For function, f(-4)=20, f(0)=4, f(2)=16 and f(3)=26
What is Inequality?a relationship between two expressions or values that are not equal to each other is called 'inequality.
The given function is
f(x)= { -4x +4 for x <= 0
{ 10x - 4 for x > 0
We need to find f(-4),f(0),f(2) and f(3)
f(-4) is -4x +4 as x<=0
-4(-4)+4
16+4=20
f(-4)=20
f(0) is -4x +4 as x<=0
-4(0)+4=4
f(0)=4
f(2) is 10x - 4 as x>0
10(2)-4
20-4
f(2)=16
f(3) is 10x - 4 as x>0
10(3)-4
30-4
f(3)=26
Hence f(-4)=20, f(0)=4, f(2)=16 and f(3)=26
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Willis Rusch recently purchased a 5-lb box of treats for his dog. The total purchase price was $8.87. What was the price per pound?
Answer:
Willis paid 1.774 dollars a pound
Step-by-step explanation:
Assuming there was no tax in the purchase, you can divide 8.87/5 to get your price per pound.
please help me with this practice question
Answer:
10u^2 - 2u - 2
Step-by-step explanation:
Combine like terms:
4u^2 + 3 + 6u^2 - 2u - 5
10u^2 - 2u - 2
Triangle ABC is shown with exterior ∠z.
triangle ABC with angle A labeled 77 degrees, angle B labeled 57 degrees, and side AC extended with angle z labeled as exterior angle to angle C
Determine m∠z.
46°
77°
123°
134°
Answer:
[tex]134^{\circ}[/tex]
Step-by-step explanation:
Using the exterior angle theorem,
[tex]m\angle z=m\angle A+m\angle B=134^{\circ}[/tex]
Using the exterior angle theorem, angle z is measured as 134°.which is the correct answer that would be an option (D).
What is the Exterior Angle Theorem?The exterior angle theorem is a triangle theorem that asserts that the measure of the external angle created by an extended side of a triangle is equal to the sum of the measures of the triangle's remote interior angles.
The given data will be the following as:
Exterior angle to angle C of triangle ABC = z
The remote interior angle of triangle ABC are angled A = 58° and angle B = 44°.
Therefore:
The measure of angle z = measure of angle A + measure of angle B [according to the exterior angle theorem]
Substitute the values and we get
Measure of ∠z = 77 + 57
Measure of ∠z = 134°
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A group of friends wants to go to the amusement park. They have $284.25 to spend on parking and admission. Parking is $9.25, and tickets cost $27.50 per person, including tax. How many people can go to the amusement park?
If they have $284.25 to spend on parking and admission. Parking is $9.25, and tickets cost $27.50 per person, including tax. The number of people that can go to the amusement park is: 10 people.
How to find the number of people?Let a represent the number of people who can go to the amusement park
Formula an equation
9.25 + 27.50a = 284.25
Combine like terms
27.50a = 284.25 - 9.25
27.50a = 275
Divide both side by 27.50a
a= 275/ 27.50
a = 10 people
Therefore 10 people can go to the amusement park.
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Hey can someone please help me out on this question and explain?It’s below. Thanks so much I appreciate it:) I’ll give brainly
Answer:
153.86
Step-by-step explanation:
to get the area of the circle you take the radius to the power of 2 and then multiply with π
when the radius of circle S is half the radius of circle L and circle L has radius 14 inch, then the radius of S is 7.
area = radius² * π = 7² * π = 49 * π
π is approximately 3.14
so 49*3.14 = 153.86
Evaluate 5 + x − 6 ∙ 8 for x = 8.
33) A recipe for pancakes calls for 9 cups of
milk. Nicole has already put in 3 cups.
How many more cups does she need to put
in?
graph the linear inequality y≤-2/5x-4
The graph of the inequality, y ≤ -2/5x - 4, is shown below
Graph of Linear inequalitiesFrom the question, we are to graph the given linear inequalities.
The given linear inequalities is y ≤ -2/5x - 4.
To graph the linear inequality,
First, we will draw the line of the equation y = -2/5x - 4
To draw the line, we will use the x-intercept and y-intercept.
y-intercept
When x = 0
y = -2/5x - 4
y = -2/5(0) - 4
y = 0 - 4
y = -4
Thus, the coordinate of the y-intercept is (0, -4)
x-intercept
When y = 0
y = -2/5x - 4
0 = -2/5x - 4
4 = -2/5x
4 × 5 = -2x
20 = -2x
x = 20/-2
x = -10
Thus, the coordinate of the x-intercept is (-10, 0)
Now, using the coordinates of the x and y-intercepts, the line of the graph is shown.
