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
eduard
3 years ago
13

What is 21 times 15 in standard algorithm

Mathematics
2 answers:
ValentinkaMS [17]3 years ago
3 0
<h3>que cada diarepe s it                   t </h3>
Dominik [7]3 years ago
3 0

21 \times 15
You might be interested in
The coordinates for the vertices of a patio are (1,5) (6,5) (6,1) and (1,1). Each grid square has a length of 5 feet. Find the p
nadezda [96]

Answer:

The perimeter of the figure is 90\ ft

Step-by-step explanation:

Let

A(1,5),B(6,5),C(6,1),D(1,1)

using a graphing tool

see the attached figure

The perimeter is equal to

P=AB+BC+CD+AD

The figure is a rectangle

so

AB=DC=(6-1)=5*5=25\ ft

AD=BC=(5-1)=4*5=20\ ft

P=2(25+20)=90\ ft

7 0
3 years ago
Read 2 more answers
the cos c of recycle Tin can varies directly as it's weight w in kilograms .if a junk shop pays 60 pesos per kilo of tin cans ho
liraira [26]

Answer:

Step-by-step explanation:

c = 60w

390 = 60w

w = 6.5 kilograms

3 0
3 years ago
Okay can you please help me do this
sertanlavr [38]

Answer:

y=3

Step-by-step explanation:

Multiply 9 from both sides to cancel it out.

-27=-y/9

/9      /9

-3=-y

We can't have a negative variable, so we divide -1 from both sides.

-3=-y

/-1  /-1\

3=y

-hope it helps

7 0
2 years ago
I need help someone PLZZZ HELP ME
Tems11 [23]

Answer:iiikkkkkkkhuf76v76r 7

Step-by-step explanation:12345678910

5 0
3 years ago
The speed with which utility companies can resolve problems is very important. GTC, the Georgetown Telephone Company, reports it
brilliants [131]

Answer:

(a) 11.25 and 1.68  

(b) 0.1651

(c) 0.3903

(d) 0.6865

Step-by-step explanation:

We are given that GTC, the Georgetown Telephone Company, reports it can resolve customer problems the same day they are reported in 75% of the cases and suppose the 15 cases reported today are representative of all complaints.

This situation can be represented through Binomial distribution as;

P(X=r)= \binom{n}{r}p^{r}(1-p)^{n-r} ; x = 0,1,2,3,....

where,  n = number of trials (samples) taken = 15

             r = number of success

             p = probability of success which in our question is % of cases in

                  which customer problems are resolved on the same day, i.e.;75%

So, here X ~ Binom(n=15,p=0.75)

(a) Expected number of problems to be resolved today = E(X)

            E(X) = \mu = n * p = 15 * 0.75 = 11.25

    Standard deviation = \sigma = \sqrt{n*p*(1-p)} = \sqrt{15*0.75*(1-0.75)} = 1.68

(b) Probability that 10 of the problems can be resolved today = P(X = 10)

     P(X = 10) = \binom{15}{10}0.75^{10}(1-0.75)^{15-10}

                    = 3003*0.75^{10} *0.25^{5} = 0.1651

(c) Probability that 10 or 11 of the problems can be resolved today is given by = P(X = 10) + P(X = 11)

    = \binom{15}{10}0.75^{10}(1-0.75)^{15-10}+\binom{15}{11}0.75^{11}(1-0.75)^{15-11}

    = 3003*0.75^{10} *0.25^{5} + 1365*0.75^{11} *0.25^{4} = 0.3903

(d) Probability that more than 10 of the problems can be resolved today is

    given by = P(X > 10)

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

= \binom{15}{11}0.75^{11}(1-0.75)^{15-11}+\binom{15}{12}0.75^{12}(1-0.75)^{15-12} + \binom{15}{13}0.75^{13}(1-0.75)^{15-13}+\binom{15}{14}0.75^{14}(1-0.75)^{15-14} + \binom{15}{15}0.75^{15}(1-0.75)^{15-15}

= 1365*0.75^{11} *0.25^{4} + 455*0.75^{12} *0.25^{3}+105*0.75^{13} *0.25^{2} + 15*0.75^{14} *0.25^{1}+1*0.75^{15} *0.25^{0}

= 0.6865

3 0
3 years ago
Other questions:
  • The sides of a triangle have lengths 3, 3, and 5. what kind of triangle is it ?
    12·1 answer
  • The cost varies directly with the number of tickets purchased. It costs $145 for 10 people to attend a concert.
    14·1 answer
  • Attachment no explanation only answer
    6·2 answers
  • Daisha finished her homework at 5:05 after spending 40 minutes on her homework what time did Daisha start her homework show your
    9·1 answer
  • What is the value of X is this problem? 2x+19
    13·2 answers
  • What is 3 3/4*(-1 1/2)?
    5·2 answers
  • a grocery store paid 298.65 for 15 racks of bread.this can be expressed by the equation y=kx.how much would they have paid for 1
    14·1 answer
  • -3p/4 = 6 <br><br> ANSWER PLS
    9·2 answers
  • The Little League baseball club in town holds open registration. During one weekend they registered 432 baseball players. If 12
    9·2 answers
  • Choose Yes or No to tell whether each rate is a unit rate, 1/ 1/3 , 2/3 / 1 , 2/3 , 3/1​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!