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
icang [17]
3 years ago
15

I need help ASAP my friends so please help me :-)

Mathematics
1 answer:
mezya [45]3 years ago
6 0

Answer:

40%

Step-by-step explanation:

decrease in price = 45 - 27 = 18

x% of 45 = 18

x= 40

You might be interested in
​3√27+10 ​ What is the value of the expression?
leonid [27]

Answer:

Exact Form:

9

√

3

+

10

Decimal Form:

25.58845726

Step-by-step explanation:

5 0
4 years ago
- + 106 = 315 cubic inches
WARRIOR [948]

Answer:585 cubic inch

Step-by-step explanation:

volume=15 x 10 x 3 + 9 x 3 x 5

Volume=450 + 135

Volume=585

8 0
4 years ago
Find any domain restrictions on the given rational equation:
Maurinko [17]

Answer:

\dfrac{x}{2 \cdot x + 14} + \dfrac{x - 4}{6} = \dfrac{3}{x^2} + 2\cdot x - 35; Domain \ restriction \ x \neq 0 \   or \  -7

Step-by-step explanation:

The given rational equation is presented here as follows;

\dfrac{x}{2 \cdot x + 14} + \dfrac{x - 4}{6} = \dfrac{3}{x^2} + 2\cdot x - 35

A domain restriction are the limits to the ranges of input values (x-values) of a function

The three main types of domain restrictions are the reciprocal function, the log function, and the root function

The form of restriction in the given rational are reciprocal form, which are;

\dfrac{x}{2 \cdot x + 14}, and \dfrac{3}{x^2}, from which the function is undefined when;

2·x + 14 = 0, therefore when x = -7, or x² = 0, when x = 0

Therefore, the domain restrictions are that the function is defines for all <em>x</em>, except x = -7 and x = 0

The domain restrictions are x ≠ -7 and x ≠ 0.

5 0
3 years ago
Of all customers purchasing automatic garage-door openers, 75% purchase Swedish model. Let X = the number among the next 15 purc
Lelechka [254]

Answer:

a)

P(X=k) = {15 \choose k} * 0.75^{k}*0.25^{15-k}

For any integer k between 0 and 15, and 0 for other values of k.

b)

P(X>10) = 0.2252+ 0.2252+ 0.1559+0.0668+0.0134 = 0.6865

c) P(6 ≤ X ≤ 10) = 0.2737

d)  μ = 15*0.75 = 11.25. σ² = 11.25*0.25 = 2.8125

Step-by-step explanation:

X is a binomial random variable with parameters n = 15, p = 0.75. Therefore

a)

P(X=k) = {15 \choose k} * 0.75^{k}*0.25^{15-k}

For any integer k between 0 and 15, and 0 for other values of k.

b)

P(X>10) = P(X=11) + P(X=12)+ P(X=13)+P(X=14)+P(x=15)

P(X=11) = {15 \choose 11} * 0.75^{11} * 0.25^4 = 0.2252

P(X=12) = {15 \choose 12} * 0.75^{12} * 0.25^3 = 0.2252

P(X=13) = {15 \choose 13} * 0.75^{13} * 0.25^2 = 0.1559

P(X=14) = {15 \choose 14} * 0.75^{14} * 0.25 = 0.0668

P(X=15) = {15 \choose 15} * 0.75^{15} = 0.0134

Thus,

P(X>10) = 0.2252+ 0.2252+ 0.1559+0.0668+0.0134 = 0.6865

c) P(6 ≤ X ≤ 10) = P(X = 6) + P(X = 7) + P(X = 8) + P(X=9) + P(X=10)

P(X=6) = {15 \choose 6} * 0.75^{6} * 0.25^9 = 0.0034

P(X=7) = {15 \choose 7} * 0.75^{7} * 0.25^8 = 0.0131

P(X=8) = {15 \choose 8} * 0.75^{8} * 0.25^7 = 0.0393

P(X=9) = {15 \choose 9} * 0.75^{9} * 0.25^6 = 0.0918

P(X=10) = {15 \choose 10} * 0.75^{10} * 0.25^{5} = 0.1652

Thereofre,

P(6 \leq X \leq 10) = 0.0034 + 0.0134 + 0.0393 + 0.0918 + 0.1652 = 0.2737

d)  μ = n*p =  15*0.75 = 11.25

σ² = np(1-p) = 11.25*0.25 = 2.8125

3 0
3 years ago
In order to attend the carnival, students must pay a $5 admission fee plus $0.75 per ride ticket, How many tickets are purchased
Elza [17]

Answer:

well there would be 1 ticket because if you had two then the total would be over 11 dollars it would be 12 dollars so it would have to be one ticket

5 0
3 years ago
Other questions:
  • Which fractions are equivalent to -16/24? Choose all answers that are correct.
    14·1 answer
  • The volume of a cylinder varies jointly with the square of its radius and with its height: V=kr^(2)h Cylinder A has a volume of
    8·1 answer
  • If x=5 and 5=y, then x=y
    5·1 answer
  • Find the​ (a) mean,​ (b) median,​ (c) mode, and​ (d) midrange for the data and then​ (e) answer the given questions. Listed belo
    7·1 answer
  • Several thousand teens were asked one question, "What do you think are the chances you will be married in the next ten years?" T
    8·2 answers
  • 13. Meg saved coins she found for a vear. She found a total of 95 penn
    14·1 answer
  • -3w² + x2 – 5W + 4x²
    14·1 answer
  • There were 10 bowling pins standing before Jared took his first turn. On his first turn, he knocked down 5 pins. On his second t
    8·1 answer
  • . a) In a group of 75 students, 20 liked football only, 30 liked cricket only and 18 did not like any of two games? (i) How many
    10·1 answer
  • The table below shows the amount of time 8 music students spent practicing the piano versus the number of mistakes that they mad
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!