Since the sign of the inequality is less than or equal to (≤), the line is a solid line and the solution is below the line.
The graph of the inequality is shown below.
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A coastline has receded 450 centimeters in 9 years. Each year, the coastline recedes the same distance. One meter is equal to 100 centimeters. How far does the coastline recede each year, in meters?
We need to determine the length per year, so take the ratio of 450/9 and simplify it.
r = 450cm/9yr
r = 50cm/1yr
r = 50cm
50cm/100cm = 1/2
So, the coastline recedes 1/2 meters every year.
Answer:0.50 meters
Step-by-step explanation:
The principal P is borrowed at a simple interest rate r for a period of time t. Find the simple interest owed for the use of the money. Assume days in a year.
P = 7000$, r = 7.5%, t =15 months
Answer:
$656.25
Step-by-step explanation:
The formula for simple interest is:
[tex]A=Prt[/tex]
Where A is the final amount, P is the principal, r is the rate, and t is the time in years.
The question does not specify whether the interest rate is annual or not, but I will assume it is! To convert 15 months to years, divide it by 12 months!
[tex]\frac{15}{12}=\frac{5}{4}=1.25[/tex]
I also need the percent to be a decimal. To convert a percent to a decimal, divide by 100.
[tex]7.5/100 = 0.075[/tex]
Now, plug the values into the formula!
[tex]A=7000*0.075*1.25\\A=656.25[/tex]
The total amount after 15 months is $656.25
Under a 750:1 magnification microscope, a paramecium has a length of
19 mm. What is the actual length of the paramecium?
Using the scale size, the actual length of the paramecium is 0.253.
In the given question we have to find the actual length of the paramecium.
Under a 750:1 magnification microscope, a paramecium has a length of
19 mm.
Using the microscope length of paramecium = 19 mm
Magnification microscope = 750:1
So the actual length of paramecium = microscope length of paramecium× scale size
The actual length of paramecium = 19× 1/750
The actual length of paramecium = 19/750
The actual length of paramecium = 0.253
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the price of an item has been reduced by $6.14. the new price is $73.59. what was the original price?
Answer:
79.73
Step-by-step explanation:
Answer:79.73
Step-by-step explanation: because if you take 6.14 and add it to 73.59 you get 79.73
A line passes through the points (14, 9) and (7, 3). What is its equation in slope-intercept form?
Answer:
solve 9 = -6/-7(14) + b this is not the answer but when you solve it that will be your answer
Step-by-step explanation:
m = y2 - y1 y = mx + b
x2 - x1 9 = -6/-7(14) + b
m = 3 - 9
7 - 14
3 - 9 = -6
7 - 14 = -7
m = -6/-7
does a low outlier cause the mean to be lower than the median?
pretty sure it does just making sure :)
Answer:
yesss
Step-by-step explanation:
i’ll mark brainliest!! helppp
Answer:
T
Step-by-step explanation:
Answer:
T
Step-by-step explanation:
T because it is the same position and Q therefore being congruent to each other, a way visualize it is to flip it and aline the lines together and see which one is the same angle as Q.
An inequality _________ always opens to the ______________ number.
Answer:
symbol
greater
Step-by-step explanation:
An inequality symbol always opens to the larger,greater,bigger number.
Examples:
5 > 1
2 > -1
-4 < 0
2 < 3
Answer: An inequality Sign always opens to the smaller number.
Step-by-step explanation:
Let f(x-3) = x2- 2x+ 7, find f(-1)
For given function f(x-3) = x^2- 2x+ 7, the value of f(-1) is 10
For given function f(x-3) = x^2- 2x+ 7 we need to find the value of f(-1)
i.e., we get an equation,
x - 3 = -1
x = -1 + 3
x = 2
Substitute x = 2 in given function,
f(-1) = (-1)^2- 2(-1) + 7
f(-1) = 1 - (-2) + 7
f(-1) = 1 + 2 + 7
f(-1) = 10
Therefore, for given function f(x-3) = x^2- 2x+ 7, the value of f(-1) is 10
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For a project in his Geometry class, Anand uses a mirror on the ground to measure the height of his school’s football goalpost. He walks a distance of 14.75 meters from the goalpost, then places a mirror on flat on the ground, marked with an X at the center. He then steps 1.3 meters to the other side of the mirror, until he can see the top of the goalpost clearly marked in the X. His partner measures the distance from his eyes to the ground to be 1.45 meters. How tall is the goalpost? Round your answer to the nearest hundredth of a meter.
