The expected value of y when x-value is 45 is 35.06
Any equation which can be put in the form ax + by + c = 0, where a, b and c are real numbers, and a and b are not both zero, is called a linear equation in two variables. For example, y = 2x+3 and 2y = 4x + 9 are two-variable linear equations.
In the given question value of x is given and value of y is asked.
The given equation : y = -2.61x+152.51 Such questions can be solved by substituting the given value of variable in the equation which will help us find the unknown.
Substituting x = 45 in the given equation , we get
y = -2.61 x 45 + 152.51
y = -117.45 + 152.51
y = 35.06
Thus the expected value of y when x-value is 45 is 35.06
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The graph of a function g is shown below
Answer:
(a) x = 0
(b) g(2) = -5
Step-by-step explanation:
Another way of representing g(x) is with the variable "y". In other words, the value of g(x) is the value on the y-axis (vertical axis).
(a) The question is asking you to give the "x" value when the line crosses y = -4. The only value which satisfies this is x = 0.
(b) When 2 is placed inside the parentheses of g(x), it is asking you to find the "y" value of the line at x = 2. The only value which satisfies this is y = -5.
Find the missing side the side of the triangle help
Answer: X = 12.1 units
Step-by-step explanation:
Solving the side x of the triangle just requires the Pythagorean theorem.
x^2 + 7^2 = 14^2
x^2 + 49 = 196
subtract 49 on both sides, to cancel the 49 on the left side.
x^2 = 147 units
extract the square root of each side.
X = 12.1 units
Hope I Helped!
When the birth rate in a population is greater than the death rate, the population will generally __________.
1. none of the choices
2. decrease
3. increase
4. not change
Answer:
3. Increase
Step-by-step explanation:
If more people are being born compared to the number of deaths, then you have population growth.
Answer:
3. increase
Explanation:
When birth rate is higher than the death rate, it is called natural increase.
The formula for natural increase is:
[tex]natural \space\ increase = \frac{Crude \space\ Birth \space\ Rate \space\ - \space\ Crude \space\ Death \space\ Rate}{100}[/tex]
On a coordinate plane, triangle A B C is shifted 4 units up and 3 units to the left to form triangle A prime B prime C prime.
Use the figure to identify the correct rule for the translation.
(x, y) Right-arrow (x – 3, y + 4)
(x, y) Right-arrow (x + 3, y – 4)
(x, y) Right-arrow (x – 4, y + 3)
(x, y) Right-arrow (x + 4, y – 3)
In accordance with the definitions of rigid transformation and translation, the correct rule for the translation is defined by (x, y) → (x - 3, y + 4). (Right choice: A)
How to derive the mathematic expression behind a transformation rule
Mathematically speaking, transformations are rigid transformations that are modelled according to the following formula:
P'(x, y) = P(x, y) + (h, k) (1)
Where:
P(x, y) - Original pointP'(x, y) - Resulting pointh - Horizontal rightward translationk - Vertical upward translationHence, a leftward translation indicates that h < 0. The correct rule for the translation is defined by (x, y) → (x - 3, y + 4).
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Answer:
a
Step-by-step explanation:
the picture
The measure of one a cite angle of a right triangle is 6 less than twice the measure of the other acute angle find the measure of each acute angle . Help quickly please
Answer:
32°, 58°
Step-by-step explanation:
Let one acute angle measure x.
The other acute angle measures 2x - 6.
The sum of the measures of the acute angles of a right triangle is 90.
x + 2x - 6 = 90
3x - 6 = 90
3x = 96
x = 32
2x - 6 = 2(32) - 6 = 58
Answer: 32°, 58°
Ly has 3 more dime than nickels and twice as many quarters than dimes. the value of his coins is $9.60. how many of each coin does he have?
Ly has 15 dimes, 12 nickels and 30 quarters given that he has 3 more dime than nickels and twice as many quarters than dimes and the value of these coins is $9.60. This can be obtained by giving variables to each represent the number of each coin and adding the values to equate with the total value of coins.
How many of each coin does he have?Let number of dimes be y
Given that,
3 more dime than nickels ⇒ Number of nickel = y - 3
twice as many quarters than dimes ⇒ Number of quarters = 2y
Value of one dime = $ 0.1 Value of one nickel = $ 0.05Value of one quarter = $ 0.259.60 = 0.1y + 0.05(y-3) + 0.25(2y)
9.60 = 0.1y + 0.05y - 0.15 + 0.5y
9.60 = 0.1y + 0.05y - 0.15 + 0.5y
9.60 + 0.15 = 0.65y
y = 9.75/0.65 = 15
y = 15
Therefore the number of each coin,
Number of dimes = y = 15Number of nickel = y - 3 =15-3 = 12Number of quarters = 2y =2×15 =30Hence Ly has 15 dimes, 12 nickels and 30 quarters given that he has 3 more dime than nickels and twice as many quarters than dimes and the value of these coins is $9.60.
