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3 years ago

13

Will mark as braniliest!

1 answer:

In-s [12.5K]3 years ago

8 0

Zara should have added rather than subtracting, adding would have balanced the equation

If you subtract, like Zara, then you woulg have 39-12=-24, not what you want

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When x = 12,y = 8 find x when y = 12

nikklg [1K]

$x=12\ \ and\ \ y=8\\\
x=?\ \ \ and\ \ y=12\\\\ Making\ ratio:\\\\
12-8\\x-12\\\\
Cross\ multiplication:\\\\
12*12=8x\\\\
144=8x\ \ \ | divide\ by\ 8\\\\x=18\\\\For\ y=12\ x=18.$

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3 years ago

Can you please help me with this question :)

timurjin [86]

Answer:

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Step-by-step explanation:

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4 years ago

What is the answer to 1014.16667 rounded to the nearest tenths

yan [13]

Answer: 1014.2

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6 0

3 years ago

100 points ! and I will mark me Brainliest

Romashka [77]

Answer:

it ARBY'S

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Celia thinks that because the drop between the first two points is so large, the best model might actually have a y- intercept a

victus00 [196]

The equation of Celia's exponential model is $y = 9.4 * 0.75^x$

<h3>How to estimate the model?</h3>

The table that completes the question is added as an attachment

The y-intercept is given as:

(0,9.4)

The ratios of successive data values are calculated as:

$r_1 = \frac{6.0}{10}= 0.6$

$r_2 = \frac{5.4}{6.0}= 0.9$

$r_3 = \frac{3.9}{5.4}= 0.72$

$r_4 = \frac{3.7}{3.9}= 0.95$

$r_5 = \frac{2.3}{3.7}= 0.62$

$r_6 = \frac{1.4}{2.3}= 0.61$

$r_7 = \frac{1.0}{1.4}= 0.71$

$r_8 = \frac{0.9}{1.0}= 0.9$

$r_9 = \frac{0.8}{0.9}= 0.89$

$r_{10} = \frac{0.5}{0.8}= 0.63$

The average of the above values is

$b = \frac{0.6 + 0.9 + 0.72 + 0.95 + 0.62 + 0.61 + 0.71 + 0.9 + 0.89 + 0.63}{10}$

Evaluate

b = 0.75

An exponential function is represented as:

$y = ab^x$

Where

a = 9.4 as in the y-intercept (0,9.4)

b = 0.75

Substitute these values in $y = ab^x$

$y = 9.4 * 0.75^x$

Hence, the Celia's exponential model is $y = 9.4 * 0.75^x$

Read more about exponential function at:

brainly.com/question/11464095

#SPJ1

7 0

2 years ago