The height of the goalpost is 16.45 m.
Given, Anand uses a mirror on the ground to measure the height of his school’s football goalpost.
He walks a distance of 14.75 meters from the goalpost, then places a mirror on flat on the ground, marked with an X at the center.
He then steps 1.3 meters to the other side of the mirror, until he can see the top of the goalpost clearly marked in the X.
His partner measures the distance from his eyes to the ground to be 1.45 meters.
we are asked to determine the height of the goalpost = ?
As per the rule of reflection in physics,
Angle of incidence = Angle of reflection
As we can see in the picture attached, both the angles (θ) are equal.
m∠ACB = m∠ECD = 90° - θ
m∠ABC = m∠ADC = 90°
Therefore, both the triangles ΔABC and ΔEDC will be similar.
And by the property of similar triangles, their corresponding sides will be proportional.
AB/ED = CB/CD
1.45/ED = 1.3/14.75
ED = 14.75×1.45/1.3
ED = 16.45 m
Hence the height of the goal post is 16.45 m
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Geometry gina Wilson help plsss
Answer: m<BCA = 57°
Step-by-step explanation:
180-(10x-37)°
180-(10x(16)-37)°
180-123
57°
A manager at SUBWAY wants to find the total cost of 24.8 pounds of sliced turkey at $1.89 a pound and 38.2 pounds of provolone cheese at $2.05 a pound. Find the final
cost. [1.4 and 1.5]
The final cost of the sliced turkey and provolone cheese is $31.84
How to calculate the final cost of both products?The first step is to calculate the cost of the sliced turkey
The pounds of turkey is 24.8
The amount of the turkey is $1.89
The cost is = 24.8/1.89
= 13.21
The next step is to calculate the cost of the provolone cheese
The pounds of the provolone cheese 38.2
The amount of provolone cheese is $2.05
The cost is = 38.2/2.05
= 18.63
Therefore the final cost can be calculated as follows
= 13.21 + 18.63
= 31.84
Hence the final cost is $31.84
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c. Sandra sleeps for one-third of the day.
How many hours is that?
d. Sandra visits her family and friends for one-eighth of the day.
How many hours is that?
Answer:
8 hours
3 hours
Step-by-step explanation:
24/3=8
24/8=3
Alton estimated that 240 people attended the band concert. The actual count for attendance was 200 people. Find the percent of error.
8%
17%
20%
40%
it's not 17% so
a tank is filled with petrol at 35 litres per minute. the tank already had 10 liters in it before the filling began. write an equation in standard form for this situation.
The equation for a tank that is filled with petrol at 10 liters already and filling at 35 liters per minute is y = 35x + 10
How to write expression for a filling a tankThe equation required here is a linear equation
The graph of linear equation is a straight line graph and the relationship is expressed in the form.
y = mx + c
variables are defined as below
y = total petrol in liters
m = filling in liters per minute = 35
x = number of liters
c = quantity before the filling began = 10
The expression is
y = 35x + 10
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What are the coordinates of the point on the directed line segment from (-10, 2) to
(-3,-5) that partitions the segment into a ratio of 4 to 3?
The coordinates of the point on the directed line segment from (-10, 2) to (-3,-5) that partitions the segment into a ratio of 4 to 3 is (-6,-2).
Given:
we have two points :
(-10, 2) to (-3,-5)
and the ratio which partitions the segment is:
4:3
we are asked to determine the coordinates of the point.
Let the given points (-10,2) be (x₁, y₁) and (-3,-5) be (x₂, y₂) and the ratio be m:n.
Using section formula to find the coordinates:
x = (mx₂ + nx₁)/(m+n)
= {4(-3) + 3(-10)} /(4+3)
= -12-30/7
= -42/7
= -6
y = (my₂ + ny₁)/(m+n)
= {4(-5) + 3(2)} / (4+3)
= -20+6/7
= -14/7
= -2
Therefore, the required point is (-6,-2)
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Se divide una suma de Gs. 1.365.000 en tres capitales. Colocados respectivamente al 2%, 3% y 4%, producen el mismo interés simple anual. Calcula dichos capitales
Los capitales depositados en las cuentas de 2 %, 3 % y 4 % son 630.000, 420.000 y 315.000, respectivamente.
¿Cuántos capitales se deben ingresar en tres cuentas para obtener ganancias por interés simple?
