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
pentagon [3]
1 year ago
8

Linda tossed a fair coin 6 times, and the result was heads each time. Which statement

Mathematics
1 answer:
Ivanshal [37]1 year ago
6 0

Answer:

D.

Step-by-step explanation:

Each toss is independent so the probability of getting a tail is the same thE OF GETTING A HEAD - 50%^.

You might be interested in
3. (5 + 2) = (3 . 5) + (3 . 2) *
UNO [17]

Answer:

C) Distributive Property

Step-by-step explanation:

You're <em>distributing</em> in the 3 when you multiply it by the 5 and the 2 in the algebraic process:

 ➦  ➦

3•(5 + 2) = (3 • 5) + (3 • 2)

So, the 3 was <em>distributed</em> between the 5 and 2 when you multiplied.

Hence, this is the distributive property.

8 0
3 years ago
2) Solve the system of equations:<br><br> y=6x<br><br> 4x+y=7
LenKa [72]

Answer: x= 7/10

Y= 21/5

Step-by-step explanation:

4 0
2 years ago
Refer previous problem. Suppose that you wish to estimate the difference between the mean acidity for rainfalls at two different
aivan3 [116]

Answer:

Hence,we need at least 136 rainfall PH values in the sample i.e

n ≥ 136

Step-by-step explanation:

We are given that:

(σ1)^2 = (σ2)^2 = Population variance = 0.25

So, E < 0.1

Confidence coefficient (c) = 0.9

n = n1 = n2

For confidence level, 1 - α = 0.9,we'll determine Z (α /2) = Z 0.05 by looking up 0.005 using the normal probability table which i have attached.

So, Z (α /2) = 1.645

The margin of error E is given as;

E = Z (α /2)√[(σ1)^2)/n1] + [(σ2)^2)/n2]

= Z (α /2)√({(σ1)^2 + (σ2)^2}/n) < 0.1

Multiply both sides by √n to get;

Z (α /2)√(σ1)^2 + (σ2)^2} < 0.1√n

Divide both sides by 0.1;

{Z (α /2)√(σ1)^2 + (σ2)^2}}/0.1 <√n

When we square each side, we get

{Z (α /2)√(σ1)^2 + (σ2)^2}}/0.1} ^2 < n

We'll now fill in the known values and solve;

n > ( 1.645 x √{(0.25 + 0.25)/0.1}^2

n > 135.3 or approximately n > 136

Hence,we need at least 136 observations in the sample i.e

n ≥ 136

7 0
3 years ago
7.1 is 10 times smaller than
Aleks [24]
7.1 is ten times smaller than 71
8 0
3 years ago
Read 2 more answers
Differential cos^2x dy/dx =e^y-tanx​
gulaghasi [49]

Answer:

y=t−1+ce

−t

where t=tanx.

Given, cos

2

x

dx

dy

+y=tanx

⇒

dx

dy

+ysec

2

x=tanxsec

2

x ....(1)

Here P=sec

2

x⇒∫PdP=∫sec

2

xdx=tanx

∴I.F.=e

tanx

Multiplying (1) by I.F. we get

e

tanx

dx

dy

+e

tanx

ysec

2

x=e

tanx

tanxsec

2

x

Integrating both sides, we get

ye

tanx

=∫e

tanx

.tanxsec

2

xdx

Put tanx=t⇒sec

2

xdx=dt

∴ye

t

=∫te

t

dt=e

t

(t−1)+c

⇒y=t−1+ce

−t

where t=tanx

8 0
2 years ago
Other questions:
  • According to Egyptian artifacts, how early was the concept of the square root known?
    15·2 answers
  • In △ABC,∠B is a right angle. The coordinates for each point are A(10, 7), B(5, 9), and C(3, 4). ​ Rounded to the nearest tenth,
    14·1 answer
  • A rectangular auditorium seats 1702 people. The number of seats in each row exceeds the number of rows by 9. Find the number of
    12·1 answer
  • How do u find the perimeter and the area of a triangle with the hypotenuse of 25 cm and leg 20 cm
    7·1 answer
  • Use the expansion of (4x+3)^3 to find the exact value of (4.02)^3
    11·1 answer
  • (01.03)
    9·1 answer
  • Solve each equation using the substitution method.<br><br> 8+=56
    9·1 answer
  • Help please. Geometry.
    5·2 answers
  • Corey has a garden in the shape of a square. The garden covers 64 square feet. What are the possible dimensions?
    9·1 answer
  • Solve -5&lt;4x+3&lt;_&lt;7<br><br> Not really sure how to solve, line under greater than sign
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!