3 years ago

Isabella is 10% taller today than she was one year ago. Her current height is 176cm. How tall was she one year ago?

Mathematics

1 answer:

natima [27]3 years ago

6 0

The short answer is 158.4

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<img src="https://tex.z-dn.net/?f=%20%5Chuge%5Cfbox%5Cgreen%7BQUESTION%7D%20" id="TexFormula1" title=" \huge\fbox\green{QUESTION

Anni [7]

$\huge \fbox \orange{♧Answer♧}$

$\mathcal\blue{METHOD\:1}$

$\mathsf \purple{ - ( \frac{y}{x} )}$

$\mathsf \purple{ - ( \frac{ - 4}{5})}$

$\mathsf \purple{( \frac{4}{5} )}$

$\mathcal\blue{METHOD\:2}$

$\mathsf\purple{m\:=\:(Y2\:-\:Y1)\:÷\:(X2\:-X1)}$

$\mathsf\purple{m\:=\:(-4\:-0)\:÷\:(0\:-\:5)}$

$\mathsf\purple{( \frac{4}{5})}$

$\mathcal\blue{METHOD\:3}$

$\mathsf\purple{m\:=\:rise\:÷\:run}$

$\mathsf\purple{m\:=\:( \frac{4}{5})}$

$\mathbb\pink{NOTE:}$

The difference between the y-coordinates of the two points is called the rise.
The difference between the x-coordinates of the same two points is called the run.
The slope can be calculated by dividing the rise by run.

3 0

2 years ago

The speed of an elevator varies inversely with the weight it carries. If the elevator rises at 10 feet per second when it carrie

777dan777 [17]

Answer:

$8\frac{ft}{sec}$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form $y*x=k$ or $y=k/x$

Let

x-----> the speed of the elevator

y----> the weight it carries

$y*x=k$

<em>Find the constant k</em>

For x=10 ft/sec, y=400 lb

substitute

$k=10*400=4,000$

The equation is

$y*x=4,000$

Find the speed for y=500 lb

substitute in the equation

$500*x=4,000$

$x=4,000/500=8\frac{ft}{sec}$

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3 years ago

1. Which of the following linear equations has a negative slope? Circle all that apply. A. y = 2x – 5 B. y = 4– 7x C. y=-3 D. X

Ilya [14]

Answer:

C) y= -3, D) x= -1, E y= -5/4x +2

Step-by-step explanation:

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2 years ago

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Step-by-step explanation:

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What type of function does the following represent and what is the correct equation?

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B. Exponential growth, y=(3)(1.5)^x

Step-by-step explanation:

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