Answer:
75 min or 1 hour 15 min
Step-by-step explanation:
20 is 50% of 40 so add 50% of 50 min to the total. Half of 50 is 25 so you add 25 min
Answer:
if bill takes
40 customers =50 minutes
20 customers= 50÷2 =25 minutes
so 50 minutes + 25 minutes= 75 minutes in total.
I really need help with how to do this . It’s a little bit confusing . Thank you
Answer:
just fix the cilcle more it have it looing for the answer
Step-by-step explanation:
that all i got i wish i can help u more
For a fundraiser, a school club is selling raffle tickets for $2 each and healthy snacks for $1.50 each. What is the cost of: 7 tickets and 5 snacks?
A craftsman wants to build this fiddle. He needs to know the area of the face of the fiddle. How could he use the measurements shown to find the area? Use your strategy to find the area of the face of
the fiddle.
Max is building a set of shelves. he buys a board that is 4 yards long. he wants to cut as many pieces of board that are 3/4 yard long as he can. how many pieces can he cut? will he have any board left over? if so how much?
If Max is building a set of shelves and he buys a board that is 4 yards long and he wants to cut as many pieces of board that are 3/4 yards long as he can, then the no of pieces he can cut is 5 and he will have 0.25 yards of board left over.
3/4 is a fraction which can be represented as,
3/4 = 0.75
The number of pieces of board that Max can cut that is 4 yards long can be determined by the division of the length of the board by the length of the cut pieces. Therefore,
number of pieces cut = length of the board ÷ length of a cut piece
number of pieces cut = 4 ÷ 0.75
number of pieces cut = 5.33, that is round off to 5
Thus he can cut 5 pieces of 3/4 yards.
As 5 × 3/4 = 3.75 yards
The remaining yards of the board can be calculated by subtraction.
Board leftover = 4 - 3.75 = 0.25 yards
Hence, Max can cut 5 pieces of 3/4 yards and will have 0.25 yards of the board left over.
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Determine whether each set of numbers can be the measures of the sides of a triangle. If so, classify the triangle as acute, obtuse, or right. Justify your answer.
10,12,23
The following set of numbers, 10, 12, and 23, cannot be the measures of the sides of a triangle.
A triangle is a polygon with three sides and three vertices.
To know if a set of number is a valid measure of the sides of a triangle, it must follow the Triangle Inequality Theorem which states that the sum of any two sides must be greater than the third side, such that a + b > c, a + c > b, and b + c > a.
let a = 10, b = 12, and c = 23
a + b > c 10 + 12 > 23 22 > 23 False
a + c > b 10 + 23 > 12 33 > 12 True
b + c > a 12 + 23 > 10 35 > 10 True
If at least one of these three statements is not true, then the set of numbers is not a valid measure of the sides of a triangle.
Hence, the set of numbers 10, 12, and 23 can not be the measure of the sides of a triangle.
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A) x^8 • x^6 = x^p, where is p=
B) (x^8)^6 = x^r, where is r
Answer: p=14, r=48
Step-by-step explanation:
x^8 • x^6 = x^p
x^(8+6) = x^p
8+6=p
p=14
(x^8)^6 = x^r
x^(8*6)=x^r
8*6=r
r=48
f(x)=2x - 2 ; Find f(1)
Answer:
0
Step-by-step explanation:
Substitute x for 1 and solve.
2(1) -2
2-2
0
Answer:
0 I belive
Step-by-step explanation:
f(x) =2x-2
f(1)= 2(1)-2
2-2
f(1)= 0
MATH HELPERS !!! word problems involving average rate of change Please answer correctly, I have this and one more afterwards, but can only post if this is correct
(a) 2.1°C per minute
(b) 1.9°C per minute
Step-by-step explanation:(a)
O min = 222.6°C [Given]10 min = 205.6°C [Given]Difference of time = 10 minDifference of Celcius = (222.6 - 205.6)°C = 21.0°C[tex] \bf \frac{celcius}{time} = \frac{21.0}{10} = 2.1°C\: per\: minute [/tex]_____________________(b)
30 min = 157.6°C [Given]50 min = 119.6°C [Given]Difference of time = 20 minDifference of Celcius = (157.6 - 119.6)°C = 38.0°C[tex] \bf \frac{celcius}{time} = \frac{38.0}{20} = 1.9°C \:per \:minute [/tex]How can translating written words into a numerical expression be helpful?