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Pleaseeeee helppppp asap
This shows that the food will only last 1 1/3 meals
Fractions and proportionsFractions are written as a ratio of two integers. Given the following
Total pounds of food bought = 24 pounds
Amount fed each per meal = 3/4 * 24 pounds = 18 pounds
Remains = 24 - 18
Remaining = 6 pounds
This shows that the food will only last 1 1/3 meals
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B
B
A
A'
D
D'
m
Consider the reflection of the trapezoid across the line
of reflection, m.
The angles of trapezoid ABCD are
the angles of trapezoid A'B'C'D'.
The side lengths of trapezoid ABCD are
A'B'C'D'.
the side lengths of trapezoid
the line segments
The line m ist
connecting the corresponding vertices of the two
trapezoids.
Transformation is a process in which the size and/or orientation of a given figure are/is adjusted. The appropriate answers are:
i. equal to
ii. congruent to
iii. the same distance to
Transformation is the process required to either increase or decrease the size of a given shape, or change the orientation of a given shape. The methods of transformation are dilation, reflection, rotation, and translation.
Dilation is the method required in resizing the size of a given figure.Reflection is a method required in flipping a given figure about a reference point or line.Rotation is a method that involves turning a given shape about a line or shape.Translation involves moving all points on a given figure in a specific direction.Thus the required statements to complete the reflection across a line as required in the question are:
i. equal to
ii. congruent to
iii. the same distance to
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The sum of the measures of two alternate angles of two parallel lines is 210°. Find the two angles. (they are two answers) (one of them is not 75 degrees
The measure of the angles are 105 degrees
How to determine the angles?The sum of the angles is given as 210 degree
Alternate angles are equal.
So, we have:
x + x = 210
This gives
2x = 210
Divide by 2
x = 105
Hence, the measure of the angles are 105 degrees
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Julissa works in the warehouse of a large online retailer. On Tuesday from 9:00 a.m. to 3:00 p.m., she found that she had walked 20,458 steps preparing orders to be shipped. Approximately how many steps did she walk each hour?
3,409.6 steps
3,409.ModifyingAbove 6 with bar steps
4,091.6 steps
4.091.ModifyingAbove 6 with bar steps
The number of steps that Julissa walked each hour is 3409.6 steps per hour.
How to calculate the number of hours?According to this question, Julissa works in the warehouse of a large online retailer. She walked 20,458 steps on Tuesday from 9:00 a.m. to 3:00 p.m.
9:00 a.m to 3:00pm is 6 hours difference. This means that Julissa walked 20,458 steps in 6 hours.
Therefore, Julissa walked 20,458 steps ÷ 6 = 3409.6 steps per hour.
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Answer:
it's A
Step-by-step explanation:
Which of the following describes the graph of {x | 2 < x < 2} ?
- just a closed circle on 2
- an open circle on 2 and arrows pointing out
- the entire number line
- no solution
Answer:
baahsuslskissisudjxnxnx
What are the two most important characteristics of a geographical data set that must be known before any analysis can be done
The function y=-x-3 is graphed only over the domain of (x1-8≤x≤ 8). What is the range of the graph?
O (v1-5≤ y ≤5)
O y 1-5 ≤ y ≤-1}
O (y|1 ≤ y ≤5}
Oy|1 ≤ y ≤-1)
Answer:
B) [tex]-5\leq y\leq -1[/tex]
Step-by-step explanation:
The range is the lowest point to the highest point on the graph.
Remember this:
1. domain (x-axis) LEFT –> RIGHT
2. range BOTTOM (y-axis) –> TOP
when this equation is graphed over the domain, it limits the range to being (8,–5) and (–8,–1) and since with range you only look at the y-coordinates that means that the range is [–5,–1]
Question 6 of 18
Solve px + 17 = 12 for x.
A. x=p-5
B. x = -5-p
O C. x=
29
p
O D. X--500
Answer:
x = - [tex]\frac{5}{p}[/tex]
Step-by-step explanation:
px + 17 = 12 ( subtract 17 from both sides )
px = - 5 ( isolate x by dividing both sides by p )
x = [tex]\frac{-5}{p}[/tex] = - [tex]\frac{5}{p}[/tex]
Find the distance between the two points rounding to the nearest tenth (if necessary).
