Answer: The estimated 15% tip would be $4.50.
Step-by-step explanation: Basically, first you will need to round the bill amount, $31.51 to the nearest ten dollars. 31.51 rounded to the nearest ten dollars is $30. Next, you will need to find the estimated tip amount. To do this multiply $30 by the tip 15%. Before you can find the tip amount, you will need to covert 15% to a decimal. To convert 15% to a decimal, divide 15 by 100 to get 0.15. Now, you can multiply 30 by 0.15 to get 4.50. So, $4.50 would be the tip if $31.51 was rounded to the nearest ten dollars.
explain how you find it
Answer:
x = 39
Step-by-step explanation:
there is a theorem that states that the midsegment in a trapezoid is equal to the sum of the bases divided by two
so, (36 + 42)/2 = x
36 + 42 = 78
78/2 = 39
The pythagorean theorem
Answer:
In mathematics, the Pythagorean theorem, also known as Pythagoras' theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle. It states that the area of the square whose side is the hypotenuse (the side opposite the right angle) is equal to the sum of the areas of the squares on the other two sides. This theorem can be written as an equation relating the lengths of the sides a, b and c, often called the "Pythagorean equation": a²+b²=c², where c represents the length of the hypotenuse and a and b the lengths of the triangle's other two sides.
Step-by-step explanation:
Answer:
In mathematics, the Pythagorean theorem, also known as Pythagoras' theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle. It states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides.
Step-by-step explanation:
(happy to help)
Twelve friends share 4 pizzas equally. What fraction of a pizza does each friend get?
Answer:
1/3
Step-by-step explanation:
4/12=1/3
What is the volume of the cylinder with a diameter of 5 inches and a height of 8 inches? Nearest hundredth
Answer:
V= 307.72 cubic inches
Step-by-step explanation:
Cylinder Formula- Pi x Radius squared x the height. Multiply this and you get 307.72 cubic inches.
The area of this parallelogram is 120 mm. Find the value of x.
so the right answer is 12mm.
Look at the attached picture
Hope it will help u...
Answer:
x = 12
Step-by-step explanation:
Area is l * w
l is 10, w is x
120 = 10 * x
divide by 10
12 = x
x = 12
Can someone please answer part A and B for me plz
Answer:
A. 25 miles per gallon
B. 225 miles
Step-by-step explanation:
Part A is asking for an average - how many miles does the car get out of each gallon. This can be found by dividing the total change in miles by the total change in gallons.
In this case, the changes in each are:
250 miles
10 gallons
250/10 is 25. Thus there are 25 miles per gallon.
Part B is asking for how much can you get with 9 gallons, meaning how many miles corresponds to 9 on the graph. The graph is at 225 miles at the x=9 mark, and thus the answer for part be is 225.
The equation for 17 + 51 = 68 verify goldbach's conjecture for the number 68
Answer:
the equation is addition so its 68
Step-by-step explanation:
HELP ME PLEASE
What equation can you use to find the value of x?
2x + 3x + 50 = 360
2x + 3x + 50 = 180
2x + 3x = 50
Answer:
I know I am late to answer but here is the right answer
X=26
Step-by-step explanation:
since 2x and 3x are on the same side of the equation you can combine the to get 5x+50=180. Then you subtract 50 from both sides of the equation witch you would get 5x on one side of the equation and 130 on the other. The you would divide 5x from both sides. 5x and 5 cancel out so you are left with 130 divide by 5x. You the divide which gives you the answer of X=26.
Mr. Price flew 4,908 miles from New York to Hawaii. He then flew 3,525 miles from
Hawaii to Texas. How much farther was Mr. Price's trip from New York to Hawaii than
his trip from Hawaii to Texas?
The difference between the distances from New York to Hawaii than his trip from Hawaii to Texas is 1383 miles.
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.
Given, Mr. Price flew 4,908 miles from New York to Hawaii. He then flew 3,525 miles from Hawaii to Texas.
Therefore, The difference between the distances from New York to Hawaii than his trip from Hawaii to Texas is,
= (4908 - 3525) miles.
= 1383 miles.
learn more about numerical expressions here :
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Mr. Price's trip from New York to Hawaii was 1,383 miles longer than his trip from Hawaii to Texas.
Calculating the Distance Difference :
To find out how much farther Mr. Price's trip from New York to Hawaii was compared to his trip from Hawaii to Texas, we need to subtract the distance from Hawaii to Texas from the distance from New York to Hawaii.
Distance from New York to Hawaii: 4,908 milesDistance from Hawaii to Texas: 3,525 milesNow, let's subtract the two distances:
4,908 miles - 3,525 miles = 1,383 miles
Therefore, Mr. Price's trip from New York to Hawaii was 1,383 miles longer than his trip from Hawaii to Texas.
It costs $7.00 to purchase a
pair of goggles. then marks
the goggles up by 75%. How
much does Sam charge for a pair
of goggles ?
