Question: How many solutions: x + 2y = 6 and 2x − 3y = 26
Answers/Answers to choose from:
One-Solution
Infinitely Many Solutions
Or No Solution
(Basically does the question have only one solution, infinitely many solutions, or does it have no solution) Please don't guess
Answer:
one-solution
Step-by-step explanation:
(x + 2y = 6)2
2x - 3y = 26
2x + 4y = 12
2x - 3y = 26
7y = -14
y = -2
x + 2(-2) = 6
x + -4 = 6
x = 10
Answer:
One-SolutionStep-by-step explanation:
It is two lines, if they intersect there is one solution, if parallel- no solution, if same lines- infinitely many solutions
Lets put them in slope-intercept form and compare:
x + 2y = 6 ⇒ 2y = -x + 6 ⇒ y = -1/2x + 32x - 3y = 26 ⇒ 3y = 2x - 26 ⇒ y = 2/3x - 26/3As we see the lines have different slopes, so they intersect which means one solution only.
How many right angles are in this shape.
Answer:
B:3
Step-by-step explanation:
Given f(x) = –x– 5, solve for a when f(x) = -3.
Answer:
-2
Step-by-step explanation:
f(x) = –x– 5
f(x) = -(-3)– 5
f(x) = 3– 5
f(x) = -2
Answer:
Answer is -2 because - * - = + 3-5=-2
The point (4, 10) is in each scatterplot. In which one is it an outlier? On a graph, points (4, 10) and (6, 1) are outside of the cluster. On a graph, points are scattered. On a graph, point (2, 1) is outside of the cluster. On a graph, all points are within the cluster.
Answer:
A) On a graph, points (4, 10) and (6, 1) are outside of the cluster.
Answer:
A) The first option
Step-by-step explanation:
Solve this equation:
3x - 5x + 8 - 3x = -5X -8
-5 = -3(x + 11) HELPP
Answer: x=9 1/3
Step-by-step explanation:
-5=-3x-33
-5+33=-3x
28=-3x
3x=-28
x=28/3
x=9 1/3
Answer: X=-28/3
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
−5=−3(x+11)
−5=(−3)(x)+(−3)(11)(Distribute)
−5=−3x+−33
−5=−3x−33
Step 2: Flip the equation.
−3x−33=−5
Step 3: Add 33 to both sides.
−3x−33+33=−5+33
−3x=28
Step 4: Divide both sides by -3.
-3x/-3= 28/-3
X=-28/3
have a nice day :)
Read the ratio as a fraction in simplest form 3611 and 12 odd
Answer:
3611/12
Step-by-step explanation:
PLLLZZZZZZ HELPPPP FASTTTTTT
Answer:
I think it's the y-function. Are there any choices to choose from?
Step-by-step explanation:
Answer:
They increase at the same rate
Step-by-step explanation:
If you look at linear function p, the equation is y=3x-6
I need help!!!!!! Ten points for whoever gets this correct
Answer:
The correct answer is 25 ¢(cents) (.25 of a dollar) Per Juice box
Step-by-step explanation:
34 divided by 136 is .25 or 25 ¢
To determine the height of the volcano Mount Saint Helens, a surveyor measured the angle of elevation to the top of the volcano to be 34.8°. She then moved 1000 feet closer to the volcano and measured the angle of elevation to be 40.4° Determine the height of Mount Saint Helens to the nearest foot.
Answer:
The height is 3791 ft.
Step-by-step explanation:
You need to make a drawing. Start with a vertical segment, 2 inches long, on the left side of the page. Label the top point A and the bottom point B. At the bottom endpoint, draw a longer horizontal segment, 4 inches long, to the right. Label the bottom right endpoint C. Connect A and C with a segment. Angle C is the original angle of elevation. On the bottom horizontal side, approximately 1 inch to the left of C, draw point D. Connect D and A with a segment. DA = 1000 ft. m<C = 34.8°. m<ABD = 40.4°. We are looking for AB, the height of the volcano.
We can work on triangle ADC.
m<C = 34.8°
Angles ADB and ADC are a linear pair, so m<ADC = 180° - 40.4° = 139.6°
m<DAC + m<ADC + m<C = 180°
m<DAC + 139.6° + 34.8° = 180°
m<DAC = 5.6°
Using the law of sines, we can find AC.
[tex] \dfrac{\sin A}{a} = \dfrac{\sin B}{b} [/tex]
[tex]\dfrac{\sin 5.6^\circ}{1000} = \dfrac{\sin 139.6^\circ}{AC}[/tex]
[tex]AC = \dfrac{1000\sin 139.6^\circ}{\sin 5.6^\circ}[/tex]
[tex] AC = 6642~ft [/tex]
Now we use triangle ABC. AC = hypotenuse. AB = opposite leg. <C is known angle.
