Step-by-step explanation:
y=x-2....eqn1
x+y=12.....eqn2
now,
from eqn 1
y= x-2
again, putting value of y in eqn 2
x+y=12x+x-2=122x=12+2x=14/2x=7in eqn 1
y=x-2y=7-2y=5hope it helps..
Give me a topic for my mathematical investigation.
There are a few you can choose from:
Statistics and probability
Geometry
Proofs
Triangles
Circles
Numerical sequences
Number Theory
etc.
HELP PLEASE like I really need help
does the relation show represent a function?
Answer: yes it is hope this helped
plz make brainly
Step-by-step explanation:
Answer:
Hi! The answer to your question is Yes, it does represent a function
Step-by-step explanation:
None of the x's repeat so yes, it represents a function.
☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆
☁Brainliest is greatly appreciated!☁
Hope this helps!!
- Brooklynn Deka
President Kennedy was the fastest random speaker in the world with upwards of 350 words per minute. What is the median of the numbers 3,5,0?
Answer: 3
Step-by-step explanation:
Numbers in least to greatest
0,3,5 middle is 3
Write the opposite of the number. 10 over 7
Answer:
The multiplicative inverse of 10/7 is 7/10.
Step-by-step explanation:
have a good day :)
Bus travels 450 km on 40 L at that rate how far will it travel on 120 L of gas??
Answer:
1350 km yw!
Step-by-step explanation:
what percent represents the part of the model shaded green?
A) 60%
B) 62.5%
C) 66.7%
D) 75%
Answer:
60%
Step-by-step explanation:
Because 3 ÷ 5 = 60% Hope that helps!
please look at the screenshot below 45 points and first one will be brainliest
Answer:
A
Step-by-step explanation:
To find the perimeter you must add all four sides together. Since it's a rectangle, the top and bottom are the same size and the left and right sides are the same size. You add all four together to get the perimeter.
Given: AB || DE
Which can be used to prove ABC - EDC?
a.
AA Similarity Postulate
C.
ASA Similarity Theorem
b.
SSS Similarity Theorem
d.
SAS Similarity Theorem
Answer:
a. AA Similarity Postulate
Step-by-step explanation:
the AA Similarity Postulate says that if two angles in one triangle are congruent to two angles in another triangle, then the two triangles are similar.
AB and ED are parallel, so
∠BCA and ∠ECD are congruent because they're vertical angles∠BAC and ∠CED are congruent because they're alternate interior anglesYou may need to use the appropriate appendix table or technology to answer this question. Health insurers are beginning to offer telemedicine services online that replace the common office visit. A company provides a video service that allows subscribers to connect with a physician online and receive prescribed treatments. The company claims that users of its online service saved a significant amount of money on a typical visit. The data shown below ($), for a sample of 20 online doctor visits, are consistent with the savings per visit reported by the company. 86 28 34 99 77 49 50 43 34 70 42 90 87 68 67 72 87 94 47 76 Assuming the population is roughly symmetric, construct a 95% confidence interval for the mean savings in dollars for a televisit to the doctor as opposed to an office visit. (Round your answers to the nearest cent.) $ to $ Need Help
Answer:
(62.66 ; 67.34)
Step-by-step explanation:
Given the data:
86 28 34 99 77 49 50 43 34 70 42 90 87 68 67 72 87 94 47 76
Using a calculator :
Sample mean, xbar = 65
Sample. Standard deviation s = 22.35
Confidence interval :
Xbar ± standard Error
Standard Error = Tcritical * s/√n
TCritical at 95%, df = 19 = 2.093
Standard Error = 2.093 * (22.35/√20) = 2.339
Lower boundary = 65 - 2.339 = 62.661
Upper boundary = 65 + 2.339 = 67.339
(62.661 ; 67.339)
(62.66 ; 67.34)
Find the area of the circle when the circumference is 26 in
Answer:
"None of the answers are correct."
Step-by-step explanation:
The formula for Area given the circumference is A = [tex]\frac{C^{2} }{4\pi }[/tex]
[tex]\frac{26^{2} }{4\pi } = 53.79437[/tex]
So none of the above are correct
Solve the problem.
If sin = 1/4, find csc .