Solve each equation. Check each solution. y/5 + y/2 = 7
The solution of the above equation y/5 + y/2 = 7 for y is 10.
According to the given question.
We have an equation y/5 + y/2 = 7.
Since, we have to solve the above equation y/5 + y/2 = 7 for y.
Therefore, the solution of the above equation for the above equation y/5 + y/2 = 7 is given by
y/5 + y/2 = 7
⇒ (2y + 5y)/10 = 7
⇒ 7y /10 = 7
⇒ 7y = 70
⇒ y = 70/7
⇒ y = 10
Hence, the solution of the above equation y/5 + y/2 = 7 for y is 10.
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Choose an equivalent expression for two thirds to the fourth power times two thirds raised to the third power comma all raised to the second power.
four ninths raised to the fourteenth power
four ninths raised to the twenty fourth power
two thirds raised to the fourteenth power
two thirds raised to the twenty fourth power
The equivalent expression for the given expression is [tex](\frac{2}{3} )^{14}[/tex]. Therefore, option C is the correct answer.
The given expression is [tex]((\frac{2}{3} )^{4}\times(\frac{2}{3} )^{3})^{2}[/tex].
We need to find the equivalent expression for the given expression.
What is an equivalent expression?Equivalent expressions are expressions that work the same even when they seem different. When we enter the same value for the variable, two algebraic expressions that are equivalent have the same value.
Now, [tex]((\frac{2}{3} )^{4}\times(\frac{2}{3} )^{3})^{2}[/tex] using [tex]a^{m} \times a^{n}=a^{m+n}[/tex].
We get, [tex]((\frac{2}{3} )^{4+3})^{2}=((\frac{2}{3} )^{7})^{2}[/tex]
Using the exponents rule [tex](a^{m} )^{n}=a^{m\times n}[/tex]
=[tex]=(\frac{2}{3} )^{7\times 2}=(\frac{2}{3} )^{14}[/tex]
The equivalent expression for the given expression is [tex](\frac{2}{3} )^{14}[/tex]. Therefore, option C is the correct answer.
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He made that poor piano moan with melody.
O Blues!
Swaying to and fro on his rickety stool
He played that sad raggy tune like a musical fool.
Sweet Blues!
Coming from a black man's soul.
O Blues!
In a deep song voice with a melancholy tone
I heard that Negro sing, that old piano moan—
"Ain't got nobody in all this world,
Ain't got nobody but ma self.
I’s gwine to quit ma frownin'
And put ma troubles on the shelf."
What is the effect of repeating the phrase “piano moan” in the poem?
It sets a sad, mournful tone.
It adds a cheerful, melodic chord.
It adds an open, musical sound.
It sets an angry, discordant tone.
Mark this and return
The effect of repeating the phrase “piano moan” in the poem is A. It sets a sad, mournful tone.
What is tone?It should be noted that in literature, the feeling and emotions of the author is illustrated in the tone.
In this case, the repetition of the words were I
important to show the emotions of the author.
Therefore, the effect of repeating the phrase “piano moan” in the poem is that it sets a sad, mournful tone.
In conclusion, the correct option is A.
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9 is 10% of what number
Answer:
90
Step-by-step explanation:
You can find the answer by dividing 9 by .10
9 / .10 = 90
To check your answer, you can multiply 90 by .10
90 x .10 = 9
If 10 pounds of ice starts at ten degrees and is changed to steam at 400 degrees in twenty minutes, how many btuh are required? what size hvac unit would be needed?
As per latent heat, size of 11.61 BTUH is required to complete the whole action.