[tex] \sin C = \dfrac{opp}{hyp} [/tex]
[tex]\sin 34.8^\circ = \dfrac{AB}{6642~ft}[/tex]
[tex]AB = 6642~ft \times \sin 34.8^\circ[/tex]
[tex] AB = 3791~ft [/tex]
Answer: The height is 3791 ft.
Tara plans to rent a car for the weekend. The cost is $45 plus $0.15 for each mile she drives. Write an equation that represents this situation and describe the variables.
Answer:
y = 45 + 0.15x
Step-by-step explanation:
$45 is the initial cost
0.15 is the cost for each mile
we dont know the miles so miles is x, unknown
Suzanne is making a circular table out of a square piece of wood. The radius of the circle that she is cutting is 3 feet. How
much waste will she have for this project? Express your answer to the nearest square foot.
Draw a diagram to assist you in solving the problem. What does the distance of 3 feet represent in this problem?
Answer:
The waste Suzanne is going to have is around 7.726.
8 if looking for nearest square foot.
Step-by-step explanation:
Area for a square - x*x (length times length)
Area for a circle - r^2*pi
Find the area of the circle first, which plug in r as 3.
3^2*pi
9pi
≈28.27433
Notice for a circle inside a square, the length of the square is the diameter of the circle.
By knowing 2r=diameter, we know the length of the square is 6
substitute x as 6.
6*6=36
Find the waste= Area of square - Area of circle
36-28.27433
≈7.726
The image I attached should give you a clue on how the problem is being done and help you to understand what the 3 feet means.
The coordinates of three vertices of a square A (-2 1/2 , 1 1/2), B (-2 1/2 -3), and C (2,1 1/2 when point D is placed on this square what will the perimeter of the square be?
Answer:
The perimeter of square will be 18 units
Step-by-step explanation:
We are given that the coordinates of three vertices of a square A (-2 1/2 , 1 1/2), B (-2 1/2 -3), and C (2,1 1/2 )
When point D is placed on this perimeter.
We have to find the perimeter of the square.
First we have to find the side of square by using the distance formula
Distance formula
[tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
Coordinates of A=(-5/2,3/2)
Coordinates of B=(-5/2,-3)
Length of side AB=[tex]\sqrt{(-5/2+5/2)^2+(-3-3/2)^2}[/tex]
Length of side AB=[tex]\sqrt{0+(-9/2)^2}[/tex]
Length of side AB=9/2 units
Now, the perimeter of square=4 (side)
Using the formula
Perimeter of square=4(9/2)=18 units
PLEASE HELP
Question and answer choices are in the screenshot below
Please don't spam
Answer:
B I think
Step-by-step explanation:
Answer: Choice B
=========================================================
Explanation:
Let's say we had segment PQ. So the endpoints are P and Q. Let M be the midpoint of segment PQ.
Furthermore, let P have coordinates (x+6, y/3). Dividing by 3 is the same as multiplying by 1/3. So (1/3)y is the same as y/3.
Let Q have the coordinates (r,s). The goal is to express r and s in terms of x and y, as the answer choices indicate.
The midpoint M is located at (2,-5)
---------------------
For now, let's focus on the x coordinates of each point
x coordinate of P is x+6x coordinate of Q is rx coordinate of M is 2If we average the x coordinates of P and Q, we'll get the x coordinate of M
So we add up (x+6) and r, then divide by 2, and we should get 2 as a result
( (x coord of P) + (x coord of Q) )/2 = x coord of M
( (x+6) + (r) )/2 = 2
(x+6+r)/2 = 2
Let's solve for r
(x+6+r)/2 = 2
x+6+r = 2*2
x+6+r = 4
r = 4-x-6
r = -2-x
The x coordinate of point Q is -2-x
----------------------
We'll follow the same basic idea for the y coordinates
The y coordinate of P is y/3The y coordinate of Q is sThe y coordinate of M is -5We then get
( (y coord of P) + (y coord of Q) )/2 = y coord of M
( (y/3) + (s) )/2 = -5
(y/3) + s = -5*2
(y/3) + s = -10
Now solve for s
(y/3) + s = -10
s = -10-(y/3)
This is the y coordinate of point Q.
------------------------------
We found
x coordinate of Q is -2-xy coordinate of Q is -10-(y/3)Point Q is therefore located at (-2-x, -10-(y/3) )
This points to choice B as the final answer.
Solve the equation 0.3 3=n
n=_____
Tammy and Jay go out to dinner. Their total bill, including tax, comes out to $46.14. Once they add tip, they end up spending $53.98. What percent tip did they give? (Round to the nearest percent).