Answer:
12.25 U.S. dollars
Step-by-step explanation:
Answer:
$12.25
Step-by-step explanation:
We can solve this by first finding 75% of $7. To do this, we can do $7.00 x 0.75. The product of those is 5.25. Knowing that $5.25 is 75% of $7, we are able to add up $7 and $5.25, which gives us $12.25.
Hope this helped!
Please Help me. Will name brainliest
Answer:
least = 315 grams
great = 324 grams
Step-by-step explanation:
31.5 grams nearest gram is 32 grams
so 31.5 x 10 packets is 315 grams
also, 32.4 grams nearest gram is 32 grams
so 32.4 x 10 packets is 324 grams
hope it helps :D
Answer:
The least and the greatest weights are 315 grams and 325 grams
Step-by-step explanation:
Good luck!
a solution of a system of linear equations
x - y = 5
- 3 x + y = - 1
Answer:
one solution : (-2 ; -7)
Step-by-step explanation:
hello :
x - y = 5 ....(*)
- 3 x + y = - 1 ....(**)
by (*) : y=x-5
by(**) : y = 3x-1
3x-1 = x -5
3x-x=-5+1
2x= -4
x= -2
but : y = x-5 so : y= -2-5=-7
one solution : (-2 ; -7)
What is the value of the discriminant of the quadratic equation -2x^2=-8x+8, and what does its value mean about the
number of real number solutions the equation has?
Answer:
B: The discriminant is equal to zero which means it has one real number solution
Step-by-step explanation:
Answer:
b
on edge 100%
Step-by-step explanation:
Which equation results from adding the equations in this system?
Negative 6 x + 4 y = negative 8. 6 x minus 12 y = 14.
(A) Negative 16 y = 6
(B) Negative 8 y = 6
(C) Negative 8 y = negative 22
(D) Negative 16 y = negative 22
Answer: Negative 8y = 6
Step-by-step explanation:
[tex]-6x+4y = -8\\6x-12y = 14[/tex]
--------------------------
[tex]- 8y = 6[/tex]
Answer:
B
Step-by-step explanation:
just did test
Is line AB tangent to the circle ?
Answer:
Yes
Step-by-step explanation:
A tangent has one point touching the circle and is always perpendicular to the radius drawn in as well. Therefore line AB is tangent to the circle and creates a right triangle.
Suive the equation.
3(k - 6) = 15
Answer:
k=11
Step-by-step explanation:
3(k - 6) = 15
Divide each side by 3
3/3(k - 6) = 15/3
k - 6 = 5
Add 6 to each side
k-6+6 = 5+6
k = 11
Answer:
k=11
Step-by-step explanation:
3(k-6) = 15
k-6 = 15/3
k-6=5
k=5+6
k=11
Solve each system of equations by substitution.
2x + 2y = 3 x - 4y = -1
Step-by-step explanation:
2x + 2y = 3 ( x2 for everything in the equation)
x - 4y = -1
4x+ 4y = 6
x - 4y = -1
Add the 1st line to the 2nd line to get rid of the y:
5x = 5
x - 4y = -1 ( you can pick any line from this system to be the second equation in this step, you can put 2x + 2y = 3 or 4x+ 4y = 6, anything above this step, but to make it simple chose the one you think is the easiest)
Solve for x, then plug the x value into the 2nd equation
x = 1
1 - 4y = -1
x = 1
-4y = -2 =) y = 1/2
x = 1
y= 1/2
Use the relationships between the angles to solve for x
x = _____ degrees
Answer:
x = 100
Step-by-step explanation:
Answer:
x = 100
Step-by-step explanation:
The sum of the opposite interior angles of a triangle is equal to the exterior angle
x+15 = 115
Subtract 15 from each side
x+15-15 = 115-15
x = 100
An electric powered fan has a 9 inch diameter blade that
rotates at 4000 revolutions per minute.
Find the angular speed of the sword in radians per minute.
_____/-\radians/minute
The speed of the fan is 1884 inches per second.
Step-by-step explanation:
Revolution per minute= 4000
Radius = 4.5 inches
Circumference= 2π r
= 2(3.14) (4.5)
= 28.26 inches
1 revolution= 28.26 inches
4000 revolution= (28.26) (4000)
=113040 inches per minute
= 113040/60
= 1884 inches per second
The speed of the fan is 1884 inches per second.
Final answer:
To find the angular speed of a fan blade given its revolution per minute, multiply the revolutions per minute by 2π to get the angular speed in radians per minute.
Explanation:
An electric powered fan has a 9-inch diameter blade rotating at 4000 revolutions per minute. To find the angular speed in radians per minute, we can use the formula: Angular speed (in rad/min) = (revolutions per minute) x 2π. Therefore, angular speed = 4000 x 2 x π = 8000π rad/min. So, the angular speed of the fan blade is 8000π radians per minute.
