The corresponding element in the range when 7 is an element in the domain is f(5)=179/5
Step-by-step explanation:
Given that the 5 is an element in the domain of f(x)
The function f is defined by f(x)=8x-21/5
To find the corresponding element in the range:
That is put x=5 in the given function f(x)
Therefore f(x) becomes
f(5) = 8(5)-21/5
=40-21/5
=179/5
Therefore corresponding element in the range when 5 is an element in the domain is f(5)=179/5
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A pentagon the Measures of four of its angle are shown bellow: what is the value of x?
Answer:
See below.
Step-by-step explanation:
The sum of the measures of the interior angles of an n-sided polygon is
(n - 2)180
A pentagon has 5 sides, so for a pentagon, n = 5.
(n - 2)180 = (5 - 2)180 = 3(180) = 540
The sum of the measures of the angles of a pentagon is 540.
You don't show the measures of the 4 angles that are known, so to answer the question, add the 4 given measures and subtract the sum from 540.
Select the three equations that pass through the points (-4, -16) and (5,2).
y + 4 = 2(x - 16)
y-2 = 2(x - 5)
y=2x-8
y + 16 = 2(x + 4)
DONE
Answer:
It's B,C,D
Step-by-step explanation:
Answer:
its b,c, and d
Step-by-step explanation:
the sum of two numbers is 158.if we add 25 to each one of them,then the first becomes the triple of the other.what are these numbers
Answer:
Why is 90 the sum of all factors of 40, including 40? The factors of the number 40 are: 1, 2, 4, 5, 8, 10, 20, 40. If you add them up, you will get the total of 90.
Step-by-step explanation:
2. Given the points A, B, C, D, calculate:
(a) the angle B of the triangle ABC
(b) the area of the triangle ABC
(c) the median BE of the triangle ABC
(d) the height AH of the triangle ABC
(e) the volume of tetrahedron ABCD
(f) the point E so that ABCE is a parallelogram.
A(-1, 2, -3), B(4, -1, 0), C(2, 1, -2), D( 3,4,5)
what is 100-100-100-100-100-100-100-100-100-100-100-100
Answer:
-1000
Step-by-step explanation:
(100-100)-(100+100+100+100+100+100+100+100+100+100)=
= 0 - (100+100+100+100+100+100+100+100+100+100)
= -(100 + 100+100+100 + 100+100+100 + 100+100+100)
= -(100×10)
= - 1000
Answer:
-1000
Step-by-step explanation:
What is 4 9/8 as a simplified fraction
Answer:
5 1/8
Step-by-step explanation:
4 9/8 is an improper fraction since the numerator is greater than the denominator. To simplify it, you can find how many total eighths there are. 4*8 = 32, and 32 + 9 = 41. Therefore, there are 41/8. There are 5 eights in 41, with one as a remainder, so 4 9/8 simplifies to 5 1/8.
The value of the mixed number A = 4 9/8 is A = 5 1/8
What are Mixed Numbers?A mixed number is a whole number, and a proper fraction represented together. A mixed number is formed by combining three parts: a whole number, a numerator, and a denominator. The numerator and denominator are part of the proper fraction that makes the mixed number.
Given data ,
Let the mixed number be represented as A
Now , the value of A is
A = 4 9/8 be equation (1)
On simplifying the equation , we get
A = 4 9/8
A = ( 32 + 9 ) / 8
A = 41 / 8
Now , the value of A is an improper fraction , and to convert in into a mixed number , we get
The value of A = 5 1/8
Therefore , the value of A is 5 1/8
Hence , the mixed number is 5 1/8
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Find the measure of x in each figure
Answer:
The answer is in both because, the x goes into 3 accordingly. Also in 30 degrees you move upward, and they both factor into the same equations.
Answer:
Step-by-step explanation:
The track is 3 miles long and it takes between 1 hour and 1 hour 10 minutes for the train to climb to the top. What is the average speed for the train: when the journey takes 1 hour ?