Let's assume the ice was at 32° F. So, 144 BTU/lb is required as latent heat. To melt ice and make it 32°F water required BTU is:
10 × 144 = 1440 BTU ( m× l = H where m is the mass and l is the latent heat )
To, convert 10°F ice to 32°F ice required heat is,
10×0.5035× ( 32° - 10°) = 110.77 BTU ( H = msΔt, m= mass, s = specific heat of ice, and Δ t = difference in temperature which is, 32° - 10° = 22°)
Now, to convert 32°F water to 212°F water required heat is:
10×1×180 = 1800 BTU ( SPECIFIC HEAT OF WATER IS 1 and Δt = 212-32 = 180°F )
To covert 212°F water to 212°F steam the required heat is,
10 × 970 = 9700
Now, to convert 212°F steam to 400°F steam, the required heat is ;
10 × .47 × 188 = 883.6 BTU ( The specific heat if steam is .47, Δt = 188°F )
Now total heat is, 883.6 BTU +9700 BTU + 1800 BTU + 110.77 BTU + 1440 BTU = 13934 BTU
Required power to convert it within 20 min. or 1200 sec is,
13934/1200 = 11.61 BTUH.
We can now say that, if 10 pounds of ice starts at ten degrees and is changed to steam at 400 degrees in twenty minutes, 11.61 BTUH is required.
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Mr. Sowers wants to purchase expo markers for his classroom. He has a budget of $35. A four pack of markers costs $5.49, including tax. Write and solve an inequality to solve for the number of packs of markers Mr. Sowers can purchase
The number of packs of markers Mr. Sowers can purchase is 6.4 packs.
The number of packs of markers Mr. Sowers can purchaseAccording to the task content, it is required that an inequality should be written and solved for the number of packs of markers Mr. Sowers can purchase.
Mr sower's budget = $35Cost of four pack of markers including tax = $5.49Number of packs of markers = x5.49x ≤ 35
divide both sides by 5.49x ≤ 35 / 5.49
x ≤ 6.375227686703096
Approximately
x ≤ 6.4
Therefore, the number of packs of markers Mr. Sowers can purchase is 6.4 packs
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If the area of the triangle is 12, what is the value of x?
Answer: x = 3
Step-by-step explanation:
From the diagram above , the area of a triangle especially a right angled triangle
A = 1/2 X b X h where b is the base and h is the height.
Now,
h = x + 3
b = x + 1
Now , substitute for those values in the formula provided vide
A = 1/2 x (x+ 3)( x + 1 ) and equated it to 12
= (x+3)(x+1)
—————. = 12
2
Now, multiply both side a by 2 to make it a linear equation or better put , cross multiply
= (x+3)(x+1) = 2 x 12
= (x+3)(x+1) = 24
Then open the bracket by multiplication
= x2 + x + 3x + 3 = 24
= x2 + 4x + 3 = 24
= x2 + 4x + 3 - 24 = 0
By solving this quadratically,
= x2 + 7x - 3x - 21 = 0 ,
( x2 + 7x) - ( 3x - 21 ) = 0
x( x + 7 ) - 3( x + 7 ) = 0
Therefore
( x+ 7 )( x - 3 ) = 0
Solving this gives
x = -7 or x = 3
Therefore x = 3 since x can’t be negative, x can’t be = -7
express the ratio 2:6 in 1:n
Answer:
n=3
Step-by-step explanation:
2:6=1:3
divide by 2 on both the 2 and the six and 2/2=1 and 6/2=3 so n=3
Answer:
1:3
Step-by-step explanation:
So, what you need to do is figure out the common factor of 2 and 6
which then the answer comes out to 3, so your answer would be 1:3 ratio.
Brainliest thx
Sam figures that he also earns about $2.50 in tips for each person he serves.
Sam works 4 hours on a particular day.
If n represents the number of people Sam serves that day, which of the
following functions could Sam use to figure E, his total earnings for the day?
An+ 10
Option c is the correct answer. Sam's total earning for the day is equal to
E(n) = 2.5n + 24
Given data
Sam earning per hour = $6
Sam earning on tips per person = $2.5
Sam's total hour per day =4
How to find the function for Sam's total earningsSam's daily earning excluding tips = Sam earning per hour * Sam's total hour per day
= $6 * 4 hours = $24
If n represents the number of people Sam serves that day, then Sam's earnings on tips in a day = $2.5 * n = $2.5n
The function for Sam's total earning is given by E(n)
E(n) = Sam's daily earning excluding tips + Sam's earnings on tips in a day
E(n) = $24 + $2.5n
this is re arranged as
E(n) = 2.5n + 24
Therefore we can say that Sam's total earning for the day is equal to
E(n) = 2.5n + 24
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Complete question
Sam is a waiter at a local restaurant where he earns wages of $6 per hour. Sam figures that he also earns about $2.50 in tips for each person he serves. Sam works 4 hours on a particular day. If n represents the number of people Sam serves that day, which of the following functions could Sam use to figure E, his total earnings for the day?
