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
Lostsunrise [7]
3 years ago
8

Kyle has been keeping his eye on a sound system that costs x dollars. The system goes on sale for 15% off the regular price. Whi

ch expression can Kyle use to find the sale price? A) .85x B) 1 + .15(x) C) x − .15 D) 1 − .15(x)
Mathematics
2 answers:
MakcuM [25]3 years ago
6 0
To find the sales price
X-0.15x=0.85x
X is the regular price
For example if the regular price is 1000 the sales price
1000-0.15×1000=850

Answer a
malfutka [58]3 years ago
5 0
He can use A, 0.85(x) to find the sale price.
You might be interested in
Determine the area enclosed by y=2x+3, the x-axis and the ordinates x=3 and x=4​
jok3333 [9.3K]

Answer:

\displaystyle \int\limits^4_3 {2x + 3} \, dx = 10

General Formulas and Concepts:
<u>Calculus</u>

Integration

  • Integrals

Integration Rule [Reverse Power Rule]:                                                           \displaystyle \int {x^n} \, dx = \frac{x^{n + 1}}{n + 1} + C

Integration Rule [Fundamental Theorem of Calculus 1]:                                 \displaystyle \int\limits^b_a {f(x)} \, dx = F(b) - F(a)

Integration Property [Multiplied Constant]:                                                     \displaystyle \int {cf(x)} \, dx = c \int {f(x)} \, dx

Integration Property [Addition/Subtraction]:                                                   \displaystyle \int {[f(x) \pm g(x)]} \, dx = \int {f(x)} \, dx \pm \int {g(x)} \, dx

Area of a Region Formula:                                                                               \displaystyle A = \int\limits^b_a {[f(x) - g(x)]} \, dx

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify.</em>

y = 2x + 3

<em>x</em>-interval [3, 4]

<em>x</em>-axis

<em>See attachment for graph.</em>

<u>Step 2: Find Area</u>

  1. Substitute in variables [Area of a Region Formula]:                               \displaystyle A = \int\limits^4_3 {2x + 3} \, dx
  2. [Integral] Rewrite [Integration Property - Addition/Subtraction]:           \displaystyle A = \int\limits^4_3 {2x} \, dx + \int\limits^4_3 {3} \, dx
  3. [Integrals] Rewrite [Integration Property - Multiplied Constant]:           \displaystyle A = 2 \int\limits^4_3 {x} \, dx + 3 \int\limits^4_3 {} \, dx
  4. [Integrals] Integrate [Integration Rule - Reverse Power Rule]:               \displaystyle A = 2 \bigg( \frac{x^2}{2} \bigg) \bigg| \limits^4_3 + 3(x) \bigg| \limits^4_3
  5. [Integrals] Integrate [Integration Rule - FTC 1]:                                       \displaystyle A = 2 \bigg( \frac{7}{2} \bigg) + 3(1)
  6. Simplify:                                                                                                     \displaystyle A = 10

∴ the area bounded by the region y = 2x + 3, x-axis, and the coordinates x = 3 and x = 4 is equal to 10.

---

Learn more about integration: brainly.com/question/26401241

Learn more about calculus: brainly.com/question/20197752

---

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Integration

3 0
2 years ago
A florist is arranging flowers in vases. There are 4 red flowers and 5 white flowers in every vase. The florist wants to make on
vichka [17]

There will be 72 flowers in total in the large arrangement.

Step-by-step explanation:

No. of red flowers in vase = 4

No. of white flowers in vase = 5

Ratio of red flowers to white flowers = 4:5

No. of red flowers in large arrangement = 32

No. of white flowers in large arrangement = w

Ratio of red flowers to white flowers = 32:w

Using proportion;

Ratio of red flowers to white flowers :: Ratio of red flowers to white flowers

4:5::32:w

Product of extreme = Product of mean

4*w=32*5\\4w=160

Dividing both sides by 4

\frac{4w}{4}=\frac{160}{4}\\w=40

Total flowers in large arrangement = Red flowers + white flowers

Total flowers in large arrangement = 32 + 40 =72

There will be 72 flowers in total in the large arrangement.

Keywords: ratio, proportion

Learn more about ratios at:

  • brainly.com/question/4228574
  • brainly.com/question/4279146

#LearnwithBrainly

5 0
3 years ago
What is arccos(−1) in Radians.
Free_Kalibri [48]

Answer:

π radians

Step-by-step explanation:

The arc cos(- 1) in degrees is 180° and 180° = π radians

7 0
4 years ago
Pls open first to answer correctly get brainlist
KengaRu [80]

Answer:

C AND D

Step-by-step explanation:

it is a rational and real number

5 0
3 years ago
Read 2 more answers
How many lbs are in a metric ton​
siniylev [52]

Answer:

2204.62

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • One angle in a triangle is 10 degrees more than the smallest angle in the triangle, whereas the other angle is 20 degrees more t
    15·1 answer
  • Jamal bought 4 pounds of blueberries for $12. Which of the following proportions could be used to help him figure out how much 2
    8·1 answer
  • The diagonals of a parallelogram are perpendicular to each other. The perimeter of the parallelogram is 48 feet. Find the length
    15·1 answer
  • Please helpp with this!!
    8·1 answer
  • What's greater 5.05 or 5.050
    8·1 answer
  • Evaluate the tangent of 28° rounded to four decimal places.
    14·2 answers
  • 4( − 5 ) – 10 = 2 ( + 6 ) and check your answer
    5·1 answer
  • Which expression is equivalent to 7 2/3 ⋅ 7 1/4?
    11·2 answers
  • What is the constant of proportionality in this proportional relationship?
    6·1 answer
  • Please answer I will make you brainliest
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!