Answer:
3 Miles per hour, or .05 Miles per minute
Step-by-step explanation:
Dudley Greene's charge account statement shows an unpaid balance of $376.00. The monthly finance charge
is 1.85 percent of the unpaid balance. What is the finance charge?
Answer:
The finance charge is $6.96.
Step-by-step explanation:
Given:
Dudley Greene's charge account statement shows an unpaid balance of $376.00.
The monthly finance charge is 1.85 percent of the unpaid balance.
Now, to find the finance charge.
Unpaid balance = $376.00.
Finance charge = 1.85% of unpaid balance.
So, to get the finance charge:
1.85% of $376.00.
[tex]=\frac{1.85}{100} \times 376.00[/tex]
[tex]=0.0185\times 376.00[/tex]
[tex]=\$6.96.[/tex]
Therefore, the finance charge is $6.96.
The equation can be used to find the measure of angle LKJ. Triangle L K J is shown. Angle J L K is a right angle. The length of L K is 7.7 centimeters and the length of L J is 8.9 centimeters. Angle L K J is x. What is the measure of angle LKJ? Round to the nearest whole degree. 41° 45° 49° 55°
Answer:
C, 49°.
Step-by-step explanation:
Cause i said so
Answer:
C, 49.
Step-by-step explanation:
Triangle X Y Z is cut by line segment C D. Line segment C D goes from side X Y to side Y Z. The length of C D is 15, the length of X Z is 18, the length of C Y is 25, and the length of Y D is 20. Lines C D and X Z are parallel. If and CX = 5 units, what is DZ? 2 units 3 units 4 units 5 units
The length of DZ is 4 units ⇒ 3rd answer
Step-by-step explanation:
Triangle X Y Z is cut by line segment C D, where
C lies on side XY and D lies on the side YZThe length of C D is 15The length of X Z is 18The length of C Y is 25The length of Y D is 20C D and X Z are parallelCX = 5 unitsWe need to find the length of DZ
In Δ XYZ
∵ C ∈ XY and D ∈ YZ
∵ CD // XZ
∴ m∠YCD = m∠YXZ ⇒ alternate angles
∴ m∠YDC = m∠YZX ⇒ alternate angles
In Δs YCD and YXZ
∵ m∠YCD = m∠YXZ
∵ m∠YDC = m∠YZX
∵ ∠Y is a common angle
∴ Δ YCD is similar to Δ YXZ by AAA postulate
- There is a constant ratio between their corresponding sides
∴ [tex]\frac{YC}{YX}=\frac{CD}{XZ}=\frac{YD}{YZ}[/tex]
∵ YC = 25 units
∵ CX = 5 units
∵ YX = YC + CX
∴ YX = 25 + 5 = 30 units
∵ YD = 20 units
∵ YZ = YD + DZ
∴ YZ = 20 + DZ
Let us use the ratio of the corresponding side
∵ [tex]\frac{YC}{YX}=\frac{YD}{YZ}[/tex]
∴ [tex]\frac{25}{30}=\frac{20}{20+DZ}[/tex]
- Simplify [tex]\frac{25}{30}[/tex] by dividing up and down by 5
∵ [tex]\frac{25}{30}=\frac{5}{6}[/tex]
∴ [tex]\frac{5}{6}=\frac{20}{20+DZ}[/tex]
- By using cross multiplication
∴ 5(20 + DZ) = 6(20)
∴ 100 + 5 DZ = 120
- Subtract 100 from both sides
∴ 5 DZ = 20
- Divide both sides by 5
∴ DZ = 4 units
The length of DZ is 4 units
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Answer:
on edge the answer is C.
Step-by-step explanation:
bc it is
f(x) = -x^3+ 6x – 7 at x = 2
Answer:
f(2)= -4
Step-by-step explanation:
f(x)= -x^3 + 6x - 7
f(2) = -2^3 + 6*2 - 7
f(2)= -8 +12 -7
f(2)= 3-7
f(2)= -4
The value of the function f(x)=-x^3+6x-7 at x=2 is -3.
