1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
max2010maxim [7]
3 years ago
5

Alexis bought x boxes of cereal for $3 each, including tax, and paid with a $20 bill. Which expression represents the total amou

nt of change she should receive?
20 – 3x
(3 – 20)x
3x – 20
(20 – 3)x
Mathematics
2 answers:
Paha777 [63]3 years ago
8 0

Answer:

it is 3x-20

Step-by-step explanation:

when u multiply the three and the x you will get your anser and then u will subtract it out of 20

Katarina [22]3 years ago
3 0

Answer:

A. I got it right on edge 2021

Step-by-step explanation:

You might be interested in
Select the correct answer from each drop-down menu.
RSB [31]

Evidence are simply facts to support a claim, while counterexamples are instances to show the contradictions in a claim

<em>The question is incomplete, as the required drop-down menus are missing. So, I will give a general explanation</em>

<em />

To show that a statement is true, you need evidence.

Take for instance:

\mathbf{if\ a^2 = 4,\ then\ a = 2}

The evidence that the above proof is true is by taking the <em>squares of both sides of </em>\mathbf{a = 2}

\mathbf{a^2 = 2^2}

\mathbf{a^2 = 4}

However, a counterexample does not need a proof per se.

What a counterexample needs is just an instance or example, to show that:

\mathbf{if\ a^2 = 4,\ then\ a \ne 2}

An instance to prove that: \mathbf{if\ a^2 = 4,\ then\ a = 2} is false is:

\mathbf{a = -2}

Hence, the complete statement could be:

<em>In a direct proof, evidence is used to support a proof . On the other hand, a counterexample is a single example that shows that a proof is false.</em>

<em />

Read more about evidence and counterexample at:

brainly.com/question/88496

5 0
2 years ago
Leslie drank 4/5 pint of juice and Hank drank 7/10 pint of juice. Who drank more
amid [387]
Leslie did. If you multiply 4/5 by two, you get 8/10. 8/10 is greater than 7/10. 
5 0
3 years ago
Read 2 more answers
I will mark brainliest to whoever gets this answer! Please help!
lisov135 [29]

Answer:

20 yd²

Step-by-step explanation:

This problem is really easy once you break it down!

First, find the area of the triangle.

A = \frac{1}{2}bh

b = 5 + 3 = 8

h = 4 + 4 = 8

A = \frac{1}{2}*8*8

A = 32

Now find the area of the square.

A = lw

A = 4*3

A = 12

The last step is to subtract.

Area of triangle - area of rectangle =

32 - 12 = 20

20 yd²

Hope this helped! :)

4 0
3 years ago
Read 2 more answers
Use the information to solve the triangle. Round your answers to two decimal places. Hint: draw a sketch first to determine if y
tatyana61 [14]

Answer:

A = 40.0 (3 sig. fig)

C = 40

c = 15

Step-by-step explanation:

Using sin law,

sinA/15 = sin100/23

A = 40.0 (3 sig. fig)

Using angle sum of triange,

C = 180 - 40.0 - 100 = 40

Since angleA = angleC, by side equal opp angles, c = 15

6 0
3 years ago
On a 10-item test, three students in Professor Hsin's advanced chemistry seminar received scores of 2, 5, and 8, respectively. F
Inessa [10]

Answer:

For this distribution of test scores, the standard deviation is equal to the square root of 9

D) 9

Step-by-step explanation:

We need to know the standard deviation formula:

S=\sqrt{\frac{sum(x-Am)^2}{n-1} } (1)

Where:

S: Standard deviation

sum: Summation

x: Sample values

Am: Arithmetic mean

n:   Number of terms, in this case 3

Now, we need to know the arithmetic mean of the sample values: 2, 5 and 8

Am=\frac{2+5+8}{3} = 5

To know the standard deviation we need to have the summation of each term minus the arithmetic mean squared.

(x-Am)^2 of each term:

(2-5)^2=9\\(5-5)^2=0\\(8-5)^2=9

Now, we can find the standard deviation:

S=\sqrt{\frac{9+0+9}{3-1} } \\S=\sqrt{\frac{18}{2} } \\S=\sqrt{9}

The standard deviation is equal to the square root of 9

4 0
3 years ago
Read 2 more answers
Other questions:
  • If g(x)=−3x+9 g ( x ) = − 3 x + 9 and f(x)=2x+7 f ( x ) = 2 x + 7 , what is the value of g(f(x)) g ( f ( x ) ) ?
    11·1 answer
  • For the equation, y = −3x + 5, tell whether its graph passes through the first quadrant
    12·1 answer
  • Solve the inequality 6h−5(h−1)≤7h−11 and write the solution in interval notation. Use improper fractions if necessary.
    10·1 answer
  • You paint 1313 of a wall in 1414 hour. At that rate, how long will it take you to paint one wall?
    9·1 answer
  • Math please please please help
    8·1 answer
  • a diver 20 ft below the surface of the water starts to swim upward at a rate of 2 ft per second right an equation to model the d
    14·1 answer
  • There are 42 students in a class.
    7·1 answer
  • L really need help plz i will mark brainliest plz help​
    8·2 answers
  • Select the two statements that are true about the equation y − 10 = 60(x − 40).
    15·2 answers
  • Rich chooses a 4-digit positive integer. He erases one of the digits of this integer. The
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!