A. E(n) = 2.5n
B. E(n) = 4n + 10
C. E(n) = 2.5n + 24
The fish population in a certain lake rises and falls according to the formula F= 1000(30 + 17+ - 12) Here F is the number of fish at time t, where t is measured in years since January 1, 2002, when the fish population was first estimated. (a) On what date will the fish population again be the same as on January 1, 2002? (b) By what date will all the fish in the lake have died?
The fish population will be the same as on January 1, 2002 on January 1, 2017 and all the fish in the lake will have died by 2019
(a) On what date will the fish population again be the same as on January 1, 2002?The function is given as:
F(t) = 1000(30 + 15t - t^2)
Start by calculating F(0) --- population in 2002
So, we have:
F(0) = 1000(30 + 15(0) - 0^2)
F(0) = 30000
Substitute 30000 for F(t) in F(t) = 1000(30 + 15t - t^2)
1000(30 + 15t - t^2) = 30000
Divide by 1000
30 + 15t - t^2 = 30
Simplify
t^2 - 15t = 0
Divide through by t
t - 15 = 0
Solve
t = 15
This means that
Year = 2002 + 15
Year = 2017
Hence, the fish population will be the same as on January 1, 2002 on January 1, 2017
(b) By what date will all the fish in the lake have died?This means that F(t)= 0
So, we have:
1000(30 + 15t - t^2) = 0
Divide by 1000
30 + 15t - t^2 = 0
Rewrite as
t^2 - 15t - 30 = 0
Using a graphing calculator, we have
t = 17 (approximated)
This means that
Year = 2002 + 17
Year = 2019
Hence, all the fish in the lake will have died by 2019
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Find each measure if m ∠ D G F=53 and m∠ A G C=40 .
m ∠ 4
Answer:
a
Step-by-step explanation:
i ink
Write an equation of each line in standard form with integer coefficients.
a line with slope of 2/3 and y -intercept (0,5)
The equation of the line in standard form with slope equal to 2/3 and y -intercept (0 , 5) is 2x - 3y = -15.
The equation of a line can be expressed in three different forms: standard form, slope-intercept form, and point-slope form.
The standard form of an equation of a line is expressed as ax + by = c, where a and b, if all possible must be integers, are the coefficients of variable x and y, respectively, and c is a constant. Meanwhile, slope-intercept form is given by the formula y = mx + b, where m is the slope of the line and b is the y- intercept. On the other hand, given the slope m and a point on the line (x , y), we can express the equation in point-slope form, (y - y1) = m(x - x1).
Using the slope-intercept form, plug in the values of the slope and the point to set up the equation.
y = mx + b
where m = 2/3 and y-intercept, b = 5
y = 2/3 x + 5
To write the equation in standard form, arrange the variable(s) in one side and the constant(s) in the other.
y = 2/3 x + 5
2/3 x - y = -5
Multiply both sides by 3 to have integer coefficients.
3(2/3 x - y) = -5(3)
2x - 3y = -15
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The graph of function f is shown.
Function g is represented by the equation.
g(x) = 9(1/3)^x - 4
Which statement correctly compares the two functions?
OA. They have the same y-intercept but different end behavior.
OB. They have different y-intercepts but the same end behavior.
OC. They have different y-intercepts and different end behavior.
OD. They have the same y-intercept and the same end behavior.
Answer:
Step-by-step explanation:
B) is correct
Help me out please!!
Answer:
£41.20
Step-by-step explanation:
Pack of 10 x 8 = 80
(I got the 8 from 84)
80 divided by 2 = 40
then all you need are 4 pencils = 1.20
40 + 1.20 = 41.20
Hope this makes sense aha, if it doesn't just contact me :) xx
translate triangle P using the vector (2 -7)
The transformation rule for the triangle P by translating the vector (2, -7) is ( x , y ) <=> ( x + 2 , y - 7 )
Transformation rule says that, if a translation occurs then each point of the shape will be shifted in the same direction with the same distance.