Explanation:To find the value of the function f(x) = -x^3 + 6x - 7 at x = 2, we substitute the value of x into the function.
So, f(2) = -(2)^3 + 6*(2) - 7 = -8 + 12 - 7 = -3.
Thus, the value of the function at x = 2 is -3. This is a simple algebraic operation involving cubes and multiplication, which are basic arithmetic operations.
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4 decimals whose sum is 2.35
Answer:
One way you can solve this problem would be to take 2.35/4
2.35/4= .5875
Then you can add .5875 + .5875 +.5875 +.5875
Which equals 2.24
.5875 + .5875 +.5875 +.5875
Hope this helps ;)
To find four decimals whose sum is 2.35, you can set up a system of equations and solve for the values. The four decimals are 0.10, 0.20, 0.15, and 0.15.
Explanation:The question is asking for four decimals whose sum is 2.35. To find these decimals, we can assign variables to each decimal (let's call them a, b, c, and d) and set up an equation: a + b + c + d = 2.35. Since we want the decimals to have only two places after the decimal point, we can express them in hundredths. For example, instead of 0.1, we can write it as 10/100 = 0.10.
Now, we can set up a system of equations:
a + b + c + d = 2.35
a = 10/100
b = 20/100
c = 15/100
d = 15/100
By substituting the values back into the first equation, we have: (10/100) + (20/100) + (15/100) + (15/100) = 2.35. Simplifying the equation, we have 0.10 + 0.20 + 0.15 + 0.15 = 0.60. Therefore, the four decimals whose sum is 2.35 are 0.10, 0.20, 0.15, and 0.15.
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Which function has a range of y < 3?
y=3(2)*
y=2(3)
y=-(2)*+ 3
O y=(2]*_3
Answer:
The function given by [tex]y = - (2)^{x} + 3[/tex] will have a range of y < 3.
Step-by-step explanation:
The function given by [tex]y = - (2)^{x} + 3[/tex] will have a range of y < 3.
This is because, for any real values of x, the term [tex]- (2)^{x}[/tex] will have a negative value. If we put x = 1, then, [tex]- (2)^{x}[/tex] = - 2, and for x = -1, then [tex]- (2)^{x}[/tex] = - 0.5.
That means [tex]- (2)^{x} < 0[/tex] for all real x.
Hence, [tex]- (2)^{x} + 3[/tex] < 0 + 3
⇒ y < 3 for all real x. (Answer)
joshua has only dimes and pennies in his piggy bank. he has a total of $23.00 in his bank. the amount of pennies is 20 more than 10 times the amount of dimes. how many dimes and pennies are there
There are 1160 pennies and 114 dimes in the piggy bank.
Step-by-step explanation:
Given,
Worth of money = $23.00 = 23*100 = 2300 cents
1 penny = 1 cent
1 dime = 10 cents
Let,
x be the number of pennies
y be the number of cents
According to given statement;
x+10y=2300 Eqn 1
x = 10y+20 Eqn 2
Putting value of x from Eqn 2 in Eqn 1
[tex]10y+20+10y=2300\\20y=2300-20\\20y=2280[/tex]
Dividing both sides by 20
[tex]\frac{20y}{20}=\frac{2280}{20}\\y=114[/tex]
Putting y=144 in Eqn 2
[tex]x=10(114)+20\\x=1140+20\\x=1160[/tex]
There are 1160 pennies and 114 dimes in the piggy bank.
Keywords: linear equation, substitution method
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Final answer:
Joshua has 114 dimes and 1160 pennies in his piggy bank. This was determined by setting up a system of equations based on the values of the coins and the given relationship between the number of dimes and pennies.
Explanation:
The problem presented is a typical algebraic word problem that requires setting up equations based on the given information about dimes and pennies. We are told that the total value of the coins is $23.00 and that the number of pennies is 20 more than 10 times the number of dimes. To solve the problem, we need to use the fact that the value of a dime is 10 pennies, and then set up a system of linear equations to find the number of each type of coin.
