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MakcuM [25]
3 years ago
9

Doug drives without backtracking from his apartment to a campsite in another state. After two hours, he is halfway to his destin

ation. After four hours, he is two thirds of the way there. Which of the following could represent the fraction of his travel distance he has covered after three hours?
a) 2/5
b) 3/5
c) 3/4
d) 4/5
Mathematics
1 answer:
ki77a [65]3 years ago
6 0
For this item, after two hours, he is able to cover 0.5 of the distance and after four hours, he is able to 0.67 of the distance. The fraction of the distance he is able to cover after 3 hours should be greater than 0.5 but lesser than 0.67. Thus, the answer to this item is letter B which is equal to 0.6. 
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How is isometric transformation different from similarity transformation
cricket20 [7]

Answer:

A similarity transformation is a transformation in which the image has the same shape as the pre-image. Specifically, the similarity transformations are the isometric transformations (reflection, rotation, translation) and dilation as well. ... All similarity transformations are transformations.

Step-by-step explanation:

7 0
4 years ago
Clayton says that 2 1/2 + 3 3/5 will be more than 5 but less than 6 since 2 + 3 is 5. Is Clayton’s reasoning correct? Prove him
antoniya [11.8K]
He is wrong...

2 1/2 + 3 3/5 = 97/20

Simplified, I believe the answer is 4 17/20
7 0
4 years ago
Entify a pair of segments that are marked perpendicular to each other on
galina1969 [7]

Based on the image, FJH is perpendicular to JI as these two lines form a right angle.

<h3>What is a perpendicular line?</h3>

This name is given to a line that creates a right angle when it intersects or meets with another line.

This concept opposes the concept of parallel line, which is used to describe lines that never intersect and are always the same distance apart.

<h3>How do you identify a perpendicular line?</h3>
  1. Look for a right angle or a a 90° angles.
  2. Identify the lines that intersect to create this angle.
  3. Write down the two lines or line sections.

Based on the above, in the image given two lines that can be classified as perpendicular are the lines FJH (horizontal lines) and JI (vertical line) as their intersection creates a right angle.

Learn more about coordinate planes in: brainly.com/question/14462788

#SPJ1

6 0
2 years ago
(a) A parachutist lands at a point on the line between the points A and B, and the target is an operation at A. The operation fa
mr Goodwill [35]

Answer:

a) \frac{B-\frac{A+5B}{6}}{B-A}= \frac{6B -A-5B}{6(B-A)}=\frac{B-A}{6(B-A)}=\frac{1}{6}

b) P(X>1) = 1-P(X\leq 1)=1-\int_{0}^1 \frac{1^{2} x^{2-1} e^{- x}}{\gamma(2)}=0.736

Step-by-step explanation:

Part a

We assume that the parachutist lands at random point in the interval (x=A,y=B) we have a continuous random variable X. And the distribution of X would be uniform Y\sim Unif(A,B). And the density function would be given by:

f(x) =\frac{1}{B-A} , A

And 0 for other case.

The operation fails, if parachutist's distance to A is more than five times as much as her distance to B.

So the point P in the interval (A,B) at which the distance to A is exactly 5 times the distance to B is given by:

P= A + \frac{5}{6} (B-A)= \frac{6A +5B -5A}{6}=\frac{A+5B}{6}

And we can find the probability desired like this:

P(d(P,A) \geq 5 d(P,B))= P(\frac{A+5B}{6} < X< B)

And from the cumulative distribution function of X ficen by F(X)\frac{X-A}{B-A} we got:

\frac{B-\frac{A+5B}{6}}{B-A}= \frac{6B -A-5B}{6(B-A)}=\frac{B-A}{6(B-A)}=\frac{1}{6}

Part b

For this case we assume that X\sim Gamma (2,1)

On this case we assume that \alpha=2, \beta= 1

The density function for the Gamma distribution is given by:

P(X)= \frac{\beta^{\alpha} x^{\alpha-1} e^{-\beta x}}{\gamma(\alpha)}

And on this case we can find the probability using the complement rule like this:

P(X>1) = 1-P(X\leq 1)=0.736

We can solve this problem with the following excel code:

"=1-GAMMA.DIST(1;2;1;TRUE)"

And if we do it by hand we need to do this:

P(X>1) = 1-P(X\leq 1)=1-\int_{0}^1 \frac{1^{2} x^{2-1} e^{- x}}{\gamma(2)}=0.736

6 0
3 years ago
Alicia went to the local farmers market to buy some fresh produce she bought carrots for 35% of the original price of 7.14 how m
Feliz [49]

Answer:

$2.499

Step-by-step explanation:

7.14 × .35 = 2.499

3 0
3 years ago
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