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
NikAS [45]
3 years ago
14

Given that X base 7 - 2043 base 7 = 4455 base 7. What is X?

Mathematics
1 answer:
Dovator [93]3 years ago
6 0

<em>x</em> ₇ - 2043₇ = 4455₇

<em>x</em> ₇ = 2043₇ + 4455₇

In the 7⁰-digits place,

5 + 3 = 8 = 7 + 1 = 11₇

Carry the 1. Then in the 7¹-digits place,

4 + 5 + 1 = 10 = 13₇

Carry the 1. In the 7²-digits place,

0 + 4 + 1 = 5₇

No carrying needed here. Finally,

2 + 4 = 6₇

So we have

<em>x</em> ₇ = 6531₇

You might be interested in
F(x)=x^2. What is g(x)
Arisa [49]

Answer:

D

Step-by-step explanation:

7 0
3 years ago
The hypotenuse of a 45°-45°-90° triangle measures 8 inches. What is the length of each leg?
LenaWriter [7]

Answer:

4.24, the hypotenuse is each leg multiplied by root 2, so you divide 6 by the root of 2

Step-by-step explanation:

4 0
3 years ago
(4.1.4) Let X and Y be Bernoulli random variables. Let Z = X + Y. a. Show that if X and Y cannot both be equal to 1, then Z is a
Fynjy0 [20]

Step-by-step explanation:

Given that,

a)

X ~ Bernoulli (p_x) and Y ~ Bernoulli (y_x)

X + Y = Z

The possible value for Z are Z = 0 when X = 0 and Y = 0

and Z = 1 when X = 0 and Y = 1 or when X = 1 and Y = 0

If X and Y can not be both equal to 1 , then the probability mass function of the random variable Z takes on the value of 0 for any value of Z other than 0 and 1,

Therefore Z is a Bernoulli random variable

b)

If X and Y can not be both equal to  1

then,

p_z = P(X=1 or Y=1)\\

p_z = P(X=1)+P(Y=1)-P(=1 and Y =1)

p_z = P(x=1)+P(Y=1)\\\\p_z=p_x+p_y

c)

If both X = 1 and Y = 1 then Z = 2

The possible values of the random variable Z are 0, 1 and 2.

since a  Bernoulli variable should be take on only values 0 and 1 the random variable Z does not have Bernoulli distribution

7 0
3 years ago
Suppose a certain drug test is 85% accurate, meaning that if a person is a user, the result is positive 85% of the time, and if
kakasveta [241]

Answer:

29.411 %  of the result is true.

Step-by-step explanation:

This test's sensitivity is low.

Suppose we have 5 drug users and 85% of the test is accurate meaning that 5* 0.85= 4.25 people are drug users which is true.

But if work for the non users than 5% people being drug users means 95 people are non drug users out of the hundred.

And 85 % accuracy would give  95* 0.85= 80.75 which is very high.

And out of the 80.75 * 15%= 12.11 only 12 are positive .

The results give us  5 out of 17  true possibilities

or 5/17 *100= 29.411 %  of the result is true.

8 0
3 years ago
Which of the following sets of ordered pairs does NOT show a function? A (1,3); (1,4): (1,5) : (1,6) B (2,6); (3,9); (4,12); (5,
polet [3.4K]

Answer:

Electricity is the flow of electrical power or charge. It is a secondary energy source which means that we get it from the conversion of other sources of energy, like coal, natural gas, oil, nuclear power and other natural sources, which are called primary

8 0
3 years ago
Other questions:
  • What is the largest factor of 16 that is also a perfect cube?
    14·1 answer
  • Please help me don’t skip!
    11·1 answer
  • Houston Elementary School is selecting students to be in the winter festival show. There are 4 roles left but there are 12 stude
    9·2 answers
  • Please help! Evaluate 1 + ( - 2/3 ) - (-m) where m - 9/2.
    11·2 answers
  • What is this in vertex form
    6·1 answer
  • Cuanto es: 9º 45´´ + 7º 59´ 58´´<br> DIOS BENDIGA AL QUE ME DIGA LA RESPUESTA
    5·1 answer
  • Write each as a decimal. Round to the thousandths place.<br> 9) 78.4%<br> 10) 29%<br> Help
    8·1 answer
  • The balance in your bank account is $720.50. You use your debit card for purchases of $45, $82, and $22.25. Then, you deposit $9
    9·1 answer
  • Working as a team, 8 mathletes can solve 20 problems in 10 minutes. At this same rate, how many mathletes are needed in order to
    12·1 answer
  • PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!