Step-by-Step Explanation
Let's denote the number of dimes as d and the number of pennies as p.The value of the dimes is 10d pennies since each dime is worth 10 pennies.The total value of the dimes and pennies is 23 dollars or 2300 pennies (since 1 dollar equals 100 pennies).According to the problem, p = 10d + 20.The equation representing the total value is thus 10d + p = 2300.Substituting p from the first equation into the second gives us: 10d + (10d + 20) = 2300.Simplifying this equation, we get 20d + 20 = 2300.Subtracting 20 from both sides, we get 20d = 2280.Dividing both sides by 20, we find out that d = 114.Substituting d back into the first equation to find p, p = 10(114) + 20 which gives us p = 1160.Thus, Joshua has 114 dimes and 1160 pennies in his piggy bank.
Determine the diameter of a curcle with the radius 12.2
Answer:
24.4
Step-by-step explanation:
diameter=2*radius
=2*12.2
=24.4
Final answer:
The diameter of a circle with a radius of 12.2 is 24.4 units. This is calculated by doubling the radius, using the formula D = 2r.
Explanation:
To determine the diameter of a circle with a radius of 12.2, you simply need to use the relationship between the radius and the diameter of a circle. The diameter is twice the radius, which can be represented by the formula D = 2r, where D is the diameter and r is the radius.
Substituting the value of the radius into the formula gives us:
D = 2 × 12.2
This calculates to:
D = 24.4
Therefore, the diameter of the circle is 24.4 units. Keep in mind that if the radius was given in a specific unit, like meters or centimeters, then the diameter will be in the same unit.
A circle is shown that the radius is 16ft
Sarah wants to place a rim around her circular pool with a foam rim. The foam rim is
sold in boxes that will cover the length of 40 feet. How many boxes of foam rim will
Sarah need to place around the rim of the pool?
4 boxes
(A) 3 boxes
(B) 4 boxes
(C) 5 boxes
(D) 6 boxes
Answer:
3 boxes.
Step-by-step explanation:
The circular pool has a radius of 16 feet.
So, the circumference of the pool will be 2πr = [tex]2 \times \frac{22}{7} \times 16 = 100..57[/tex] feet.
Therefore, to place a rim around the circular pool with a foam rim Sarah will need 100.57 feet length of foam rim.
Now, the foam rim is sold in boxes that will cover the length of 40 feet.
Therefore, she will need [tex]\frac{100.57}{40} = 2.51[/tex] ≈ 3 boxes to place around the rim of the pool. (Answer)
Speed, Time, and Dis
1 a. Noah rides his bike with a constant
speed of 18 km/h. How long will he
take to travel a distance of
54 kilometers?
Answer:
3 hours
Step-by-step explanation:
Recall:
Distance = speed x time
we are given that speed = 18 km/h and distance = 54 km.
hence,
54 = 18 x time (divide both sides by 18 and rearrange)
time = 54/18 = 3 hours
Noah will take 3 hours to travel a distance of 54 kilometers at a constant speed of 18 km/h.
To determine how long Noah will take to travel a distance of 54 kilometers at a constant speed of 18 km/h, we can use the formula for time, which is:
Time = Distance / Speed
Let's calculate Noah's travel time:
Time = 54 km / 18 km/h = 3 hours
Noah will take 3 hours to cover the 54-kilometer distance on his bike.
In a survey of 3300 people who owned a certain type of car, 825 said they would buy that type of car again. What percent of the people surveyed were satisfied with the car?
Answer: 25%
Step-by-step explanation:
Since 825 people said they would buy the car again, it means they were satisfied with the car
Therefore, the percentage of those satisfied with the car is = (825/3300) x 100 = 25%
A party rental company has chairs and tables for rent. The total cost to rent 3 chairs and 2 tables is $22. The total cost to rent 5 chairs and 6 tables is $60. What is the cost to rent each chair and each table?
