section shown in the figure?
A rectangular pyramid. The cross section is a trapezoid.
a parallelogram that is not a rectangle or square
a rectangle that is not a square
a square
a trapezoid
Answers
Answer:
a trapezoid
Step-by-step explanation:
Answer:
D: Trapezoid.
Step-by-step explanation:
Because you can see that the shape has only one set of parralel sides it is a trepezoid.
can someone help me solve this please
Answers
Answer:
The answer is C.
Step-by-step explanation:
Question 10. The length of a rectangular field is 65 meters. its width is 35
meters. Johnny ran around the field 4 times. How far did she run? *
O A 400 meters
B 760 meters
C 600 meters
D 800 meters
Answers
It's might be answer C but im not sure :\
Help pls!!! question in the picture!!!
Answers
Answer:
The Y intercept is two
Step-by-step explanation:
The y intercept is the point on a graph where the graph crosses the y axis.
Basically, it is the value of y when x is 0 is (x,y)
Looking at the attached graph, our y intercept is (0,2), meaning that the y-intercept is 2.
The answer is: the Y-INTERCEPT is 2
1 Katie is raising money to buy
a dog. She starts a
neighborhood babysitting service.
She paid $40 for a CPR class and
charges $5 per kid. Write an
equation she could use to calculate
her profit, p, if she has k kids.
O p = 5k - 40
P = 5k + 40
O p = 40k + 5
k = 40p - 5
Answers
Answer:
p = 5k - 40
Step-by-step explanation:
Since we're finding the profit (p), it's not the last answer choice because it's finding kids (k).
Because we have to take out from her profit whatever Katie spent, we would have -40.
Because she'd charging $5 per kid, or $5 per k, we would have 5k.
So now we know the profit is whatever she makes, then minus whatever she spent. So:
p = 5k (what she makes) - 40 (what she spent)
p = 5k - 40
Answer:
O p = 40k + 5
Step-by-step explanation:
Katie is raising money to buy a dog. She starts a neighborhood babysitting service.
I need this ASAP:
Find the volume
Answers
V=length x width x height
3x9=54
54x9=486
How many different committees can be formed from 12 teachers Abs 43 students of the committee consists of 4 teachers and 3 students ? In how many ways can the committee of 7 members be selected ?
Answers
Answer:
6108795
Step-by-step explanation:
To obtain the number of ways the committee can be selected :
4 teachers from the 12 teachers available and 3 students from the 43 students available
Using combinatorics :
12C4 * 43C3
recall :
nCr = n! ÷ (n - r)!r!
Using calculator :
12C4 = 495
43C3 = 12341
12C4 * 43C3
495 * 12341
= 6108795
Last year, the Humane Society found 96 homes for its stray kittens.
If each home adopted 3 kittens, how many kittens found homes
last year? write the operation and the answer
Answers
(D)
28
3.
The Hill family rented a car for the weekend. The rental agency charged a weekend fee of $35.00 and
$0.12 per mile. Their final bill was $44.36. Which equation could be used to discover how many miles the
family drove?
012
Answers
Answer:
d I think please be right
PLEASEEEE SOMEONE HELP ME WITH THIS ITS DUE IN A COUPLE HOURS!!!!!
Answers
Answer:
27°
Step-by-step explanation:
I'm assuming you have learned basic trigonometry: SOH CAH TOA. In this diagram to find the angle x we are given the opposite side and the hypotenuse, therefore we will use SOH. sinθ = opp/hyp. Plugging in those values we get sinθ = 5/11 -> θ = sin⁻¹ (5/11) = 27.03569179° = 27°
inverse function. sketch the graph of each function.
Answers
Answer:
I cant see picture
Step-by-step explanation:
If you take of a number and add 4, you get 16. The equation represents this situation. If x represents the original number, what does x equal?
Answers
Answer:
x = 12
Step-by-step explanation:
equation:
x + 4 = 16
to solve for x, subttract 4 on each side:
x + 4 - 4 = 16 - 4
x = 12
A person purchased a used Chevrolet
Cavalier for $4500. The car is expected to
decrease in value by 22% each year over
the next several years.
What would be the decay factor of a model
that would represent the value of the car?
1.22
0.78
-1.22
0.22
Answers
Answer:
B. 0.78Step-by-step explanation:
With 22% decrease the value after the year is:
100% - 22% = 78% of the current valueTo find 78% we need to multiply the current value by 0.78.
The same number is multiplied each year to find the decreased value.
The formula for the car would be:
P = 4500*0.78ˣThe decay factor is 0.78
Correct choice is B
Answer:
m. m, .;.
Step-by-step explanation:
A penguin walks 10 feet in 6 seconds. At this speed how far does the penguin walk in 45 seconds?
Answers
Answer:
The penguin will walk 75.15 feet in 45 seconds. It will take the penguin 26.95 seconds to walk 45 feet
Step-by-step explanation:
hope it helps !
Answer: 75 feet
Step-by-step explanation:
Jake's parents want $100,000 at the end of 40 years. They put their money in an account that yields 4% per year compounded continuously. How much money should jakes parents deposit?
Answers
Answer:
$ 20,189.65
Step-by-step explanation:
Jake's parents want $100,000 at the end of 40 years. They put their money in an account that yields 4% per year compounded continuously. How much money should jakes parents deposit?
From the above question, we are to find the Principal. The formula for Principal compounded continuously =
P = A / e^rt
Where:
A = Amount after time t = $100,000
r = Interest rate = 4%
t = Time in years = 40 years
First, convert R percent to r a decimal
r = R/100
r = 4%/100
r = 0.04 per year,
Then, solve our equation for P
P = A / e^rt
P = 100,000.00 / e ^(0.04×40)
P = $ 20,189.65
Therefore, the amount Jake's parents should invest = $ 20,189.65
what is 9-3 divied by 1/3 + 1 =
Answers
Answer:
1
Step-by-step explanation:
3 divided by 1/3 is 9, and 9-9=0
0+1=1
1
Step-by-step explanation:
how to calculate the Triangle Proportionality Theorem
Answers
Step-by-step explanation:
If a line parallel to one side of a triangle intersects the other two sides of the triangle, then the line divides these two sides proportionally.
If you solve the equation for ax+by/c=d for x, what would you get?
Answers
Answer:
x=d/a - by/ac
Steps:
ax+by/c=d
(cax+by)/c=d
cax+by=cd
cax=cd-by
x=(cd-by)/ca
x=cd/ca - by/ca
x=d/a - by/ac
AB is a diameter of the
circle. Find the angle
BCO.
A 70°
B 20°
C 60°
D50°
Answers
Answer:
70°, ,have a nice day
Answer:
∠BCO = 70°
Step-by-step explanation:
AO = CO = BO because all radii of the same circle are equal.
∠ACO = 20° because it is an isosceles triangle.
∠BCA = 90° because a triangle with it's hypotenuse being the diameter of a circle is a right triangle.
∠BCA - ∠ACO = ∠BCO
90° - 20° = 70°
∠BCO = 70°
In a class, there are twice more boys than girls. Six boys leave the class and six girls arrive ;
therefore, there are twice more girls than boys .
How many boys and girls were there at first ?
please show calculations steps plus this should be solved as a system
Answers
Answer:
Boys= 12
Girls= 6
Step-by-step explanation:
Let no: of girls be 'x'
No: of boys= 2x
boys after= 2x-6
girls after = x+6
according to the question,
2(2x-6)=x+6
4x-12=x+6
3x=18
x=6
No: of girls at first= 6
No: of boys at first=2*6=12