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3 years ago

Find all values of a such that (a-3)/sqrta=-sqrta

Mathematics

1 answer:

Mariana [72]3 years ago

3 0

Answer:

From the Pythagorean theorem...

[ distance between (a, 7) and (2, 1) ]2 = [a - 2]2 + [7 - 1]2

And they tell us that the distance equals 3√5 , so

[ 3√5 ]2 = [a - 2]2 + [7 - 1]2

45 = [a - 2]2 + 36

9 = [a - 2]2

±√9 = a - 2

± 3 = a - 2

± 3 + 2 = a

a = 3 + 2 = 5 or a = -3 + 2 = -1

and

5 + -1 = 4

Step-by-step explanation:

hope dis helps

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Please answer question 4

dangina [55]

They reject if the pie is more than 3.2oz from 28oz.

The scale shows positive number if its more than 28oz.

The scale shows negative number if its less than 28oz.

The scale shows zero if its 28oz.

A . Scale reads -2.8oz which means less than 28oz, So accepted.

B. Scale reads 3.5oz which means 3.5oz more than 28oz. So rejected.

C. Scale reads -3.3oz which means less than 28oz, So accepted.

D. Scale reads 28oz which means more than 28oz, So rejected.

3 0

3 years ago

A football team caught the ball in 60% of the

Paladinen [302]

<em><u>Answer: 25 Plays Total.</u></em>

60% of 25 is 15

10% of 25 = 2.5

2.5x6=15

Hope This Helps.

6 0

3 years ago

Given A(2, 3) B(1, 4) C(1, 3) D(-2, 2). How are AB and CD related?

kondaur [170]

The vector AB is not related with the vector CD as k is not the same for each pair of components.

<h3>Are two vectors similar?</h3>

In this question we must prove if the vector AB is a multiple of the vector CD, that is:

$\overrightarrow{AB} = k \cdot \overrightarrow {CD}$

$\vec B - \vec A = k \cdot [\vec D - \vec C]$

(1, 4) - (2, 3) = k · [(- 2, 2) - (1, 3)]

(- 1, 1) = k · (- 3, - 1)

Hence, the vector AB is not related with the vector CD as k is not the same for each pair of components.

To learn more on vectors: brainly.com/question/13322477

#SPJ1

3 0

2 years ago

The probability that an egg on a production line is cracked is 0.01. Two eggs are selected at random from the production line. F

musickatia [10]

Answer:

$P(X \geq 1)=1-P(X$

$P(X=0)=(2C0)(0.01)^0 (1-0.01)^{2-0}=0.9801$

And replacing we got:

$P(X \geq 1) = 1-0.9801 = 0.0199$

Step-by-step explanation:

Let X the random variable of interest "number of craked eggs", on this case we now that:

$X \sim Binom(n=2, p=0.01)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

And we want to find this probability:

$P(x \geq 1)=1-P(X$

And we can find the probability:

$P(X=0)=(2C0)(0.01)^0 (1-0.01)^{2-0}=0.9801$

And replacing we got:

$P(X \geq 1) = 1-0.9801 = 0.0199$

5 0

3 years ago

A slice is made perpendicular to the base of a right rectangular prism, as shown in the figure.

worty [1.4K]

It is another rectangle

3 0

3 years ago