Answer: A
Step-by-step explanation:
Convert the equation into quadratic form (y=ax^2+bx+c)
y=-3(x-4)(x+6) = y=-3x^2-6x+72
Calculate -b/2a
which is 6/-6=-1
then put the value -1 into the equation for x.
-3+6+72=75
The answer is therefore A.
How do you write six times the quantity two x plus three y
Answer:
6(2x + 3y)
Step-by-step explanation:
Framing algebraic equation:Two x plus three = 2x + 3y
Six times of (2x + 3y) = 6 *(2x + 3y)
What is the Reciprocal of 1/10
Answer: 10
Step-by-step explanation:
ex: reciprocal of 2 would be 1/2 because 2 can be written as 2/1; you just switch the demoninator and numerator
i need to know every one of these questions
Find the geometric number between 4 and 5.
The geometric mean of x and y is [tex]\sqrt{xy}[/tex]
So the geometric mean of 4 and 5 is [tex]\sqrt{4*5} = \sqrt{20} \approx 4.472[/tex]
Answer:
[tex]2\sqrt{5}[/tex]
-------------------
Geometric mean of two numbers is the square root of their product.
The number we are looking for is:
[tex]\sqrt{4*5}=2\sqrt{5}[/tex]What is 1.047x 5-0.88
Estimate 8 1/3- 3 3/4. Tell me how you got your estimate. Susi subtracted and found the actual difference to be 5 7/1. Is her answer reasonable? Explain
After solving the fraction answer is 4 7/12 but the Susi's answer is 5 7/1. So the Susi's answer is wrong.
The given expression is 8 1/3- 3 3/4
We first solve that expression.
We convert mixed fraction into improper fraction.
After conversion we equal the denominator of of both fraction.
Then we subtract the fraction.
After solving we check Susi's answer is right or wrong.
To convert 8 1/3 into improper fraction we multiply 8 and 3 then we add 1 in the answer of multiplication of 8 and 3.
8 1/3 = 25/3
To convert 3 3/4 into improper fraction we multiply 3 and 4 then we add 3 in the answer of multiplication of 3 and 4.
3 3/4 = 15/4
Now the expression is:
= 25/3 - 15/4
Multiply and divide by 12 on both side
= 25/3 × 12/12 - 15/4 × 12/12
= (25 × 4)/12 - (15 × 3)/12
= 100/12 - 45/12
= (100 - 45)/12
= 55/12
= 4 7/12
The simplified answer of given expression is 4 7/12 but the Susi's answer is 5 7/1. So the Susi's answer is wrong.
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at 8:00 a.m. the temperature was 3° below zero by 1:00 p.m. the temperature rose 14° and my 10:00 p.m. drop 12 degrees what was the temperature at 10:00 p.m.
Based on the information provided, it can be concluded that by 10:00 p.m. the temperature was 1°.
How did the temperature change over time?First, let's list the information provided:
8:00 a.m. = -3
1:00 p.m. = +14
10:00 p.m. = - 10
Based on this, let's calculate the temperature by 10:00 p.m.
-3 + 14 = 11° by 1:00 p.m.
This means the temperature at 1:00 p.m. was 11° grades. Now, let's calculate the temperature at 10:00 p.m.
11 -10 = 1° by 10:00 p.m
This means that by 10:00 p.m. the temperature was 1°.
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Carnival ride tickets cost $5 each. Let C(n) = 5n be the amount of money you spend on n tickets. What is the domain of this function?
The domain of the function is composed by all the integer numbers that are greater than or equal to zero.
What is the domain of the function?The domain of a function is the set containing all the possible input values that the function can accept.
For this problem, the input is the number of tickets purchased, which must be a countable amount (you cannot purchase a negative number of tickets nor a decimal number of tickets), hence the domain of the function is composed by all the integer numbers that are greater than or equal to zero.
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If 6 times the 6th term of an A.P., is equal to 9 times the 9th term, find its 15th term
If 6 times the 6th term of an A.P is equal to 9 times the 9th term, then 15th term of the A.P. is -2d with d as the common difference.
Let's call the common difference of the arithmetic progression (A.P.) "d". The nth term of an A.P. is given by the formula T = a + (n - 1)d, where a is the first term and n is the term number.
