What percentage did you tip if your lunch was $5 and you left $1

Answers

Answer 1

Answer: well 20% of $5 is $1 so u paid a 20% tip

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Please give an accurate answer and show work.
Please answerrrr, its not that hard i dont think lol, i j dont know it :)
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Jan's Age is 3 years less than twice Tritts age. The sum of their ages is 30. Find their ages.

Answers

Their ages are jan's age = 19 and tritts age be 11 yaers

What is Algebra?

Algebra is a branch of mathematics that deals with symbols and the arithmetic operations across these symbols. These symbols do not have any fixed values and are called variables. In our real-life problems, we often see certain values that keep on changing. But there is a constant need to represent these changing values.

Given:

Jan's Age is 3 years less than twice Tritts age.

sum of their ages is 30.

let tritts age be x

jan age= 2x -3

Now, sum of their ages = 30

x+ 2x-3 = 30

3x= 33

x=11

hence, jan's age = 19 and tritts age be 11 yaers

Learn more about algebra here:

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2x-3+x=30
3x-3=30
3x=33
Tritts age=x=11
Jans age=2x-3=2(11)-3=22-3=19

Tritt=11
Jan=19

Mandy is trying to subtract 7 − 12, and she has asked you for help. How would you explain the process of solving the problem to Mandy, using a number line?

Answers

Answer:

Answer in explanation

Step-by-step explanation:

We can use a number line to explain this subtraction.

The first thing to do is to locate the number 7 on the number line. This should be located to the right of the number line.

Then, since we are subtracting, we need to count left from the position of interest. So we will count 12 integers to the left of 7.

If things are right, we would land at -5

If it was a case of addition, we will need to keep counting right from the position of origin

Answer:

-5 am sorry Dear I ca'nt sed a pic , I didn't see the option

Which of the following statements is INCORRECT?A. A triangle with three congruent sides is equiangular.
B. The Isosceles Triangle Theorem can be applied to equilateral triangles.
C. The measure of each angle of an equilateral triangle is 120°.
D. A triangle with three congruent angles is equilateral.

Answers

Answer:

Step-by-step explanation:

The measure of each angle in an equilateral triangle is $60^(\circ)$ , not $120^(\circ)$ .

Find the circumference of a circle with radius r=16.5m.give your answer in terms of pi

Answers

Answer:

$33\pi \: m$

Solution,

Radius=16.5cm

Circumferenceofcircle:

$2\pi \: r \n = 2 * \pi * 16.5 \n = 33\pi \: m$

hopethishelps..

Goodluck on your assignment..

Answer:

33π

Step-by-step explanation:

The circumference of a circle as 2πr, meaning that with a radius of 16.5m, the circumference would be 2*16.5*π, or 33π.

the soccer team collected $800 at a car wash fundraiser. They charged $5.00 for small vehicles and $10.00 for larger vehicles. The amount collected can be modeled by the equation 5x + 10y = 800, where x represents the number of small vehicles and y represents the number of larger vehicles. If the number of larger vehicles washed was 50, how many small vehicles were washed in total?

Answers

5x+10y = 800
replace y by 50: 5x+10(50) = 800
5x+500 = 800
5x = 800-500
5x = 300
x = 300/5
x = 60
60 small vehicles were washed in total.

proof: 5x+10y = 800
replace x=60 and y=50
so; 5(60) +10(50) =800
300 + 500 = 800
800 = 800

Answer:

60 in total

Step-by-step explanation:

proof: 5x+10y = 800

replace x=60 and y=50

so; 5(60) +10(50) =800

300 + 500 = 800

800 = 800

A and B start from the same point and travel west and north, respectively. A travels 3 miles per hour faster than B. At the end of two hours, they are 30 miles apart. Find their distances.

Answers

Answer:

Step-by-step explanation:

I believe you're actually looking for their respective rates. If A travels directly west and B travels directly north, and the distance between them is 30 miles, what we have is a right triangle situation. The hypotenuse of the triangle is 30. If the distance an object travels at a certain rate for given time is d = rt, then for B, our formula for distance is d = 2r (since the time each traveled is 2 hours). A traveled 3 miles per hour faster, so the formula for distance for A is d = (r + 3)2. Again, each traveled for 2 hours, so t = 2. Distributing we get that d = 2r + 6. Now that we have each expression for A and B, we use them in Pythagorean's Theorem to find the only unknown we have which is r. That's why I said in the beginning that I believe what you're actually looking for is the rate that each traveled. Our equation is:

$30^2=(2r+6)^2+(2r)^2$ and

$900=4r^2+24r+36+4r^2$ and

$900=8r^2+24r+36$

Putting everything on one side and setting the quadratic equal to 0 to factor, we get

$8r^2+24r-864=0$

You can factor out an 8 to make the numbers a bit smaller:

$8(r^2+3r-108)=0$

Factor to get

8(r - 9)(r + 12)=0

That means, by the Zero Product Property, that 8 = 0, r - 9 = 0, or r + 12 = 0. We all know that 8 doesn't = 0, so forget that one!! If r - 9 = 0, then r = 9. If r + 12 = 0. then r = -12. We all know that rate cannot be negative (velocity can, but we are not using vector math here), so we discount rate as -12. That means that r = 9. B's rate is 9 then and A's rate is 12. There you go!

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