The solutions to the system of equations are given as follows: (1, -3) and (-4,2).
What is a system of equations?A system of equations is when two or more variables are related, and equations are built to find the values of each variable.
The equations are given as follows:
(x + 3)² + (y + 2)² = 17.x + y = -2.From the second equation:
y = -2 - x.
Replacing in the first:
(x + 3)² + (y + 2)² = 17.
(x + 3)² + (-2 - x + 2)² = 17
x² + 6x + 9 + x² = 17
2x² + 6x - 8 = 0
2(x² + 3x - 4) = 0
2(x + 4)(x - 1) = 0.
Then the solutions for x are:
x + 4 = 0 -> x = -4.x - 1 = 0 -> x = 1.The solutions for y are:
When x = 1, y = -2 - 1 = -3.When x = -4, y = -2 -(-4) = 2.Hence the solutions are:
(1, -3) and (-4,2).
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Help needed ASAP will give brainliest! Pls help me
Answer:
1740 N
Step-by-step explanation:
To find the force, you need to multiply the mass by the acceleration.
(60.0 kg) × (29.0 m/s²) = 1740 N
The force will be 1740 N.
Alvin incorrectly simplified 4 x 42 and got an answer of 166.
What did Alvin do wrong? Explain and then solve the
problem correctly.
the answer is 168
Step-by-step explanation:
you times 4 by 2 you get 8.
now you got to times 4 by 40 and you get 160
now you add 8 to 160 you will get 168
Find the slope of the tangent line to the parabola at the point.
The equation of the tangent line to the parabola at the point (1,5) is y = 4x + 1.
To find the slope of the tangent line to the parabola at the point (1,5), we need to find the derivative of the equation y = 6x - x² and evaluate it at x = 1.
Taking the derivative of y with respect to x:
dy/dx = d(6x - x²)/dx
= 6 - 2x
Now, we can substitute x = 1 into the derivative to find the slope at that point:
slope = 6 - 2(1)
= 6 - 2
= 4
So, the slope of the tangent line to the parabola at the point (1,5) is 4.
To find the equation of the tangent line, we need to use the point-slope form of a line.
The equation is given by:
y - y₁ = m(x - x₁)
Substituting the values we have:
y - 5 = 4(x - 1)
Expanding and simplifying:
y - 5 = 4x - 4
Moving the constant term to the other side:
y = 4x + 1
Therefore, the equation of the tangent line to the parabola at the point (1,5) is y = 4x + 1.
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Complete question =
Find the slope of the tangent line to the parabola at the point (1,5). y = 6x-x². find an equation of the tangent line.
Slope and y-Intercept
Find the slope and y-intercept of a line that passes through these points.
5. (2, 2) and (3, 0)
6. (1,5) and (4, 10)
7. (8, 2) and (-8, 6)
The slope and y-intercepts of each line, respectively, are:
5. m = -2; b = 6 6. m = 5/3; b = 10/3 7. m = -1/4; b = 4
What is the Slope of a Line?Slope of a line is calculated as, m = change in y / change in x.
5. Given (2, 2) and (3, 0):
Slope of the line (m) = change in y / change in x = 2 - 0 / 2 - 3
m = 2/-1
m = -2
To find the y-intercept (b), substitute m = -2 and (x, y) = (2, 2) into y = mx + b:
2 = -2(2) + b
2 = -4 + b
2 + 4 = b
b = 6
6. Given (1,5) and (4, 10):
Slope of the line (m) = change in y / change in x = 10 - 5 / 4 - 1
m = 5/3
To find the y-intercept (b), substitute m = 5/3 and (x, y) = (1, 5) into y = mx + b:
5 = 5/3(1) + b
5 - 5/3 = b
b = (15 - 5)/3
b = 10/3
7. Given (8, 2) and (-8, 6):
Slope of the line (m) = change in y / change in x = 6 - 2 / -8 - 8
m = 4/-16
m = -1/4
To find the y-intercept (b), substitute m = -1/4 and (x, y) = (8, 2) into y = mx + b:
2 = -1/4(8) + b
2 = -2 + b
2 + 2 = b
b = 4
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Hey guys!
Help me ....
Question is in the attachment....
Don't copy and don't spam
Don't answer if you don't know...
I need to understand it... please explain me
Thank You!
The slope of line r is -1/2
The equation of line q is given as
\(-2x + y =1\)
Make y the subject
\(y =1 + 2x\)
Rewrite the equation, as follows:
\(y =2x + 1\)
The slope of the above equation is:
\(m = 2\)
Line r is perpendicular to line q.