Using this formula, we can write two expressions for the 6th and 9th terms:
T₆ = a + (6 - 1)d = a + 5d
T₉ = a + (9 - 1)d = a + 8d
According to the problem, 6 times the 6th term of the A.P. is equal to 9 times the 9th term, so we can write the following equation:
6T₆ = 9T₉
Substituting the expressions for T₆ and T₉, we get:
6(a + 5d) = 9(a + 8d)
Expanding and solving for a, we get:
6a + 30d = 9a + 72d
Subtracting 6a from both sides:
24d = 3a + 72d
Subtracting 72d from both sides:
-48d = 3a
Dividing both sides by 3:
-16d = a
So, the first term of the A.P. is -16d.
To find the 15th term, we can use the formula for the nth term:
T₁₅ = a + (15 - 1)d = -16d + 14d = -2d
So, the 15th term of the A.P. is -2d.
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Sin Cos Tan
Geometry
The trigonometric ratios for each triangles are:
Triangle 1:Please note that all angles B are the right angle, then:
cos B = 1; sin B = 0; tan B = -
The trigonometric ratio of sin, cos, tan, can be formulated as:
(please refer to the attached triangle below for reference)
cos A = side adjacent to A / Hypotenuse
Cos A = b/c
Sin A = side opposite to A / Hypotenuse
Sin A = a/b
Tan A = Side opposite to A / Side adjacent to A
Tan A = a/b
From these formulas, we can find that:
Triangle 1
Cos A = 40/50 = 4/5
Sin A = 30/50 = 3/5
Tan A = 30/40 = 3/4
Cos C = 30/50 = 3/5
Sin C = 40/50 = 4/5
Tan C = 40/30 = 4/3
Triangle 2
Cos A = 27/45 = 3/5
Sin A = 36/45 = 4/5
Tan A = 36/27 = 4/3
Cos C = 36/45 = 4/5
Sin C = 27/45 = 3/5
Tan C= 27/36 = 3/4
Triangle 3
Cos A = 15/17
Sin A = 8/15
Tan A = 8/15
Cos C = 8/17
Sin C = 15/17
Tan C = 15/8
Please note that all angle B on the three triangles are all a right angle, then:
Cos B = 1
Sin B = 0
Tan B = -
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if jack has three packs of gum and sam has 4 packs of gum. how much do they have in total
If jack has three packs of gum and sam has 4 packs of gum, then the total amount of gum they have together is 7 packs.
What is the addition?
The addition is putting numbers together to make a sum or total. The plus sign + tells you to add two numbers. = is an equals sign. It shows that things on either side of it are equal.
We have given,
Jack has 3 packs of gum and Sam has 4 packs of gum.
To find the total number of packs of gum they have together, we simply add their individual amounts:
3 packs (Jack) + 4 packs (Sam) = 7 packs
Therefore, the total amount of gum they have together is 7 packs.
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A picture frame is 112 inches wider than the picture
it holds. Let f represent the width of the frame. Let p represent the width of the picture. Complete the table.
Answer: (1,2.5), (2, 3.5), (3, 4.5)
Step-by-step explanation: The question states that the frame is one and a half inches wider than the picture, so the equation would be f = p+ 1.5. Add 1.5 to each value of p to find the value of f
Please explain with steps
Write as a single power using the rule
A and B part question You Try
Answer:
Check below
Step-by-step explanation:
Laws of indices applied in this worksheet:
[tex]a^{n} . a^{m} = a^{n + m[/tex]
[tex]a^{n} .b^{n} = (ab)^{n}[/tex]
Example 1:
a) [tex]x^{2} . x^{3} . x[/tex]
= [tex]x^{2 + 3 + 1}[/tex]
= [tex]x^{6}[/tex]
b) [tex](-3.1)^{3}[/tex]×[tex](-3.1)^{4}[/tex]
= [tex](-3.1)^{3 + 4}[/tex]
= [tex](-3.1)^{7}[/tex]
You Try:
a) [tex]a^{5} . a^{2} . a^{2}[/tex]
= [tex]a^{5 + 2 + 2}[/tex]
= [tex]a^{9}[/tex]
b) [tex](-1)^{100} . (-1)^{37}[/tex]
= [tex](-1)^{100 + 37}[/tex]
= [tex](-1)^{137}[/tex]
Parallelogram EFGH has vertices E(1, 3), F(3, 5), and G(4, 2). What are the coordinates of point H?
