Answer:
-3x^2-3
Step-by-step explanation:
1: 3x^2
2: -3x^2
3:
y=x² + 2x - 2
iii) Find the values of x
when y = 2
Answer: 1.236, -3.236 or [tex]-1-\sqrt{5} and -1+\sqrt{5}[/tex]
Step-by-step explanation:
2 = x^2 + 2x -2
x^2 + 2x - 2 -2
x^2 +2x -4
put into quandratic formula
Write the equation of a parabola with x-intercepts at (3, 0) and (9, 0) that
passes through the point (10, -7).
The parabola's equation is y = -x2 + 12x - 27.
A parabola is a point's location where the focus and a fixed point's distance from a fixed line, known as the directrix, are the same.
A parabola's equation is in quadratic form.
Thus, it is stated as:
Y = Ax2, Bx, and C
Located at (3, 0):
0 = a(3²) + b(3) + c
9a + 3b + c = 0 (1) (1)
Located at (9, 0):
0 = a(9²) + b(9) + c
81a + 9b + c = 0 (2) (2)
Located at (10, -7):
-7 = a(10²) + b(10) + c
100a + 10b + c = -7 (3) (3)
Equations 1, 2, and 3 are solved to yield: a = -1, b = 12, and c = -27.
Consequently, the parabola's equation is y = -x2 + 12x - 27.
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What is the x-intercept for function f? f(x) = −2/3x + 8
Answer:
x = 12 is the x-axis intercept
Step-by-step explanation:
'x-intercept' is short for 'x-axis intercept' <==== when the graph crosses the x axis, y = 0 so put y = 0 in the equation
y = -2/3 x + 8
0 = -2/3 x + 8
-8 = - 2/3x
x = 8 * 3/2 = 12
Solve for x. PLS HELP MEEE
Answer: ask candice
Step-by-step explanation:
Answer:
x = 75
Step-by-step explanation:
The triangle on the right is an equilateral triangle. This means each angle is 60 degrees.
The bottom angle which goes over both triangles is marked as a right angle (90 degrees). Given that the part of that angle in the equilateral triangle is 60 degrees, the rest of the angle (i.e. the part of the angle in the other triangle) is 30 degrees.
It is implied by the markings that the angle x = the other angle at the top (although this should be clearer). Assuming this is the case, we can use the rule that angles in a triangle sum to 180 degrees, to say that:
x + x + 30 = 180
Combine like terms, rearrange and simplify:
2x + 30 = 180
2x = 150
x = 75
Find the circumference.
Use 3.14 for π.
G
r = 3 ft
C = [?] ft
C = πd
Answer:
c=2πr
c=2π3
put it in calculator
=18.8ft (1dp)
If ST = 65, TR= 40, and WU = 16, find the length of VW. Round your
answer to the nearest tenth if necessary.
Answer:
ST/VW = TR/WU
40/16 = 65/VW
2.5 = 65/VW
2.5VW = 65
VW = 65/2.5
VW = 26
Given f(x) = 3x³ + kx- 10, and x - 2 is a factor of f(x), then what is the value of k?
Polynomial equations are used to encode a wide range of problems, from simple word problems to complex scientific problems. Therefore, the value of k is -7.
What are Polynomials?A polynomial is an expression in mathematics made up of coefficients and indeterminates, which are also known as variables. It can only be solved using the addition, subtraction, multiplication, and powers of positive-integer variables. For instance, x3 + 2xyz2 yz + 1 has three indeterminates. Value In both mathematics and science, polynomials are widely used. For instance, they are used to define polynomial functions, which can be found in a variety of contexts, from basic chemistry and physics to economics and social science, and they are used in calculus and numerical analysis to approximate other functions. If f(x) = 3x³ + kx- 10 , If x -2 is a factor of the given equation, then,x - 2 = 0 ⇒ x = 2, On substituting, x =2, f(x) = f (2) = 0.So, f (2) = 3(2) ³ + k2- 10 = 0⇒ 24 + 2k -10 = 0 and 2k = -14⇒ k = -14/2, so k = -7In higher mathematics, polynomials are employed to build algebraic varieties and polynomial rings, which are fundamental ideas in algebra and algebraic geometry.To learn more about Polynomials, refer to:
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Select ALL expressions equal to: -8(5y - 9)
The expression -8 (5y - 9) is equals to - 40y + 72
How to find equivalent expression?In maths, an expression is a combination of numbers, variables, functions (such as addition, subtraction, multiplication or division etc.).