So, the slope (m2) of line r is calculated as:
\(m_2 = -\frac 1m\)
This gives
\(m_2 = -\frac 12\)
Hence, the slope of line r is -1/2
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given a multi-value attribute with a variable number of values, for which we need to process independently the values, it is recommended to consider a new dependent entiy to represent the values
Yes, when dealing with a multi-value attribute with a variable number of values that need to be processed independently.
Yes, when dealing with a multi-value attribute with a variable number of values that need to be processed independently, it is recommended to consider creating a new dependent entity to represent the values. This can help to simplify the design and make it easier to manage and maintain. The new entity can be linked to the original entity through a relationship, allowing each value to be processed independently while still maintaining the integrity of the data. Overall, this approach can improve the efficiency and effectiveness of the system, making it easier to work with and providing better results for the end user.
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sammy has a -foot ladder, which he needs to climb to reach the roof of his house. the roof is feet above the ground. the base of the ladder must be at least feet from the base of the house. how far is it from the top of the ladder to the edge of the roof? draw a sketch.
It is not possible to reach the top of the ladder to the edge of the roof.
We can solve this problem using the Pythagorean theorem, which states that for a right triangle, the sum of the squares of the two shorter sides is equal to the square of the length of the hypotenuse (the longest side).
In this case, the ladder is the hypotenuse of a right triangle, and the distance from the base of the ladder to the house and the distance from the top of the ladder to the edge of the roof are the two shorter sides.
Let x be the distance from the top of the ladder to the edge of the roof. Then, we can write:
\(10^{2}\) = \((1.5)^{2}\) + \(x^{2}\) + \(12^{2}\)
Simplifying and solving for x, we get:
100 = 2.25 +\(x^{2}\) + 144
\(x^{2}\) = 100 - 2.25 - 144
\(x^{2}\) = -46.25
Since x represents a distance, which must be positive, this means that there is no solution to the equation. Therefore, it is not possible for Sammy to reach the edge of the roof with his 10-foot ladder while keeping the base of the ladder at least 1.5 feet from the base of the house.
Correct Question :
Sammy has a 10-foot ladder, which he needs to climb to reach the roof of his house. the roof is 12 feet above the ground. the base of the ladder must be at least 1.5 feet from the base of the house. how far is it from the top of the ladder to the edge of the roof?
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The number of minutes, m, that it takes to
print a batch of newspapers is inversely
proportional to the number of printers used,
n.
The equation of proportionality is m =
100
n
Calculate how long it will take to print a
batch of newspapers if 20 printers are
used.
If your answer is a decimal, give it to 1 d. p.
It will take 5 minutes to print a batch of newspapers if 20 printers are used.
What is proportionality?
Proportionality is a mathematical relationship between two variables, where one variable is a constant multiple of the other. In other words, two quantities are proportional if they maintain a constant ratio to each other, meaning that as one quantity increases or decreases, the other quantity changes in the same proportion.
We are given that the time it takes to print a batch of newspapers, m, is inversely proportional to the number of printers used, n, and the equation of proportionality is:
m = k/n
where k is a constant of proportionality. We are also given that when k = 100, the equation is satisfied. So we can substitute k = 100 into the equation to get:
m = 100/n
To find the time it will take to print a batch of newspapers if 20 printers are used, we can substitute n = 20 into the equation:
m = 100/20 = 5
So it will take 5 minutes to print a batch of newspapers if 20 printers are used. Rounded to 1 decimal place, the answer is 5.0 minutes.
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25. find the exact value of each expression. a. cos(-10pi/3)
The exact value of the expression cos(-10pi/3) is -1/2.
How to find the exact value of the expression?To find the exact value of cos(-10pi/3), follow these steps:
1. Determine the equivalent positive angle: Since the cosine function has a period of 2pi, we can add multiples of 2pi to the angle until we get a positive angle. In this case, we add 4pi (since 4pi = 12pi/3) to get the equivalent positive angle:
(-10pi/3) + (12pi/3) = 2pi/3.
2. Find the cosine value of the positive angle: Now, we find the cosine value of the positive angle 2pi/3. Using the unit circle, we can determine that cos(2pi/3) = -1/2.
So, the exact value of the expression cos(-10pi/3) is -1/2.
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Explain why i^3 is equal to i^47? Why
Answer:
i is probably 1.
Step-by-step explanation:
1^3 is equal to 1
1^47 is equal to 1
What is 0.4 in a fraction?
What is 0.64 in a fraction?
What is 2.75 in a fraction?