The parallelogram EFGH has the following coordinates at point H: H(x, y) = (6, 4).
What are the coordinates of the missing vertex in a parallelogram?
Parallelograms are quadrilaterals with two pairs of parallel sides and any quadrilateral can be generated by the knowledge of four vertices. Based on this fact, the following conditions must be observed:
[tex]\overline {EF} \parallel \overline {GH}[/tex]
The coordinates of the missing vertex can be found by the following vector sum:
F(x, y) - E(x, y) = H(x, y) - G(x, y)
H(x, y) = G(x, y) + F(x, y) - E(x, y)
H(x, y) = (4, 2) + (3, 5) - (1, 3)
H(x, y) = (6, 4)
The coordinates of point H in parallelogram EFGH are H(x, y) = (6, 4).
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Joshua walked on a treadmill for 1/3 of an hour. How many seconds is this?
Answer:
20
Step-by-step explanation:
1 hour is 60 minutes 1/3x60=20
Answer:
1200 seconds
Step-by-step explanation:
1/3 of an hour is 20 minutes. There are 60 seconds in a minute. 60 times 20 = 1200.
find the area of the region bounded by the line y=3x-6, the line 2x+8, and the line y=6
The area of the region bounded by the lines y = 3x - 6 and y = -2x + 8 between the x-axis is 12/5 units
How to calculate the areaWe can find the intersection point between these two lines;
y = 3x - 6
y = -2x + 8
Set these two equations equal to each other.
3x - 6 = -2x + 8
5x - 6 = 8
Add 6 to both sides of the equation.
5x = 14
Divide both sides of the equation by 5.
x = 14/5
Find the y-value where these points intersect by plugging this x-value back into either equation.
y = 3(14/5) - 6
Multiply and simplify.
y = 42/5 - 6
Multiply 6 by (5/5) to get common denominators.
y = 42/5 - 30/5
Subtract and simplify.
y = 12/5
These two lines intersect at the point 12/5. This is the height of the triangle formed by these two lines and the x-axis.
Now let's find the roots of these equations (where they touch the x-axis) so we can determine the base of the triangle.
Set both equations equal to 0.
(I) 0 = 3x - 6
Add 6 both sides of the equation.
6 = 3x
x = 2
Set the second equation equal to 0.
(II) 0 = -2x + 8
Add 2x to both sides of the equation.
2x = 8
Divide both sides of the equation by 2.
x = 4
The base of the triangle is from (2,0) to (4,0), making it a length of 2 units.
The height of the triangle is 12/5 units.
Formula for the Area of a Triangle:
A = 1/2bh
Substitute 2 for b and 14/5 for h.
A = (1/2) · (2) · (12/5)
Multiply and simplify.
A = 12/5
The area of the region is 12/5 units
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Caroline's gross earnings are $1, 126 for the current pay period. Find the state disability insurance (SDI) amount deducted from
her paycheck based on a rate of 1%of her gross earnings. Caroline has not earned $31, 800 this year.
$11.26
$13.98
$10.59
$12.52
Answer:
A) 11.26
Step-by-step explanation:
To find the state disability insurance (SDI) amount deducted from Caroline's paycheck, we need to calculate 1% of her gross earnings.
1% of $1,126 is (1/100) x $1,126 = $11.26
So, the SDI amount deducted from Caroline's paycheck would be $11.26.
A line with a slope of 8 passes through the point (4, 5). What is its equation in point-slop form?
y= (1/9)x + b, plug in the point to solve for b
5= (1/9)(-4) + b
b = 5 + 4/9 = 49/9
y= (1/9)x + 49/9
9y = x + 49
Suppose that f(x)= x^2 and g(x)= 4/5x^2.Which statement best compares the graph of g(x) with the graph of f(x).
The graph of G(x) is the graph of F(x) compressed vertically.
Why is the expression?The equation of the graph of F(x) is given by x^2 and that of G(x) is given by 4/5 x^2.
The coefficient of x^2 in the equation of G(x) is 4/5, which is smaller than the coefficient of x^2 in the equation of F(x), which is 1.
