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
Maksim231197 [3]
3 years ago
13

HELPPP!!!!!! URGENT!!!​

Mathematics
1 answer:
Burka [1]3 years ago
6 0

Answer:

20

Step-by-step explanation:

x = price

y = number of keyboard

xy = 540

(x-2)(y+3) = 540

x = 540/y

==> x = 20

==> y = 27

You might be interested in
How to describe the behavior of the f (x) from the left and from the right of vertical asymptote
Naddik [55]

Here you go, hope this kinda helps you out :)

8 0
3 years ago
A home has a triangular backyard. The second angle of the triangle is 4degrees more than the first angle. The third angle is 8de
amid [387]

Answer:

1st angle = X

2nd angle = X + 7

3rd angle = X + 18

Then (sum. them): 3X + 25 = 180   ==>  X = 51.67 degree

Therefore,

1st angle = 51.67 degree

2nd angle = 58.67 degree

3rd angle = 69.67 degree

5 0
3 years ago
Read 2 more answers
Why are 5:7 and 10:14 equivalent?
MAVERICK [17]

Answer:

Because 5+5=10 and 7+7=14

4 0
2 years ago
Read 2 more answers
ricardo have two snacks.One snack has the mass of 167 grams,and the other has 243 grams what is the difference in the mass of sn
Fed [463]
243 - 167 =76
The difference is 76g.
You just need to find the difference between both snacks
3 0
3 years ago
There are 15 identical pens in your drawer, nine of which have never been used. On Monday, yourandomly choose 3 pens to take wit
DaniilM [7]

Answer: p = 0.9337

Step-by-step explanation: from the question, we have that

total number of pen (n)= 15

number of pen that has never been used=9

number of pen that has been used = 15 - 9 =6

number of pen choosing on monday = 3

total number of pen choosing on tuesday=3

note that the total number of pen is constant (15) since he returned the pen back .

probability of picking a pen that has never been used on tuesday = 9/15 = 3/5

probability of not picking a pen that has never been used on tuesday = 1-3/5=2/5

probability of picking a pen that has been used on tuesday = 6/15 = 2/5

probability of not picking a pen that has not been used on tuesday= 1- 2/5= 3/5

on tuesday, 3 balls were chosen at random and we need to calculate the probability that none of them has never been used .

we know that

probability of ball that none of the 3 pen has never being used on tuesday = 1 - probability that 3 of the pens has been used on tuesday.

to calculate the probability that 3 of the pen has been used on tuesday, we use the binomial probability distribution

p(x=r) = nCr * p^{r} * q^{n-r}

n= total number of pens=15

r = number of pen chosen on tuesday = 3

p = probability of picking a pen that has never been used on tuesday = 9/15 = 3/5

q = probability of not picking a pen that has never been used on tuesday = 1-3/5=2/5

by slotting in the parameters, we have that

p(x=3) = 15C3 * (\frac{2}{5})^{3} * (\frac{3}{5})^{12}

p(x=3) = 455 * 0.4^{3} * 0.6^{12}

p(x=3) = 455 * 0.064 * 0.002176

p(x=3) = 0.0633

thus probability that 3 of the pens has been used on tuesday. = 0.0633

probability of ball that none of the 3 pen has never being used on tuesday  = 1 - 0.0633 = 0.9337

3 0
3 years ago
Other questions:
  • Is f(x) =(x+1)(x+2) an antiderivative of f(x) =2x+3
    12·1 answer
  • The surface area of a sphere is 452.39 mm2, find the diameter of the sphere to the
    13·2 answers
  • The dimensions of a rectangular prism are length is 2 1/4 feet width is 1 foot and height is 1 1/4 feet and the length of the si
    10·2 answers
  • I need help with this asap
    5·2 answers
  • 1. How many atoms of Hydrogen (H) are in the given chemical formula? *
    12·2 answers
  • Mrs Perry shares out 21 biscuits between
    13·2 answers
  • Pls answer I give brainliest thank you! Number 4
    11·2 answers
  • Help last assignment pls.
    6·1 answer
  • Wei biked 91 meters. Paul biked 65 meters. How much farther did Wei bike than Paul? Enter the answer in the box. meters​
    11·1 answer
  • 10
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!