4 years ago

What’s the formula for exponential growth and decay function?

1 answer:

n200080 [17]4 years ago

7 0

The original exponential formula is Y=ab^x, the b value has been replaced by either 1+r) or by (1-r). The growth rate is determined as b=1+r

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Raphael graphed the system of equations shown. y = – 3 y = x – 0.8 What is the best approximation for the solution to this syste

Ber [7]

Given ---›

y = -3

&

y = x - 0.8

So,
=> x = y + 0.8

=> x = -3 + 0.8

=> x = -2.2

Therefore, the best approximation for the solution to this system of equations is = (–2.2, –3)

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4 years ago

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Please help :/ math is my worst subject and i cant get it for the life of me lol

marin [14]

The answer is (-2, -1.5, 0, 2/5, 3/4)

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3 years ago

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If triangle DEF has a 90° angle at vertex E, which statements are true? Check all that apply.

algol [13]

The angle at vertex D is acute.
Triangle DEF is a right traingle.

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3 years ago

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Construct the triangle ABC using as coordinates of its vertices points A(−3, 0), B(4, 5), C(0, −4). Find the coordinates of inte

Mnenie [13.5K]

Plot all points on the coordinate plane and combine these points by lines to get triangle ABC (see attached picture for details).

Write the equation of side AB:

$\dfrac{x-(-3)}{4-(-3)}=\dfrac{y-0}{5-0} ,\\ \\\dfrac{x+3}{7}=\dfrac{y}{5},\\ \\y=\dfrac{5}{7}x+\dfrac{15}{7}.$

To find y-intercept you have to substitute x=0, then:

$y=\dfrac{5}{7}\cdot 0+\dfrac{15}{7}=\dfrac{15}{7}=2\dfrac{1}{7}.$

The point $\left(0,2\dfrac{1}{7} \right)$ is the point where line AB intersects y-axis.

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3 years ago

A psychology class consists of 14 males and 36 females. if the professor selects names from the class list using random sampling

Sonbull [250]

The probability of selecting a female student for the first picking is $\frac{36}{50} = \frac{18}{25}$
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The probability that the third pick is a male is $\frac{14}{48}= \frac{7}{24}$

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3 years ago