Mathematics Middle School

Lin's father is paying for a $20 meal. He has a 15% off coupon for the meal. How much will he pay?

Answers

Answer 1

Answer:$17

Step-by-step explanation:

x/20=15/100 then solve for x

Answer 2

Answer:

Lin's father will pay $17.

Step-by-step explanation:

15 ÷ 100 = 0.15.

0.15 x $20 = $3.

$20 - $3 = $17.

Related Questions

The shipping fee to send a package via US Priority Mail costs $6 per pound and includes a $5 insurance fee. If an equation is written to calculate the shipping charge, what is the slope?

a) 6

b) 6/5

c) 5

d) 5/6

Answers

The answer is b! For the question

A shark can swim 24 meters in 36 seconds. At this rate, how far, in meters, will the shark swim in 2 minutes?

Answers

Answer:80 meters

Step-by-step explanation: 24 meters = 36 secs

2 mins = 120 secs

Cross multiply

24×120/36

= 80 meters

Hope I helped you!!

I'm super confused, help.

Answers

Answer:

5/6 = 21/35

Step-by-step explanation:

I hope this helps. I'm not sure if its correct

Answer:

i would go with C my guy

Step-by-step explanation:

PLEASE HELP c=89.2yd geometry

Answers

Answer:

sorry

Step-by-step explanation:

Answer:

search it up there is a lesson

Step-by-step explanation:

2. Suppose you are a new employee. You notice that each payment option describes a sequence and decide to use rules to help determine which option to take.
(a) Determine the iterative rule for each sequence. Show your work.
(b) Your friend trusts your tables in Problem 1, but wonders if you wrote the iterative rules correctly. Show two calculations to convince your friend that both your rules work.

3. Consider the iterative rules you wrote in Problem 2.
(a) Explain why the rules are functions.
(b) Your friend says that because the rules are functions, they can be graphed and must have y-intercepts. How would you respond to your friend’s comment?
(c) Your friend uses your rules to determine the outputs when the inputs are 18.5. Explain why her outputs are meaningless in this situation. What would you tell her about the inputs she can use?

>THESE ARE NOT MULTIPLE CHOICE QUESTIONS!
Will give brainliest to anyone who answers all letters of both questions.

Answers

I only solved Option A in this answer, I think you needed to do both. You can do Option B in the same way!

(a) You're supposed to find the pattern here. Use the slope-intercept form of the equation of a line. y=mx+b. In this situation, x is the week, and y is the amount paid. If you wanted, you could use whichever variables you wanted, of course. Basically, you need to find the slope, represented by m, which is the amount the amount paid increases by each week, and the y-intercept, b, which is the "amount paid" at week 0. (The y-intercept doesn't really make sense in this situation, but we'll get to that later.) You can use the formula m=(y2-y1)/(x2-x1). (x1,y1) and (x2,y2) are the input/output pairs. The x-coordinate is the week, and the y coordinate is the amount paid. Because the weeks are incrementing by 1, x2-x1=1. Because of this, you can just subtract the values and find out the slope is 50/week. After that, to complete the rule, you need to find the y-intercept. If the amount paid is 200 on week 1, and the amount paid increases by 50 each week, then you should be able to work backwards. 200-50=150

Another way to think about it is by plugging your points into the incomplete rule. Let b represent the y-intercept. Plug in the values for week 1 and solve for b.

Your work would probably look something like:

m=(y2-y1)/(x2-x1)

(x1,y1)=(1,200)

(x2,y2)=(2,250)

m=(250-200)/(2-1)

=50/1

=50

y=50x+b

200=50(1)+b

200=50+b

b=200-50

=150

y=50x+150

(b) If I understand the question correctly, you have to show two instances that prove that your rule work. Just pick any two weeks, like weeks 3 and 4 and show how the rule is correct.

y=50x+150

x=3

y=50(3)+150

=150+150

=300

(This is the same value that's in the chart, which proves that the rule works. Do the same thing with another week.)

(a) The rules are functions because each input has only one output. You can test this out, it's true.

(b) So we did have to find the "y-intercept" earlier. But you have to look at the domain. There won't be any amount paid on Week 0, payment starts at Week 1. So you would have to respond that yes, they can be graphed, but there's no y-intercept; the graph starts at week 1. Aditionally, there are only data points at the integer values of x. Look at part c.

(c) The outputs are meaningless because you're counting the time by weeks. There won't be any amount paid in the middle of the week, so she can only use integer inputs.

I hope this helps!! This is my first time answering a question on here.

The perimeter of a square is 176 centimeters. If the square is dilated by a scale factor of 0.25, what is the length of each side of the new square?

Answers

Answer:

Step-by-step explanation:

First we need to find the length of each side: 176/4 = 44

Then multiply that by the scale factor = 11.

Yeah i think it’s a

Hello Answer this Question

Answers

Answer:

I think it might be 1 cup because I added all of the water which was 3 cups and divided it by 3 which is 1

Answer:

The answer is 1 cups

Step-by-step explanation:

Please help answer the question :)

Answers

7x+78 - 142=6x+73

7x-6x=73-78+142

×=137

so sam wrote

6x+73

822+73

=895 lines

hannah wrote

7x+78

959+78

1037

verify

1037

-895

= 142

hope it helps

Answer: 895

Step-by-step explanation: yeet and skurt

Andy's Appliance Repair charges a certain amount for house calls based on the amount of time that it takes for the repair. Use the graph shown below to fill out the missing representations. Then, answer the questions that follow. (I don't need 3-9 done)

Answers

i'm pretty sure the answer is 39

how to interpret the meaning of a slope of -1.6

Answers

hi higisnfiqjwijffkkfkd

Interpret: The rate of exchange in whichever’s graph or table your are looking at is deceasing at a constant rate of -1.6, following the linear equation y=mx+b. Remember in this scenario your M is the slope and B is the y-intercept, X remains as a variable.