This means that for a given value of x, the value of G(x) will always be less than the value of F(x). In other words, the graph of G(x) will be closer to the x-axis compared to the graph of F(x), which is equivalent to compressing the graph of F(x) vertically.
Therefore, the statement that best compares the graph of G(x) with the graph of F(x) is "The graph of G(x) is the graph of F(x) compressed vertically".
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Suppose that F(x) = x^2 and G(x) =4/5x^2 Which statement best compares the graph of G(x) with the graph of F(x)? The graph of G(x) is the graph of F(x) compressed vertically and flipped over the x-axis. The graph of G(x) is the graph of F(x) stretched vertically. The graph of G(x) is the graph of F(x) stretched vertically and flipped over the x-axis. The graph of G(x) is the graph of F(x) compressed vertically.
I need help somewhat quickly please! || one half ÷ 3 = ___.
6
one and one-half
two-thirds
one-sixth
Answer:
One-SixthStep-by-step explanation:
One half ÷ 3 = 1/2 ÷ 3
To divide fractions, we need to multiply the first fraction by the reciprocal of the second fraction. So,
1/2 ÷ 3 = 1/2 x 1/3 = 1/6
Therefore, one half ÷ 3 is equal to one-sixth.
Hope it helps!The length of a rectangular poster is 4 more inches than three times its width. The
area of the poster is 340 square inches. Solve for the dimensions (length and width)
of the poster.
The dimensions are Width = 10 inches and Length = 13 inches
Draw a rectangle. If the length is 4 inches longer than three times its width, we can write the width as "w" and the length as the 3*width + 4
Area is (width)(Length) = (width)(3*width+4)
W
----------
| |
| |
| | L = 3w+4
| |
| |
-----------
A = (3w+4)(w)
A = 3w² + 4w = 340.
(Problem states that area is 340 sq in)
Need to solve this quadratic equation
3y² + 4y - 340 = 0
Factor:
(w - 10) (w + 13) = 0
So
w - 10 = 0. or. w + 13 = 0
Solve these and get
w = 10. or. w = -13
Only one that makes sense in real life is the positive one.
So the dimensions are
Width = 10 inches
Length = 13 inches
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Help me with mathematics pls
Answer:
x ≈ 4.19 meters
Step-by-step explanation:
You want the value of x given a (4x +2) by (2x +3) rectangle with a cutout corner that is (x+2) by (x-1) has an area of 194 square meters.
AreaThe difference in area between the enclosing rectangle and the missing corner is ...
(4x +2)(2x +3) -(x +2)(x -1) = 194
8x² +16x +6 -(x² +x -2) = 194
7x² +15x +8 = 194
7x² +15x -186 = 0 . . . . . . put in standard form
This is best solved using the quadratic formula:
[tex]x=\dfrac{-b+\sqrt{b^2-4ac}}{2a}=\dfrac{-15+\sqrt{15^2-4(7)(-186)}}{2\cdot7}\\\\=\dfrac{-15+\sqrt{5433}}{14}\approx\boxed{4.193492}[/tex]
The value of x is about 4.19 meters.
Answer: -2.19 or 1.69
x = −2.18723509003
or
x = 1.68723509003
Step-by-step explanation:
Kristi has a circular pool her house. The radius of the swimming pool is 22.5 Find the area and circumference of the pool.
Answer:
circumference: 141.4
Step-by-step explanation:
formula for circumference: 2πr
2 x π x 22.5
= 141.37
The area and circumference of the pool is 1590.43 square units and 141.37 units.
What is the circumference of the circle?The circumference of the circle that has a radius of r is defined as the product of diameter to the pie value.
The circumference of the circle = 2πr
We are given that;
Radius= 22.5
Now,
we can plug it into the formulas and get:
A=π(22.5)2
≈1590.43
C=2π(22.5)
≈141.37
Therefore, by circumference the answer will be 1590.43 square units and 141.37 units.
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what fraction replaces these ? to make this calculation correct 5/8 + ? = 1
The Top-Notch Middle School had athletes from all the grades playing on a sports team.
6th grade 7th grade 8th grade
Basketball 2 4 7
Baseball 1 6 5
Soccer 7 4 4
Football 8 15 10
Explain what the ratio 15:73 represents. pls help
Based on the information presented, the ratio represents 8th-grade baseball players to total athletes.