Answer:
The cost to rent each chair and each table are $1.5 and $8.75 respectively
Step-by-step explanation:
Let x represent 1 chair
Let y represent 1 table
Therefore
3x + 2y = 22 ------------(1)
5x + 6y = 60 ------------(2)
Multiply (1) by 5 and (2) by 3
15x + 10y = 110 ----------(3)
15x + 18y = 180 ------------(4)
Subtract (3) from (4)
8y = 70
Divide through by 8
y = $8.75
Substitute y = 8.75 in (1)
3x + 2y = 22
3x + 2(8.75) = 22
3x + 17.5 = 22
Collect like terms
3x = 22 - 17.5
3x = 4.5
Divide through by 3
x =$1.5
Final answer:
By setting up a system of linear equations based on the given information and solving it, we determined that the cost to rent each chair is $1.50 and the cost to rent each table is $8.75.
Explanation:
To find the cost to rent each chair and each table from the party rental company, we set up a system of linear equations based on the information given:
3 chairs and 2 tables cost $22.5 chairs and 6 tables cost $60.Let C be the cost of one chair and T be the cost of one table. We can write the following equations:
3C + 2T = $225C + 6T = $60Solving this system of equations, we can find the values of C and T. First, multiply the first equation by 3 to eliminate T:
(3C + 2T) * 3 = 22 * 39C + 6T = $66Now we can subtract the second equation from the modified first equation:
9C + 6T - (5C + 6T) = $66 - $604C = $6C = $1.50With the cost of a chair known, we can substitute back into either equation to find the cost of a table:
3(1.50) + 2T = $224.50 + 2T = $222T = $22 - 4.502T = $17.50T = $8.75The cost to rent each chair is $1.50 and the cost to rent each table is $8.75.
Students played dodgeball and volleyball for 45 min.They played dodgeball for 11 more minuets than volleyball.How long did they play Dodgeball
Answer:
28 minutes
Step-by-step explanation:
d + v = 45
d = v + 11
time to sub
(v + 11) + v = 45
2v + 11 = 45
2v = 45 - 11
2v = 34
v = 34/2
v = 17 minutes.........volleyball
d = v + 11
d = 17 + 11
d = 28 minutes <=== dodge ball
Answer:
28 mins.
Step-by-step explanation:
A line has a slope of -3/4 and has a y intercept of 3. What is the x intercept of the line
Answer:
The x-intercept is 4
Step-by-step explanation:
We are given;
The slope of a line as -3/4
y-intercept is 3
We are supposed to determine the x-intercept;
We need to know that;
The slope of a line is given by the ratio of the change in y to the change in x
The coordinates of y-intercept are (0, 3)
Taking the x-intercept as a, then the coordinates of x-intercept is (a, 0)
But;
slope = Δ in y ÷ Δ in x
Therefore;
[tex]\frac{0-3}{a-0}= \frac{-3}{4}[/tex]
Solving for a
[tex]-3a = -12 \\ a =4[/tex]
Therefore, the x-intercept is 4
Where in the world may a person walk one mile west, and then one mile north and arrive back at the starting point
Answer:
North Pole
Step-by-step explanation:
Answer:
So your walk of 1 mile West is a complete circle. You then walk 1 mile North, which brings you back to your starting point, (1 + 1/(2pi)) miles from the South Pole. The obvious answer is the North Pole. You're either on the North Pole, or somewhere very near (about 840 feet or less) the South Pole.-step explanation:
A population y of coyotes in a national park triples every 20 years. The function y = 15(3)^x
represents the population, where x is the number of 20 year periods.
a. Find and interpret the y-intercept.
b. How many coyotes are in the national park in 40 years?
Answer:
a. y int. = initial amount of coyotes
b. 135 coyotes
Step-by-step explanation:
a. when x = 0, you get y int. = 15 coyotes. This shows that at the very beginning, you had 15 coyotes.
b. 40 years = two 20 year periods. x = 2 after 40 years
y = 15 * (3)^2
y = 135 coyotes
a. y int. = initial amount of coyotes
b. 135 coyotes
The calculation is as follows:a. when x = 0, you get y int. = 15 coyotes.
