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rosijanka [135]
3 years ago
11

I'm calculaing tip and tax on a total cost. Do I need to add th tax to the total, then calculate tip, or calcualte tip on the or

iginal cost?
Mathematics
1 answer:
Usimov [2.4K]3 years ago
4 0
You would need to calculate the original cost with the tax then find the tip because the tip is always a percent out of the total cost including tax
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Answer this question! i am having some trouble in khan..
anzhelika [568]
The correct answer is 33 days
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2 years ago
Please Help!
RUDIKE [14]

Answer:

1. this is the definition of a midpoint - bc the definition of a midpoint is: “If a point is a midpoint of a segment, then it divides that segment into two congruent parts” or “If a point divides a segment into two congruent parts, then it's the midpoint of that segment.”

2. this is the division property of equality -"The division property of equality states that when we divide both sides of an equation by the same non-zero number, the two sides remain equal". so, in this situation we want to isolate x which means dividing both sides by 20. This will keep both sides equal just more simplified  ( before, it was 20 and 100, after dividing both sides by 20 it is 1 and 5 which is the same ratio therefore they are still equal)

3. this one's the subtraction property of equality- this property means you can subtract the same number from both sides of an equation and get an equivalent equation. in this situation, they subtracted 15 from both sides to get AB = 30 and it ends being still being equal to AB + 15= 45.

4. this is the symmetric property of equality -  "This property states that if a = b, then b = a. That is, we can interchange the sides of an equation, and the equation is still a true statement." "it states that values are still equal no matter which side of the equal sign they're on." That's why its possible for XY=ST and ST=XY

5. this is definition of congruence - which basically states that if a value of one thing is equal to the value of another thing those two things can be called congruent.

6. this is substitution property- this is the property that allows you to substitute one value for another in an equation. the property states  that if  

x = y, then x can be substituted in for y in any equation, and y can be substituted for x in any equation, just like what they show here with 5AB substituting for CD in the equation.

i hope this helped!   im not that good at explaining so if u have more questions lmk!          

3 0
3 years ago
Can you help me to solve this problem
storchak [24]

Answer:

I want to show you how to do this as well, the formula you are working with is a^2+b^2=c^2

Step-by-step explanation:

1.) 8^2+b^2=12^2

64+b^2=144

subtract 64 from both sides

b^2=80

take the square root of 80 and you get

b= 8.9

if you need more help on this let me know, I am going to list the other answers now because to do it all and show work on here is a lot of typing, all of which I will do if you do not understand the first example. Also the c value can ONLY BE THE HYPOTENUSE VALUE. The hypotenuse is the longest side of the triangle. For example, 12 would be the C value on number one and in number two it would be 15.

2.) 14.5

3.) 10.3

4.) 18.8

5.) 8

6.) 15

6 0
3 years ago
Evaluate 5/8-(1/4)2=
ValentinkaMS [17]

Answer:

0.125

Step-by-step explanation:

(5 divided by 8) - ((1 divided by 4) x 2) = 0.125

3 0
3 years ago
Read 2 more answers
The sum of two numbers is -316. One number is 94 less than the other. Find the numbers.
Oksanka [162]

Answer:

-94+-316=-410

-410+94=-316

Step-by-step explanation:


5 0
3 years ago
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