Pls I need it now and pls SHOW YOUR WORK
Answer:
2/5, 16/25, and 11/4
Step-by-step explanation:
40/100 to 4/10 to 2/5
64/100 to 32/50 to 16/25
275/100 (by 25) to 11/4
PLEASE IM IN CLASS PLEASE
Answer:
d
Step-by-step explanation:
GO QUICK
Answer:
Triangular Prism, (D)
Step-by-step explanation:
Is 4 ÷ 3/2 the same as 4 ÷ 2/3. Explain
a backyard garden has an area of 6.59 square meters. how many square centimeters is this? express your answer in scientific notation and to three significant figures.
There are 65900 square centimetres present in a backyard garden that has an area of 6.59 square meters.
Scientific notation is the way through which a very small or a very large number can be written in shorthand. In scientific notations when a number is between 1 and 10s, it is multiplied by a power of 10.
For example, 6,500,000,000,000 can be written as 6.5 × 10¹².
To calculate a square meter value to the related value in cm², just multiply the quantity in m² by 10000 (the conversion factor). Here is the formula for it:
Value in cm² = value in m² × 10000
We need to convert 6.59 m² into cm². Using the conversion formula above, we will get:
Value in cm² = 6.59 × 10000 = 65900 cm²
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Round 771 to the nearest hundred
Answer:
800
Step-by-step explanation:
700________________750___________771________800
771 is over 750 so it would be rounded to 800
Answer: 800
Step-by-step explanation:
771 is 50+ thus it round over to 800.
What is x² + x + 49 on 2020 edg?
Answer:
259
Step-by-step explanation:
we want to find a 95% confidence interval for the standard deviation of a large dataset, given a sample. can the bootstrap method be used? group of answer choices
The Bootstrap Method is straightforward and straightforward to comprehend. First, it chooses randomly from the original sample to produce bootstrap samples from our initial sample.
After that, it uses summary statistics like variation, standard deviation, mean, and so on to get replicates, which is how we can calculate a confidence interval from that sample.
Thus, the answer is "Yes."
The bootstrap method is a resampling method that uses replacement sampling to estimate population statistics. It can be used to estimate standard deviation and mean summaries.
Which scenarios call for the use of bootstrapping?Remember that bootstrapping isn't only valuable for computing standard blunders, it can likewise be utilized to build certainty spans and perform speculation testing. When working with data that doesn't seem to lend itself to conventional methods, always remember bootstrapping techniques.
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Full Question = We want to find a 95% confidence interval for the standard deviation of a large dataset, given a sample.
Can the bootstrap method be used?
Group of answer choices
yes
no
I need help with this question! I don’t understand this mess at all.
so line ab is parrallel and so is xy it is asking you to prove that angle 8 + angle 9 = 180
so since they are parrallel 8 is equal to 12 or you could do 9 is equal to 5 then you can see that they sit on the same straight line so angle9 + angle8 = 180 degrees
Abstract art. A painter has four different jars of paint colors available, exactly one of which is purple. She wants to paint something abstract, so she blindfolds herself, randomly dips her brush, and paints on the canvas. She continues trying paint jars until she finally gets some purple onto the canvas (her assistant will tell her when this happens). Assume that she does not repeat any of the jars because her assistant removes a jar once it has been used.
Required:
a. How many outcomes are in the sample space? What are they?
b. How many different events are there?
c. Another painter borrows the four jars of paint and performs the same experiment; i.e., selects paint at random, but she allows the jars to be reused, perhaps over and over many times (assume each contains an unlimited amount of paint). List a few of the outcomes in the sample space, when repetitions are allowed.
d. In the scenario from part c, write an expression for the sample space.
a)The sample space is the set of all possible outcomes of a random experiment. Here the painter has 4 jars of paint and he picks randomly until he selects the jar of purple paint. Since the purple jar can be any of the 4 jars, the number of outcomes is 4.
The possible outcomes are O1, O2, O3, and O4. O1 represents the event that the purple jar is the first jar, O2 represents the event that the purple jar is the second jar,
O1, O2, O3, and O4. So the number of different events is given by: 2^4 - 1 = 15. The number of different events is 15. We subtract 1 from 2^4 because we are not including the empty set.c)When repetitions are allowed, the possible outcomes are:purple paint from the first jar, purple paint from the second jar, purple paint from the third jar, purple paint from the fourth jar,
non-purple paint from the first jar, non-purple paint from the second jar, non-purple paint from the third jar, non-purple paint from the fourth jar. So the sample space can be {P1, P2, P3, P4, N1, N2, N3, N4}d)An expression for the sample space is {P1, P2, P3, P4, N1, N2, N3, N4}.