(-7, -8) and ( -4,0)
Answer:
approximately 8.5
Step-by-step explanation:
So you can use the distance formula: [tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\[/tex] which is derived from the Pythagorean theorem because normally x2-x1 would kind of give the distance length between x2 and x1 except sometimes it would be negative which wouldn't make much sense right? but it doesn't matter because it's being squared so the value ultimately becomes positive, and the same thing goes for the y-value. the distance between x2 - x1 really represents the base and y2-y1 represents the height and then adding them together gives the hypotenuse squared which is why you take the square root over the entire thing to find the distance, since the hypotenuse is the shortest distance between two points
Now all you have to do is plug the values in to get
[tex]\sqrt{(-7 - (-4))^2 + (-8 - 0)^2}\\\sqrt{(-3)^2 + (-8)^2}\\\sqrt{9 + 64}\\\sqrt{73}\\distance \approx 8.5[/tex]
What is 7/15 turned into a decimal
Answer:
7 ÷ 15 = 0.46666666666667
Step-by-step explanation:
Answer:
0.47
Step-by-step explanation:
To turn any fraction into a decimal, we must simply divide the numerator by the denominator. 7 divided by 15 is equal to 0.466666...
If we round this number to the nearest hundredth, we get 0.47.
Can y’all help me out with this one I didn’t do it right igs
Step-by-step explanation:
We have a dilation because we are multiplying the pre image by some constant,
Since dilations doesn't preserve side length, they are a non rigid motion.
According to the rule, we multiply the x values by 3 and the y values by 2.
So our new points are
A'(9,10)
B'(15,6)
C'(6,4)
Why is -1 3/10 as an improper fraction -13/10? Wouldn’t it be -7/10 because -1 * 10 + 3 is -7/10?
Answer:
-13/10
Step-by-step explanation:
It wont be -7/10 because to change a mixed number to an improper fraction, we multiply the whole number by the denominator and then add this product with the numerator.
.7bar8 into a fraction in simplest form
The number 0.7 / 8 is given by the fraction 7 / 80 when expressed in its simplest form
What is an equation?An equation is an expression that shows the relationship between two or more variables and numbers.
A fraction in its simplest terms is given as a/b, where a is the numerator and b is the denominator.
Hence:
0.7 / 8 = 7 / 80
The number 0.7 / 8 is given by the fraction 7 / 80 when expressed in its simplest form
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Which inequality in factored form represents the region less than the quadratic function with zeros-40 and 50 and
includes the point (-55,-75) on the boundary line?
Oy<-(x-40)(x-50)
Oys-(x+40)(x+50)
Oys-(x-40)(x-50)
Oy<(x+40) (x + 50)
Using the Factor Theorem, the inequality that represents the given region is:
[tex]y < \frac{(x + 40)(x - 50)}{21}[/tex]
What is the Factor Theorem?The Factor Theorem states that a polynomial function with roots [tex]x_1, x_2, \codts, x_n[/tex] is given by:
[tex]f(x) = a(x - x_1)(x - x_2) \cdots (x - x_n)[/tex]
In which a is the leading coefficient.
The roots are given as follows:
[tex]x_1 = -40, x_2 = 50[/tex]
Hence:
y = a(x + 40)(x - 50)
It includes the point (-55,-75), hence:
-75 = a(-55 + 40)(-55 - 50)
a = 75/(15 x 105)
a = 1/21
Hence the region less than the equation is:
[tex]y < \frac{(x + 40)(x - 50)}{21}[/tex]
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Answer:
D
Step-by-step explanation:
What is the correct slope-intercept form of the equation y+4=2(x−3)?
Answer:
y = 2x - 10
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
given
y + 4 = 2(x - 3) ← distribute the parenthesis
y + 4 = 2x - 6 ( subtract 4 from both sides )
y = 2x - 10 ← in slope- intercept form
Which statement is true?
Answer:
can't see anything in this photo because this photo is not clear
What is the value of the discriminant, b2 − 4ac, for the quadratic equation 0 = −2x2 − 3x 8, and what does it mean about the number of real solutions the equation has?
The value of discriminant [tex]b^{2} -4ac[/tex] of the equation [tex]-2x^{2} -3x+8=0[/tex] is equal to 73.
Given equation [tex]-2x^{2} -3x+8=0[/tex] and we have to find the value of determinant and the number of roots of the equation.
