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
daser333 [38]
3 years ago
11

Write a doubles plus one fact for the sum of 7

Mathematics
2 answers:
gladu [14]3 years ago
8 0
3 + 3 + 1 = 7 

3 + 3 are the double ones

+1

=7
asambeis [7]3 years ago
5 0
3+3+1=7
double plus one fact is 7
You might be interested in
A machine fills containers with a particular product. Assume the filling weights are normally distributed with a variance of 0.1
Ghella [55]

Answer:

z=-0.674

And if we solve for \mu we got

\mu=12 +0.674*0.4=12.270

So then the mean is 'mu = 12.270 for this case.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:

X \sim N(\mu,\sqrt{0.16}= 0.4)  

For this part we want to find a value a, such that we satisfy this condition:

P(X>12)=0.85   (a)

P(X   (b)

Both conditions are equivalent on this case. We can use the z score again in order to find the value a.  

As we can see on the figure attached the z value that satisfy the condition with 0.25 of the area on the left and 0.85 of the area on the right it's z=-0.674. On this case P(Z<-0.674)=0.25 and P(z>-0.674)=0.85

If we use condition (b) from previous we have this:

P(X  

P(z

But we know which value of z satisfy the previous equation so then we can do this:

z=-0.674

And if we solve for \mu we got

\mu=12 +0.674*0.4=12.270

So then the mean is 'mu = 12.270 for this case.

8 0
3 years ago
M=
alex41 [277]
50. Slope- -1
Y intercept- (0,7)

51. Slope- -1/3
Y intercept- (0,-3)
5 0
2 years ago
Michael is 4 years younger than twice his cousin, Damien’s age. The sum of their ages is 46. How old is Damien?
Verizon [17]
Let x = The age of Michael
Let 2x-3 = The age of Michaels cousin
X+2x-3=46
x=16+1/3
X = 49 years

I think that’s the answer I’m not 100% sure though
4 0
3 years ago
Statements that are true for a cylinder with radius r and height h.
vampirchik [111]

Answer:

Only the second and third statements are correct:

Doubling <em>r</em> quadruples the volume.

Doubling <em>h</em> doubles the volume.

Step-by-step explanation:

The volume of a cylinder is given by:

\displaystyle V=\pi r^2h

We can go through each statement and examine its validity.

Statement 1)

If the radius is doubled, our new radius is now 2<em>r</em>. Hence, our volume is:

\displaystyle V=\pi (2r)^2h=4\pi r^2h

So, compared to the old volume, the new volume is quadrupled the original volume.

Statement 1 is not correct.

Statement 2)

Using the previous reasonsing, Statement 2 is correct.

Statement 3)

If the height is doubled, our new height is now 2<em>h</em>. Hence, our volume is:

V=\pi r^2(2h)=2\pi r^2h

So, compared to the old volume, the new volume has been doubled.

Statement 3 is correct.

Statement 4)

Statement 4 is not correct using the previous reasonsing.

Statement 5)

Doubling the radius results in 2<em>r</em> and doubling the height results in 2<em>h</em>. Hence, the new volume is:

V=\pi (2r)^2(2h)=\pi (4r^2)(2h)=8\pi r^2h

So, compared to the old volume, the new volume is increased by eight-fold.

Statement 5 is not correct.

7 0
3 years ago
What are the coordinates of the midpoint of the line segment with endpoints J(−6, 3) and K(4, −2) ?
frutty [35]
M = ( (-6+4)/2, (3+-2)/2 )

M = (-1, 1/2)
8 0
2 years ago
Read 2 more answers
Other questions:
  • Work out:<br> 2/7 + 3/7 =?<br> 5/8 + 7/8 =?<br> 2/3 - 1/2 =?
    8·2 answers
  • The product of 7 and a number,
    7·1 answer
  • Which pairs of quadrilaterals can be shown to be congruent using rigid motions?
    15·1 answer
  • 8 x 10^3 is how many times as large as 4 x 10^2?
    8·2 answers
  • Jully bought 3 slices of cheese pizza and 4 slices of pepperoni pizza for $18.00. Christian bought 3 slices of cheese pizza and
    14·1 answer
  • Can someone help me with question 1 and 2 please​
    10·1 answer
  • Each drawer in Monique's nightstand has a volume of 6 decimeters. 8 drawer in her dresser is twice as long, twice as wide, and t
    7·1 answer
  • PLEASE HELP ILL GIVE BRAINLIEST AND POINTS PLEASEE
    10·1 answer
  • Halp plass halp me plas
    13·2 answers
  • Find the surface area of this composite solid.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!