The sample space is the set of all possible outcomes of the experiment. So we list all the possible outcomes in the set notation separated by commas. We use P1, P2, P3, P4 to represent the event that the purple paint comes from the first, second, third and fourth jars respectively, and N1, N2, N3, N4 to represent the event that the non-purple paint comes from the first, second, third and fourth jars respectively.
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Which point best represents V68?
A)
point A
B)
point B
point
D)
point D
Answer:
C.
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
square root of 68 is 8.246
A car that travels 20 miles in $$ hour at constant speed is traveling at the same speed as a car that travels 30 miles in $$ hour at a constant speed. Explain or show why. You may use the interactive double number line or table to help communicate your thinking.
Answer:
2/3 of 30 miles in 3/4 hours is the same as 20 miles in 1/2 hour.
Step-by-step explanation:
30/1x2/3
60/3 = 20
3/4x2/3
6/12 = 1/2
brainliest pls
What’s the answer plssss
Answer:
130 m
Step-by-step explanation:
See the attached, pleasantly presented, worksheet.
Solve for x in 4^2x=2^5-x
Answer:
x=1.88
Step-by-step explanation:
x=1.88
Step-by-step explanation:
i really need help with this PLEASE PLEASE PLEASE
Answer:Arc Length = 40
Step-by-step explanation:
Compare the box plots for two data sets.
Which statement is true?
-
Set A
Set A
TI
Set B
20
22
24 26 28
30
32 34
36
38 40
The range for Set B is greater than the range for
Set A
The median for Set A is greater than the median
for Set B.
The ranges for both sets are equal
The medians for both sets are equal.
Answer:
The median for Set A is greater than the median
for Set B.
Step-by-step explanation:
From the boxplot attached, we can deduce the following :
Median (vertical line in between the box on a boxplot).
Median, set A = 30
Median, set B = 29
Range = (Maximum - Minimum. Value)
Set A :
Maximum = 35 ; Minimum = 21
Range = 35 - 21 = 14
Set B :
Maximum = 37 ; Minimum = 24
Range = 37 - 34 = 3
Hence, from the options, the only correct statement is The median for Set A is greater than the median for Set B.
ASAP ASAP HELP HELP ASAP
Answer:
B' (3,4)
All you need to do is flip the ordered pair
make p the subject of the formula A=p+prt÷100
Answer:
p = a - prt x 100
Step-by-step explanation:
a = p + prt ÷ 100
a - prt = p ÷ 100
a - prt x 100 = p
Hope this helps. :)
Which statement is true regarding the traits of scatter plots
Answer: A
Step-by-step explanation:
JUST TOOK THE QUIZ
In circle A, marc BC is 61° and marc EF is 76°: Points B, C, E, and F lie on Circle A. Lines BE and CF pass through point D, creating angle EDF. The measure of arc BC is 61 degrees, and the measure of arc EF is 76 degrees. What is m∠FDE? 30.5° 38° 76° 68.5°
The measure of angle FDE is 68.5°
the correct answer is an option (d)
Consider the following figure.
We know that whenever two chords cut across a circle, the resulting angle is equivalent to half of the sum of the measurements of the arc the angle intersects and that which the angle vertical to the first angle intercepts.
Here, chords BE and FC cuts across the circle forming ∠FDE.
According to above statement, the measure of ∠FDE would be equal to the sum of the measurements of the arc BC and FE
⇒ m∠FDE = 1/2( Arc BC + Arc FE)
⇒ m∠FDE = 1/2 (61° + 76°)
⇒ m∠FDE = 137/2
⇒ m∠FDE = 68.5°
Therefore, the correct answer is an option (d)
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Answer:
The measure of angle FDE is 68.5° (D)
Step-by-step explanation:
I TOOK THE TEST
Explain with reference to a right-angled triangle why the tangent of 90° is undefined.
Answer:
Step-by-step explanation:
In a right-angled triangle, one of the angles is always 90° (the right angle). The tangent of an angle is defined as the ratio of the length of the opposite side to the length of the adjacent side.
However, in the case of a right-angled triangle, there is no side opposite to the 90° angle. The opposite side is the side that is opposite to one of the acute angles, and the adjacent side is the side that is adjacent to that acute angle. Since there is no acute angle opposite to the 90° angle, there is no opposite side to the 90° angle.
Therefore, the tangent of 90° is undefined because there is no opposite side to the 90° angle in a right-angled triangle. Mathematically, we can say that:
tan(90°) = opposite/adjacent = undefined/adjacent
Since the opposite side is undefined, the value of the tangent is undefined.