What number is missing from the table of equivalent ratios?
A. 2
B. 5
C. 7
D. 13
Answer:
Step-by-step explanation:
The answer would be 5 because 14/7=2 and 6/3=2 and 10/ 2 =5 so 5
For a project in statistics class, a pair of students decided to invest in two companies, one that produces software and one that does biotechnology research. Andy purchased 65 shares in the software company and 43 shares in the biotech firm, which cost a total of $6,035. At the same time, Xavier invested a total of $4,415 in 11 shares in the software company and 43 shares in the biotech firm. How much did each share cost?
Each share in the software company cost $
, and each share in the biotech firm cost $
.
Answer:
the cost of each share in the software company and cost of each share in the biotech firm is $30 and $95 respectively
Step-by-step explanation:
The computation of the cost of each share in the software company and cost of each share in the biotech firm is as follows:
Let us assume the cost of each share in the software company be x
And, for biotech it would be y
Now
65x + 43y = $6,035 .......(i)
11x + 43y = $4,415 ......(ii)
Now subtract equation 2 from equation 1
54x = $1,620
x = $30
Now put the x value in any of the above equation
65($30) + 43y = $6,035
$1,950 + 43y = $6,035
43y = $6,035 - $1,950
43y = $4,085
y = $95
Hence, the cost of each share in the software company and cost of each share in the biotech firm is $30 and $95 respectively
The reciprocal of a fraction is when you switch the numerator and denominator so the fraction becomes “flipped”.
TRUE or FALSE
Answer:
it's true...............
given AC with A(3,4) and C(-9,-2) if B partitions AC such that the ratio of AB to BC is 1:5 find the coordinates of B.
Answer:
The co-ordinates of B (1,3 )
Step-by-step explanation:
Step(i):-
Given A( 3,4) and C( -9, -2)
Given 'B' partition AC such that
B divides AC in the ratio is 1:5 internally
Section formula
[tex](\frac{mx_{2}+nx_{1} }{m+n} ,\frac{my_{2}_+ny_{1} }{m+n} )[/tex]
Step(ii):-
Given points are
A( 3,4) and C( -9, -2) and ratio 1 : 5
(x₁ , y₁) = ( 3,4) and (x₂, y₂) = (-9,-2)
m:n = 1 : 5
The co-ordinates of B
= [tex](\frac{1(-9)+5(3) }{1+5} ,\frac{1(-2)+5(4) }{1+5} )[/tex]
= [tex](\frac{6}{6} , \frac{18}{6} )[/tex]
= (1 , 3)
Final answer:-
The co-ordinates of B (1,3 )
what is the answer to 5--4
Answer:
9
Step-by-step explanation:
if you have two negatives next to eachother, the equation now adds like 5+4. 5+4=9
The sum of two numbers is 58. If there difference is 28, find both numbers
Answer:
y = 15
x = 43
Step-by-step explanation:
this is giving us a system of equations because we know two things:
x + y = 58
x - y = 28
take the second equation and format it where you have simplified it for one variable:
x = 28 + y
(we did this by adding y to both sides)
now substitute this new value of x into the first equation:
28 + y + y = 58
simplify this to get 2y = 30
divide both sides by 2: y = 15
now substitute your new value of y into the second equation:
x = 28 + 15
x = 43
. Determine whether the system of equations has one solution, no solution, or infinitely many solutions.
y = -4x + 2 and y = -4x + 2 *
Answer:
It is clear that both equations are identical. Hence, the solution to the system of equations would contain infinitely many solutions.
Step-by-step explanation:
Given the system of equations
y = -4x + 2
y = -4x + 2
It is clear that both equations are identical. We know that when the system of equations is identical, then the system of equations will have infinitely many solutions.
Hence the given system of equations would contain infinitely many solutions.
solving the system of equations
[tex]\begin{bmatrix}y=-4x+2\\ y=-4x+2\end{bmatrix}[/tex]
Substitute y = -4x+2
[tex]\begin{bmatrix}-4x+2=-4x+2\end{bmatrix}[/tex]
For y = -4x+2
Express y in terms of x
[tex]y=-4x+2[/tex]
Thus, the solution to the system of equations would be:
[tex]y=-4x+2,\:x=x[/tex]
It is clear that x = x is true no matter what. Hence, the solution to the system of equations would contain infinitely many solutions.
Solve for x.
-2.3 (x - 1.2) = -9.66
Enter your answer, as a decimal, in the box.
x = _______
Answer:0.03
Step-by-step explanation:
Identify the slope in the equation y=-7/3x +5 5 -5 7/3 -7/3
Answer:
-7/3
General Formulas and Concepts:
Algebra I
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define
y = -7/3x + 5
Step 2: Break Function
Identify Parts
Slope m = -7/3
y-intercept b = 5
Please help
What is the product?
