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
qaws [65]
4 years ago
10

1/7+ 2 4/7 Help help now

Mathematics
1 answer:
PIT_PIT [208]4 years ago
3 0

Answer:

2 5/7

Step-by-step explanation:

You might be interested in
The position of a ball after it is kicked can be determined by using the function f left parenthesis x right parenthesis equals
Citrus2011 [14]

Answer:

When kicked, the height of the ball is 1 feet. The highest point for the ball's trajectory is 12 feet.

Step-by-step explanation:

We are given that the height is given by f(x)=-0.11x^2+2.2x+1. The distance between the ball to the point where it was kicked is 0 right at the moment the ball was kicked. So, the height of the ball, when it was kicked is f(0) = -0.11*0 + 2.2*0 +1  = 1.

To determine the highest point, we will proceed as follows. Given a parabola of the form x^2+bx + c, we can complete the square by adding and substracting the factor b^2/4. So, we get that

x^2+bx+c = x^2+bx+\frac{b^2}{4} - \frac{b^2}{4} +c = (x+\frac{b}{2})^2+c-\frac{b^2}{4}.

In this scenario, the highest/lowest points is c-\frac{b^2}{4}[/tex} (It depends on the coefficient that multiplies x^2. If it is positive, then it is the lowest point, and it is the highest otherwise). Then, we can proceed as follows. [tex] f(x) = -0.11x^2+2.2x+1 = -0.11(x^2-20x)+1

We will complete the square for x^2-20x. In this case b=-20, so

f(x) = -0.11(x^2-20x+\frac{400}{4}-\frac{400}{4})+1 = -0.11(x^2-20x+100-100)+1

We can distribute -0.11 to the number -100, so we can take it out of the parenthesis, then

f(x) = -0.11(x^2-20x+100)+1+100*0.11 = -0.11(x^2-20x+100)+1+11 = -0.11(x-10)^2+12

So, the highest point in the ball's trajectory is 12 feet.

5 0
4 years ago
Read 2 more answers
Find the volume of the prism.<br> 6 m<br> 20 m<br> 26 m<br> The volume of the prism is<br> m?
Masja [62]

Step-by-step explanation:

To find the volume, you need to do length x width x height.

In this case, we are going to do 6 x 20 x 26.

You get 3,120 m^3.

Hope you found this helpful!

3 0
3 years ago
Suppose x has a distribution with μ = 10 and σ = 9. (a) If a random sample of size n = 43 is drawn, find μx, σ x and P(10 ≤ x ≤
JulsSmile [24]

Answer:

P(10 ≤ x ≤ 12) = 0.4274

Step-by-step explanation:

Population mean = u = 10

Population Standard Deviation = \sigma = 9

Sample size = n = 43

Sample mean(\mu_{x}) is equal to the population mean. So,

Sample mean = \mu_{x} = 10

Sample standard deviation(\sigma_{x}) is equal to population standard deviation divided by square root of sample size. So,

Sample standard deviation = \sigma_{x} = \frac{9}{\sqrt{43}}=1.372

We have to find the probability that for a random sample of n = 43, the value lies between 10 and 12 i.e. P(10 ≤ x ≤ 12)

P(10 ≤ x ≤ 12) = P(x ≤ 12) - P( x ≤ 10)

We can find P(x ≤ 12 ) and P(x ≤ 10) by converting these values to z scores.

The formula for z score is:

z=\frac{x-\mu_{x}}{\sigma_{x}}

For x =12, we get:

z=\frac{12-10}{1.3725}=1.457

For x =10, we get:

z=\frac{10-10}{1.3725}=0

So,

P(x ≤ 12) - P( x ≤ 10) = P(z ≤ 1.457) - P(z ≤ 0)

From the z table,

P(z ≤ 1.457) = 0.9274

P(z ≤ 0) = 0.5

So,

P(x ≤ 12) - P( x ≤ 10) = P(z ≤ 1.458) - P(z ≤ 0) = 0.9274 - 0.5 = 0.4274

So,

P(10 ≤ x ≤ 12) = P(x ≤ 12) - P( x ≤ 10) = 0.4274

Therefore,

The probability that for a random sample of size 43, the mean lies between 10 and 12 is 0.4274.

8 0
3 years ago
Find the area of the shaded square, PQRS.​
Tanya [424]

Answer:

22

Step-by-step explanation:

3 0
3 years ago
I NEED HELP WITH THIS ONE TOO!
oee [108]

4 × ( 4 + 9 ) = 2 × ( 2 + x )

4 × 13 = 2 × ( 2 + x )

2 × 2 × 13 = 2 × ( 2 + x )

2 × 26 = 2 × ( 2 + x )

Divide both sides by 2

2 × 26 ÷ 2 = 2 × ( 2 + x ) ÷ 2

26 = 2 + x

Subtract both sides 2

26 - 2 = 2 - 2 + x

x = 24

6 0
3 years ago
Other questions:
  • HELP FAST I WILL MARK YOU AS THE BRAINLIEST
    11·1 answer
  • List the like terms of the expression 3n+5p+2+n
    7·1 answer
  • The room and the hallway shown in the floor plan below have different dimension but the same area. Find value of w.
    11·1 answer
  • frederick is designing a poster that has 3-in borders on the top and bottom and 2-in borders on the left and right sides. they a
    12·1 answer
  • Pls pls help! 50pts!
    7·2 answers
  • How long is the drawing of that piece?
    12·1 answer
  • A linear function is a function in which the dependent variable changes at a constant rate relative to the independent variable.
    9·2 answers
  • Question 1<br> A<br> b<br> c<br> d <br> PLEASE HELP ASAP!!
    5·1 answer
  • What is 20% of 240 check your mah plz help give brainy is
    5·2 answers
  • I need help with this one some one help pls
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!