En este problema tenemos el caso de una suma de dinero distribuida y depositada en tres cuentas con tres tasas de interes simple distintas. Existe una tasa de interés simple cuando el interés generado sobre el capital no es acumulativo en el tiempo. El modelo de interés simple es descrito por la siguiente fórmula:
C' = C · (1 + r / 100)
Donde:
C - Capital inicial.C' - Capital final.r - Tasa de interés, en porcentaje.A continuación, describimos la ganancia registrada en cada cuenta tal que produce la misma ganancia:
Cuenta al 2 %:
z = x · (2 / 100)
z = 0.02 · x
0.02 · x - z = 0
Cuenta al 3 %:
z = y · (3 / 100)
z = 0.03 · y
0.03 · y - z = 0
Cuenta al 4 %:
z = (1.365.000 - x - y) · (4 / 100)
z = 54600 - 0.04 · x - 0.04 · y
0.04 · x + 0.04 · y + z = 54600
La solución de este sistema de ecuaciones lineales se obtiene mediante métodos numéricos:
(x, y, z) = (630.000, 420.000, 12.600)
Finalmente, el capital depositado en la cuenta al 4 % es:
c = 1.365.000 - 630.000 - 420.000
c = 315.000
Se deposita capitales de 630.000, 420.000 y 315.000 en las cuentas de 2 %, 3 % y 4 %, respectivamente.
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16 divided by 20 in decimal form
Answer:
0.8
Step-by-step explanation:
[tex]\frac{16}{20} =\frac{4(4)}{4(5)}=\frac{4}{5}=0.8[/tex]
Answer: 0.8
Step-by-step explanation:
16/20=4/5, which is the equivalent to 0.8
Use your calculator to find the angle, to the nearest hundredth of a degree, whose cosine value is 1/7
The angle with cosine value of 1/7 is 81.79°
How to determine the angle?Trigonometry is the branch of mathematics that deals with the relationship between ratios of the sides of a right-angled triangle with its angles
Given that: the cosine value of the angle is 1/7
Let the angle be θ. Then we can write that:
cos θ = 1/7
θ = cos⁻¹ (1/7) (Take the inverse of cosine on both sides)
θ = 81.79°
Note: To get cos⁻¹ on your calculator, press the shift button followed by the cos button
Therefore, the angle is 81.79°
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What is the value of the
underlined digit?
5,678.321 6# ñame
The value of the underlined digit is 600.
What is the place value strategy?
The place value strategies are defined as math strategies that use to assist you in resolving your elementary math problems, use your places values, such as tens and hundreds. It is possible to employ enlarged notation or compensation. Using regrouping techniques, you can make the problem easier by compensating for addition.
We must determine the values of each integer in order to calculate the value of the underlined digit (6) in the equation.
In 5,678.321, the first digit, 5, is 1,000 in the thousands of places.
The second digit, 6, is in the hundreds (100) place.
So the value is 600.
Hence the answer is, the value of the underlined digit is 600.
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Race times for a recent 5k
run are normally distributed with a mean
time of 38 minutes and standard devia-
tion of 3.5 minutes.
(a) What is the median race time for this
event?
The median race time for this event is 38 minutes.
Given:
Race times for a recent 5k run are normally distributed with a mean time of 38 minutes and standard deviation of 3.5 minutes.
a.
X is normally distributed in (38,3.5).
so here the mean and the median are equal to each other.
Mean = 38
Median = mean
Median = 38 minutes.
Therefore the median race time for this event is 38 minutes.
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A park is planning a rectangle shaped koi pond with an area given by the expression 4d2 + 8d square feet. Draw one possible design for the koi pond and label the dimensions for length and width
The general rule for the dimensions will be 4d and (d + 2) after taking d = 1, the dimensions are 4 and 3 feet
What is the area of the rectangle?It is defined as the area occupied by the rectangle in two-dimensional planner geometry.
The area of a rectangle can be calculated using the following formula:
Rectangle area = length x width
It is defined as two-dimensional geometry in which the angle between the adjacent sides is 90 degrees. It is a type of quadrilateral.
It is given that:
A park is planning a rectangle-shaped koi pond with an area given by the expression 4d² + 8d square feet.
= 4d(d + 2)
The dimensions could be 4d and (d + 2)
Let d = 1
The dimensions are 4 and 3 feet
Thus, the general rule for the dimensions will be 4d and (d + 2) after taking d = 1, the dimensions are 4 and 3 feet
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