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Novay_Z [31]
3 years ago
12

A restaurant customer left ​$1.65 as a tip. The tax was 4 % and the tip was 15​% of the after tax cost. Which information is not

needed to compute the bill after tax and​ tip? What was the total​ bill?
Mathematics
1 answer:
Fed [463]3 years ago
8 0
You dont need the percentage of tip. to calculate the bill, divide 100 by 15, then multiply that number by 1.65, you will get the total of the bill afer tax. if you add 1.65 to the total you get the total after tax and tip
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The area (A) of a circle with a radius of r is given by the formula A=3.14r^2 and its diameter (d) is given by d=2r. Arrange the
wariber [46]

Answer:

D=2\sqrt{\frac{A}{3.14}}

Step-by-step explanation:

we know that

The area of a circle is

A=3.14r^{2} ----> equation A

The diameter of a circle is

D=2r ----> equation B

Solve for r in the equation A

That means ---> isolate the variable r

Divide by 3.14 both sides

\frac{A}{3.14}=r^{2}

take the square root both sides

\sqrt{\frac{A}{3.14}}=r

Rewrite

r=\sqrt{\frac{A}{3.14}}

Substitute the value of r in the equation B

D=2\sqrt{\frac{A}{3.14}}

4 0
3 years ago
Please hurry show your work please Solve using elimination (IXL Skill ZQV). Show all your work.
Colt1911 [192]

Answer:

x=5, y=-6, or (5, -6)

Step-by-step explanation:

Hi there!
We are given the following system of equations:
6x + 3y =12
-2x-5y=20

And we want to solve it by elimination, where we will add the equations together, clear one of the variables, solve for the other variable, and then use the value of the solved variable to find the value of the first variable, that was cleared earlier

Before we clear a variable, we want the values of the coefficients to have opposite signs; for example, if we wanted to clear x in these equations, we would want the coefficients of x in both equations to be 2 and -2, or 6 and -6

In order to get the coefficients to have opposite signs, we can multiply or divide the equations by any numbers to get to the desired coefficients

For this solution, let's clear x, but you can choose to clear y if you wish; right now, the coefficients of x are 6 and -2

If we divide both sides of the first equation by 3, the equation will become 2x + y = 4, which if we add that to -2x-5y=20, we'll clear x and only have y left

In that case, take 6x + 3y =12 and divide both sides by 3

6x+3y=12

÷3        ÷3

________

2x + y = 4

Now add 2x + y =4 with -2x - 5y = 20; notice how the 2x and the -2x cancel out:

2x + y = 4

-2x-5y=20
________
0x - 4y =24

-4y=24

Divide both sides by -4

y=-6
We now have the value of y
Now we need to find the value of x

We can substitute -6 as y into either one of the equations (6x + 3y = 12 OR -2x - 5y =20) to solve for x

Let's take 6x + 3y = 12 for example
Substitute -6 as y into the equation:
6x + 3(-6) = 12

Multiply

6x - 18 = 12

Add 18 to both sides

6x = 30
Divide both sides by 6

x=5

The solution is x=5, y=-6, or as a coordinate point, (5, -6)
Hope this helps!

Want to see another example of these types of problems? Try this question! brainly.com/question/24785499

3 0
2 years ago
If a=b=c find the value of each​
BARSIC [14]

Answer:

Since we are apparently having a straight line which is equal to 180° therefore a=60° b=60° and c=60°

6 0
3 years ago
Read 2 more answers
James jogged around the track 0.68 hours at an average speed 28.9 miles per hour how far did he jog?
Ilia_Sergeevich [38]

Answer:

Step-by-step explanation:

0.68hr(28.9mi/hr)=19.652mi

6 0
3 years ago
What is the area of the rectangle with the given dimensions? *
exis [7]

Given:

The dimensions of a rectangle are 2x-5 and 3x+3.

To find:

The expression that represents the area of the rectangle in simplest terms.

Solution:

Area of a rectangle is:

Area=Length\times Width

The dimensions of a rectangle are 2x-5 and 3x+3. So, the area of the given rectangle is:

Area=(2x-5)\times (3x+3)

Area=2x(3x)+2x(3)-5(3x)-5(3)

Area=6x^2+6x-15x-15

Area=6x^2-9x-15

Therefore, the correct option is F, i.e., 6x^2-9x-15.

4 0
3 years ago
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