Mathematics High School

The Smith family went out to dinner and received great service. They decided to
leave a 20% tip for their waitress. If their dinner bil totaled $90, how much was the
tip? Think You need to find what percent of what number? Show your work

Answers

Answer 1

Answer:

$75

Step-by-step explanation:

90=1.2x

90/1.2=x

75=x

Answer 2

Answer:

$75 :D

Step-by-step explanation:

90=1.2x 90/1.2=x 75=x

Related Questions

A beach ball has a diameter of 10 inches. What is the volume of air contained inside the beach ball? Use 3.14 for pi. Round your answer to the nearest hundredth.

Answers

Answer:

31.4

Step-by-step explanation:

Answer:

523.33 cubic inches

Step-by-step explanation:

There are 3 girls and 4 boys taking music lessons. Write the ratio that compares the number of boys taking music lessons to the total number of students taking music lessons.

Answers

Answer:

4:7

Step-by-step explanation:

Answer:

4 boys and 7 students in total

Step-by-step explanation:

so 4:7

Salma received a $90 gift card for a coffee store. She used it in buying some coffee that cost $8.33 per pound. After buying the coffee, she had $56.68 left on her card. How many pounds of coffee did she buy?

Answers

Answer:

4 Pounds.

Step-by-step explanation:

90 - 56.68 = 33.32

33.32 / 8.33 = 4

?????????????????????

Answers

Answer:

The equation is c = 250m

Cost of a 14-month is 3,500

Step-by-step explanation:

Each month, the value increase by 250

c = 250m

c = 250 x 14

c = 3,500

Answer:

The equation is (x=250)

A 14 month membership is 3500

Step-by-step explanation:

HELPPPP ITS VERY URGENT !!!!

Answers

Answer:

64

Step-by-step explanation:

(-19/3) divided by (5/3) = 19/5

So, I found the answer to this problem in my answer key, but I’m not sure HOW this answer came to be.

Please explain ASAP, so that I can do these problems without my answer key from now on!!

Answers

Answer:

Keep Change Flip

Step-by-step explanation:

-19/3 divide by 5/3

keep -19/3

change the sign to multiplication

flipe 5/3 to 3/5

-19/3 times 3/5

how many natural numbers N have the property among 1,2,..........,N exactly 30% are divisible by 3?
A. 0
B. 2
C. 6
D. infinite

Answers

Answer:

The answer is B. 2.

Step-by-step explanation:

We know that for N = 1 and N = 2, none of them are divisible by 3.

For N = 3, 33.33% are divisible by 3.  For N = 4, 25% (which is already less than 30%), so N = 5 would also be less.

At N = 6, we're back up to 33.33%.  N = 7 is already less than 30%.

At N = 9, you guessed it, 33.33%.  N = 10 is 30% (3, 6, and 9).  So we have one case.

Moving along, at N = 18, 33.33%.  N = 20 is again 30% (3, 6, 9, 12, 15, and 18).  Two cases now.

Finally, at N = 21, again 33.33%.  N = 22 and N = 23 are both greater than 30%.  As we continue this, for any N after 20, we will always be greater than 30%.

-6x - 2y = 8
Y = 5x + 4
a. (1,-1)
b. (0,4)
c. (-1, 1)
d. (-1,-1)

Answers

Answer:

D

Step-by-step explanation:

Find the value of x.
a. 96
b. 84
c. 276
d. 264

Answers

Answer:

The answer is a. 96

Step-by-step explanation:

53+31+x=180

84+x=180

(84-84)+x=180-84

x = 96

Identify the type of angles and find x. Line j // line k



Please help me with this

Answers

Answer:

I know you asked for help 2 WEEKS ago... but I just took the test today on Schoology (12.1.2020) but the Angle Pair: Same Side Interior || Equation: 2x + 7x -9 = 180 || x = 21

Step-by-step explanation:

I wanted to answer this because someone (anyone) out there can be looking up the answer JUST like I did and will be leaded to THIS answer...

God Bless

What shape is this help

Answers

Answer:

Cylinder

Step-by-step explanation:

The graph of six different polar equations are shown.
Use the drop-down boxes to match each equation with its polar graph.

Answers

To match each equation with its polar graph would result to the given answers:

The equation [tex]r=-2[/tex] represents graph CThe equation [tex]r=3[/tex] represents graph BThe third equation represents graph DThe fourth equation represents graph E

What is polar equation?

Polar equation is any equation that describes a relation r r r[tex]r[/tex] and thetaθ. These equations are made up of coordinates.

Read more about polar equations here:

https://brainly.com/question/9363127

Lin can run 12 laps around the track in 15 minutes. If she is running at the same rate for 20 miles, how long will it take her?

Please help

Answers

Answer:

Assuming 4 laps=1 mile, a standard track, then for every 5 minutes she runs a mile. 20 miles time 5 minutes each equals 100 minutes, or 1 hour and 40 minutes

what is -5y+32=-18

10 points :)

​

Answers

Answer:

y=10

Step-by-step explanation:

-5y+32=-18

-5y+50=0

-5y=-50

-y=-10

y=10

What is the hypothesis and conclusion of the following statement?

"If a polygon is a pentagon, then it has five sides."

