All categories

3 years ago

A. Find and explain the error in the work shown.

Mathematics

1 answer:

Marizza181 [45]3 years ago

5 0

The error is that they had placed the numbers in the wrong placeholder. Remember that the Distance formula is $D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$ .

Correct Work:

$D=\sqrt{(5-(-1))^2+(16-15)^2}\\D=\sqrt{6^2+1^2}\\D=\sqrt{36+1}\\D=\sqrt{37}\ \approx 6.08$

You might be interested in

What time is it.But not the time right now the time in your heart.

bonufazy [111]

Answer:

dead UnU

explanation:

who knows O_o

7 0

3 years ago

There are 7 acts in a talent show.

lara31 [8.8K]

Answer:

Event A: 1/35

Event B: 1/840

Explanation:

Event A

For the event A, the order of the first 4 acts does not matter.

The number of different four acts taken from a set of seven acts, when the order does not matter, is calculated using the concept of combinations.

Thus, the number of ways that the first four acts can be scheduled is:

$C(m,n)=\dfrac{m!}{n!(m-n)!}$

$C(7,4)=\dfrac{7!}{4!(7-4)!}=\dfrac{7!}{4!(3)!}=35$

And the number of ways that four acts is the singer, the juggler, the guitarist, and the violinist, in any order, is 1: C(4,4).

Therefore the probability of Event A is:

$P(A)=1/35$

Event B

Now the order matters. The difference between combinations and permutations is ordering. When the order matters you need to use permutations.

The number of ways in which four acts can be scheculed when the order matters is:

$P(m,n)=\dfrac{m!}{(m-n)!}$

$P(m,n)=\dfrac{7!}{(7-4)!}=P(m,n)=\dfrac{7!}{4!}=840$

The number of ways the comedian is first, the guitarist is second, the dancer is third, and the juggler is fourth is 1: P(4,4)

Therefore, the probability of Event B is:

$P(B)=1/840$

7 0

3 years ago

How many triangles can be constructed with angles measuring 120°, 40°, and 10°?

balu736 [363]

Any kind of Triangle must have 180 degree of angle in total if it is not, then it is not a Triangle.

In short, Your Answer would be Zero

Hope this helps!

6 0

3 years ago

Read 2 more answers

What is the equation, in slope intercept form, with two points of (-9,-8) and (2,-4)?

aleksandr82 [10.1K]

I think It would be -4-(-8)/2-(-9)=-4+8/2+9=4/11 is the equation by using y2-y1/x2-X1

Sorry If I'm wrong.

7 0

3 years ago

Solve: x³-7x²+36=0.

Aliun [14]

Answer:

3,6,-2

Step-by-step explanation:

a+2a+b = 7

2a^2b = -36

a*2a + ab + 2ab = 0

or, a(2a+3b) = 0

so, b = -2a/3

Solve those and you find 3,6,-2

3 0

3 years ago