In other words, a mathematical expression is any combination of numbers, letters, and relational operators.
Therefore, the following expression can be express in an equivalent form as follows:
Equivalent expressions are expressions that work the same even though they look different.
Hence,
-8 (5y - 9)
open the bracket
-8 (5y - 9) = - 40y + 72
Therefore, the equivalent expression of -8 (5y - 9) is - 40y + 72
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help please please help thanks
solve the quadratic equation [tex]3x^{2} +x-5=0[/tex]
give your answers to 2 decimal places
Answer:
-1.47, 1.14 to 2 decimal places.
Step-by-step explanation:
3x^2 + x - 5 = 0
3(x^2 + 1/3x) - 5 = 0
Completing the square on the expression in the parentheses:
3[(x + 1/6)^2 - 1/36) - 5 = 0
3(x + 1/6)^2 - 1/12 - 5 = 0
(x + 1/6)^2 = 61/12 / 3
(x + 1/6)^2 = 61/36
(x + 1/6) = +/-√61 / 6
x = -1/6 +/- √61 / 6
x = 1.135, -1.468
Make an equation for the first question
Then use the equation to find the cab fare if zarela has a 1.8 mile commute to work
The two equations are : 6x + m = F
and 6x + 1.8 m = F
How to solve a linear equations ?A straight line's general equation is y = mx + c, where m denotes the gradient and y = c denotes the point at which the line crosses the y-axis. On the y-axis, this value c is referred to as the intercept. Y = mx + c represents the equation of a straight line with gradient m and intercept c on the y-axis.
A linear equation has the slope-intercept form y = mx + b. Variables in the equation are x and y. When x is 0, the integers m and b provide the line's slope (m) and the value of y. (b)
Let the total time be x
Given distance Zarela travels is m
Thus the total cab fare = F
Therefore the equation becomes;
6x + m = F
In the second part of the question it is given that Zarela travels for 1.8 mile
thus the equation becomes
6x + 1.8 m = F
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susan has an ear infection. The doctor prescribes a course of antibiotics. Susan is told to take 250mg dose of the antibiotic regularly every 12 hours for 20 days. Susan is curious and wants to know how much of the drug will be in her body over the course of the 20 days. She does some research online and finds out that at the end of 12 hours, about 4% of the drug is still in the body.
Answer:
400 mg
Step-by-step explanation:
There are 24 hours in a day. 250mg every 12 hours is 250x2=500.
500×20=10,000
10,000x.04=400
The PTA at a school want to sell chocolate bars to support the school PTA. They asked a random sample of 10 students how many chocolate bars they would be willing to buy at a price of $2 for each bar. Their responses are summarized in the following dot plot:
If there are a total of 250 students at the school and the sample is representative of the entire school's population of students, which of the following is the most reasonable estimate of the total number of chocolate bars the PTA can expect to sell to all the students of the school? A. 250
B. 500
C. 600
D. 750
Answer:
B
Step-by-step explanation:
the most answered was 2. 2x250=500
What is the 10th term of the sequence 5,2, 4/5,….
Good evening,
Answer:
-512/390625
Step-by-step explanation:
an=a1 •r^n-1
a10=5 • -0.4^10-1
a10=5 • -0.4^9
a10=5 • -512/1953125
a10= -512/390625
When comparing functions, such as Seth’s scenarios for travelling to school, will the function with the greatest initial value continue to be the greatest as time increases?
No. The pace of change affects the y-value, therefore having a higher beginning value does not guarantee it. The output may decrease if the function with the bigger beginning value has a slower rate of change.
This is further explained below.
What are functions?Generally, No. Even if the function had a higher beginning value, it does not always follow that it would always have a higher y-value. This is because the y-value also relies on the rate of change.
In conclusion, If the function with the higher beginning value has a slower rate of change, it is possible that the output may become smaller at some time in the future as a consequence of this.
