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
3241004551 [841]
3 years ago
10

Stereo has a list price of $150 but is on sale for 20% off the list price what is the sale price of the stereo???

Mathematics
2 answers:
8_murik_8 [283]3 years ago
3 0

Answer:

The correct answer is option A.120

Step-by-step explanation:

Let's start by analyzing the information they have given us.

We know that the stereo has a list price of $ 150, but at the time of payment, we are told that it has a 20% discount.

Now we must find out what the discount was applied to know the final price of the stereo.

One way to calculate the percentage would be multiplying 150 by 0.20

150.0.20 = 30

The discount applied is $ 30, so now we just have to subtract that amount from the original price:

150-30 = 120

Therefore, the correct answer is option A.

BARSIC [14]3 years ago
3 0
A: 120 Dollars. 20% is the same as 1/5. And 1/5 of 150 is 30. When there is 20% ($30) off the sale price, we are left with 120!
You might be interested in
What 30000.48978 rounded up
Fudgin [204]

Answer:

Rounded to the nearest ones: 30000

Rounded to the nearest tenths: 30000.5

Rounded to the nearest hundredths: 30000.49

Rounded to the nearest thousandths: 30000.490

Rounded to the nearest ten-thousandths: 30000.4898

7 0
2 years ago
Find the point (,) on the curve =8 that is closest to the point (3,0). [To do this, first find the distance function between (,)
ELEN [110]

Question:

Find the point (,) on the curve y = \sqrt x that is closest to the point (3,0).

[To do this, first find the distance function between (,) and (3,0) and minimize it.]

Answer:

(x,y) = (\frac{5}{2},\frac{\sqrt{10}}{2}})

Step-by-step explanation:

y = \sqrt x can be represented as: (x,y)

Substitute \sqrt x for y

(x,y) = (x,\sqrt x)

So, next:

Calculate the distance between (x,\sqrt x) and (3,0)

Distance is calculated as:

d = \sqrt{(x_1-x_2)^2 + (y_1 - y_2)^2}

So:

d = \sqrt{(x-3)^2 + (\sqrt x - 0)^2}

d = \sqrt{(x-3)^2 + (\sqrt x)^2}

Evaluate all exponents

d = \sqrt{x^2 - 6x +9 + x}

Rewrite as:

d = \sqrt{x^2 + x- 6x +9 }

d = \sqrt{x^2 - 5x +9 }

Differentiate using chain rule:

Let

u = x^2 - 5x +9

\frac{du}{dx} = 2x - 5

So:

d = \sqrt u

d = u^\frac{1}{2}

\frac{dd}{du} = \frac{1}{2}u^{-\frac{1}{2}}

Chain Rule:

d' = \frac{du}{dx} * \frac{dd}{du}

d' = (2x-5) * \frac{1}{2}u^{-\frac{1}{2}}

d' = (2x - 5) * \frac{1}{2u^{\frac{1}{2}}}

d' = \frac{2x - 5}{2\sqrt u}

Substitute: u = x^2 - 5x +9

d' = \frac{2x - 5}{2\sqrt{x^2 - 5x + 9}}

Next, is to minimize (by equating d' to 0)

\frac{2x - 5}{2\sqrt{x^2 - 5x + 9}} = 0

Cross Multiply

2x - 5 = 0

Solve for x

2x  =5

x = \frac{5}{2}

Substitute x = \frac{5}{2} in y = \sqrt x

y = \sqrt{\frac{5}{2}}

Split

y = \frac{\sqrt 5}{\sqrt 2}

Rationalize

y = \frac{\sqrt 5}{\sqrt 2} *  \frac{\sqrt 2}{\sqrt 2}

y = \frac{\sqrt {10}}{\sqrt 4}

y = \frac{\sqrt {10}}{2}

Hence:

(x,y) = (\frac{5}{2},\frac{\sqrt{10}}{2}})

3 0
3 years ago
A microscope can magnify the object it is looking at 10×4 times. How many times is that? (MCC.8.EE.3) A. 40,000 times B. 40 time
damaskus [11]

Answer:

10×4 = 40

10^4 = 10,000

Step-by-step explanation:

10^4 is another way to write 10⁴ = 10·10·10·10 = 10,000.

Essentially, the exponent tells you how many places to the right of the leading digit the decimal point lies (here, the number of zeros in the number).

_____

<em>Comment on the answer choice</em>

The appropriate answer depends on what you mean by your problem statement. Some microscopes magnify 40 times; others magnify 10,000 times, so we cannot tell the appropriate answer using our knowledge of microscopes.

3 0
3 years ago
A number pattern starts with 10 and follows the rule multiply by 3 What is true
lesya692 [45]

Answer:

B) They have a 0 in the ones place.

Step-by-step explanation:

Given

Number pattern that starts with 10.

Rule: Multiply by 3

Required

Select which statement is truth of the pattern.

First, the pattern needs to be listed out.

Given that the pattern starts from 10 and progresses by multiplying current term by 3.

The pattern is as follows;

10, 30, 90, 270, 810, 2430, 7290, .....

By comparing the given options with the above pattern of numbers. We have:

A) They are odd numbers.

This statement is false because the above pattern of numbers are all even and can never be odd

B) They have a 0 in the ones place.

This statement is truth because all the numbers in the above progression ends in 0. This 0 represents the unit of one's place.

Hence, this statement is truth.

C) They have a 3 in the tens place.

This statement is false;

This is so because they have different digits at tens place. The tens place is the digit prior to the last digit of each number.

D) They can be odd or ever numbers.

As pointed out in (A) above, the number can only be even number because the progression starts with an even number (10) and irrespective of what it's been multiplied by, it'll always remain an even number.

Hence,

Only option B is correct/truth.

Others are incorrect

3 0
3 years ago
How much lower is Checkpoint 4 -186 than Checkpoint 5 2,888?
irina1246 [14]

Answer: 2702

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Another question on Order of operations, what is the value of 28 + 4p? Let p = 11
    10·2 answers
  • Mr. Andropolis wanted to leave the waiter a 12% tip at the restaurant where he ate lunch. If his bill came to $32.46, how much m
    11·1 answer
  • A system of inequalities can be used to determine the depth of a toy, in meters, in a pool depending on the time, in seconds, si
    8·1 answer
  • If AC = 15 centimeters, and BC = 12 centimeters, which does AB equal
    6·1 answer
  • HELP PLEASEEEE ASAPPPPP PLEASEEEEEEEEEEEEEEEEEEE
    6·1 answer
  • When the amount paid for land is 36,000 and the amount for expenses is 10,000 what is the balance in total transactions
    14·1 answer
  • Which of the following values satisfy the inequality shown? You must select all that apply.
    10·1 answer
  • Joey has three john jacob jack Jacob is older than john but younger than Joey. Jack is younger than john list all four brothers
    10·2 answers
  • Step 1: C = 2r Step 2: 6 = 2r Step 3: r = 6/2 Step 4: r = 3 Step 5: A = 360°/x° × × r^2 Step 6: A = 360°/72° × × (3)^2 Step 7:
    6·1 answer
  • The line graph on the y-axis is parallel to the x-axis, 3rd quadrant point, and an open downward parabola.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!