A) 3/4
B) -1/4
C) 4
D) undefined
Answer:
C) 4
Step-by-step explanation:
By definition, cosecant (csc) is the reciprocal of sine (sin). The reciprocal of 1/4 is equal to C) 4.
Geometry > 0.6 Area of sectors XZQ
a а
The radius of a circle is 4 miles. What is the area of a sector bounded by a 135º arc?
= 4 mi
00
HA
Sma
out
1350
Give the exact answer in simplest form.
square miles
Answer:
4π mi²
Step-by-step explanation:
s = (∅/360) * πr²
s = (135/360) * π(4²)
s = (135/360)(16) * π
s = 4π mi²
Lois is painting a mural on the side of a building. The side of the building is 14 feet by 9
feet. Lois got a deal on paint cans that each cover 5 square feet. How many of these
paint cans will she need to cover the side of the building?
Answer:
I believe it is 29 cans of paint right?
Hope this helps
what is this???????????????????????
Answer:
Without knowing anything else about the problem, the shaded part looks like the cross-sectional area.
HELP LOL!!
What is the independent variable?
Amplitude
Frequency
Tension
Density
Speed
6. What is the dependent variable?
Amplitude
Frequency
Tension
Density
Speed
7. What are the constants? (Choose 3)
Amplitude
Frequency
Tension
Density
Speed
Find the number of paths from A to B. (Each step can only go up or to the right.)
Answer:
Total ways possible = 104 ways
Step-by-step explanation:
Total ways possible = 104 ways
The figure is attached here for understanding.
In the figure, the blank points are those points where we can not reach.
The complex plane is also known as what?
In the question below, you can eliminate two answers quickly? Which two
can you ELIMINATE? Explain why.
Find the level of measurement (nominal, ordinal, interval, or ratio) and type quantitative or qualitative) for the following variable.
a. End-of-year stock classification (high yield, medium yield, or low yield)
b. Length (in feet) of a roll of plastic wrap advertised to be 30 feet long.
c. Temperature (in degrees Celsius)
d. Duration (in minutes) of a call to a customer support line
Answer:
a. Nominal and qualitative.
b. Ratio and quantitative.
c. Interval and quantitative.
d. Interval and quantitative.
Step-by-step explanation:
A level of measurement can be defined as a classification which is used to illustrate the attributes of the values assigned to variables. There are four (4) basic levels of measurement for a variable and these are;
1. Interval: data can be arranged in an ordering scheme and subtracting its differences is meaningful. Examples are year, temperature, time etc.
2. Ratio: data can be arranged in an ordering scheme and subtracting its differences is meaningful with respect to the value of true zero. Examples are height, price, weight, distance etc.
3. Ordinal: data can be arranged in an ordering scheme but subtracting its differences is meaningless or impossible. Examples are happy, sad etc.
4. Nominal: is characterized by data that are non-numerical, comprises of categories, labels or names and can't be arranged in an ordering scheme.
In this scenario, the level of measurement and data type are listed below;
a. End-of-year stock classification (high yield, medium yield, or low yield): the level of measurement is nominal because they are categorized. Also, the type of data is qualitative because it describes the quality of the stock and it's non-numerical in nature.
b. Length (in feet) of a roll of plastic wrap advertised to be 30 feet long: the level of measurement is a ratio because they can be arranged in order. Also, it's a quantitative data because it is numerical in nature.
c. Temperature (in degrees Celsius): the level of measurement is an interval because they can be arranged in order and the difference in value is meaningful. Also, the type of data is quantitative because it is numerical in nature.
d. Duration (in minutes) of a call to a customer support line: the level of measurement is an interval because they can be arranged in order and the difference in value is meaningful. Also, the type of data is quantitative because it is numerical in nature.
Express the product of (2x– 1) and ( 1/2x -2/3)
as a trinomial in simplest form.
Answer:
Solution given:
the product of (2x– 1) and ( 1/2x -2/3)
:(2x-1)(½x-⅔)2x(½x-⅔)-1×(½x-⅔)x²-4/3 x-½x+⅔x²-½x-4/3+⅔x²-½x-[4-2]/3x²-½x-⅔ is a required answer.The product of the given binomials is x²-11x/6+2/3.
The given binomials are (2x– 1) and (x/2 -2/3).
We need to find the product of the given binomials.
How to multiply two binomials?The binomials are multiplied as:
Step 1: Multiply the first term of each binomial.
