A piano teacher charges $20 per lesson plus a $30 fee for supplies. Another
teacher does not have a supply fee but charges $30 per lesson. After how
many lessons will the cost of the two teachers be the same?

Answer:

0.25

Step-by-step explanaition:

The z-score represents how many deviations a value is from the mean. When the bar measures 3.25, the z-score is +1. When the bar measures 3.50, the z-score is +2. You'll notice that whenever the bar size increases by 0.25, the z-score goes up +1. So, the standard deviation from the mean must be 0.25.

Answer:

0.25

Step-by-step explanation:

i took the test

Answer:

a

mark

me

brainlist

omg

Step-by-step explanation:

If rong let

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a

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me know

the answer is 100 dolers$

Answer:

4

Step-by-step explanation:

7+ (-3)= 4 lol not sure if thats what you wanted but thats what i understood from your question

Answer:

C. 21/50 because 21/50 written in a decimal is 0.42

Answer:

1200 ft in one hour

Step-by-step explanation:

The ratio of Sam crawling 20 ft in one minute can be written as:

20:1

Multiply the ratio by 60 to get the minutes to 60 minutes, because there are 60 minutes in an hour:

 20    :    1

×60     ×60

To get:

1200:60  ⇒  This means Sam can crawl 1200 ft in 60 minutes, which is the same as 1200 ft in one hour.

Hope this helps! :)

Answer:

15,625

Step-by-step explanation:

2h=120m

120/20 = 6

5^6 = 15,625

Answer:

C = 7x + 5y

Step-by-step explanation:

Algebraic Expressions

Erica purchased tickets for a movie. It's given each adult ticket cost $7 and each youth ticket cost $5.

If each adult ticket cost $7 and she bought x tickets, then she spent 7x dollars on adult tickets.

Similarly, if each youth ticket cost $5 and she bought y tickets, then she spent 5y dollars on youth tickets.

The total cost C is the sum of the individual costs, thus:

C = 7x + 5y

Answer:

Step-by-step explanation:

solution is (4,3)

OR

x=4

y=3

this point lies in both the tables.

we have to find a pair which lies on both.

Answer: 11 3/8

18 - 6 5/8 = 11 3/8

Answer:

They all have 180 degrees

Step-by-step explanation:

Answer:

You got A and D is right but C and B is switched

Step-by-step explanation:

The main thing is to first look at the y-intercept, C and B have different y-intercepts than the equation u gave them. So keep an eye out for that.

Answer:  3 and 18

Step-by-step explanation:

x + 6x = 21

7x = 21  Divide both sides by 7

x = 3   That's the first number. Multiply by 6 for the second number:

6 × 3 = 18

Answer:

[tex](-1,7)[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

Point P(-3, 5)

Point Q(1, 9)

Step 2: Find Midpoint

Simply plug in your coordinates into the midpoint formula to find midpoint

Answer:

y=5+5/2x

Step-by-step explanation:

Answer:

Step-by-step explanation:

-8 because a negative times a positive is a negative so w times 4 equals I and since it’s a negative sign it’s -8

Answer:

x=1.33

Step-by-step explanation:

3x+2=6

3x=4

x=[tex]\frac{4}{3}[/tex]

x=1.33

to check your answer

3 x 1.33 + 2=6

3.99+2=6

5.99=6

6=6

Answer:

32 divided by 8 =4 Just multiply 4 and 8 to get your answer.

Step-by-step explanation:

Hey! hoped I helped Im Eve btw Have an amazing day and consider marking this as brainliest if you do thank you in advance!

Answer:

D

Step-by-step explanation:

3/4 × 2/6 = 1/4

3/4÷6/2=1/4

Answer:

B.) 24

Step-by-step explanation:

Answer:

2, 7, 27, 42

Step-by-step explanation:

y = 5*1 -3 =2

y = 5*2 -3 =7

y = 5*6 -3 = 27

y = 5*9 -3 = 42

Answer:

See below

Step-by-step explanation:

[tex]y = 5x - 3 \\ \\ \begin{vmatrix}x &\: \: \: y \\ \\ 1&\: \: \: \boxed{\red {\bold 2} } \\ \\ 2&\: \: \: \boxed{\purple {\bold 7} }\\ \\ 6&\: \: \: \boxed{ \orange {\bold {27} } } \\ \\ 9&\: \: \: \boxed{\pink{\bold {42} } } \end{vmatrix}[/tex]

Answer:   If a team uses 75 water bottles when the temperature is 60 degrees, ( 75 - 15 = 60 )

I guess if they have 120 bottles, you'd have to take away 15 again, which = 105

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Sorry if i'm wrong

Answer:

12345

Step-by-step explanation:

give me a brainliest plees

Answer:

you can create your box plot from the following answers

a) minimum = 13

b) first quartile = 17

c) median = 22.5

d) third quartile = 26.5

e) maximum = 32

e) interquartile range = 26.5 - 17 = 9.5

Step-by-step explanation:

minimum and maximum values are self-explanatory

first quartile is derived by getting the median of the lower half of data (the median will divide the data into the lower half and the upper half)

third quartile is derived by getting the median of the upper half of data

the median is sometimes referred to as the second quartile

box plots are all about quartiles so that you can see where 25% of the data reside, or 50% or 75%, etc

Answer:

33

Step-by-step explanation:

Answer:

34.50

Step-by-step explanation:

multiply 30 times 0.15 to get 4.50 then just add that to 30 for 34.50

Answer and explanation:

Given:

Royal soil= $6.50 per pound

Royal peasant = $2 per pound of 10 pounds

Blend total pounds is x+10, price is unknown hence solved below

Using algebra

We find unknown x = number of pounds of royal soil

$6.50(x)+$2(10)=6.50x+20/x+10(x+10)

= 6.50x+20= 6.50x²+85x+200

Answer:  its 8 :)

i hope this helps!!!!

Answer:

It is B

Step-by-step explanation:

4, -4 is longer than 2 units

-2, -2 is longer than 2 units

-1, -4 is longer than 2 units

Answer:

(5.4k+7.9m+8.1n) centimeters

Step-by-step explanation:

Given the side length of a triangle;

S1 = (1.3k+3.5m) cm

S2 = (4.1k-1.6n) cm

S3 = (9.7n+4.4m) cm

Perimeter of the triangle = S1+S2 + S3

Perimeter of the triangle = (1.3k+3.5m) + (4.1k-1.6n) + (9.7n+4.4m)

Collect the like terms;

Perimeter of the triangle = 1.3k+4.1k+3.5m+4.4m-1.6n+9.7n

Perimeter of the triangle = 5.4k+7.9m+8.1n

Hence the expression that represents the perimeter of the triangle is (5.4k+7.9m+8.1n) centimeters