MATHEMATICS HIGH SCHOOL

Lydia was out at a restaurant for dinner when the bill came. Her dinner came to $30. After adding in a tip, before tax, she paid $34.50. Find the percent tip.

Answers

Answer 1
Answer:

Answer:

15%

Step-by-step explanation:
Answer 2
Answer:

Answer:

is 16.75

Step-by-step explanation:

Related Questions

Form a polynomial f(x) with real coefficients having the given degree and zeros. a) f(x) = x^3 - 5x^2 + x + 5 b) f(x) = x^3 - 5x^2 + x - 5 c) f(x) = x^3 + 5x + x - 5 d) f(x) = x + 5x^2 - x + 5
The area of a football field can be calculatedby multiplying the length and width of the field. (that is, A= LxW ) Find the area of a regulation football field in feet, given that the length of the field is 360 feet (120 yards) and the width is 160 feet (53 1/3 yards).
Solve 4(x + 1) = 4x + 4.
Which expression gives the surface area of a sphere with radius r?A. r2 B. 4r3 C. 4r2 D. 4r2
Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2 and the profit on every wrap is $3. Sal made a profit of $1,470 from lunch specials last month. The equation 2x + 3y = 1,470 represents Sal's profits last month, where x is the number of sandwich lunch specials sold and y is the number of wrap lunch specials sold.

For the following 9 scores ---1, 2, 13, 5, 4, 7, 9, 2, 2 what is the mean?

Answers

Answer:

mean = 5

Step-by-step explanation:

the mean is calculated as

mean = (sum)/(count) = (1+2+13+5+4+7+9+2+2)/(9) = (45)/(9) = 5

Convert 4 years to months​

Answers

Answer:

48 months

Step-by-step explanation:

12 times 4 48

Answer:

48 months

There's 12 months in 1 year.

So we would multiply 12 months by 4 years to get 48 months

Complete the equation of the graphed linear function in point-slope form.y – (–2) = ___(x – ___)

Answers

m = (y_(2) - y_(1))/(x_(2) - x_(1)) = (2 - (-2))/(2 - 1) = (2 + 2)/(1) = (4)/(1) = 4

y - y₁ = m(x - x₁)
y - (-2) = 4(x - 1)
   y + 2 = 4(x - 1)
   y + 2 = 4(x) - 4(1)
   y + 2 = 4x - 4
       - 2         - 2
          y = 4x - 6

What is the value of k for the inverse variation
function?
k=
DONE

Answers

Answer:

19,800

Step-by-step explanation:

Answer:

k=19800

k represents the number of gallons of water needed to fill the pool

third is y=19800/x

Step-by-step explanation:

If point (a,b) lies on the graph y=f(x), the graph of f^-1 (x) must contain point:

Answers

By the definition of inverse function,the point (a,b) lies on the graph \bold{y= f(x).} So, (b,a) must be lies on the graph of \bold{y=f^(-1) (x)}.

Given:

Point (a,b) lies on the graph y= f(x).

Find:

The graph of  \bold{y=f^(-1) (x)} must contain that point.

As per the definition of inverse function, if two one-to-one functions f(x) and g(x). If (f∘g)(x)=x and (g∘f)(x)=x. Then, we say that f(x) and g(x) are inverses of each other.

\bold{f=\{ (x,y):x\epsilon R,y\epsilon R\}}

Then, its inverse is defined as

\bold{f^(-1) =\{ (y,x):x\epsilon R,y\epsilon R\}}

Therefore, we have to interchange x and y-coordinate of the points which lies on the function f to get f⁻¹.

Thus, the point (a,b) lies on the graph y= f(x). So, (b,a) must be lies on the graph of y=f^(-1) (x).

For more details, prefer this link :

brainly.com/question/10300045

Given:

Point (a,b) lies on the graph y=f(x).

To find:

The point which is must be lies on the graph of y=f^(-1)(x).

Solution:

According to the definition of an inverse function, if a function is defined as

f=\{(x,y):x\in R,y\in R\}

then, its inverse is defined as

f^(-1)=\{(y,x):x\in R,y\in R\}

It means, we have to interchange x and y-coordinate of the points which lies on the function f to get f⁻¹.

We have a point (a,b) lies on the graph y=f(x). So, (b,a) must be lies on the graph of y=f^(-1)(x).

Therefore, the correct option is (1).

Mai wants to make a scale drawing of her kitchen. Her kitchen is a rectangle with length 6 m and width 2 m. She decides on a scale of 1 to 40.Draw and label the dimension of a scale drawing of Mai’s kitchen, using a scale of 1 to 40.

Answers

Answer:

Step-by-step explanation:

This is an easy problem to work out, but a little hard to explain with just words and not a drawing.

Do you understand "scale"?  As in a "map scale"?  So many inches equals one mile or one kilometer?

If you were to draw this kitchen at "full scale" you'd need a really big piece of paper, right?  6m by 2m at least.

But that's not very helpful, so you "scale" it down.  What if you divided each measurement by 2?  Then your piece of paper would 'only' need to be 3m by 1m.  Still too big though, right?

So cut each measurement in half again, and you're down to 1.5m by 0.5m.  Getting better.  What we just did there is a "scale of 1 to 4," often written as 1:4.  (Cutting in half twice is 1/4th, or 1:4.)

But the problem specifies 1:40, so simply divide by 10 now, and you no longer need a piece of paper 1.5m x 0.5m, but only 0.15m (15cm) by 0.05m (5cm).

So on a piece of paper and draw a line 15cm long.  That's the scaled graphical representation of the long side of Mai's kitchen.  6m in the real world is 600cm.  Divide that by the "scaling factor" of 40 to get 15cm that you draw on your paper.

The other side of her rectangular kitchen scales down to 5cm.  (200cm/40).  So add that as the short leg, then complete the other two sides of the rectangle.

When they say to scale something down, simply divide all the dimensions by the scaling factor.

(If you were to scale up, you'd multiply by the scaling factor.)
Other Questions
Change 43% into a decimal number
What two numbers add to equal -11 and multiply to equal 28?What two numbers add to equal -20 and multiply to equal 51?What two numbers add to equal -5 and multiply to equal -36?
What is the approximate area of the shaded sector in the circle shown below? A) 26.5 cm^2 B) 11.78 cm^2 C) 5.89 cm^2 D) 53.0 cm^2
shari has 1 1/2 gallons of orange juice. She wants to serve the orange juice equally among her 12 friends. How many ounces of juice will each friend receive