Step 2: Now multiply the outer term of each binomial.
Step 3: Once this is done, now multiply the inner terms of the binomials.
Step 4: Now the last terms are multiplied.
Now, (2x– 1) × (x/2 -2/3)
=2x × x/2 -1 × x/2 - 2x × 2/3 - 1 (-2/3)
=x²-x/2-4x/3+2/3
=x²+(-3x-8x)/6+2/3
=x²-11x/6+2/3
Therefore, the product of the given binomials is x²-11x/6+2/3.
To learn more about the product of binomials visit:
https://brainly.com/question/11717083.
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Which equation has the same solutions as 2x^2+x-3 = 0?
1. (2x - 1)(x + 3) = 0
2. (2x + 1)(-3) = 0
3. (2x - 3)(x+1)=0
4. (2x+3)(x - 1) = 0
Answer:
given solution
[tex]2x^2+x-3 = 0[/tex]
first one
[tex] {2x}^{2} - 6x - x - 3 = 0[/tex]
second one
[tex] - 6x - 3 = 0[/tex]
third one
[tex] {2x}^{2} + 2x - 3x - 3 = 0[/tex]
fourth one
[tex] {2x}^{2} + 3x - 2x - 3 = 0[/tex]
Step-by-step explanation:
fourth answer is suite for this given solution
answer is 4. (2x+3)(x - 1) = 0
good luck
if you answer this question correctly i'll give you brainliest
the table rewritten
2-10
4-20
6-30
10-50
Answer:
2-----10
4-----20
6-----30
10-----50
Step-by-step explanation:
10 * 5 = 50
which of the following is equivalent (x+1)^2
Answer:
B. x^2 + 1
Step-by-step explanation:
Because squaring the value of 1 does not change its value, the equation would function the same way the original equation if x was the only value squared.
Using the table below, calculate the average rate of change over the interval [-1, 1).
х
1
-2
-1
-1
-2
0
-1
у
2
CA. 4
с В.
-4
OC. -2
thing
D. 2
Answer:
2.
Step-by-step explanation:
I have the same thing as u. it's 2.
The graph below shows the balance remaining on Jason's loan after he makes each payment. Jason's Loan Balance y 2,100 1,800 1,500 1,200 Balance Remaining (dollars) 900 600 300 0 1 2 3 4 5 6 7 8 9 10 11 12 Number of Payments Made Based on this graph, what will be the balance remaining on Jason's loan after he makes the 12th payment? A $750 B $150 C $450 D $300
Answer:
D $300
Step-by-step explanation:
I did a test with that question and got it correct
Answer:
D $300 Step-by-step explanation:
. A store increases profits by marking up the price of soda by 15%. Which expression represents the new price of soda if the original cost is s dollars? A) 0.15 B В 1.15$ © 0.855 Ds + 15
Answer: A
Step-by-step explanation:
ANSWER FAST
.Give the value of a.
a - 15 = 21
Answer:
a=36
Step-by-step explanation:
a - 15 = 21
+15 +15
a = 36
harrison bought a 10 foot ramp to load his dirt bike into the back of his truck. the ramp hooks to the 3 foot high tailgate. how far away from the tailgate doe the ramp sit in the ground?
Answer:
9.54 feet
Step-by-step explanation:
Using Pythagoras rule :
Length of ramp = 10 feets = hypotenus
Hypotenus² = opposite² - adjacent²
d² = 10² - 3²
d² = 100 - 9
d² = 91
d = √91
d = 9.5393920
d = 9.54 feets
Bethany is making a rectangular fenced- in area for her rabbit in her yard. The area measures 4 3/4 feet wide by 2 yards long.
what's the total length of fencing that Bethany will need in feet?
Answer:
The total length of fencing that Bethany will need is 21.5 feet.
Step-by-step explanation:
Since Bethany is making a rectangular fenced- in area for her rabbit in her yard, and the area measures 4 3/4 feet wide by 2 yards long, to determine what's the total length of fencing that Bethany will need in feet the following calculation must be performed:
1 yard = 3 feet
2 yards = 6 feet
3/4 = 0.75
4.75 x 2 + 6 x 2 = X
9.5 + 12 = X
21.5 = X
Therefore, the total length of fencing that Bethany will need is 21.5 feet.