This represent that at the very beginning, you had 15 coyotes.
b. 40 years = two 20 year periods. x = 2 after 40 years
[tex]y = 15 \times (3)^2[/tex]
y = 135 coyotes
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I need help please and thank you
Answer:
58 degrees
Step-by-step explanation:
All triangles measure up to 180 degrees.
180-87-35=58
You are trying to order 1/4 pound of saffron, but the ordering system wants a decimal.What should you type in?
Answer:
Step-by-step explanation:
1/4 = (1 divided by 4) = 0.25
To convert 1/4 pound of saffron to a decimal for an ordering system, divide 1 by 4, resulting in 0.25. Therefore, the appropriate decimal to enter is 0.25.
The question involves converting a fraction to a decimal for the purpose of entering an order quantity in a system. In this case, we want to convert 1/4 pound of saffron into a decimal. To do this, simply divide the numerator (1) by the denominator (4). Therefore, 1 divided by 4 equals 0.25. Hence, you should type 0.25 into the ordering system to order 1/4 pound of saffron.
What is a equal to?
12=2a
Using the balance method, we find a = 15 by isolating the variable a. Substituting a = 15 back into the original equation, we verify the solution.
To solve the equation 12 = 2a - 18 using the balance method, we aim to isolate the variable a on one side of the equation.
Starting with 12 = 2a - 18, we'll first add 18 to both sides to isolate the term with 2a:
[tex]\[12 + 18 = 2a - 18 + 18\]\[30 = 2a\]\\[/tex]
Next, we divide both sides by 2 to solve for a:
[tex]\[\frac{30}{2} = \frac{2a}{2}\]\[15 = a\][/tex]
Now, let's verify the solution by substituting a = 15 back into the original equation:
[tex]\[12 = 2(15) - 18\]\[12 = 30 - 18\]\[12 = 12\][/tex]
Since the left side equals the right side, the solution a = 15 is verified.
Complete Question:
Solve the following equation using balance method and verify 12 = 2a - 18
A technology company produces two types of calculators.
• They must produce at least 10 and not more than 30 graphing calculators per day.
• Each day, the number of graphing calculators cannot exceed twice the number of scientific calculators produced.
• The number of scientific calculators cannot exceed 40 per day.
If x is the number of graphing calculators produced daily and y is the number of scientific calculators produced daily, what are the constraints ?
10 ≤ x ≤ 30, x < 2y, x < 40.
Solution:
Given x is the number of graphing calculators produced daily and
y is the number of scientific calculators produced daily.
Step 1: A company produce atleast 10 and not more than 30 graphing calculators per day.
⇒ 10 ≤ x < 30
Step 2: Each day, the number of graphing calculators cannot exceed twice the number of scientific calculators produced.
⇒ x < 2y
Step 3: The number of scientific calculators cannot exceed 40 per day.
⇒ x < 40
Hence, the constraints are 10 ≤ x ≤ 30, x < 2y, x < 40.
What is 4 1/2 + 3 1/4
Add the whole numbers 4 + 3 = 7
Add the fractions 1/2 + 1/4
Rewrite 1/2 to have a common denominator with 1/4
1/2 = 2/4
Now add 2/4 + 1/4 = 3/4
The answer would be 7 3/4
What is the answer for 4/8-2/5
Answer:
4/8 - 2/5 = 1/10
What is the slope of a line that passes through (5,-5) and (-6, -4)
Answer: m = [tex]\frac{-1}{11}[/tex]
Step-by-step explanation:
The slope of a line is calculated by :
m = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
[tex]x_{1}[/tex] = 5
[tex]x_{2}[/tex] = -6
[tex]y_{1}[/tex] = -5
[tex]y_{2}[/tex] = -4
substituting the values , we have :
m = [tex]\frac{-4-(-5)}{-6-5}[/tex]
m = [tex]\frac{-4+5}{-11}[/tex]
Therefore :
slope = [tex]\frac{-1}{11}[/tex]