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2 years ago

{1.17-0.07a+(-3.92a)}1.17−0.07a+(−3.92a)

Mathematics

2 answers:

gogolik [260]2 years ago

7 0

Answer

:=5

Step-by-step explanation:

nexus9112 [7]2 years ago

4 0

Answer:

-3.99a+1.17

Step-by-step explanation:

khan

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Help please!!!!! THIS IS URGENT

FromTheMoon [43]

Answer:

There will be $22,800 left after 6 years

Step-by-step explanation:

4% every year after 6 years = 24% be taken out of 30,000

24% of 30,000 = 7200 so you'll have 22,800 left.

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2 years ago

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2/3=1.2/x solve for x

Anvisha [2.4K]

First isolate x by multiplying by x on both sides. It will look like this:

(2/3)x=1.2

Then devise by (2/3) on both sides to get:

x= 1.2/(2/3)

The easiest way to get this is plug that into a calculator and get the answer:

x=1.8

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2 years ago

Write the numbers 3 2 and 8 in an addition swntence

Korvikt [17]

Ella has 3 apples. brad has 2 apples. sarah has 8 apples. how many apples do they have altogether?

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3 years ago

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Factories A and B produce computers. Factory A produces 3 times as many computers as factory B. The probability that an item pro

OleMash [197]

Answer:

P(A∣D) = 0.667

Step-by-step explanation:

We are given;

P(A) = 3P(B)

P(D|A) = 0.03

P(D|B) = 0.045

Now, we want to find P(A∣D) which is the posterior probability that a computer comes from factory A when given that it is defective.

Using Bayes' Rule and Law of Total Probability, we will get;

P(A∣D) = [P(A) * P(D|A)]/[(P(A) * P(D|A)) + (P(B) * P(D|B))]

Plugging in the relevant values, we have;

P(A∣D) = [3P(B) * 0.03]/[(3P(B) * 0.03) + (P(B) * 0.045)]

P(A∣D) = [P(B)/P(B)] [0.09]/[0.09 + 0.045]

P(B) will cancel out to give;

P(A∣D) = 0.09/0.135

P(A∣D) = 0.667

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3 years ago

A parabola has a focus of F(2, -0.5) and a directrix of y=-1.5 P(x,y) represents any point on the parabola, while D(x, -1.5) rep

prohojiy [21]

The sketch of the parabola is attached below

We have the focus $(a,b) = (2, -0.5)$
The point $P(x,y)$
The directrix, c at $y=-1.5$

The steps to find the equation of the parabola are as follows

Step 1
Find the distance between the focus and the point P using Pythagoras. We have two coordinates; $(2, -0.5)$ and $(x,y)$ .
We need the vertical and horizontal distances to find the hypotenuse (the diagram is shown in the second diagram).
The distance between the focus and point P is given by
$\sqrt{ (x-a)^{2}+ (y-b)^{2} }$

Step 2
Find the distance between the point P to the directrix $c$ . It is a vertical distance between y and c, expressed as $y-c$

Step 3
The equation of parabola is then given as
$\sqrt{ (x-a)^{2}+ (y-b)^{2} }$ = $y-c$
$(x-a)^{2}+ (y-b)^{2}= (y-c)^{2}$ ⇒ substituting a, b and c
$(x-2)^{2}+ (y--0.5)^{2} = (y--1.5)^{2}$
$(x-2)^{2}+ (y+0.5)^{2}= (y+1.5)^{2}$ ⇒Rearranging and making $y$ the subject gives

$y= \frac{ x^{2} }{2} -2x+1$

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3 years ago