Consider the system of linear equations below.
3x + y = -4
--5x + y = 8
Graph on a graph paper and
Describe the graph
A) they are parallel
B) the concide
C) they intersect
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Related Questions
What is the equation of a line perpendicular to -x +2=y that intersects the line at (-1.5, 3.5)?
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Answer:
y=x+5
Step-by-step explanation:
y-y1=m(x-x1)
y=-x+2
slope of y=-x+2 is -1, perpendicular slope is 1
y-3.5=1(x-(-1.5))
y-3.5=x+1.5
y=x+5
Help!
1. What is the slope of PA?
2. What is the slope of line N?
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2. 4/3
HOPE THAT HELPS!!
what is 7/9 - 1/3 simplified
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Answer:
4/9 is the answer
Step-by-step explanation:
you're welcome
how do I solve this?
Answers
Answer:
pythagoren therom, law of sine, cosine, and tangent
Step-by-step explanation:
Find the volume and solve the application.
A mason's assistant's rate of pay is $0.95 per cubic foot of earth moved. He digs a trench 1.5 ft. wide by 1 ft. deep by 150 ft. in length. What is his pay for this job?
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1.5ft * 1ft * 150ft = 225ft^3
225 * $0.95 = $213.75 pay for the job
Which sum or difference is modeled by the algebra tiles
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Answer:
i believe the answer that you picked is right ....i think ^^
Miguel ate 1/4 of a pizza in 1/2 of an hour. How much pizza will Miguel eat in one hour?
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Answer:
he will eat 2/4 or 1/2 in 1 hour
Step-by-step explanation:
you spin the spinner twice what is the probability of landing on a 6 and then landing on a number greater than 4
p(6,then>4)=
a)1/4
b)1/6
c)1/8
d)1/10
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(EASY) Which best describes the relationship between the lines?
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What is the y-intercept of the graph of 4x-10y =20???
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10y = 4x - 20
y = 4/10x - 2
Solution: y intercept is -2
Evaluate the expression 2 (b + c) / a if a = 3, b = 5, and C = 1
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Answer: 4
Step-by-step explanation:
1. Replace the variables with their corresponding numerical values
2(5+1)/3
2. Evaluate the expression within the parenthesis
2(6)/3
3. Multiply the numerator
12/3
4. Simplify
4
If the population of a certain county was 100,000 in 1998 and 110,429 in 2008, and if the formulay = P0ehtapplies to the growth of the county's population, estimate the population of the county in 2023. (P0 is the initial population. Round your value of h to four decimal places. Round your answer to the nearest whole number.)
Answers
Answer:
126807 people
Step-by-step explanation:
Given;
P= Poe^ht
Where;
P= population at time t
Po= population at the beginning
h= growth constant
t= time
1998- 2008 is ten years.
110429= 100,000e^10h
1.1 = e^10h
ln(1.1) = lne^10h
0.095 = 10h
h= 0.0095
In 2023, t = 25 years
P= 100,000e^(0.0095 × 25)
P= 126807 people
Which statement about these triangles is true?
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Answer:
It's the last one
I hoped that helped
A bucket contains 40 red balls, 25 black balls, and 35 white balls. Two balls are drawn at random. What is the probability that the two balls are black and red?
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Answer:
[tex]Probability = \frac{1}{5}[/tex] or [tex]Probability = 0.2[/tex]
Step-by-step explanation:
Given
[tex]Black = 25[/tex]
[tex]White = 35[/tex]
[tex]Red = 40[/tex]
Required
Determine the probability of selecting Black and Red
First, we need to calculate the number of red and black balls
The probability is calculated as thus:
[tex]Probability = P(Black\ and \ Red) \ or\ P(Red\ and \ Black)[/tex]
Convert to mathematical expressions
[tex]Probability = [P(Black) *P(Red)] + [P(Red) *P(Black)][/tex]
Solve for each probaility;
[tex]P(Black) = \frac{Black}{Total} = \frac{25}{100}[/tex]
[tex]P(Red) = \frac{Red}{Total} = \frac{40}{100}[/tex]
So, we have:
[tex]Probability = [P(Black) *P(Red)] + [P(Red) *P(Black)][/tex][tex]Probability = [\frac{25}{100} *\frac{40}{100}] + [\frac{40}{100} *\frac{25}{100}][/tex]
[tex]Probability = [\frac{1000}{10000}] + [\frac{1000}{10000}][/tex]
[tex]Probability = [\frac{1}{10}] + [\frac{1}{10}][/tex]
[tex]Probability = \frac{1+1}{10}[/tex]
[tex]Probability = \frac{2}{10}[/tex]
[tex]Probability = \frac{1}{5}[/tex]
or
[tex]Probability = 0.2[/tex]
What's the solution to -182=2(1+2x)-2
Answers
2*1=2
2*2x=4x
-182=4x+2-2
-182=4x
-45.5=x
Answer: [tex]x = -\frac{91}{2}[/tex]
Step-by-step explanation:
If you have any questions, feel free to ask :)
Step 1: Add [tex]2[/tex] to both sides.