Answer: 15a^5b^15
a^2 + a^3 = a^5
b^7 + b^8 = a^15
two functions are given below how does the graph of p compare with the graph of q
Answer:
The answer should be choice B.
Step-by-step explanation:
By using the process of elimination, you can cross out choices A and D.
According to the equation, the slope is of p(x) is smaller than q(x), thus q(x) will be steeper than q(x).
The valid answer is B because choice C is wrong.
In AEFG, EF = 44 centimeters and FG = 12 centimeters. Which of the following best describes the possible length, in centimeters, of
AO 44
B. O 32
CO 12
D. 32 < EG < 44
Answer:
The best inequality describes the possible length of EG is 32 < EG < 56 ⇒ B
Step-by-step explanation:
In any triangle
The sum of the lengths of any two sides must be greater than the length of the third sideThe length of any side is greater than the difference between the lengths of the other two sidesIn Δ EFG
∵ EF = 44 cm
∵ FG = 12 cm
→ Find their sum and difference
∴ The sum of their length = 44 + 12 = 56 cm
∴ The difference between their length = 44 - 12 = 32 cm
→ By using the rule above
∵ EG is the third side
∴ EG < 56
∴ EG > 32
→ Write them in one inequality
∴ 32 < EG < 56
∴ The best inequality describes the possible length of EG is 32 < EG < 56
Classify each number according to its value.
-6
4.2 x 10
2.1 x 10
3.1 x 10-2
3.2x 10-5
3.5 x 104
5.8 x 10-3
5.2 x 10-4
Greater than 3.1 * 10-3
Between 3.1 x 10-3
and 4.3 * 10-6
Less than 4.3 x 10-5
Answer:
See below and attached
Step-by-step explanation:
Given numbers
4.2×10^-6, 2.1×10^-3, 3.1×10^-2, 3.2×10^-5, 3.5×10^-4, 5.8×10^-3, 5.2×10^-4Greater than 3.1×10^-3
3.1×10^-2, 5.8×10^-3Between 3.1 × 10^-3 and 4.3 × 10^-5
2.1×10 ^-3, 3.5×10^-4, 5.2×10^-4Less than 4.3 × 10^-5
4.2×10^-6, 3.2×10^-5Answer:
3.2x 10-5 goes in the Less than 4.3 x 10-5 box
Step-by-step explanation:
☆15 POINTS AND MARKED BRAINLIEST IF CORRECT☆
look at the image above to view the question!
Answer:
3125 bacteria.
Step-by-step explanation:
We can write an exponential function to represent the situation.
We know that the current population is 100,000.
The population doubles each day.
The standard exponential function is given by:
[tex]P(t)=a(r)^t[/tex]
Since our current population is 100,000, a = 100000.
Since our rate is doubling, r = 2.
So:
[tex]P(t)=100000(2)^t[/tex]
We want to find the population five days ago.
So, we can say that t = -5. The negative represent the number of days that has passed.
Therefore:
[tex]\displaystyle P(-5)=100000(2)^{-5} = 100000 \Big( \frac{1}{32}\Big) = 3125 \text{ bacteria}[/tex]
However, we dealing within this context, we really can't have negative days. Although it works in this case, it can cause some confusion. So, let's write a function based on the original population.
We know that the bacterial population had been doubling for 5 days. Let A represent the initial population. So, our function is:
[tex]P(t)=A(2)^t[/tex]
After 5 days, we reach the 100,000 population. So, when t = 5, P(t) = 100000:
[tex]100000=A(2)^5[/tex]
And solving for A, we acquire:
[tex]\displaystyle A=\frac{100000}{2^5}=3125[/tex]
So, our function in terms of the original day is:
[tex]P (t) = 3125 (2)^t[/tex]
So, it becomes apparent that the initial population (or the population 5 days ago) is 3125 bacteria.
Answer:
We can express the question in a exponential function
The current population is 100,000.
The population doubles each day.
The exponential function is given by: P(t)=a(r)^t
The current population is 100,000, a = 100000.
The rate is doubling, r = 2.
P(t)=100000(2)^t
As we know that the bacterial population had been doubling for 5 days. Let A represent the initial population. So, the function is:
P(t)=A(2)^t
After 5 days, the population reaches 100,000. So, when t = 5, P(t) = 100000:
100000=A(2)⁵
Now solving for A, we get
A=(100000)/(2⁵)=3125
So, the function in terms of the original day is:
P (t) = 3125 (2)^t
Hence, the initial population is 3125 bacteria.
3125 is the right answer.