What is a ratio?A ratio is a mathematical expression that shows the proportion or the number of a specific element in a category compared to the number of another element in the same category. For example, if you count the animals on a farm the ratio of cows to chickens can be 5:7, which means that for every 5 cows there are 7 chickens.
here, we have,
What does the ratio 5:73 mean?
5 : This is the number of baseball players who are in 8th-grade
73: This is the total of players. You get this number if you add all the numbers given.
Based on this, this ratio is comparing the number of baseball players and total players, which means the meaning of this ratio is " the ratio of 8th grade baseball players to total athletes".
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explain and solve part a and b please, do not understand
The graph of the first function is y = √(x - 5).
The graph of the second function is y = |x - 1| + 4.
What are some rules of function transformations?Suppose we have a function f(x).
f(x) ± d = Vertical upshift/downshift by d units (x, y ±d).
f(x ± c) = Horizontal left/right shift by c units (x - + c, y).
(a)f(x) = Vertical stretch for a > 0, vertical shrink a < 0. (x, ay).
f(bx) = Horizonatal compression b > 0, horizontal stretch for b < 0. (bx , y).
f(-x) = Reflection over y-axis, (-x, y).
-f(x) = Reflection over x-axis, (x, -y).
The graph of the first function is f(x) = y = √x.
Now, f(x - 5) would be the same function shifter 5 units to the right,
f(x) = √(x - 5).
The graph of the second function is a modulus function shifted up 2 units and to right by 1 unit g(x) = |x - 1| + 2 and again g(x) + 2 = |x - 1| + 4.
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Divide a restaurant bill of $204 evenly among six people
Answer: $34
Step-by-step explanation:
204 divided by 6 = 34
the minimum of two independent exponential random variables is also exponential. true or false? why?
False. The minimum of two independent exponential random variables is not necessarily exponential.
For two independent exponential random variables X and Y, with rate parameters λ1 and λ2 respectively, the minimum of X and Y is a random variable Z with the cumulative distribution function (CDF) given by
[tex]F_Z(z) = 1 - e^(-(λ1+λ2)z)[/tex].
The survival function of Z is given by
[tex]S_Z(z) = e^(-(λ1+λ2)z)[/tex].
Therefore, the probability density function of Z is
[tex]f_Z(z) = (λ1 + λ2)e^(-(λ1+λ2)z)[/tex].
This is not an exponential distribution because the form of the probability density function is not of the form [tex]f(z) = λe^(-λz)[/tex].
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12sec²x-16=0
Solve for the following equation by the quadratic formula or factoring
Answer:
Step-by-step explanation:
The equation 12sec²x - 16 = 0 is not a polynomial equation and cannot be factored into the product of two or more polynomials.
To solve for x, we need to isolate sec²x by adding 16 to both sides and then dividing by 12:
12sec²x - 16 + 16 = 0 + 16
12sec²x = 16
sec²x = 16 / 12
sec²x = 4/3
Now that we have isolated sec²x, we can find x by finding the inverse secant of 4/3.
Note that the inverse secant is a multi-valued function, so there may be multiple solutions for x, which can be obtained using a calculator or tables of trigonometric functions.
If Arnav applies the Distributive Property to the expression 4+8(y+3)+x, which expression will he get?
If Arnav applies the Distributive Property to the expression 4 + 8(y + 3) + x, the expression that he will get is 4 + 8y + 24 + x or 8y + x + 28
As per the data given:
Arnav applies the Distributive Property to the expression 4 + 8(y + 3) + x.
Here we have to determine the equivalent expression after applying the Distributive Property to the expression 4 + 8(y + 3) + x.
Distributive property states that, for real numbers a, b, and c:
a (b + c) = ab + ac
An expression of the form A(B + C) can be solved as A × (B + C) = AB + AC.
From the given expression the part which we have to apply distributive property is 8(y + 3)
Here a = 8
b = y
c = 3
So, applying property in the expression
= 4 + 8(y + 3) + x
= 4 + 8y + 24 + x
= 8y + x + 28
Therefore, the equivalent expression is 4 + 8y + 24 + x or 8y + x + 28
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