3 years ago

4 x 1 + 1 x 1/100 + 9 x 1/1000 in standard form

Mathematics

1 answer:

uysha [10]3 years ago

5 0

Answer:

4.1

Step-by-step explanation:

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If f(x) is an exponential function where f(-2,5) = 9 and f(7) = 91, then find the value of f(12), to the nearest hundredth.

insens350 [35]

Answer:

$f(12) = 323.02$

Step-by-step explanation:

Given

$f(-2.5) = 9$

$f(7) = 91$

$f(12) = 16.7 * 1.28^{12$

Required

$f(12)$

An exponential function is:

$f(x) = ab^x$

$f(-2.5) = 9$ implies that:

$9 = ab^{-2.5}$

$f(7) = 91$ implies that:

$91 = ab^7$

Divide both equations

$91/9 = ab^7/ab^{-2.5}$

$91/9 = b^7/b^{-2.5}$

Apply law of indices

$91/9 = b^{7+2.5}$

$10.11 = b^{9.5}$

Take 9,5th root of both sides

$b = 1.28$

So, we have:

$9 = ab^{-2.5}$

$9 = a * 1.28^{-2.5}$

$9 = a * 0.54$

$a = 9/0.54$

$a = 16.7$

f(12) is calculated as:

$f(x) = ab^x$

$f(12) = 16.7 * 1.28^{12$

$f(12) = 323.02$

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3 years ago

Shade 1 3rd of this strip

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Two rectangles should be shaded

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Aimees karate class lasts 1hr and 15min and is over at 5:00pm what time does aimees karate class start

natali 33 [55]

3:45 pm, 1 hour before 5 is 4, and adding 15 minuets makes 3 : 45

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Using the number line above, select the number that would be the opposite of Point T.

erik [133]

Answer:

-8

Step-by-step explanation:

i feel its correct

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3 years ago

ZA and ZB are supplementary angles. If mZA = (2x + 26)° and m

bixtya [17]

2x+26+x+25=180
3x+51=180
3x=129
X=43
43+25
Answer
mZB=68

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3 years ago