[tex]-182 + 2 = 2(1 + 2x)[/tex]
Step 2: Simplify [tex]-182 + 2[/tex] to [tex]-180[/tex].
[tex]-180 = 2(1 + 2x)[/tex]
Step 3: Divide both sides by [tex]2[/tex].
[tex]-\frac{180}{2} = 1 + 2x[/tex]
Step 4: Simplify [tex]\frac{180}{2}[/tex] to [tex]90[/tex].
[tex]-90 = 1 + 2x[/tex]
Step 5: Subtract [tex]1[/tex] from both sides.
[tex]-90 - 1 = 2x[/tex]
Step 6: Simplify [tex]-90 - 1[/tex] to [tex]-91[/tex].
[tex]-91 = 2x[/tex]
Step 7: Divide both sides by [tex]2[/tex].
[tex]-\frac{91}{2} = x[/tex]
Step 8: Switch sides.
[tex]x = -\frac{91}{2}[/tex]
~I hope I helped you :)~
eighteen individuals who use a particular form of social media were assigned a new user interface to use when logging into their accounts. after using the new user interface for a week, each individual was asked to rate how easy or hard the new user interface was to use on a scale from 1 (extremely easy) to 9 (extremely hard). which of the following correctly identifies why this is not a well designed experiment?
A. There was a lack of control because not all individuals in the study used login passwords of the same length
B. The individuals may not have been randomly selected
C. There was not enough replication because the individuals used the new user interface for only one week.
D. there was a lack of control because not all individuals in the study use social media
E. the study was not comparative- only one treatment was used.
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Answer:
E: The study was not comparative—only one treatment was used.
Step-by-step explanation:
Well-designed experiments should involve comparisons of at least two treatment groups, one of which could be a control group.
A well-designed experiment investigates design features that achieve the research to rule out sources of variation as reasons for the observed relationship between both the independent variable(s) and the predictor variables.
Studies that are well should include a comparison of at least two treatments, one of which may be a controlled study.Eighteen people using a specific type of social media are given a different user interface to utilize when login onto their account. After a day of just using the new user interface, each participant was asked to rate as difficult or easy it was to use the new interface on a scale of 1 to 9.The study was not properly comparative since it identified just one treatment that was not used as the well-designed study.Therefore, the final answer is "Option E".
Learn more:
brainly.com/question/11496679
Mr. Jones and Mr. Smith occupy adjacent beds in the ICU. Smith needs his IV changed every 15 hours. Jones needs his IV changed every 9 hours. The nurse changes both IVs together when a 12-hour clock reads 3:00. What does that clock read the next time the nurse changes IVs together?
a. 9:00
b. 12:00
c. 3:00
d. 6:00
Answers
Answer:
b
Step-by-step explanation:
And a bag of M&Ms there are three red M&Ms for every two yellow M&Ms how many yellow M&Ms would there be if the ratio stay the same and you had 15 red M&Ms
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Answer:
30 yellow m&m's
Step-by-step explanation:
Geometry question number 21
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Step-by-step explanation:
1st) Distribute 8 with x and 8 with -1 which will give you
8x-8=5x-35
2nd) Use opposite operation and add 8 both sides
8x-8=5x-35
+8 +8
---------------
8x=5x-27
3rd) subtract 5x from both sides
8x=5x-27
-5x= -5x
_______
3x=-27
4th) Divide 3 from both sides so -27 by 3
3x=-27
_ _
3 3
ANSWER X=-9
Glenn’s favorite number is very special because it reminds him of the day his daughter, Sarah, was born. The factors of this number do not repeat, and all of the prime numbers are less than . What is Glenn’s number? When was Sarah born? BRAINLIEST AND POINTS
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Answer:
2/3/10
Step-by-step explanation:
the number is such that its factors do not repeat and factors are all prime numbers less than 12.
Given the diagram below, solve for x and y
Answers
Answer:
where is the diagram?
Step-by-step explanation:
Answer:
Option A. x=30,y=42
Step-by-step explanation:
SAT verbal scores are normally distributed with a mean of 430 and a standard deviation of 120 (based on the data from the College Board ATP). If a sample of 15 students is selected randomly, find the probability that the sample mean is above 500. Does the central limit theorem apply for this problem?