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Find the value of z.
Answer:
it depends on what is z for, if it's for the whole triangle then i would think it would be 2z - 4 10 and 7 added or multiplied. Or it could be 2z -4 witch would be z = 2
What kind of slope is this please help!
Type: Positive
Answer: y = 3/2x + 4
Formula: Rise | up = positive | down = negative
------
Run | right = positive | left = negative
Make sure to find 2 perfect points
aight i dont know what I did, but did it helped?
Please someone help help me
Answer:
y - axis
Step-by-step explanation:
point moves from right to left
21 El Carro de la maestra mago
recorre 95km con
Solo
tiene
201 de gasolina sl
17 Litros ¿cuantos km recorre
The distance it travel in 17litres petrol: 8.024km
What is Distance?
Distance is a measurement of how far apart two things or points are, either numerically or occasionally qualitatively. Distance can refer to a physical length in physics or to an estimate based on other factors in ordinary language.
Given,
The distance traveled in 201 petrol = 95km
The distance traveled in 1 liter = 95/201
= 0.472km
Now, we have to find out how many km does it travel in 17liter:
The distance traveled in 17liters = 17 x 0.472
= 8.024km
Hence, it travels 8.024km in 17 liters petrol
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a traffic light at a certain intersection is green 55% of the time, yellow 10% of the time, and red 35% of the time. a car approaches this intersection once each day. let y denote the number of days up to and including the third day on which a red light is encountered. assume that each day represents an independent trial.
The probability of the car encountering it's first red light on the third day, i.e., P(Y = 3) will be 0.1479
As per the question statement, assuming that "Y" denotes the number of days pass up to and including the first day on which the car encounters a red light, a traffic light at a certain intersection is green 55% of the time, yellow 10% of the time, and red 35% of the time and a car approaches this intersection once each day.
We are required to calculate the probability of the car encountering it's first red light on the third day, i.e., P(Y = 3)
Here, Probability of encountering a Red light = 0.35, since traffic light at the intersection is red 35% of the time.
And "Y" is the number of days that pass up to and including the first time the car encounters a red light, i.e.,
The distribution here is a geometric one, where
P(Y = 3)
= P(Not red light in initial 2 lights) * P(red light in third light)
= [(1 - 0.35)² * 0.35]
= 0.1479
Probability: It is a branch of Mathematics, that deals with the numerical descriptions concerning the extent to which an event is likely to occur, or how likely it is for a proposition to be true, and is measured by the ratio of the favorable cases to the whole number of cases possible.
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A tailor spends $63.75 to buy 7.5 yards of satin. What is the cost of the satin fabric per yard?
Answer:
12.75
Step-by-step explanation:
The stock of Company A gained $6.65 throughout the day and ended at a value of $101.65. By what percentage did the stock rise?
Simplify: -42 30(cubed) / 12 10 (cubed)
The fundamental guidelines and procedures to simplify any algebraic statement are as follows:By multiplying factors, remove any grouping symbols like brackets and parenthesis.
If the words contain exponents, use the exponent rule to eliminate grouping.Add or subtract like terms to combine them.
Simplify: -42 30(cubed) / 12 10 (cubed)?
By removing the denominators, convert fractions to integers.
Because the denominators of our two fractions differ, we must calculate the Least Common Denominator and rewrite our fractions using the common denominator as needed. LCD(-42/30, 12/10) = 30
Now that the denominators of our two fractions are similar, we may multiply them both by 30 to get rid of the denominators.
The final result is: -42/30: 12/10 = -42: 36
With the highest common factor, attempt to further reduce the ratio (GCF).
GCF is 6 for -42 and 36.
Divide both terms by the GCF, 6, as follows: -7 36 6 = 6; -42 6 =
By dividing both parts by the GCF = 6, the ratio -42:36 can be reduced to its smallest terms: -42:36 = -7:6.
Therefore:
-42/30 : 12/10 = -7 : 6
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bro can someone help please i’ve been struggling all day
Answer:
x = 7
Step-by-step explanation:
Don’t have to do that graphing just need the slope please
The slope and y-intercept of each line are:
13. slope = 1/2; y-intercept: 0.