Help pls?
I need all of dem btw

Answers

What grade level is this

A rhombus has 10-in. sides, two of which meet to form a 30º angle. Find the area of the rhombus (Hint: Use a special right triangle to find the height.).

Answers

[ 10 ] [ 10 sin 30° ] = 50 √3....base x height

Can I please get an explanation and answer for this problem.

Answers

Answer:

132 degrees

Step-by-step explanation:

This is because if you have a 90 degree angle than the angles connected to it will be equal

It would be 42.

To solve this, first look at the information we're given. We know that the shape the missing angle is part of is a triangle, so therefore, the sum of the interior angles will always be 180 degrees. There is a right angle inside of the triangle. One of the exterior angles is 132 degrees.

The first thing we can see from this is that the two interior angles which are not right angles must add up to 90 degrees. Since the sum of all the interior angles is 180 degrees, and there is already a 90 degree angle, the other two must add up to 90 degrees.
The next step would then be to find the other interior angle which is not the missing angle. We can do this because of the exterior angle.
A straight line always has a measure of 180 degrees. In this case, we can see that the line the exterior angle is resting on is straight, and the exterior angle + the other interior angle = the line. Therefore, 132 + the other interior angle must equal 180 degrees.
Subtract 132 from both sides, and you get the other interior angle has a measure of 48 degrees.
Now, to take that and figure out the missing angle.
We know that the angle with a measure of 48 degrees and the missing angle must add up to 90 degrees, as stated above.
48 + missing angle = 90
Subtract 48 from both sides, and you get the measurement of the missing angle is 42 degrees.

PLEASE HELP ME ASAP
Explain how to write:
a. The sum of a number and the product of the same
b. The ratio of twice a number and 5

Answers

Answer:

a. a*(a+b)

b. 2(a)+5

Step-by-step explanation:

Lets just say that a is your number. B was the second number in your first equation being added to a.

Help me please hurry

Answers

Answer:

Its 28

Step-by-step explanation:

Q[tex]3[/tex] = [tex]\frac{3}{4}[/tex] (n+1)

The answer is 18
Have an amazing day

What is 2x+3=3x-6 I need help I have 2 hours

Answers

Answer:

Step-by-step explanation:

2x+3=3x-6

6+3 = 3x - 2x

x = 9

I hope im right!!

Answer: 9
3+6
2x+9=3x
3x-2x
9=1x
9/1= 9

Help.......?!!?!/1?!

Answers

Answer:

I think 157 pavers

Step-by-step explanation:

I may be able to help with number 10, if the trees are to be decorated with a ring of decorative pavers then we have to find the circumference, if the radius is 5 then using the circumference formula, 2×3.14(pi)×the radius, you'll get 31.4 and since there is 5 trees to be decorated then multiply 31.4 times 5 which will give you 157 feet of pavers to surround all five trees. I apologize if it is incorrect.

plz help. Write an equivalent expression to show the relationship of multiplication and addition. (Use the x for multiplication, if necessary) d + d + d + d + d

Answers

5d I’m pretty sure is correct

i think 5d would right because 5 of the d’s and put them into one

About 5 - 6% of the student population has more than 3 pets. If the student population is 450 people, how many would have more than 3 pets?

Answers

Answer:

300

Step-by-step explanation:

27 students is the answer

A pair of shoes originally cost $60. If they are on sale with a mark-down of 25%, how much do they cost now?

Answers

$45!

if u were discounting something, you would do ( .discount amount x original price ) - original amount! you will get a “-“ with the answer, just remove the “-“!!

Find the total surface area of the following net:

Answers

i don’t knowwwwwwwwwwwwww

72 sq cm is the answerrrrrr

About 5 - 6% of the student population has more than 3 pets. If the student population is 450 people, how many would have more than 3 pets?

PLEASE HELP ME PLLLEASEEEEEEEEE

Answers

Answer:

23-27 students makes up the popuation of the 5-6%

Step-by-step explanation:

450*.05= 22.5

450*.06= 27

If each person at the party eats 2/8 of a pound of cheese and there are 9 people at the party, how many pounds of cheese are needed for the party?

Answers

You will need 2 1/2 of cheese since 2/8 times 9= 2 1/2

Find the GCF of the terms of the polynomial.

–18q^3 – 6q

A. 6

B. 6q

C. -6q

D. -6q^3

please answer WITH AN EXPLANATION thanks

Answers

The answer is B :).

-3x=2x+19 solve for x

Answers

-3.8
-3x=2x+19
First you need to get rid of 2x so subtract 2x from each side
You should have -5x=19
Then divided by -5
And you get x=-3.8
I hope this is correct hope it help

Bobby bought 10 pencils. He only liked half his pencils. How many pencils did bobby like?

Answers

Answer:

5 pencils.

Step-by-step explanation:

I divided 10 by 2.

5 because half of 10 is 5

what are the coordinate of ABC after a dilation with center 0,0 and a scale factor of 3 please help

Answers

Answer:

where the actually question at?

Step-by-step explanation:

I will heart and rate if you solve this :>
random answers will be reported

Answers

Answer:

PMDAS

Step-by-step explanation:

PEMDAS

P - Parentheses
E - Exponents
M - Multiply
D - Divide
A - Addition
S - Subtraction

I hope this helped !!

Help please helppppp

Answers

Answer:

oof thats hard

Step-by-step explanation:

PLEASE HELP NO TROLLS
3. Find the measure of angle A.

Answers

Answer:

Step-by-step explanation:

Since this triangle is a 90 degree angle, all you'd have to do is subtract 55 from 90 and you've got you answer.

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