Determinant is the quantity that depends on the coefficients of variables.
To find out the value of determinant we have to put the values in [tex]b^{2} -4ac[/tex] in which b=-3, a=-2 and c=8
[tex]b^{2} -4ac[/tex]=[tex]-3^{2} -4*(-2)*8[/tex]
=9+8*8
=9+64
=73
And because the value of discriminant is one so the number of real solution that [tex]-2x^{2} -3x+8=0[/tex] is 2. If the discriminant is equal to zero then there is exactly one real root.
Hence the value of determinant of the equation [tex]-2x^{2} -3x+8=0[/tex] is 73.
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(-3 ) x ( + 3 )=( - 3) * ( - 3)= ______
2 ( - 3) * ( - 3)=
3) ( + 20 ) ( + 5) = ____
4) ( + 21 ) ( - 3 ) )= ___
5) (-2) * (+3) * (- 4) = ___
6) __ (5 + 4) = 2 * 5 + 2 * 4
7) 8 * 7 + 8 * 3 = 8 (7 + ___ )
8) 6 * 5 – 6 * 2 = 6 (__ - __)
9) 5 * 3 + 10 * 3 = 3( __ + 10)
10) 8 * 4 – 8 * 2 = ___ (4 – 2)
11) 7 ( 5 – 2 ) = 7 * ___
12) 5 (2 + 4 ) = 5 * ___
13) ( 64 8 ) 2 = ___
14) 2 * ( 9 + 1 ) = 2 * ___
15) ( 100 + 10 ) 5 = _____
16) (100 – 40 ) 10 = ____
17) – 5 * 5 = ____
18) 5 * ( -6 ) = ____
19) ( + 2 ) X ( + 3) = ___
20) ( + 6 ) X ( - 2 ) = ____
Answer:
first one is x = -1
Step-by-step explanation:
if you want me to do all of them ( which I can) then ima need more points then just 5 :)
What is cos (A)?
Pls help!!
Please help ill appreciate it best answer gets the brainliest answer!!
Answer:
C
Step-by-step explanation:
because it just make sence
Answer:
McKenna runs all the way home from school ...
Step-by-step explanation:
In this distance v time graph, a negative slope means going from school to home, a positive slope means going from home to school, and a flat section means staying at a particular location without moving.
Which of the following is a root of the polynomial function below?
F(x)= x³ +3x² - 5x-4
Answer:
3
Step-by-step explanation:
jus took test
The triangular region is rotated around the X-axis. What are the name and dimensions of the solid that is created from the rotation
Answer:
coneradius 8 unitsheight 6 unitsStep-by-step explanation:
The attached image shows the figure of rotation generated by rotating a triangular shape about the x-axis.
ShapeWhen the given line is rotated about the x-axis, each point on the line traces a circle in the y-z plane. Those together will make a cone shape. The radius of the circle is the distance of the point from the x-axis.
DimensionsThe base of the cone will be the circle obtained by rotating the y-intercept about the x-axis. As above, the radius of that circular base is the y-value of the y-intercept: 8 units.
The height of the cone will be the x-value of the point where the radius is zero, at x=6.
The cone has a height of 6 units and a radius of 8 units.
Please help me solve this question
possible answers are 100, 90, 45, 135
A particle is moving along a projectile path at an initial height of 80 feet with an initial speed of 112 feet per second. this can be represented by the function h(t) = −16t2 112t 80. what is the maximum height of the particle?
Answer:
276 feet
Step-by-step explanation:
The best way to do this is to complete the square, which puts the quadratic in vertex form. The vertex of a negative parabola, which is what this is, is the highest point of the function...the max value. The k coordinate of the vertex will tell us that highest value. To complete the square, we will first set the quadratic equal to 0, then move the constant over to the other side:
The rule for completing the square is that the leading coefficient must be a positive 1. Ours is a negative 16, so we have to factor out -16:
Now the next thing is to take half the linear term, square it, and then add it to both sides. Our linear term is 7, half of that is 7/2. Squaring 7/2 gives you 49/4. So we add 49/9 into the parenthesis on the left. However, we can't forget that there is a -16 out front there that refuses to be ignored. We have to add then (-16)(49/4) onto the right:
The purpose of this is to create a perfect square binomial that serves as the h value of the vertex (h, k). Stating that perfect square on the left and doing the addition on the right:
Now we finalize by moving the constant back over and setting it back equal to y:
The vertex is
That translates to "at 3.5 seconds the particle is at its max height of 276 feet".