Please answer I will mark branlest if you are right and I won't you all to be safe
Love you all
Answer:
3. x=21
4. x=28
5. x=35
Step-by-step explanation:
I did ths step by step on my whiteboard and I know my answers are right. Sorry if that sounds cocky.
Can I get brainliest?
What is the relationship between genes and chromosomes?
Genes contain one or more chromosomes.
Chromosomes use DNA code to manufacture genes.
Genes use DNA code to manufacture proteins for chromosomes.
Chromosomes contain one or more genes.
Answer:
D. Chromosomes contain one or more genes (really, they contain thousands.)
Step-by-step explanation:
The definition of a chromosome is a segment of DNA that contains a certain gene, which then codes for a protein.
Why not A: Chromosomes contain genes.Why not B: Genes contain the code to manufacture proteins. Chromosomes don't manufacture genes.Why not C: Genes do use DNA to code for proteins, but not "for chromosomes." Chromosomes are basically the pieces of DNA that contain genes, which code for specific functions in the body and specific proteins.Answer:
D. chromosomes contain one or more genes.
Step-by-step explanation:
ik im like a year late and ur prolly done with the quiz by noowww but this is for other ppl who need it
Let y = safe load in pounds and x = depth in inches for a certain type of rectangular horizontal beam. A constant of
proportionality exists such that y = kx2.
Determine the constant k for a beam with y = 1,000 pounds and x = 5 inches.
What is a safe load if the depth of the beam is 10 inches?
800 pounds
4,000 pounds
10,000 pounds
I believe that it’s 4000
Answer: 40
Step-by-step explanation: I got it right :)
Please Help! If (3x+5)^2=ax^2+bx+c, what is the value of a+b+c?
Answer:
64
Step-by-step explanation:
You open up the (3x+5)^2 and get:
9x^2 + 30x + 25
So...
a+b+c = 64
OR
You add the coefficient(s) and the constant together in the parentheses and get:
(3x+5)^2 --> (8)^2
So you square the 8 and get:
64
Jameson Used 42% of the
money on a gift card to
purchase groceries. If he spent
$67.20 on groceries, how much
was on the gift card to begin
with?
$160 because if you do 42% of $160, it is $67.20
Is this right? Please help
Answer:
The answer is correct
which is the answer
help pleas
Write an algebraic expression for the number of hours in m minutes
Answer:
m/60.
Step-by-step explanation:
There are 60 minutes in an hour so the expression is m/60 hours..
The algebraic expression for the number of hours in m minutes is m/60. This is because there are 60 minutes in an hour, so dividing the number of minutes by 60 gives the equivalent number of hours.
Explanation:The task is to write an algebraic expression that represents the number of hours in m minutes. Since 1 hour is equal to 60 minutes, we can set up a conversion factor that allows us to go from minutes to hours. To find the number of hours in m minutes, we divide the number of minutes by 60 (the number of minutes in an hour). So, the algebraic expression for the number of hours in m minutes would be m/60.
To further simplify the context, think of a situation where you might need to convert 120 minutes to hours. Using the algebraic expression described, you would divide 120 by 60, which would result in 2. Therefore, 120 minutes is equal to 2 hours.
Learn more about Algebraic Expressions here:https://brainly.com/question/953809
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Since all circles are similar, a proportion can be set up using the circumference and diameter of each circle. Substitute the values d1 = 1, C1 = π, and d2 = 2r into the proportion.
StartFraction C 1 Over d 1 EndFraction = StartFraction C 2 Over d 2 EndFraction
Which shows how to correctly solve for C2, the circumference of any circle with radius r?
A. Because StartFraction pi Over 1 EndFraction = StartFraction C 2 Over 2 r EndFraction , C 2 = 2 r pi
B. Because StartFraction 1 Over pi EndFraction = StartFraction C 2 Over 2 r EndFraction ,
2 = StartFraction 2 r Over pi EndFraction
C. Because StartFraction pi Over 2 r EndFraction = StartFraction C 2 Over 1 EndFraction , C 2 = StartFraction pi Over 2 r EndFraction
D. Because StartFraction pi Over 1 EndFraction = StartFraction C 2 Over 4 r EndFraction , C 2 = 4 r pi
Answer: A
Step-by-step explanation:I got it right
Answer:
The answer is A on Edge 2020
Step-by-step explanation:
I did the Quiz
What is the correct answer?
A soccer team won 14 games and lost 5 games. Find the ratio of wins to total games played.
Add to find how many games the soccer team played.
14 + 5 = 19
Put this into a ratio of wins to games played.
14:19
Best of Luck!
Answer:
The ratio of wins to total games is 14:19
Step-by-step explanation:
The ratio of wins to total games played.
The number of wins is 14.
The total number of games is 14+5 = 19.
The ratio of wins to total games is 14:19