14. slope = 3; y-intercept: 0.
15. slope = -2/5; y-intercept = 0.
16. slope = -1; y-intercept = 1.
17. slope = -2/3; y-intercept = -4.
18. slope = 1; y-intercept = 0.
19. 7/9
20. 3/5
How to Determine the Slope and the Y-intercept of a Line?The slope and y-intercept of a line can be determine from the given equation of a line in slope-intercept form, y = mx + b, where:
Y-intercept is represented as b.Slope is represented as m.13. y = 1/2x,
The slope = 1/2
The y-intercept of the equation is: 0.
14. y = 3x,
The slope = 3
The y-intercept of the equation is: 0.
15. y = -2/5x,
The slope = -2/5
The y-intercept of the equation is: 0.
16. y = -x + 1
The slope = -1
The y-intercept of the equation is: 1.
17. y = -2/3x - 4,
The slope = -2/3
The y-intercept of the equation is: -4.
18. y = x,
The slope = 1
The y-intercept of the equation is: 0.
19. Slope = change in y / change in x = (18 - 11)/(19 - 10)
Slope = 7/9
20. Slope = change in y / change in x = (2 -(-1))/(9 - 4)
Slope = 3/5
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How many circular tiles are needed to make pattern number 20
Answer:
84 circle for pattern 20
Step-by-step explanation:
we know that by studying the first 3 patterns we know that the corner pieces (that have multiple circles on them) has 3 circlesThe edge pieces (the ones with 1 circle on them) we now know what to doFor each pattern number that is how many squares (x) are [tex]x^{2}[/tex] to find how many squares in totalWe know we need to find square pattern 20We now know how many squares are gonna be on each side (20)look at attachment1 for referencenow we are gonna look atttachment2now we are gonna count the edges on each side (the blue) we get 18 on each side so we do 18*4 and that is 72now we know that the edges only have one circle on it so for the edges we have 72now for the corners, we know that there are 3 per corner piecenow we count the corners ( there are 4 in total)now we do 4*3 and that is 12now we add the total circles for the corners (12) and the edges (72) 12+72= 84pattern 20 has 84 circlesConsider each of the households living in your county.
Family 1: A married couple with one child: Due to the high cost of childcare, one parent stays home to care for the child while the other works 40 hours per week making $18 per hour. They also receive a monthly stipend of $50 to cover work related expenses.
Family 2: A married couple with two children who are in school. Both adults are working 40 hours per week with one making $16 per hour while the other makes minimum wage. One of these workers pays $25 per month in union dues.
Family 3: A fulltime student who only has the time to work 20 hours per week making $2 more than the minimum wage. They have a gerbil as a pet.
Part 1: Equations
Write an equation for the monthly wages of each family, including any bonuses or wage reduction.
Minimum wage = 11.50
Family 1: _____________________________
Family 2: _____________________________
Family 3: _____________________________
Part 2: Graph
Graph each equation on the same grid, using different colors to represent each family.
Answer:
Family 2: A married couple with two children who are in school. Both adults are working 40 hours per week with one making $16 per hour while the other makes minimum wage. One of these workers pays $25 per month in union dues.
Step-by-step explanation:
There may be more then one answer
Will give brainlest
You estimate that your car gets 28 miles per gallon. The cost of gas per gallon is shown. How much does it cost you to travel 455 miles? Round to the correct number of significant figures.
The estimate of the cost to travel 455 miles as required in the task content is; $63.4.
What is the cost of travelling 455 miles as given in the task content?It follows from the task content that the cost of travelling 455 miles is to be determined from the given information.
Hence, this is two-step problem.
First, since the car gets 28 miles per gallon, the amount of gas needed to travel 455 miles by proportion is;
455/28 = 16.25 gallons.
Also, since the cost per gallon as in the complete task content is; $3.899.
The cost of 16.25 gallons is; 16.25 × $3.899
= $63.4.
Remarks: Gas costs $3.899 per gallon.
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F(2,9) after a reflection over the y-axis.
Answer:
(-2, 9)
Step-by-step explanation:
hope it helped <3333 :D