Hypothesis:

Conclusion:

Answers

Answer:

hypothesis-a polygon js a pentagon conclusion-it has five sides

4 5/9 + 2 5/6 + 1 2/3


ANSWER ASAPPPPP

Answers

Answer:

9.05

Step-by-step explanation:

Answer:

9 1/18

Step-by-step explanation:

1. 4 5/9 + 2 5/6 + 1 2/3

2. (4+2+1) + (5/9+5/6+2/3)

3. 7+37/18

4. 7+2+1/18

5. 7+2+1/18

6. 9+  1/18

Answer = 9 1/18

f(t)=100−4.9t2 help me

Answers

-19.6 m/s
Do you need the math as well?

ILL MARK U BRAINLIEST!!

Answers

Answer:

The answers are A, C, D, and E.

Step-by-step explanation:

I just multiplied 45 by how many hours and if the answer was the miles it was correct.

I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!

The correct answer would be choice A

Please like this post

please helppppppp.
5
15
32
40

Answers

Answer:

just use the 10's btw

Step-by-step explanation:

Answer:

I think it's 15 sorry if im wrong

Step-by-step explanation:

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHHHHHHHH

What is $4/$0.56 ?

Answers

Like0.123444783673
Or something


A cyclist rode 3.75 miles in 0.5 hours. How fast was she going in miles per hour?

1.875 miles per hour
3.75 miles per hour
7.5 miles per hour
14 miles per hour

Answers

Answer:

7.5 miles per hour

Step-by-step explanation:

3.75/.5 = 7.5 miles per hour

what is the value of x in this equation
3(2x + 8) =0?
a.-8
b.-4
c.4
d.8
what is the value of A in this equation 4a + 3(a + 1) = 24
a.2
b.3
c.7
d.21

Answers

The the first one the answer should be -4

For the second one the answer should be 3

Answer: Simplifying

4a + 3(a + 1) = 24

Reorder the terms:

4a + 3(1 + a) = 24

4a + (1 * 3 + a * 3) = 24

4a + (3 + 3a) = 24

Reorder the terms:

3 + 4a + 3a = 24

Combine like terms: 4a + 3a = 7a

3 + 7a = 24

Solving

3 + 7a = 24

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-3' to each side of the equation.

3 + -3 + 7a = 24 + -3

Combine like terms: 3 + -3 = 0

0 + 7a = 24 + -3

7a = 24 + -3

Combine like terms: 24 + -3 = 21

7a = 21

Divide each side by '7'.

a = 3

Simplifying

a = 3

is it always true that the y-values of a quadratic function have opposite signs on either side of a zero of the function? Explain Please

Answers

It is not always true because some of them do have a function

Find the difference

Answers

Answer:

Step-by-step explanation:

your answer would be -9

Answer:

-9

Step-by-step explanation:

A small bag of chips weighs 48 grams. A large bag of chips weighs three times as much as the small bag. How many grams will 7 large bags of chips weigh?

Answers

Answer:

the answer is Bg=3(48g)=144g for each large bag.

Step-by-step explanation:

just copy and paste the question that you have into a google search bar and the answer will pop up...

Difficult for me but should be easy for some big brain out there

Answers

Answer:

I would say the last one

Step-by-step explanation:

Answer:

42/45

Step-by-step explanation:

PLEASE HELP AS FAST AS YOU CAN❗❗❗
The total amount of sap y (in ounces) collected from a tree after x weeks is represented by the equation y = 3x + 8. How much more total sap is there after 5 weeks than after 4 weeks?​

Answers

x=weeks to get your answer you need to solve y=3(5)+8 which is y=23 and y=3(4)+8 which is y=20. so then you do 23-20 and that equals 3. the answer is 3...i hope this is right!!

3 ounces more sap is there after 5 weeks than after 4 weeks.

What is an equation?

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Given that, the total amount of sap y (in ounces) collected from a tree after x weeks is represented by the equation y= 3x + 8.

Here, x=4 and x=5 is given

When x=4, we get

y=3(4)+8

= 20

When x=5, we get

y=3(5)+8

= 23

Difference=23-20=3 ounce

Therefore, 3 ounces more sap is there after 5 weeks than after 4 weeks.

To learn more about an equation visit:

https://brainly.com/question/14686792.

#SPJ2

The sum of two consecutive integers is 81. Determine the lesser of the two numbers.

Answers

Given that,

the two numbers are consecutive

The two numbers are

x and x + 1

Sum of the numbers = 81

x + (x + 1) = 81

x + x + 1 = 81

2x = 81 - 1

2x = 80

x = 80/2

x = 40

Therefore, the two numbers are x = 40 and x + 1 = 41

There are 630 calories in seven ounces of a certain ice cream. How many calories are
there in two pounds?
1 pound = 16 ounces
Before
you try that problem, answer the question below.
How many ounces will you need to find the number of
calories for?
What’s the answer?

Answers

Answer:

Hello mate here’s the answer 32 ounces

Step-by-step explanation:

2 pounds = 2x1(1 pound)

=2x(16 ounces)

=32 ounces

How do you write 350% as a fraction or mixed number?

Answers

Answer:

3 50/100 or 3 1/2

Step-by-step explanation:

Each 100% is one, so that would equal 3. There would be 50% left, and that would be 50/100 or 1/2.

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