The original figure and the translated figure will have the same shape and size.Also they both faces in same direction.This is called a direct geometry.According to the rule , the translation for the triangle P using the vector (2,-7) is ( x + 2 , y - 7 ).
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Use the Distance Formula to find the distance between the pair of points.
A(0,0), B(15,20)
Using the distance formula, the distance between the pair of points A(0,0) and B(15,20) is 25 units
Given,
The points = A(0,0) and B(15,20)
We know the distance formula = [tex]\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2} }[/tex]
Substitute the values in the equation
The distance = [tex]\sqrt{(15-0)^{2}-(20-0)^{2} }[/tex]
[tex]=\sqrt{15^{2}+20^{2} } \\=\sqrt{225+400}\\ =\sqrt{625}[/tex]
=25 units
Hence, using the distance formula, the distance between the pair of points A(0,0) and B(15,20) is 25 units.
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Find the measures of the sides of ΔX Y Z and classify
triangle by its sides.
X(-4,-2), Y(-3,7), Z(4,-2)
The measures of the sides of ΔXYZ are XY = 9.1, YZ = 11.4, XZ = 8. and the triangle XYZ must be an acute triangle
In this questions we have been given the the coordinates of the triangle XYZ.
X(-4, -2), Y(-3, 7), Z(4, -2)
We need to find the measures of the sides of ΔXYZ .
We find the the measures of the sides using distance formula.
XY = √[(7 + 2)² + (-3 + 4)²]
XY = √[9² + 1²]
XY = √(81 + 1)
XY = √(82)
XY = 9.1
Now side YZ
YZ = √[(-2 - 7)² + (4 + 3)²]
YZ = √[(-9)² + (7)²]
YZ = √81 + 49
YZ = √130
YZ = 11.4
And the length of side XZ would be,
XZ = √[(-2 + 2)² + (4 + 4)²]
XZ = √0 + 8²
XZ = 8
We find the sum of the squares of the two smaller sides, and compare the sum to the square of the largest side.
the sum of the squares of the two smaller sides is,
= 8² + 9.1²
= 64 + 82.81
= 146.81
= 12.12²
And 11.4² = 129.96
Since the sum of the squares of the two smaller sides is greater than the square of the largest side, the triangle must be an acute triangle.
Therefore, the measures of the sides of ΔXYZ are XY = 9.1, YZ = 11.4, XZ = 8. and the triangle XYZ must be an acute triangle
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Put the numbers in order from smallest to largest.
Answer:
3.24x10^-5, 5.48x10^-2, 1.2x10^1, 4.68x10^6, 8.34x10^6
Step-by-step explanation:
3.24 x 10^-5 = 0.0000324
5.48 x 10^-2 = 0.0548
1.2 x 10^1 = 12
4.68 x 10^6 = 4680000
8.34 x 10^6 = 8340000
A basketball player has a 0.603 probability of making a free throw. if the player shoots 28 free throws, what is the probability that she makes no more than 20 of them?
The probability that she makes no more than 20 of them is 0.394
We use Binomial Distribution in solving this question.
The discrete probability distribution known as the binomial distribution only offers two outcomes for an experiment: success or failure.
Sum of independent Bernoulli trials is binomial distribution; a random Variable x is said to be following binomial distribution if it's density is given as
P(X=x) = (nCx) px (1−p)n−x where x=0,1,2…n
Let x denotes the number of throws that makes a free throw so here
x follows Binomial distribution with n=28 and p=0.603
Thus, we calculate
P(X≤20) =∑_(k=0)^1▒1= (28Ck)0.603k (1−0.603)28−k =0.3144
=0.394
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Six times the sum of a number and negative one is the same as two more than eight times the number
Answer:-5/4
Step-by-step explanation:
Three bands are going to play in a concert. In how many different orders can the bands play
Answer:
6
Step-by-step explanation:
Let's call the bands by numbers :
So we have Band 1,2 and 3
The orders can be :
1,2,3
2,3,1
3,1,2
1,3,2
3,2,1
2,1,3
so there must be 6 different orders
Another method of doing this is to called product rule of counting :
3 × 2 × 1 = 6
Hope this helped and have a good day