Answers
Answer:
The value is [tex]P(X > 500 ) = 0.011942[/tex]
Step-by-step explanation:
From the question we are told that
The mean is [tex]\mu = 430[/tex]
The standard deviation is [tex]\sigma = 120[/tex]
The sample size is n = 15
Generally the probability that the sample mean is above 500
Gnerally the standard error of mean is mathematically represented as
[tex]s = \frac{\sigma }{ \sqrt{n} }[/tex]
=> [tex]s = \frac{ 120 }{ \sqrt{15} }[/tex]
=> [tex]s = 30.984[/tex]
Generally the probability that the sample mean is above 500
[tex]P(X > 500 ) = P( \frac{X - \mu }{\sigma_x} > \frac{500 - 430 }{ 30.984 } )[/tex]
[tex]\frac{X -\mu}{\sigma } = Z (The \ standardized \ value\ of \ X )[/tex]
[tex]P(X > 500 ) = P( Z > 2.259 )[/tex]
=> [tex]P(X > 500 ) = P( Z > 2.259 )[/tex]
From the z table the area under the normal curve to the right corresponding to 2.259 is
[tex]P( Z > 2.259 ) = 0.011942[/tex]
=> [tex]P(X > 500 ) = 0.011942[/tex]
A bag contains 4 red marbles, 3 blue marbles and 7 green marbles. If three marbles
are drawn out of the bag, what is the probalbility, to the nearest 1oth of a percent, that
all three marbles drawn will be green?
Answers
Answer:
I don't understand the question.
Step-by-step explanation:
Answer:
Frequency and period are distinctly different, yet related, quantities. Frequency refers to how often something happens. Period refers to the time it takes something to happen. Frequency is a rate quantity.
Step-by-step explanation:
Solve x2 + 12x = –20 by completing the square.
Answers
Answer:
Solve x2 + 12x = –20 by completing the square.Add to both sides of the equation. The value of in this equation is 36Write the left side of the equation as a binomial squared. The left side of the equation becomes (x+6)2.Use the square root property of equality.Isolate the variable: x = -10 and -2
Step-by-step explanation:
What is 4/9 rounded to it's closest estimate
Answers
Answer:
1/2
Step-by-step explanation:
4/9 is .444
1/2 is .5
1/3 is .3333
4/9 is closer to being 1/2 than 1/3
Answer:
0.4
Step-by-step explanation:
[tex]\frac{4}{9}[/tex] ≈ 0.4
10 points for correct answer and giving brainliest
Answers
Answer:
A
Step-by-step explanation:
We know it cant be -6 as that would be a range and since the circle on the end is hallow it wont be less or equal to rather just less than and the since the next one is 2 and its solid circle it has to be less than or equal too
Answer:
A. -9 < x ≤ -2
General Formulas and Concepts:
Algebra I
Domain is the set of x-values that can be inputted into function f(x)Step-by-step explanation:
According to the graph, the line's x-values span from -9 to 2. Since -9 is an open dot, it is exclusive in the domain. Since 2 is a closed dot, it is inclusive in the domain:
(-9, 2] or -9 < x ≤ -2
Suppose that $7000 is placed in a savings account at an annual rate of 5.6%, compounded semi-annually. Assuming that no withdrawals are made, how long will it take for the account to grow to $8036?
Answers
Answer:
2.5 years
Step-by-step explanation:
Amount= $8036
Principal= $7000
Rate =5.6%
t= ?
n= 2
A= P(1 + r/n)^nt
8036= 7000(1 + 0.028)^2t
1.148= (1 + 0.028)^2t
log(1.148) = log (1 + 0.028)^2t
0.05994= 2t × 0.01199
t= 2.5 years
It will take t = 2.5 years for the account to grow to $8036.
Given that,
Total saving amount = $7000
Annual rate = 5.6% = 0.056
We have to determine,
Assuming that no withdrawals are made, how long will it take for the account to grow to $8036.
According to the question,
Amount = $8036
Principal = $7000
Rate = 0.056
n = 2
To find the value of time t calculation done in single unit,
[tex]A = P (1+ \frac{r}{n} )^{nt} \\\\8036 = 7000 (1+\frac{0.056}{2})^{2t} \\\\\frac{8036}{7000} = (1+0.028})^{2t} \\\\1.148 = (1+0.028)^{2t} \\\\[/tex]
Taking log on both sides,
[tex]log(1.148) = log(1+0.028)^{2} \\\\0.0599 = 2t\times0.0119\\\\\frac{0.599}{0.022} = t\\\\t = 2.5 years[/tex]
Hence, It will take t = 2.5 years for the account to grow to $8036.
To know more about Division click the link given below.
https://brainly.com/question/20648334
HELP NOW !!!!!!!! solve ∣x − 6∣= 2
Answers
Answer:
x=8
Step-by-step explanation:
<3
Answer:
{8,4} can you mark as brainliest
Lin runs 12 laps around a track in 15 minutes.
Answers
Answer:
1.25
Step-by-step explanation:
15/12
Kim's new printer can print 480 pages in 6 hours. In pages per hour, what is the printing rate of Kim's new printer?
Answers
Answer:
80 pgs per hour
Step-by-step explanation:
480 divided by 6 = 80
